Merge "Add DistributionManagement to checkstyle pom"
diff --git a/cps-rest/src/main/java/org/onap/cps/rest/controller/CpsRestController.java b/cps-rest/src/main/java/org/onap/cps/rest/controller/CpsRestController.java
index 549760d..0821dca 100755
--- a/cps-rest/src/main/java/org/onap/cps/rest/controller/CpsRestController.java
+++ b/cps-rest/src/main/java/org/onap/cps/rest/controller/CpsRestController.java
@@ -29,11 +29,12 @@
 import javax.validation.Valid;
 import org.modelmapper.ModelMapper;
 import org.onap.cps.api.CpService;
-import org.onap.cps.api.model.AnchorDetails;
+import org.onap.cps.api.CpsAdminService;
+import org.onap.cps.api.CpsModuleService;
 import org.onap.cps.exceptions.CpsException;
 import org.onap.cps.exceptions.CpsValidationException;
 import org.onap.cps.rest.api.CpsRestApi;
-import org.onap.cps.rest.model.Anchor;
+import org.onap.cps.spi.model.Anchor;
 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
@@ -53,28 +54,35 @@
     private CpService cpService;
 
     @Autowired
+    private CpsModuleService cpsModuleService;
+
+    @Autowired
+    private CpsAdminService cpsAdminService;
+
+    @Autowired
     private ModelMapper modelMapper;
 
     /**
      * Create a new anchor.
      *
-     * @param anchor the anchor details object.
+     * @param anchor        the anchor details object.
      * @param dataspaceName the dataspace name.
      * @return a ResponseEntity with the anchor name.
      */
     @Override
-    public final ResponseEntity<String> createAnchor(@Valid final Anchor anchor, final String dataspaceName) {
-        final AnchorDetails anchorDetails = modelMapper.map(anchor, AnchorDetails.class);
-        anchorDetails.setDataspace(dataspaceName);
-        final String anchorName = cpService.createAnchor(anchorDetails);
+    public ResponseEntity<String> createAnchor(final org.onap.cps.rest.model.@Valid Anchor anchor,
+        final String dataspaceName) {
+        final Anchor anchorDetails = modelMapper.map(anchor, Anchor.class);
+        anchorDetails.setDataspaceName(dataspaceName);
+        final String anchorName = cpsAdminService.createAnchor(anchorDetails);
         return new ResponseEntity<String>(anchorName, HttpStatus.CREATED);
     }
 
     @Override
     public ResponseEntity<Object> createModules(@Valid final MultipartFile multipartFile, final String dataspaceName) {
         final File fileToParse = saveToFile(multipartFile);
-        final SchemaContext schemaContext = cpService.parseAndValidateModel(fileToParse);
-        cpService.storeSchemaContext(schemaContext, dataspaceName);
+        final SchemaContext schemaContext = cpsModuleService.parseAndValidateModel(fileToParse);
+        cpsModuleService.storeSchemaContext(schemaContext, dataspaceName);
         return new ResponseEntity<>("Resource successfully created", HttpStatus.CREATED);
     }
 
@@ -105,7 +113,7 @@
 
     @Override
     public ResponseEntity<Object> getModule(final String dataspaceName, @Valid final String namespaceName,
-            @Valid final String revision) {
+        @Valid final String revision) {
         return null;
     }
 
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/entities/SchemaSet.java b/cps-ri/src/main/java/org/onap/cps/spi/entities/SchemaSet.java
new file mode 100644
index 0000000..fe67a60
--- /dev/null
+++ b/cps-ri/src/main/java/org/onap/cps/spi/entities/SchemaSet.java
@@ -0,0 +1,71 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.entities;
+
+import java.io.Serializable;
+import java.util.Set;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.JoinTable;
+import javax.persistence.ManyToMany;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+import javax.validation.constraints.NotNull;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+/**
+ * Entity to store a Schema Set.
+ */
+@Getter
+@Setter
+@NoArgsConstructor
+@Entity
+@Table(name = "schema_set")
+public class SchemaSet implements Serializable {
+
+    private static final long serialVersionUID = 6665056955069047269L;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    @NotNull
+    @Column
+    private String name;
+
+    @NotNull
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "dataspace_id", referencedColumnName = "ID")
+    private Dataspace dataspace;
+
+    @NotNull
+    @ManyToMany(fetch = FetchType.LAZY)
+    @JoinTable(name = "schema_set_yang_resources",
+        joinColumns = @JoinColumn(name = "schema_set_id"),
+        inverseJoinColumns = @JoinColumn(name = "yang_resource_id"))
+    private Set<YangResource> yangResources;
+}
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/entities/YangResource.java b/cps-ri/src/main/java/org/onap/cps/spi/entities/YangResource.java
new file mode 100644
index 0000000..862b7ae
--- /dev/null
+++ b/cps-ri/src/main/java/org/onap/cps/spi/entities/YangResource.java
@@ -0,0 +1,63 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.entities;
+
+import java.io.Serializable;
+import java.util.Set;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.ManyToMany;
+import javax.persistence.Table;
+import javax.validation.constraints.NotNull;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+/**
+ * Entity to store a Yang files.
+ */
+@Getter
+@Setter
+@NoArgsConstructor
+@Entity
+@Table(name = "yang_resource")
+public class YangResource implements Serializable {
+
+    private static final long serialVersionUID = -4496883162142106774L;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @NotNull
+    @Column
+    private String checksum;
+
+    @NotNull
+    @Column
+    private String content;
+
+    @ManyToMany(mappedBy = "yangResources")
+    private Set<SchemaSet> moduleSets;
+
+}
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/impl/FragmentPersistenceServiceImpl.java b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsAdminPersistenceServiceImpl.java
old mode 100755
new mode 100644
similarity index 81%
rename from cps-ri/src/main/java/org/onap/cps/spi/impl/FragmentPersistenceServiceImpl.java
rename to cps-ri/src/main/java/org/onap/cps/spi/impl/CpsAdminPersistenceServiceImpl.java
index 82554b3..684750c
--- a/cps-ri/src/main/java/org/onap/cps/spi/impl/FragmentPersistenceServiceImpl.java
+++ b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsAdminPersistenceServiceImpl.java
@@ -1,72 +1,73 @@
-/*-

- * ============LICENSE_START=======================================================

- *  Copyright (C) 2020 Nordix Foundation. All rights reserved.

- * ================================================================================

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *      http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- *

- * SPDX-License-Identifier: Apache-2.0

- * ============LICENSE_END=========================================================

- */

-

-package org.onap.cps.spi.impl;

-

-import org.onap.cps.api.model.AnchorDetails;

-import org.onap.cps.exceptions.CpsNotFoundException;

-import org.onap.cps.exceptions.CpsValidationException;

-import org.onap.cps.spi.FragmentPersistenceService;

-import org.onap.cps.spi.entities.Dataspace;

-import org.onap.cps.spi.entities.Fragment;

-import org.onap.cps.spi.entities.Module;

-import org.onap.cps.spi.repository.DataspaceRepository;

-import org.onap.cps.spi.repository.FragmentRepository;

-import org.onap.cps.spi.repository.ModuleRepository;

-import org.springframework.beans.factory.annotation.Autowired;

-import org.springframework.dao.DataIntegrityViolationException;

-import org.springframework.stereotype.Component;

-

-@Component

-public class FragmentPersistenceServiceImpl implements FragmentPersistenceService {

-

-    @Autowired

-    private DataspaceRepository dataspaceRepository;

-

-    @Autowired

-    private FragmentRepository fragmentRepository;

-

-    @Autowired

-    private ModuleRepository moduleRepository;

-

-    @Override

-    public String createAnchor(final AnchorDetails anchorDetails) {

-        try {

-            final Dataspace dataspace = dataspaceRepository.getByName(anchorDetails.getDataspace());

-            final Module module =

-                moduleRepository.getByDataspaceAndNamespaceAndRevision(dataspace,

-                anchorDetails.getNamespace(), anchorDetails.getRevision());

-

-            final Fragment fragment = Fragment.builder().xpath(anchorDetails.getAnchorName())

-                .anchorName(anchorDetails.getAnchorName())

-                .dataspace(dataspace).module(module).build();

-

-            fragmentRepository.save(fragment);

-            return anchorDetails.getAnchorName();

-        } catch (final CpsNotFoundException ex) {

-            throw new CpsValidationException("Validation Error",

-                "Dataspace and/or Module do not exist.");

-        } catch (final DataIntegrityViolationException ex) {

-            throw new CpsValidationException("Duplication Error",

-                String.format("Anchor with name %s already exist in dataspace %s.",

-                    anchorDetails.getAnchorName(), anchorDetails.getDataspace()));

-        }

-    }

-}

+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.impl;
+
+import org.onap.cps.exceptions.CpsNotFoundException;
+import org.onap.cps.exceptions.CpsValidationException;
+import org.onap.cps.spi.CpsAdminPersistenceService;
+import org.onap.cps.spi.entities.Dataspace;
+import org.onap.cps.spi.entities.Fragment;
+import org.onap.cps.spi.entities.Module;
+import org.onap.cps.spi.model.Anchor;
+import org.onap.cps.spi.repository.DataspaceRepository;
+import org.onap.cps.spi.repository.FragmentRepository;
+import org.onap.cps.spi.repository.ModuleRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CpsAdminPersistenceServiceImpl implements CpsAdminPersistenceService {
+
+    @Autowired
+    private DataspaceRepository dataspaceRepository;
+
+    @Autowired
+    private FragmentRepository fragmentRepository;
+
+    @Autowired
+    private ModuleRepository moduleRepository;
+
+    @Override
+    public String createAnchor(final Anchor anchor) {
+        final String anchorName = anchor.getAnchorName();
+        try {
+            final Dataspace dataspace = dataspaceRepository.getByName(anchor.getDataspaceName());
+            final Module module =
+                moduleRepository.getByDataspaceAndNamespaceAndRevision(dataspace,
+                    anchor.getNamespace(), anchor.getRevision());
+
+            final Fragment fragment = Fragment.builder().xpath(anchorName)
+                .anchorName(anchorName)
+                .dataspace(dataspace).module(module).build();
+
+            fragmentRepository.save(fragment);
+            return anchorName;
+        } catch (final CpsNotFoundException ex) {
+            throw new CpsValidationException("Validation Error",
+                "Dataspace and/or Module do not exist.");
+        } catch (final DataIntegrityViolationException ex) {
+            throw new CpsValidationException("Duplication Error",
+                String.format("Anchor with name %s already exist in dataspace %s.",
+                    anchorName, anchor.getDataspaceName()));
+        }
+    }
+}
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java
new file mode 100644
index 0000000..52f8034
--- /dev/null
+++ b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java
@@ -0,0 +1,111 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.impl;
+
+import static org.onap.cps.exceptions.CpsExceptionBuilder.duplicateSchemaSetException;
+import static org.onap.cps.exceptions.CpsExceptionBuilder.invalidDataspaceException;
+
+import com.google.common.collect.ImmutableSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import javax.transaction.Transactional;
+import org.onap.cps.spi.CpsModulePersistenceService;
+import org.onap.cps.spi.entities.Dataspace;
+import org.onap.cps.spi.entities.SchemaSet;
+import org.onap.cps.spi.entities.YangResource;
+import org.onap.cps.spi.repository.DataspaceRepository;
+import org.onap.cps.spi.repository.SchemaSetRepository;
+import org.onap.cps.spi.repository.YangResourceRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.stereotype.Component;
+import org.springframework.util.DigestUtils;
+
+@Component
+public class CpsModulePersistenceServiceImpl implements CpsModulePersistenceService {
+
+    @Autowired
+    private YangResourceRepository yangResourceRepository;
+
+    @Autowired
+    private SchemaSetRepository schemaSetRepository;
+
+    @Autowired
+    private DataspaceRepository dataspaceRepository;
+
+    @Override
+    public void storeModule(final String namespace, final String moduleContent, final String revision,
+                            final String dataspaceName) {
+        // TODO this method should be removed as obsolete.
+        // Modules to be processed within schema sets only.
+    }
+
+    @Override
+    @Transactional
+    public void storeSchemaSet(final String dataspaceName, final String schemaSetName,
+                               final Set<String> yangResourcesAsStrings) {
+
+        final Dataspace dataspace = dataspaceRepository.findByName(dataspaceName)
+            .orElseThrow(() -> invalidDataspaceException(dataspaceName));
+
+        final Set<YangResource> yangResources = synchronizeYangResources(yangResourcesAsStrings);
+        final SchemaSet schemaSet = new SchemaSet();
+        schemaSet.setName(schemaSetName);
+        schemaSet.setDataspace(dataspace);
+        schemaSet.setYangResources(yangResources);
+        try {
+            schemaSetRepository.save(schemaSet);
+        } catch (final DataIntegrityViolationException e) {
+            throw duplicateSchemaSetException(dataspaceName, schemaSetName);
+        }
+    }
+
+    private Set<YangResource> synchronizeYangResources(final Set<String> yangResourcesAsStrings) {
+        final Map<String, String> checksumToContentMap = yangResourcesAsStrings.stream()
+            .collect(Collectors.toMap(
+                content -> DigestUtils.md5DigestAsHex(content.getBytes()),
+                content -> content)
+            );
+
+        final List<YangResource> existingYangResources =
+            yangResourceRepository.findAllByChecksumIn(checksumToContentMap.keySet());
+        existingYangResources.forEach(yangFile -> checksumToContentMap.remove(yangFile.getChecksum()));
+
+        final List<YangResource> newYangResources = checksumToContentMap.entrySet().stream()
+            .map(entry -> {
+                final YangResource yangResource = new YangResource();
+                yangResource.setChecksum(entry.getKey());
+                yangResource.setContent(entry.getValue());
+                return yangResource;
+            }).collect(Collectors.toList());
+        if (!newYangResources.isEmpty()) {
+            yangResourceRepository.saveAll(newYangResources);
+        }
+
+        return ImmutableSet.<YangResource>builder()
+            .addAll(existingYangResources)
+            .addAll(newYangResources)
+            .build();
+    }
+
+}
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/impl/ModelPersistenceServiceImpl.java b/cps-ri/src/main/java/org/onap/cps/spi/impl/ModelPersistenceServiceImpl.java
deleted file mode 100755
index 03679b3..0000000
--- a/cps-ri/src/main/java/org/onap/cps/spi/impl/ModelPersistenceServiceImpl.java
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2020 Nordix Foundation
- *  Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
- *  ================================================================================
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  SPDX-License-Identifier: Apache-2.0
- *  ============LICENSE_END=========================================================
- */
-
-package org.onap.cps.spi.impl;
-
-import org.onap.cps.exceptions.CpsValidationException;
-import org.onap.cps.spi.ModelPersistenceService;
-import org.onap.cps.spi.entities.Dataspace;
-import org.onap.cps.spi.entities.Module;
-import org.onap.cps.spi.repository.DataspaceRepository;
-import org.onap.cps.spi.repository.ModuleRepository;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.dao.DataIntegrityViolationException;
-import org.springframework.stereotype.Component;
-
-@Component
-public class ModelPersistenceServiceImpl implements ModelPersistenceService {
-
-    @Autowired
-    private ModuleRepository moduleRepository;
-
-    @Autowired
-    private DataspaceRepository dataspaceRepository;
-
-    @Override
-    public void storeModule(final String namespace, final String moduleContent, final String revision,
-        final String dataspaceName) {
-        final Dataspace dataspace = new Dataspace(dataspaceName);
-        if (Boolean.FALSE.equals(dataspaceRepository.existsByName(dataspaceName))) {
-            dataspaceRepository.save(dataspace);
-        }
-        dataspace.setId(dataspaceRepository.getByName(dataspaceName).getId());
-        final Module module = new Module(namespace, moduleContent, revision, dataspace);
-        try {
-            moduleRepository.save(module);
-        } catch (final DataIntegrityViolationException ex) {
-            throw new CpsValidationException("Duplicate Entry",
-                String.format("Module already exist in dataspace %s.", dataspaceName));
-        }
-    }
-}
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/repository/DataspaceRepository.java b/cps-ri/src/main/java/org/onap/cps/spi/repository/DataspaceRepository.java
index daf0b71..4b64916 100755
--- a/cps-ri/src/main/java/org/onap/cps/spi/repository/DataspaceRepository.java
+++ b/cps-ri/src/main/java/org/onap/cps/spi/repository/DataspaceRepository.java
@@ -21,7 +21,7 @@
 
 import java.util.Optional;
 import javax.validation.constraints.NotNull;
-import org.onap.cps.exceptions.CpsNotFoundException;
+import org.onap.cps.exceptions.DataspaceNotFoundException;
 import org.onap.cps.spi.entities.Dataspace;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
@@ -34,6 +34,6 @@
 
     default Dataspace getByName(@NotNull String name) {
         return findByName(name).orElseThrow(
-            () -> new CpsNotFoundException("Not Found", "Dataspace " + name + " does not exist."));
+            () -> new DataspaceNotFoundException("Dataspace " + name + " does not exist."));
     }
 }
\ No newline at end of file
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/repository/SchemaSetRepository.java b/cps-ri/src/main/java/org/onap/cps/spi/repository/SchemaSetRepository.java
new file mode 100644
index 0000000..f974697
--- /dev/null
+++ b/cps-ri/src/main/java/org/onap/cps/spi/repository/SchemaSetRepository.java
@@ -0,0 +1,36 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.repository;
+
+import java.util.List;
+import java.util.Optional;
+import javax.validation.constraints.NotNull;
+import org.onap.cps.spi.entities.Dataspace;
+import org.onap.cps.spi.entities.SchemaSet;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface SchemaSetRepository extends JpaRepository<SchemaSet, Integer> {
+
+    List<SchemaSet> findAllByDataspace(@NotNull Dataspace dataspace);
+
+    Optional<SchemaSet> findByDataspaceAndName(@NotNull Dataspace dataspace, @NotNull String name);
+}
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/repository/YangResourceRepository.java b/cps-ri/src/main/java/org/onap/cps/spi/repository/YangResourceRepository.java
new file mode 100644
index 0000000..47d3ea3
--- /dev/null
+++ b/cps-ri/src/main/java/org/onap/cps/spi/repository/YangResourceRepository.java
@@ -0,0 +1,34 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.repository;
+
+import java.util.List;
+import java.util.Set;
+import javax.validation.constraints.NotNull;
+import org.onap.cps.spi.entities.YangResource;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface YangResourceRepository extends JpaRepository<YangResource, Long> {
+
+    List<YangResource> findAllByChecksumIn(@NotNull Set<String> checksum);
+
+}
diff --git a/cps-ri/src/main/resources/schema.sql b/cps-ri/src/main/resources/schema.sql
index 3fabc6c..d47f261 100755
--- a/cps-ri/src/main/resources/schema.sql
+++ b/cps-ri/src/main/resources/schema.sql
@@ -17,6 +17,30 @@
     ID SERIAL PRIMARY KEY

 );

 

+CREATE TABLE IF NOT EXISTS SCHEMA_SET

+(

+    ID SERIAL PRIMARY KEY,

+    NAME TEXT NOT NULL,

+    DATASPACE_ID BIGINT NOT NULL,

+    UNIQUE (NAME, DATASPACE_ID),

+    CONSTRAINT SCHEMA_SET_DATASPACE FOREIGN KEY (DATASPACE_ID) REFERENCES DATASPACE(ID) ON UPDATE CASCADE ON DELETE CASCADE

+);

+

+CREATE TABLE IF NOT EXISTS YANG_RESOURCE

+(

+    ID SERIAL PRIMARY KEY,

+    CHECKSUM TEXT NOT NULL,

+    CONTENT TEXT NOT NULL,

+    UNIQUE (CHECKSUM)

+);

+

+CREATE TABLE IF NOT EXISTS SCHEMA_SET_YANG_RESOURCES

+(

+    SCHEMA_SET_ID BIGINT NOT NULL,

+    YANG_RESOURCE_ID BIGINT NOT NULL REFERENCES YANG_RESOURCE(ID),

+    CONSTRAINT SCHEMA_SET_RESOURCE FOREIGN KEY (SCHEMA_SET_ID) REFERENCES SCHEMA_SET(ID) ON DELETE CASCADE

+);

+

 CREATE TABLE IF NOT EXISTS MODULE

 (

     ID SERIAL PRIMARY KEY,

@@ -62,4 +86,4 @@
 CREATE INDEX  IF NOT EXISTS "FKI_RELATIONS_FROM_ID_FK"         ON RELATION USING BTREE(FROM_FRAGMENT_ID);

 CREATE INDEX  IF NOT EXISTS "FKI_RELATIONS_TO_ID_FK"           ON RELATION USING BTREE(TO_FRAGMENT_ID);

 CREATE INDEX  IF NOT EXISTS "PERF_MODULE_MODULE_CONTENT"       ON MODULE USING BTREE(MODULE_CONTENT);

-CREATE UNIQUE INDEX  IF NOT EXISTS "UQ_FRAGMENT_XPATH"ON FRAGMENT USING btree(xpath COLLATE pg_catalog."default" text_pattern_ops, dataspace_id);
\ No newline at end of file
+CREATE UNIQUE INDEX  IF NOT EXISTS "UQ_FRAGMENT_XPATH"ON FRAGMENT USING btree(xpath COLLATE pg_catalog."default" text_pattern_ops, dataspace_id);

diff --git a/cps-service/src/main/java/org/onap/cps/api/CpService.java b/cps-service/src/main/java/org/onap/cps/api/CpService.java
index 726ca0f..29e164d 100755
--- a/cps-service/src/main/java/org/onap/cps/api/CpService.java
+++ b/cps-service/src/main/java/org/onap/cps/api/CpService.java
@@ -20,42 +20,12 @@
 
 package org.onap.cps.api;
 
-import java.io.File;
-import org.onap.cps.api.model.AnchorDetails;
-import org.onap.cps.exceptions.CpsValidationException;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
-
 /**
  * Configuration and persistency service interface which holds methods for parsing and storing yang models and data.
  */
 public interface CpService {
 
     /**
-     * Parse and validate a string representing a yang model to generate a schema context.
-     *
-     * @param yangModelContent the input stream
-     * @return the schema context
-     */
-    SchemaContext parseAndValidateModel(String yangModelContent);
-
-    /**
-     * Parse and validate a file representing a yang model to generate a schema context.
-     *
-     * @param yangModelFile the yang file
-     * @return the schema context
-     */
-    SchemaContext parseAndValidateModel(File yangModelFile);
-
-    /**
-     * Store schema context for a yang model.
-     *
-     * @param schemaContext the schema context
-     * @param dataspaceName the dataspace name
-     * @throws CpsValidationException if input data already exists.
-     */
-    void storeSchemaContext(SchemaContext schemaContext, String dataspaceName);
-
-    /**
      * Store the JSON structure in the database.
      *
      * @param jsonStructure the JSON structure.
@@ -78,12 +48,4 @@
      */
     void deleteJsonById(int jsonObjectId);
 
-    /**
-     * Create an anchor using provided anchorDetails object.
-     *
-     * @param anchorDetails the anchor details object.
-     * @return the anchor name.
-     * @throws CpsValidationException if input data is invalid.
-     */
-    String createAnchor(AnchorDetails anchorDetails);
 }
diff --git a/cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java b/cps-service/src/main/java/org/onap/cps/api/CpsAdminService.java
old mode 100755
new mode 100644
similarity index 64%
copy from cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java
copy to cps-service/src/main/java/org/onap/cps/api/CpsAdminService.java
index 3f0b3c1..406655e
--- a/cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java
+++ b/cps-service/src/main/java/org/onap/cps/api/CpsAdminService.java
@@ -18,22 +18,22 @@
  *  ============LICENSE_END=========================================================
  */
 
-package org.onap.cps.spi;
+package org.onap.cps.api;
+
+import org.onap.cps.exceptions.CpsValidationException;
+import org.onap.cps.spi.model.Anchor;
 
 /**
- * Defines methods to access and manipulate data using the chosen database solution.
+ * CPS Admin Service.
  */
-public interface ModelPersistenceService {
+public interface CpsAdminService {
 
     /**
-     * Store the module from a yang model in the database.
+     * Create an anchor using provided anchorDetails object.
      *
-     * @param namespace module namespace
-     * @param moduleContent module content
-     * @param revision module revision
-     * @param dataspaceName the name of the dataspace the module is associated with
+     * @param anchor the anchor details object.
+     * @return the anchor name.
+     * @throws CpsValidationException if input data is invalid.
      */
-    void storeModule(final String namespace, final String moduleContent, final String revision,
-        final String dataspaceName);
-
+    String createAnchor(Anchor anchor);
 }
diff --git a/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java b/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java
new file mode 100644
index 0000000..ebeeb9a
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.api;
+
+/*
+ * Datastore interface for handling CPS data.
+ */
+public interface CpsDataService {
+
+}
diff --git a/cps-service/src/main/java/org/onap/cps/api/CpsModuleService.java b/cps-service/src/main/java/org/onap/cps/api/CpsModuleService.java
new file mode 100644
index 0000000..02553d0
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/api/CpsModuleService.java
@@ -0,0 +1,55 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.api;
+
+import java.io.File;
+import org.onap.cps.exceptions.CpsValidationException;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+
+/**
+ * Responsible for managing module sets.
+ */
+public interface CpsModuleService {
+
+    /**
+     * Parse and validate a string representing a yang model to generate a schema context.
+     *
+     * @param yangModelContent the input stream
+     * @return the schema context
+     */
+    SchemaContext parseAndValidateModel(String yangModelContent);
+
+    /**
+     * Parse and validate a file representing a yang model to generate a schema context.
+     *
+     * @param yangModelFile the yang file
+     * @return the schema context
+     */
+    SchemaContext parseAndValidateModel(File yangModelFile);
+
+    /**
+     * Store schema context for a yang model.
+     *
+     * @param schemaContext the schema context
+     * @param dataspaceName the dataspace name
+     * @throws CpsValidationException if input data already exists.
+     */
+    void storeSchemaContext(SchemaContext schemaContext, String dataspaceName);
+}
diff --git a/cps-service/src/main/java/org/onap/cps/api/CpsQueryService.java b/cps-service/src/main/java/org/onap/cps/api/CpsQueryService.java
new file mode 100644
index 0000000..a66e084
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/api/CpsQueryService.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.api;
+
+/*
+ * Query interface for handling cps queries.
+ */
+public interface CpsQueryService {
+
+}
diff --git a/cps-service/src/main/java/org/onap/cps/api/impl/CpServiceImpl.java b/cps-service/src/main/java/org/onap/cps/api/impl/CpServiceImpl.java
index 3daf9a0..3ec08cd 100755
--- a/cps-service/src/main/java/org/onap/cps/api/impl/CpServiceImpl.java
+++ b/cps-service/src/main/java/org/onap/cps/api/impl/CpServiceImpl.java
@@ -20,23 +20,8 @@
 
 package org.onap.cps.api.impl;
 
-import java.io.BufferedWriter;
-import java.io.File;
-import java.io.FileWriter;
-import java.io.IOException;
-import java.util.Optional;
 import org.onap.cps.api.CpService;
-import org.onap.cps.api.model.AnchorDetails;
-import org.onap.cps.exceptions.CpsException;
-import org.onap.cps.exceptions.CpsValidationException;
 import org.onap.cps.spi.DataPersistenceService;
-import org.onap.cps.spi.FragmentPersistenceService;
-import org.onap.cps.spi.ModelPersistenceService;
-import org.onap.cps.utils.YangUtils;
-import org.opendaylight.yangtools.yang.common.Revision;
-import org.opendaylight.yangtools.yang.model.api.Module;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
-import org.opendaylight.yangtools.yang.model.parser.api.YangParserException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
@@ -44,38 +29,8 @@
 public class CpServiceImpl implements CpService {
 
     @Autowired
-    private ModelPersistenceService modelPersistenceService;
-
-    @Autowired
     private DataPersistenceService dataPersistenceService;
 
-    @Autowired
-    private FragmentPersistenceService fragmentPersistenceService;
-
-    @Override
-    public final SchemaContext parseAndValidateModel(final String yangModelContent) {
-
-        try {
-            final File tempFile = File.createTempFile("yang", ".yang");
-            try (BufferedWriter writer = new BufferedWriter(new FileWriter(tempFile))) {
-                writer.write(yangModelContent);
-            }
-            return parseAndValidateModel(tempFile);
-        } catch (final IOException e) {
-            throw new CpsException(e);
-        }
-    }
-
-    @Override
-    public final SchemaContext parseAndValidateModel(final File yangModelFile) {
-        try {
-            return YangUtils.parseYangModelFile(yangModelFile);
-        } catch (final YangParserException e) {
-            throw new CpsValidationException("Yang file validation failed", e.getMessage());
-        } catch (final IOException e) {
-            throw new CpsException(e);
-        }
-    }
 
     @Override
     public final Integer storeJsonStructure(final String jsonStructure) {
@@ -91,19 +46,4 @@
     public void deleteJsonById(final int jsonObjectId) {
         dataPersistenceService.deleteJsonById(jsonObjectId);
     }
-
-    @Override
-    public final void storeSchemaContext(final SchemaContext schemaContext, final String dataspaceName) {
-        for (final Module module : schemaContext.getModules()) {
-            final Optional<Revision> optionalRevision = module.getRevision();
-            final String revisionValue = optionalRevision.map(Object::toString).orElse(null);
-            modelPersistenceService.storeModule(module.getNamespace().toString(), module.toString(),
-                revisionValue, dataspaceName);
-        }
-    }
-
-    @Override
-    public String createAnchor(final AnchorDetails anchorDetails) {
-        return fragmentPersistenceService.createAnchor(anchorDetails);
-    }
 }
\ No newline at end of file
diff --git a/cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java b/cps-service/src/main/java/org/onap/cps/api/impl/CpsAdminServiceImpl.java
old mode 100755
new mode 100644
similarity index 62%
copy from cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java
copy to cps-service/src/main/java/org/onap/cps/api/impl/CpsAdminServiceImpl.java
index 3f0b3c1..b4deef6
--- a/cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java
+++ b/cps-service/src/main/java/org/onap/cps/api/impl/CpsAdminServiceImpl.java
@@ -18,22 +18,22 @@
  *  ============LICENSE_END=========================================================
  */
 
-package org.onap.cps.spi;
+package org.onap.cps.api.impl;
 
-/**
- * Defines methods to access and manipulate data using the chosen database solution.
- */
-public interface ModelPersistenceService {
+import org.onap.cps.api.CpsAdminService;
+import org.onap.cps.spi.CpsAdminPersistenceService;
+import org.onap.cps.spi.model.Anchor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
 
-    /**
-     * Store the module from a yang model in the database.
-     *
-     * @param namespace module namespace
-     * @param moduleContent module content
-     * @param revision module revision
-     * @param dataspaceName the name of the dataspace the module is associated with
-     */
-    void storeModule(final String namespace, final String moduleContent, final String revision,
-        final String dataspaceName);
+@Component("CpsAdminServiceImpl")
+public class CpsAdminServiceImpl implements CpsAdminService {
 
+    @Autowired
+    private CpsAdminPersistenceService cpsAdminPersistenceService;
+
+    @Override
+    public String createAnchor(final Anchor anchor) {
+        return cpsAdminPersistenceService.createAnchor(anchor);
+    }
 }
diff --git a/cps-service/src/main/java/org/onap/cps/api/impl/CpsModuleServiceImpl.java b/cps-service/src/main/java/org/onap/cps/api/impl/CpsModuleServiceImpl.java
new file mode 100644
index 0000000..87ffdd3
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/api/impl/CpsModuleServiceImpl.java
@@ -0,0 +1,79 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.api.impl;
+
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.Optional;
+import org.onap.cps.api.CpsModuleService;
+import org.onap.cps.exceptions.CpsException;
+import org.onap.cps.exceptions.CpsValidationException;
+import org.onap.cps.spi.CpsModulePersistenceService;
+import org.onap.cps.utils.YangUtils;
+import org.opendaylight.yangtools.yang.common.Revision;
+import org.opendaylight.yangtools.yang.model.api.Module;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.parser.api.YangParserException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component("CpsModuleServiceImpl")
+public class CpsModuleServiceImpl implements CpsModuleService {
+
+    @Autowired
+    private CpsModulePersistenceService cpsModulePersistenceService;
+
+    @Override
+    public SchemaContext parseAndValidateModel(final String yangModelContent) {
+        try {
+            final File tempFile = File.createTempFile("yang", ".yang");
+            try (BufferedWriter writer = new BufferedWriter(new FileWriter(tempFile))) {
+                writer.write(yangModelContent);
+            }
+            return parseAndValidateModel(tempFile);
+        } catch (final IOException e) {
+            throw new CpsException(e);
+        }
+    }
+
+    @Override
+    public SchemaContext parseAndValidateModel(final File yangModelFile) {
+        try {
+            return YangUtils.parseYangModelFile(yangModelFile);
+        } catch (final YangParserException e) {
+            throw new CpsValidationException("Yang file validation failed", e.getMessage());
+        } catch (final IOException e) {
+            throw new CpsException(e);
+        }
+    }
+
+    @Override
+    public void storeSchemaContext(final SchemaContext schemaContext, final String dataspaceName) {
+        for (final Module module : schemaContext.getModules()) {
+            final Optional<Revision> optionalRevision = module.getRevision();
+            final String revisionValue = optionalRevision.map(Object::toString).orElse(null);
+            cpsModulePersistenceService.storeModule(module.getNamespace().toString(), module.toString(),
+                revisionValue, dataspaceName);
+        }
+    }
+}
diff --git a/cps-service/src/main/java/org/onap/cps/exceptions/CpsAdminException.java b/cps-service/src/main/java/org/onap/cps/exceptions/CpsAdminException.java
new file mode 100644
index 0000000..a088913
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/exceptions/CpsAdminException.java
@@ -0,0 +1,60 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.exceptions;
+
+import lombok.Getter;
+
+/**
+ * CPS Admin exception.
+ */
+public class CpsAdminException extends CpsValidationException {
+
+    private static final long serialVersionUID = 5573438585188332404L;
+
+    /**
+     * Constructor.
+     *
+     * @param cause the cause of the exception
+     */
+    public CpsAdminException(final Throwable cause) {
+        super(cause.getMessage(), cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param cause   the cause of the exception
+     */
+    public CpsAdminException(final  String message, final Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param details the error details
+     */
+    public CpsAdminException(final String message, final String details) {
+        super(message, details);
+        this.details = details;
+    }
+}
diff --git a/cps-service/src/main/java/org/onap/cps/exceptions/CpsExceptionBuilder.java b/cps-service/src/main/java/org/onap/cps/exceptions/CpsExceptionBuilder.java
new file mode 100644
index 0000000..2acbb92
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/exceptions/CpsExceptionBuilder.java
@@ -0,0 +1,94 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.exceptions;
+
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
+/**
+ * Utility class.
+ * Serves error message consistency for same error cases occurred in different CPS modules.
+ */
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class CpsExceptionBuilder {
+
+    private static final String SCHEMA_SET_IS_INVALID = "Schema Set is invalid.";
+
+    /**
+     * Generates validation error exception for case when requested dataspace is absent.
+     *
+     * @param dataspaceName dataspace name
+     */
+    public static CpsException invalidDataspaceException(final String dataspaceName) {
+        return new CpsValidationException("Dataspace is invalid.",
+            String.format("Dataspace with name %s does not exist.", dataspaceName));
+    }
+
+    /**
+     * Generates validation error exception for case when requested schema set is absent for existing dataspace.
+     *
+     * @param dataspaceName dataspace name
+     * @param schemaSetName schema set name
+     */
+    public static CpsException invalidSchemaSetException(final String dataspaceName, final String schemaSetName) {
+        return new CpsValidationException(SCHEMA_SET_IS_INVALID,
+            String.format("Schema Set with name %s was not found for dataspace %s.", schemaSetName, dataspaceName));
+    }
+
+    /**
+     * Returns validation error exception for case when SchemaSet contains no files.
+     */
+    public static CpsException emptySchemaSetException() {
+        return new CpsValidationException(SCHEMA_SET_IS_INVALID, "Schema Set has no YANG resources to store");
+    }
+
+    /**
+     * Generates validation error exception for case when SchemaSet with same name already exists in the dataspace.
+     *
+     * @param dataspaceName dataspace name
+     * @param schemaSetName schema set name
+     */
+    public static CpsException duplicateSchemaSetException(final String dataspaceName, final String schemaSetName) {
+        return new CpsValidationException(SCHEMA_SET_IS_INVALID,
+            String.format("Schema Set with name %s already exists for dataspace %s.", schemaSetName, dataspaceName));
+    }
+
+    /**
+     * Generates no data found exception for case when requested dataspace is absent.
+     *
+     * @param dataspaceName dataspace name
+     */
+    public static CpsException dataspaceNotFoundException(final String dataspaceName) {
+        return new CpsNotFoundException("Dataspace was not found.",
+            String.format("Dataspace with name %s does not exist.", dataspaceName));
+    }
+
+    /**
+     * Generates no data found exception for case when requested SchemaSet is absent for existing dataspace.
+     *
+     * @param dataspaceName dataspace name
+     * @param schemaSetName schema set name
+     */
+    public static CpsException schemaSetNotFoundException(final String dataspaceName, final String schemaSetName) {
+        return new CpsNotFoundException("Schema Set was not found.",
+            String.format("Schema Set with name %s was not found for dataspace %s.", schemaSetName, dataspaceName));
+    }
+
+}
diff --git a/cps-service/src/main/java/org/onap/cps/exceptions/DataspaceNotFoundException.java b/cps-service/src/main/java/org/onap/cps/exceptions/DataspaceNotFoundException.java
new file mode 100644
index 0000000..1b09cdd
--- /dev/null
+++ b/cps-service/src/main/java/org/onap/cps/exceptions/DataspaceNotFoundException.java
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.exceptions;
+
+
+/**
+ * Dataspace Not Found Exception. Indicates the requested data being absent.
+ */
+public class DataspaceNotFoundException extends CpsAdminException {
+
+    private static final long serialVersionUID = -1852996415384288431L;
+
+    /**
+     * Constructor.
+     *
+     * @param cause the cause of the exception
+     */
+    public DataspaceNotFoundException(final Throwable cause) {
+        super(cause.getMessage(), cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param message the error message
+     * @param cause   the cause of the exception
+     */
+    public DataspaceNotFoundException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructor.
+     *
+     * @param details the error details
+     */
+    public DataspaceNotFoundException(final String details) {
+        super("Dataspace Not Found", details);
+    }
+}
diff --git a/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java b/cps-service/src/main/java/org/onap/cps/spi/CpsAdminPersistenceService.java
old mode 100755
new mode 100644
similarity index 82%
rename from cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java
rename to cps-service/src/main/java/org/onap/cps/spi/CpsAdminPersistenceService.java
index 48dbb0c..6709c1f
--- a/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/CpsAdminPersistenceService.java
@@ -1,34 +1,37 @@
-/*-

- * ============LICENSE_START=======================================================

- *  Copyright (C) 2020 Nordix Foundation. All rights reserved.

- * ================================================================================

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *      http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- *

- * SPDX-License-Identifier: Apache-2.0

- * ============LICENSE_END=========================================================

- */

-

-package org.onap.cps.spi;

-

-import org.onap.cps.api.model.AnchorDetails;

-

-public interface FragmentPersistenceService {

-

-    /**

-     * Create an Anchor.

-     *

-     * @param anchorDetails the anchorDetails object.

-     * @return the anchor name.

-     */

-    String createAnchor(AnchorDetails anchorDetails);

-}

+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi;
+
+import org.onap.cps.spi.model.Anchor;
+
+/*
+    Service for handling CPS admin data.
+ */
+public interface CpsAdminPersistenceService {
+
+    /**
+     * Create an Anchor.
+     *
+     * @param anchor the anchorDetails object.
+     * @return the anchor name.
+     */
+    String createAnchor(Anchor anchor);
+}
diff --git a/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java b/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
old mode 100755
new mode 100644
similarity index 75%
copy from cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java
copy to cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
index 48dbb0c..1203706
--- a/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
@@ -1,34 +1,30 @@
-/*-

- * ============LICENSE_START=======================================================

- *  Copyright (C) 2020 Nordix Foundation. All rights reserved.

- * ================================================================================

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *      http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- *

- * SPDX-License-Identifier: Apache-2.0

- * ============LICENSE_END=========================================================

- */

-

-package org.onap.cps.spi;

-

-import org.onap.cps.api.model.AnchorDetails;

-

-public interface FragmentPersistenceService {

-

-    /**

-     * Create an Anchor.

-     *

-     * @param anchorDetails the anchorDetails object.

-     * @return the anchor name.

-     */

-    String createAnchor(AnchorDetails anchorDetails);

-}

+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi;
+
+/*
+    Data Store interface that is responsible for handling yang data.
+    Please follow guidelines in https://gerrit.nordix.org/#/c/onap/ccsdk/features/+/6698/19/cps/interface-proposal/src/main/java/cps/javadoc/spi/DataStoreService.java
+    when adding methods.
+ */
+public interface CpsDataPersistenceService {
+
+}
diff --git a/cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java b/cps-service/src/main/java/org/onap/cps/spi/CpsModulePersistenceService.java
old mode 100755
new mode 100644
similarity index 65%
rename from cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java
rename to cps-service/src/main/java/org/onap/cps/spi/CpsModulePersistenceService.java
index 3f0b3c1..20f0122
--- a/cps-service/src/main/java/org/onap/cps/spi/ModelPersistenceService.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/CpsModulePersistenceService.java
@@ -20,20 +20,36 @@
 
 package org.onap.cps.spi;
 
+import java.util.Set;
+
 /**
- * Defines methods to access and manipulate data using the chosen database solution.
+ * Service to manage modules.
+ *
  */
-public interface ModelPersistenceService {
+public interface CpsModulePersistenceService {
 
     /**
+     * TODO
+     * clean up method to conform with spi proposal - https://jira.onap.org/browse/CPS-103
      * Store the module from a yang model in the database.
      *
-     * @param namespace module namespace
+     * @param namespace     module namespace
      * @param moduleContent module content
-     * @param revision module revision
+     * @param revision      module revision
      * @param dataspaceName the name of the dataspace the module is associated with
      */
+    @Deprecated
     void storeModule(final String namespace, final String moduleContent, final String revision,
-        final String dataspaceName);
+                     final String dataspaceName);
+
+
+    /**
+     * Stores Schema Set.
+     *
+     * @param dataspaceName          dataspace name
+     * @param schemaSetName          schema set name
+     * @param yangResourcesAsStrings the content of YANG resources (files)
+     */
+    void storeSchemaSet(String dataspaceName, String schemaSetName, Set<String> yangResourcesAsStrings);
 
 }
diff --git a/cps-service/src/main/java/org/onap/cps/spi/DataPersistenceService.java b/cps-service/src/main/java/org/onap/cps/spi/DataPersistenceService.java
old mode 100755
new mode 100644
diff --git a/cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java b/cps-service/src/main/java/org/onap/cps/spi/model/Anchor.java
old mode 100755
new mode 100644
similarity index 78%
rename from cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java
rename to cps-service/src/main/java/org/onap/cps/spi/model/Anchor.java
index 576168a..cd1c774
--- a/cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/model/Anchor.java
@@ -1,42 +1,43 @@
-/*-

- * ============LICENSE_START=======================================================

- *  Copyright (C) 2020 Nordix Foundation. All rights reserved.

- * ================================================================================

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *      http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- *

- * SPDX-License-Identifier: Apache-2.0

- * ============LICENSE_END=========================================================

- */

-

-package org.onap.cps.api.model;

-

-import java.io.Serializable;

-import lombok.Getter;

-import lombok.NoArgsConstructor;

-import lombok.Setter;

-

-@Getter

-@Setter

-@NoArgsConstructor

-public class AnchorDetails implements Serializable {

-

-    private static final long serialVersionUID = 1464791260718603291L;

-

-    private String anchorName;

-

-    private String dataspace;

-

-    private String namespace;

-

-    private String revision;

+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.model;
+
+import java.io.Serializable;
+import java.util.Map;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Setter
+@Getter
+@NoArgsConstructor
+public class Anchor implements Serializable {
+
+    // anchor will support both a single module and schema set until CPS-99 is complete
+    private static final long serialVersionUID = 1464791260718603291L;
+    private String anchorName;
+    private String dataspaceName;
+    private String namespace;
+    private String revision;
+    private String moduleSetName;
+    private Map<String, String> externalReferences;
+    private String xpath;
 }
\ No newline at end of file
diff --git a/cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java b/cps-service/src/main/java/org/onap/cps/spi/model/DataNode.java
old mode 100755
new mode 100644
similarity index 74%
copy from cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java
copy to cps-service/src/main/java/org/onap/cps/spi/model/DataNode.java
index 576168a..5ed45ad
--- a/cps-service/src/main/java/org/onap/cps/api/model/AnchorDetails.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/model/DataNode.java
@@ -1,42 +1,41 @@
-/*-

- * ============LICENSE_START=======================================================

- *  Copyright (C) 2020 Nordix Foundation. All rights reserved.

- * ================================================================================

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *      http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- *

- * SPDX-License-Identifier: Apache-2.0

- * ============LICENSE_END=========================================================

- */

-

-package org.onap.cps.api.model;

-

-import java.io.Serializable;

-import lombok.Getter;

-import lombok.NoArgsConstructor;

-import lombok.Setter;

-

-@Getter

-@Setter

-@NoArgsConstructor

-public class AnchorDetails implements Serializable {

-

-    private static final long serialVersionUID = 1464791260718603291L;

-

-    private String anchorName;

-

-    private String dataspace;

-

-    private String namespace;

-

-    private String revision;

-}
\ No newline at end of file
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.model;
+
+import java.util.Collection;
+import java.util.Map;
+import lombok.Builder;
+import lombok.Data;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Data
+@Builder
+public class DataNode {
+
+    private String dataspace;
+    private String moduleSetName;
+    private ModuleRef moduleRef;
+    private String xpath;
+    private Map<String, Object> leaves;
+    private Collection<String> xpathsChildren;
+}
diff --git a/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java b/cps-service/src/main/java/org/onap/cps/spi/model/ModuleRef.java
old mode 100755
new mode 100644
similarity index 74%
copy from cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java
copy to cps-service/src/main/java/org/onap/cps/spi/model/ModuleRef.java
index 48dbb0c..1f4e64a
--- a/cps-service/src/main/java/org/onap/cps/spi/FragmentPersistenceService.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/model/ModuleRef.java
@@ -1,34 +1,32 @@
-/*-

- * ============LICENSE_START=======================================================

- *  Copyright (C) 2020 Nordix Foundation. All rights reserved.

- * ================================================================================

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *      http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- *

- * SPDX-License-Identifier: Apache-2.0

- * ============LICENSE_END=========================================================

- */

-

-package org.onap.cps.spi;

-

-import org.onap.cps.api.model.AnchorDetails;

-

-public interface FragmentPersistenceService {

-

-    /**

-     * Create an Anchor.

-     *

-     * @param anchorDetails the anchorDetails object.

-     * @return the anchor name.

-     */

-    String createAnchor(AnchorDetails anchorDetails);

-}

+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.spi.model;
+
+import lombok.Builder;
+import lombok.Data;
+
+@Data
+@Builder
+public class ModuleRef {
+
+    private String namespace;
+    private String revision;
+}
diff --git a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpServiceImplSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpServiceImplSpec.groovy
index 2a3d5cb..873aba7 100755
--- a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpServiceImplSpec.groovy
+++ b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpServiceImplSpec.groovy
@@ -20,24 +20,17 @@
 
 package org.onap.cps.api.impl
 
-import org.onap.cps.TestUtils
-import org.onap.cps.api.model.AnchorDetails
-import org.onap.cps.exceptions.CpsValidationException
+
 import org.onap.cps.spi.DataPersistenceService
-import org.onap.cps.spi.FragmentPersistenceService
-import org.opendaylight.yangtools.yang.common.Revision
-import org.opendaylight.yangtools.yang.model.api.SchemaContext
 import spock.lang.Specification
 
 class CpServiceImplSpec extends Specification {
 
     def mockDataPersistenceService = Mock(DataPersistenceService)
-    def mockFragmentPersistenceService = Mock(FragmentPersistenceService)
     def objectUnderTest = new CpServiceImpl()
 
     def setup() {
         objectUnderTest.dataPersistenceService = mockDataPersistenceService
-        objectUnderTest.fragmentPersistenceService = mockFragmentPersistenceService
     }
 
     def 'Cps Service provides to its client the id assigned by the system when storing a data structure'() {
@@ -47,44 +40,6 @@
             objectUnderTest.storeJsonStructure('') == 123
     }
 
-    def 'Parse and Validate a Yang Model with a Valid Yang Model'() {
-        given: 'a yang model (file)'
-            def yangModel = TestUtils.getResourceFileContent('bookstore.yang')
-        when: 'a valid model is parsed and validated'
-            def result = objectUnderTest.parseAndValidateModel(yangModel)
-        then: 'Verify a schema context for that model is created with the correct identity'
-            assertModule(result)
-    }
-
-    def 'Parse and Validate a Yang Model Using a File'() {
-        given: 'a yang file that contains a yang model'
-            File file = new File(ClassLoader.getSystemClassLoader().getResource('bookstore.yang').getFile())
-        when: 'a model is parsed and validated'
-            def result = objectUnderTest.parseAndValidateModel(file)
-        then: 'Verify a schema context for that model is created with the correct identity'
-            assertModule(result)
-
-    }
-
-    def assertModule(SchemaContext schemaContext){
-        def optionalModule = schemaContext.findModule('stores', Revision.of('2020-09-15'))
-        return schemaContext.modules.size() == 1 && optionalModule.isPresent()
-    }
-
-    def 'Parse and Validate an Invalid Model'() {
-        given: 'a yang file that contains a invalid yang model'
-            File file = new File(ClassLoader.getSystemClassLoader().getResource('invalid.yang').getFile())
-        when: 'the model is parsed and validated'
-            objectUnderTest.parseAndValidateModel(file)
-        then: 'a CpsValidationException is thrown'
-            thrown(CpsValidationException)
-    }
-
-    def 'Store a SchemaContext'() {
-        expect: 'No exception to be thrown when a valid model (schema) is stored'
-            objectUnderTest.storeSchemaContext(Stub(SchemaContext.class), "sampleDataspace")
-    }
-
     def 'Read a JSON object with a valid identifier'(){
         given: 'that the data persistence service returns a JSON structure for identifier 1'
             mockDataPersistenceService.getJsonById(1) >> '{name : hello}'
@@ -117,54 +72,4 @@
         then: 'the same exception is thrown by CPS'
             thrown(IllegalStateException)
     }
-
-    def 'Create an anchor with a non-existant dataspace'(){
-        given: 'that the dataspace does not exist service throws an exception'
-            AnchorDetails anchorDetails = new AnchorDetails()
-            anchorDetails.setDataspace('dummyDataspace')
-            mockFragmentPersistenceService.createAnchor(anchorDetails) >> {throw new CpsValidationException(_ as String, _ as String)}
-        when: 'we try to create a anchor with a non-existant dataspace'
-            objectUnderTest.createAnchor(anchorDetails)
-        then: 'the same exception is thrown by CPS'
-            thrown(CpsValidationException)
-    }
-
-    def 'Create an anchor with invalid dataspace, namespace and revision'(){
-        given: 'that the dataspace, namespace and revison combination does not exist service throws an exception'
-            AnchorDetails anchorDetails = new AnchorDetails()
-            anchorDetails.setDataspace('dummyDataspace')
-            anchorDetails.setNamespace('dummyNamespace')
-            anchorDetails.setRevision('dummyRevision')
-            mockFragmentPersistenceService.createAnchor(anchorDetails) >> {throw new CpsValidationException(_ as String, _ as String)}
-        when: 'we try to create a anchor with a non-existant dataspace, namespace and revison combination'
-            objectUnderTest.createAnchor(anchorDetails)
-        then: 'the same exception is thrown by CPS'
-            thrown(CpsValidationException)
-    }
-
-    def 'Create a duplicate anchor'(){
-        given: 'that the anchor already exist service throws an exception'
-            AnchorDetails anchorDetails = new AnchorDetails()
-            anchorDetails.setDataspace('dummyDataspace')
-            anchorDetails.setNamespace('dummyNamespace')
-            anchorDetails.setRevision('dummyRevision')
-            anchorDetails.setRevision('dummyAnchorName')
-            mockFragmentPersistenceService.createAnchor(anchorDetails) >> {throw new CpsValidationException(_ as String, _ as String)}
-        when: 'we try to create a duplicate anchor'
-            objectUnderTest.createAnchor(anchorDetails)
-        then: 'the same exception is thrown by CPS'
-            thrown(CpsValidationException)
-    }
-
-    def 'Create an anchor with supplied anchor name, dataspace, namespace and revision'(){
-        given: 'that the anchor does not pre-exist service creates an anchor'
-            AnchorDetails anchorDetails = new AnchorDetails()
-            anchorDetails.setDataspace('dummyDataspace')
-            anchorDetails.setNamespace('dummyNamespace')
-            anchorDetails.setRevision('dummyRevision')
-            anchorDetails.setRevision('dummyAnchorName')
-            mockFragmentPersistenceService.createAnchor(anchorDetails) >> 'dummyAnchorName'
-        expect: 'anchor name is returned by service'
-            objectUnderTest.createAnchor(anchorDetails) == 'dummyAnchorName'
-    }
 }
diff --git a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsAdminPersistenceServiceImplSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsAdminPersistenceServiceImplSpec.groovy
new file mode 100644
index 0000000..465badd
--- /dev/null
+++ b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsAdminPersistenceServiceImplSpec.groovy
@@ -0,0 +1,86 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.api.impl
+
+import org.onap.cps.exceptions.CpsValidationException
+import org.onap.cps.spi.CpsAdminPersistenceService
+import org.onap.cps.spi.model.Anchor
+import spock.lang.Specification
+
+class CpsAdminPersistenceServiceImplSpec extends Specification {
+    def mockCpsAdminService = Mock(CpsAdminPersistenceService)
+    def objectUnderTest = new CpsAdminServiceImpl()
+
+    def setup() {
+        objectUnderTest.cpsAdminPersistenceService = mockCpsAdminService
+    }
+
+    def 'Create an anchor with a non-existant dataspace'() {
+        given: 'that the dataspace does not exist service throws an exception'
+            Anchor anchor = new Anchor()
+            anchor.setDataspaceName('dummyDataspace')
+            mockCpsAdminService.createAnchor(anchor) >> { throw new CpsValidationException(_ as String, _ as String) }
+        when: 'we try to create a anchor with a non-existant dataspace'
+            objectUnderTest.createAnchor(anchor)
+        then: 'the same exception is thrown by CPS'
+            thrown(CpsValidationException)
+    }
+
+    def 'Create an anchor with invalid dataspace, namespace and revision'() {
+        given: 'that the dataspace, namespace and revison combination does not exist service throws an exception'
+            Anchor anchor = new Anchor()
+            anchor.setDataspaceName('dummyDataspace')
+            anchor.setNamespace('dummyNamespace')
+            anchor.setRevision('dummyRevision')
+            mockCpsAdminService.createAnchor(anchor) >> { throw new CpsValidationException(_ as String, _ as String) }
+        when: 'we try to create a anchor with a non-existant dataspace, namespace and revison combination'
+            objectUnderTest.createAnchor(anchor)
+        then: 'the same exception is thrown by CPS'
+            thrown(CpsValidationException)
+    }
+
+    def 'Create a duplicate anchor'() {
+        given: 'that the anchor already exist service throws an exception'
+            Anchor anchor = new Anchor()
+            anchor.setDataspaceName('dummyDataspace')
+            anchor.setNamespace('dummyNamespace')
+            anchor.setRevision('dummyRevision')
+            anchor.setRevision('dummyAnchorName')
+            mockCpsAdminService.createAnchor(anchor) >> { throw new CpsValidationException(_ as String, _ as String) }
+        when: 'we try to create a duplicate anchor'
+            objectUnderTest.createAnchor(anchor)
+        then: 'the same exception is thrown by CPS'
+            thrown(CpsValidationException)
+    }
+
+    def 'Create an anchor with supplied anchor name, dataspace, namespace and revision'() {
+        given: 'that the anchor does not pre-exist service creates an anchor'
+            Anchor anchor = new Anchor()
+            anchor.setDataspaceName('dummyDataspace')
+            anchor.setNamespace('dummyNamespace')
+            anchor.setRevision('dummyRevision')
+            anchor.setRevision('dummyAnchorName')
+            mockCpsAdminService.createAnchor(anchor) >> 'dummyAnchorName'
+        expect: 'anchor name is returned by service'
+            objectUnderTest.createAnchor(anchor) == 'dummyAnchorName'
+    }
+
+}
diff --git a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModulePersistenceServiceImplSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModulePersistenceServiceImplSpec.groovy
new file mode 100644
index 0000000..79b981b
--- /dev/null
+++ b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsModulePersistenceServiceImplSpec.groovy
@@ -0,0 +1,76 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.api.impl
+
+import org.onap.cps.TestUtils
+import org.onap.cps.exceptions.CpsValidationException
+import org.onap.cps.spi.CpsModulePersistenceService
+import org.opendaylight.yangtools.yang.common.Revision
+import org.opendaylight.yangtools.yang.model.api.SchemaContext
+import spock.lang.Specification
+
+class CpsModulePersistenceServiceImplSpec extends Specification {
+    def mockModuleStoreService = Mock(CpsModulePersistenceService)
+    def objectUnderTest = new CpsModuleServiceImpl()
+
+    def setup() {
+        objectUnderTest.cpsModulePersistenceService = mockModuleStoreService
+    }
+
+    def 'Parse and Validate a Yang Model with a Valid Yang Model'() {
+        given: 'a yang model (file)'
+            def yangModel = TestUtils.getResourceFileContent('bookstore.yang')
+        when: 'a valid model is parsed and validated'
+            def result = objectUnderTest.parseAndValidateModel(yangModel)
+        then: 'Verify a schema context for that model is created with the correct identity'
+            assertModule(result)
+    }
+
+    def 'Parse and Validate a Yang Model Using a File'() {
+        given: 'a yang file that contains a yang model'
+            File file = new File(ClassLoader.getSystemClassLoader().getResource('bookstore.yang').getFile())
+        when: 'a model is parsed and validated'
+            def result = objectUnderTest.parseAndValidateModel(file)
+        then: 'Verify a schema context for that model is created with the correct identity'
+            assertModule(result)
+
+    }
+
+    def assertModule(SchemaContext schemaContext) {
+        def optionalModule = schemaContext.findModule('stores', Revision.of('2020-09-15'))
+        return schemaContext.modules.size() == 1 && optionalModule.isPresent()
+    }
+
+    def 'Parse and Validate an Invalid Model'() {
+        given: 'a yang file that contains a invalid yang model'
+            File file = new File(ClassLoader.getSystemClassLoader().getResource('invalid.yang').getFile())
+        when: 'the model is parsed and validated'
+            objectUnderTest.parseAndValidateModel(file)
+        then: 'a CpsValidationException is thrown'
+            thrown(CpsValidationException)
+    }
+
+    def 'Store a SchemaContext'() {
+        expect: 'No exception to be thrown when a valid model (schema) is stored'
+            objectUnderTest.storeSchemaContext(Stub(SchemaContext.class), "sampleDataspace")
+    }
+
+}