Adding Junit for plugins-persistence-jpa-hibernate

Change-Id: Iacfffb1adebabe7c4f0f40d9c76b6bd3d503b283
Issue-ID: POLICY-862
Signed-off-by: Dinh Danh Le <dinh.danh.le@ericsson.com>

4 files changed, 619 insertions, 0 deletions

diff --git a/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/ArtifactKeyTestEntity.java b/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/ArtifactKeyTestEntity.java
new file mode 100644
index 000000000..1da724a87
--- /dev/null
+++ b/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/ArtifactKeyTestEntity.java
@@ -0,0 +1,162 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 Ericsson. 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.policy.apex.plugins.persistence.jpa.hibernate;
+
+import java.util.Arrays;
+import java.util.List;
+
+import javax.persistence.EmbeddedId;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.xml.bind.annotation.XmlElement;
+
+import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
+import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
+import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
+
+@Entity
+@Table(name = "ArtifactKeyTestEntity")
+public class ArtifactKeyTestEntity extends AxConcept {
+    private static final long serialVersionUID = -2962570563281067895L;
+
+    @EmbeddedId()
+    @XmlElement(name = "key", required = true)
+    protected AxArtifactKey key;
+
+    private double doubleValue;
+
+    public ArtifactKeyTestEntity() {
+        this.key = new AxArtifactKey();
+        this.doubleValue = 0;
+    }
+
+    public ArtifactKeyTestEntity(final Double doubleValue) {
+        this.key = new AxArtifactKey();
+        this.doubleValue = doubleValue;
+    }
+
+    public ArtifactKeyTestEntity(final AxArtifactKey key, final Double doubleValue) {
+        this.key = key;
+        this.doubleValue = doubleValue;
+    }
+
+    public AxArtifactKey getKey() {
+        return key;
+    }
+
+    public List<AxKey> getKeys() {
+        return Arrays.asList((AxKey) getKey());
+    }
+
+    public void setKey(final AxArtifactKey key) {
+        this.key = key;
+    }
+
+    public boolean checkSetKey() {
+        return (this.key != null);
+    }
+
+    public double getDoubleValue() {
+        return doubleValue;
+    }
+
+    public void setDoubleValue(final double doubleValue) {
+        this.doubleValue = doubleValue;
+    }
+
+    @Override
+    public AxValidationResult validate(final AxValidationResult result) {
+        return key.validate(result);
+    }
+
+    @Override
+    public void clean() {
+        key.clean();
+    }
+
+    @Override
+    public String toString() {
+        return "ArtifactKeyTestEntity [key=" + key + ", doubleValue=" + doubleValue + "]";
+    }
+
+    @Override
+    public AxConcept copyTo(final AxConcept target) {
+        final Object copyObject = ((target == null) ? new ArtifactKeyTestEntity() : target);
+        if (copyObject instanceof ArtifactKeyTestEntity) {
+            final ArtifactKeyTestEntity copy = ((ArtifactKeyTestEntity) copyObject);
+            if (this.checkSetKey()) {
+                copy.setKey(new AxArtifactKey(key));
+            } else {
+                copy.key = null;
+            }
+            copy.doubleValue = doubleValue;
+            return copy;
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((key == null) ? 0 : key.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (obj == null)
+            return false;
+        if (this == obj)
+            return true;
+        if (getClass() != obj.getClass())
+            return false;
+        final ArtifactKeyTestEntity other = (ArtifactKeyTestEntity) obj;
+        if (key == null) {
+            if (other.key != null)
+                return false;
+        } else if (!key.equals(other.key))
+            return false;
+        if (doubleValue != other.doubleValue)
+            return false;
+        return true;
+    }
+
+    @Override
+    public int compareTo(final AxConcept otherObj) {
+        if (otherObj == null)
+            return -1;
+        if (this == otherObj)
+            return 0;
+        final ArtifactKeyTestEntity other = (ArtifactKeyTestEntity) otherObj;
+        if (key == null) {
+            if (other.key != null)
+                return 1;
+        } else if (!key.equals(other.key))
+            return key.compareTo(other.key);
+        if (doubleValue != other.doubleValue)
+            return new Double(doubleValue).compareTo(other.doubleValue);
+
+        return 0;
+    }
+}
diff --git a/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/HibernateApexDaoTest.java b/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/HibernateApexDaoTest.java
new file mode 100644
index 000000000..894b7bac1
--- /dev/null
+++ b/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/HibernateApexDaoTest.java
@@ -0,0 +1,249 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 Ericsson. 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.policy.apex.plugins.persistence.jpa.hibernate;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
+import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
+import org.onap.policy.apex.model.basicmodel.dao.DAOParameters;
+
+/**
+ * unit test for class HibernateApexDao
+ * 
+ * @author Dinh Danh Le (dinh.danh.le@ericsson.com)
+ *
+ */
+
+public class HibernateApexDaoTest {
+
+    private static final List<AxArtifactKey> TEST_ARTIKEYS = Arrays.asList(new AxArtifactKey[] {
+            new AxArtifactKey("ABC", "0.0.1"), new AxArtifactKey("DEF", "0.1.1"), new AxArtifactKey("XYZ", "1.1.1")});
+
+    private final DAOParameters daoParameters = new DAOParameters();
+
+    private HibernateApexDao hibernateApexDao = null;
+
+    @Before
+    public void setupDAO() throws ApexException {
+        daoParameters.setPluginClass(HibernateApexDao.class.getCanonicalName());
+        daoParameters.setPersistenceUnit("HiDAOtest");
+        hibernateApexDao = new HibernateApexDao();
+        hibernateApexDao.init(daoParameters);
+    }
+
+    @After
+    public void teardownDAO() {
+        hibernateApexDao.close();
+    }
+
+    @Test
+    public void test_NullArguments() {
+        final AxArtifactKey nullArtifactKey = null;
+        final AxArtifactKey nullRefernceKey = null;
+        final List<Object> emptyList = Collections.emptyList();
+
+        assertNull(hibernateApexDao.getArtifact(null, nullArtifactKey));
+        assertNull(hibernateApexDao.getArtifact(ArtifactKeyTestEntity.class, nullArtifactKey));
+
+        assertNull(hibernateApexDao.getArtifact(null, nullRefernceKey));
+        assertNull(hibernateApexDao.getArtifact(ReferenceKeyTestEntity.class, nullRefernceKey));
+
+        assertNotNull(hibernateApexDao.getAll(null));
+        assertTrue(hibernateApexDao.getAll(null).equals(emptyList));
+        assertNotNull(hibernateApexDao.getAll(ReferenceKeyTestEntity.class));
+    }
+
+    @Test
+    public void test_createObject() throws ApexException {
+        // create 3 more entities from testArtiKeys
+        for (final AxArtifactKey akey : TEST_ARTIKEYS) {
+            hibernateApexDao.create(new ReferenceKeyTestEntity(new AxReferenceKey(akey), Math.random() + 100.0));
+        }
+        assertEquals(3, hibernateApexDao.getAll(ReferenceKeyTestEntity.class).size());
+    }
+
+    @Test
+    public void test_getAll() {
+        // create a list of three entities from testArtiKeys
+        final double[] genDoubleVals = new double[TEST_ARTIKEYS.size()];
+
+        for (int i = 0; i < TEST_ARTIKEYS.size(); i++) {
+            final AxArtifactKey akey = TEST_ARTIKEYS.get(i);
+            genDoubleVals[i] = Math.random();
+            hibernateApexDao.create(new ReferenceKeyTestEntity(new AxReferenceKey(akey), genDoubleVals[i]));
+        }
+
+        final List<ReferenceKeyTestEntity> ret = hibernateApexDao.getAll(ReferenceKeyTestEntity.class);
+        assertEquals(TEST_ARTIKEYS.size(), ret.size());
+
+        for (int i = 0; i < TEST_ARTIKEYS.size(); i++) {
+            final ReferenceKeyTestEntity e = ret.get(i);
+            assertEquals(TEST_ARTIKEYS.get(i), e.getKey().getParentArtifactKey());
+            assertEquals(genDoubleVals[i], e.getDoubleValue(), 0.0);
+        }
+    }
+
+
+    @Test
+    public void test_getArtifactByReferenceKey() {
+        final AxArtifactKey artifactKey = new AxArtifactKey("XXX", "0.0.1");
+        final AxReferenceKey referenceKey = new AxReferenceKey(artifactKey, "Entity1");
+
+        // assert null if Entity Class is null
+        assertNull(hibernateApexDao.getArtifact(null, referenceKey));
+
+        // create PersistenceContext with an entity
+        hibernateApexDao.create(new ReferenceKeyTestEntity(referenceKey, 1.0));
+        // assert null when trying to find an entity with an unknown key
+        final AxArtifactKey anotherArtifactKey = new AxArtifactKey("YYY", "0.0.2");
+        final AxReferenceKey anotherReferenceKey = new AxReferenceKey(anotherArtifactKey);
+
+        assertNull(hibernateApexDao.getArtifact(ReferenceKeyTestEntity.class, anotherReferenceKey));
+
+        // assert return only one entity when finding an entity with correct key
+        final ReferenceKeyTestEntity retEntity =
+                hibernateApexDao.getArtifact(ReferenceKeyTestEntity.class, referenceKey);
+        assertEquals(referenceKey, retEntity.getKey());
+    }
+
+
+    @Test
+    public void test_getArtifactByArtifactKey() {
+        final AxArtifactKey artifactKey = new AxArtifactKey("XXX", "0.0.1");
+        // assert null if either Entity Class is null
+        assertNull(hibernateApexDao.getArtifact(null, artifactKey));
+        // create an entity
+        hibernateApexDao.create(new ArtifactKeyTestEntity(artifactKey, 1.0));
+
+        // assert null when trying to find an entity with an unknown key
+        final AxArtifactKey otherArtifactKey = new AxArtifactKey("YYY", "0.0.2");
+        assertNull(hibernateApexDao.getArtifact(ArtifactKeyTestEntity.class, otherArtifactKey));
+
+        // assert return only one entity when finding an entity with correct key
+        final ArtifactKeyTestEntity retEntity = hibernateApexDao.getArtifact(ArtifactKeyTestEntity.class, artifactKey);
+        assertNotNull(retEntity);
+        assertEquals(artifactKey, retEntity.getKey());
+    }
+
+
+    @Test
+    public void test_deleteByArtifactKey() {
+        // initialize a list of (3) entities corresponding to the list of testArtiKeys
+        for (final AxArtifactKey akey : TEST_ARTIKEYS) {
+            hibernateApexDao.create(new ArtifactKeyTestEntity(akey, Math.random()));
+        }
+        // create one more entity
+        final ArtifactKeyTestEntity entity = new ArtifactKeyTestEntity(new AxArtifactKey("XYZ", "100.0.0"), 100.0);
+        hibernateApexDao.create(entity);
+
+        assertEquals(3, hibernateApexDao.deleteByArtifactKey(ArtifactKeyTestEntity.class, TEST_ARTIKEYS));
+
+        // after deleteByArtifactKey()--> getAll().size() == 1
+        final List<ArtifactKeyTestEntity> remainingEntities = hibernateApexDao.getAll(ArtifactKeyTestEntity.class);
+        assertEquals(1, remainingEntities.size());
+        // more details about the remainingEntities
+        assertEquals(100.0, remainingEntities.get(0).getDoubleValue(), 0.0);
+    }
+
+
+    @Test
+    public void test_deleteByReferenceKey() {
+        // prepare 2 AxArtifactKeys
+        final AxArtifactKey owner0Key = new AxArtifactKey("Owner0", "0.0.1");
+        final AxArtifactKey owner1Key = new AxArtifactKey("Owner1", "0.0.1");
+
+        // prepare a list of (3) AxReferenceKeys corresponding to owner0Key
+        final List<AxReferenceKey> refKey0s =
+                Arrays.asList(new AxReferenceKey[] {new AxReferenceKey(owner0Key, "Entity01"),
+                        new AxReferenceKey(owner0Key, "Entity02"), new AxReferenceKey(owner0Key, "Entity03")});
+        // prepare 2 more AxReferenceKeys corresponding to owner1Key
+        final AxReferenceKey refKey11 = new AxReferenceKey(owner1Key, "Entity11");
+        final AxReferenceKey refKey12 = new AxReferenceKey(owner1Key, "Entity12");
+
+        // create a list of 5 entities
+        hibernateApexDao.create(new ReferenceKeyTestEntity(refKey0s.get(0), 101.0));
+        hibernateApexDao.create(new ReferenceKeyTestEntity(refKey0s.get(1), 102.0));
+        hibernateApexDao.create(new ReferenceKeyTestEntity(refKey0s.get(2), 103.0));
+        hibernateApexDao.create(new ReferenceKeyTestEntity(refKey11, 104.0));
+        hibernateApexDao.create(new ReferenceKeyTestEntity(refKey12, 105.0));
+
+        // assert 3 entities are deleted by this deletion
+        assertEquals(3, hibernateApexDao.deleteByReferenceKey(ReferenceKeyTestEntity.class, refKey0s));
+        // after deletion, make sure getAll().size() == 2
+        assertEquals(2, hibernateApexDao.getAll(ReferenceKeyTestEntity.class).size());
+    }
+
+    @Test
+    public void test_deleteAll() {
+        // initialize a list of (3) entities and add to the PersistenceContext
+        for (final AxArtifactKey akey : TEST_ARTIKEYS) {
+            hibernateApexDao.create(new ReferenceKeyTestEntity(new AxReferenceKey(akey), Math.random()));
+        }
+        // before deleteAll()--> getAll().size() == 3
+        assertEquals(3, hibernateApexDao.getAll(ReferenceKeyTestEntity.class).size());
+        hibernateApexDao.deleteAll(ReferenceKeyTestEntity.class);
+        // after deleteAll()--> getAll().size() == 0
+        assertEquals(0, hibernateApexDao.getAll(ReferenceKeyTestEntity.class).size());
+    }
+
+
+    @Test
+    public void test_getAllByArtifactKey() {
+
+        final AxArtifactKey artiKey0 = new AxArtifactKey("XYZA", "0.1.2");
+        final AxArtifactKey artiKey1 = new AxArtifactKey("ONAP", "0.0.1");
+
+        final AxReferenceKey refKey0 = new AxReferenceKey(artiKey0, "Entity0");
+        final AxReferenceKey refKey1 = new AxReferenceKey(artiKey1, "Entity1");
+
+
+        // test with null class with known key --> return an empty list
+        assertNotNull(hibernateApexDao.getAll(null, artiKey1));
+        assertTrue(hibernateApexDao.getAll(null, artiKey1).equals(Collections.emptyList()));
+
+        // test with (not_null) ArtifactKeyTestEntity class
+        assertEquals(0, hibernateApexDao.getAll(ReferenceKeyTestEntity.class, artiKey0).size());
+        // create 2 entities
+        hibernateApexDao.create(new ReferenceKeyTestEntity(refKey0, 100.0));
+        hibernateApexDao.create(new ReferenceKeyTestEntity(refKey0, 200.0));
+        hibernateApexDao.create(new ReferenceKeyTestEntity(refKey1, 100.0));
+
+        final List<ReferenceKeyTestEntity> ret = hibernateApexDao.getAll(ReferenceKeyTestEntity.class, artiKey0);
+        assertEquals(1, ret.size());
+        final ReferenceKeyTestEntity retEntity = ret.get(0);
+        assertEquals(200.0, retEntity.getDoubleValue(), 0);
+    }
+
+
+
+}
diff --git a/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/ReferenceKeyTestEntity.java b/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/ReferenceKeyTestEntity.java
new file mode 100644
index 000000000..991b4e2d7
--- /dev/null
+++ b/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/java/org/onap/policy/apex/plugins/persistence/jpa/hibernate/ReferenceKeyTestEntity.java
@@ -0,0 +1,165 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 Ericsson. 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.policy.apex.plugins.persistence.jpa.hibernate;
+
+import java.util.Arrays;
+import java.util.List;
+
+import javax.persistence.EmbeddedId;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
+
+import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
+import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
+import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
+import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
+import org.onap.policy.apex.model.basicmodel.xml.AxReferenceKeyAdapter;
+
+@Entity
+@Table(name = "ReferenceKeyTestEntity")
+public class ReferenceKeyTestEntity extends AxConcept {
+    private static final long serialVersionUID = -2962570563281067894L;
+
+    @EmbeddedId()
+    @XmlElement(name = "key", required = true)
+    @XmlJavaTypeAdapter(AxReferenceKeyAdapter.class)
+    protected AxReferenceKey key;
+
+    private double doubleValue;
+
+    public ReferenceKeyTestEntity() {
+        this.key = new AxReferenceKey();
+        this.doubleValue = 0;
+    }
+
+    public ReferenceKeyTestEntity(final Double doubleValue) {
+        this.key = new AxReferenceKey();
+        this.doubleValue = doubleValue;
+    }
+
+    public ReferenceKeyTestEntity(final AxReferenceKey key, final Double doubleValue) {
+        this.key = key;
+        this.doubleValue = doubleValue;
+    }
+
+    public AxReferenceKey getKey() {
+        return key;
+    }
+
+    public List<AxKey> getKeys() {
+        return Arrays.asList((AxKey) getKey());
+    }
+
+    public void setKey(final AxReferenceKey key) {
+        this.key = key;
+    }
+
+    public boolean checkSetKey() {
+        return (this.key != null);
+    }
+
+    public double getDoubleValue() {
+        return doubleValue;
+    }
+
+    public void setDoubleValue(final double doubleValue) {
+        this.doubleValue = doubleValue;
+    }
+
+    @Override
+    public AxValidationResult validate(final AxValidationResult result) {
+        return key.validate(result);
+    }
+
+    @Override
+    public void clean() {
+        key.clean();
+    }
+
+    @Override
+    public String toString() {
+        return "ReferenceKeyTestEntity [key=" + key + ", doubleValue=" + doubleValue + "]";
+    }
+
+    @Override
+    public AxConcept copyTo(final AxConcept target) {
+        final Object copyObject = ((target == null) ? new ReferenceKeyTestEntity() : target);
+        if (copyObject instanceof ReferenceKeyTestEntity) {
+            final ReferenceKeyTestEntity copy = ((ReferenceKeyTestEntity) copyObject);
+            if (this.checkSetKey()) {
+                copy.setKey(new AxReferenceKey(key));
+            } else {
+                copy.key = null;
+            }
+            copy.doubleValue = doubleValue;
+            return copy;
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((key == null) ? 0 : key.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (obj == null)
+            return false;
+        if (this == obj)
+            return true;
+        if (getClass() != obj.getClass())
+            return false;
+        final ReferenceKeyTestEntity other = (ReferenceKeyTestEntity) obj;
+        if (key == null) {
+            if (other.key != null)
+                return false;
+        } else if (!key.equals(other.key))
+            return false;
+        if (doubleValue != other.doubleValue)
+            return false;
+        return true;
+    }
+
+    @Override
+    public int compareTo(final AxConcept otherObj) {
+        if (otherObj == null)
+            return -1;
+        if (this == otherObj)
+            return 0;
+        final ReferenceKeyTestEntity other = (ReferenceKeyTestEntity) otherObj;
+        if (key == null) {
+            if (other.key != null)
+                return 1;
+        } else if (!key.equals(other.key))
+            return key.compareTo(other.key);
+        if (doubleValue != other.doubleValue)
+            return new Double(doubleValue).compareTo(other.doubleValue);
+
+        return 0;
+    }
+}
diff --git a/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/resources/META-INF/persistence.xml b/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/resources/META-INF/persistence.xml
new file mode 100644
index 000000000..a40e0d9fe
--- /dev/null
+++ b/plugins/plugins-persistence/plugins-persistence-jpa/plugins-persistence-jpa-hibernate/src/test/resources/META-INF/persistence.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ============LICENSE_START=======================================================
+   Copyright (C) 2016-2018 Ericsson. 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=========================================================
+-->
+<!-- This is to configure H2-IMDB using Hibernate-->
+
+<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0">
+    <persistence-unit name="HiDAOtest" transaction-type="RESOURCE_LOCAL">
+        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
+
+        <class>org.onap.policy.apex.plugins.persistence.jpa.hibernate.ReferenceKeyTestEntity</class>
+        <class>org.onap.policy.apex.plugins.persistence.jpa.hibernate.ArtifactKeyTestEntity</class>
+
+        <properties>
+            <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
+            <property name="hibernate.connection.driver_class" value="org.h2.Driver" />
+            <property name="hibernate.connection.url" value="jdbc:h2:mem:test" />
+            <property name="hibernate.connection.user" value="sa" />
+            <property name="javax.persistence.jdbc.password" value="" />
+            <property name="hibernate.show_sql" value="true" />
+            <property name="hibernate.flushMode" value="FLUSH_AUTO" />
+            <property name="hibernate.temp.use_jdbc_metadata_defaults" value="false" />
+            <property name="hibernate.hbm2ddl.auto" value="create-drop" />
+        </properties>
+    </persistence-unit>
+
+</persistence>
\ No newline at end of file