2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019 Nordix Foundation.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.models.dao.impl;
23 import java.util.Collection;
24 import java.util.Collections;
25 import java.util.List;
27 import javax.persistence.EntityManager;
28 import javax.persistence.EntityManagerFactory;
29 import javax.persistence.Persistence;
30 import javax.ws.rs.core.Response;
32 import org.onap.policy.models.base.PfConcept;
33 import org.onap.policy.models.base.PfConceptKey;
34 import org.onap.policy.models.base.PfModelException;
35 import org.onap.policy.models.base.PfModelRuntimeException;
36 import org.onap.policy.models.base.PfReferenceKey;
37 import org.onap.policy.models.dao.DaoParameters;
38 import org.onap.policy.models.dao.PfDao;
39 import org.slf4j.Logger;
40 import org.slf4j.LoggerFactory;
43 * The Class DefaultPfDao is an JPA implementation of the {@link PfDao} class for Policy Framework
44 * concepts ({@link PfConcept}). It uses the default JPA implementation in the javax
45 * {@link Persistence} class.
47 public class DefaultPfDao implements PfDao {
48 private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPfDao.class);
50 private static final String SELECT_C_FROM = "SELECT c FROM ";
51 private static final String AND_C_KEY_LOCAL_NAME = "' AND c.key.localName='";
52 private static final String AND_C_KEY_PARENT_KEY_VERSION = "' AND c.key.parentKeyVersion='";
53 private static final String C_WHERE_C_KEY_PARENT_KEY_NAME = " c WHERE c.key.parentKeyName='";
54 private static final String AND_C_KEY_VERSION = "' AND c.key.version='";
55 private static final String C_WHERE_C_KEY_NAME = " c WHERE c.key.name='";
56 private static final String DELETE_FROM = "DELETE FROM ";
58 // Entity manager for JPA
59 private EntityManagerFactory emf = null;
62 public void init(final DaoParameters daoParameters) throws PfModelException {
63 if (daoParameters == null || daoParameters.getPersistenceUnit() == null) {
64 LOGGER.error("Policy Framework persistence unit parameter not set");
65 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR,
66 "Policy Framework persistence unit parameter not set");
69 LOGGER.debug("Creating Policy Framework persistence unit \"{}\" . . .", daoParameters.getPersistenceUnit());
71 emf = Persistence.createEntityManagerFactory(daoParameters.getPersistenceUnit(),
72 daoParameters.getJdbcProperties());
73 } catch (final Exception ex) {
74 String errorMessage = "Creation of Policy Framework persistence unit \""
75 + daoParameters.getPersistenceUnit() + "\" failed";
76 LOGGER.warn(errorMessage, ex);
77 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR, errorMessage, ex);
79 LOGGER.debug("Created Policy Framework persistence unit \"{}\"", daoParameters.getPersistenceUnit());
83 * Gets the entity manager for this DAO.
85 * @return the entity manager
87 protected final synchronized EntityManager getEntityManager() {
89 LOGGER.warn("Policy Framework DAO has not been initialized");
90 throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR,
91 "Policy Framework DAO has not been initialized");
94 return emf.createEntityManager();
98 public final void close() {
105 public <T extends PfConcept> void create(final T obj) {
109 final EntityManager mg = getEntityManager();
111 mg.getTransaction().begin();
113 mg.getTransaction().commit();
120 public <T extends PfConcept> void delete(final T obj) {
124 final EntityManager mg = getEntityManager();
126 mg.getTransaction().begin();
127 mg.remove(mg.contains(obj) ? obj : mg.merge(obj));
128 mg.getTransaction().commit();
135 public <T extends PfConcept> void delete(final Class<T> someClass, final PfConceptKey key) {
139 final EntityManager mg = getEntityManager();
141 mg.getTransaction().begin();
142 mg.createQuery(DELETE_FROM + someClass.getSimpleName() + C_WHERE_C_KEY_NAME + key.getName()
143 + AND_C_KEY_VERSION + key.getVersion() + "'", someClass).executeUpdate();
144 mg.getTransaction().commit();
151 public <T extends PfConcept> void delete(final Class<T> someClass, final PfReferenceKey key) {
155 final EntityManager mg = getEntityManager();
157 mg.getTransaction().begin();
158 mg.createQuery(DELETE_FROM + someClass.getSimpleName() + C_WHERE_C_KEY_PARENT_KEY_NAME
159 + key.getParentKeyName() + AND_C_KEY_PARENT_KEY_VERSION + key.getParentKeyVersion()
160 + AND_C_KEY_LOCAL_NAME + key.getLocalName() + "'", someClass).executeUpdate();
161 mg.getTransaction().commit();
168 public <T extends PfConcept> void createCollection(final Collection<T> objs) {
169 if (objs == null || objs.isEmpty()) {
172 final EntityManager mg = getEntityManager();
174 mg.getTransaction().begin();
175 for (final T t : objs) {
178 mg.getTransaction().commit();
185 public <T extends PfConcept> void deleteCollection(final Collection<T> objs) {
186 if (objs == null || objs.isEmpty()) {
189 final EntityManager mg = getEntityManager();
191 mg.getTransaction().begin();
192 for (final T t : objs) {
193 mg.remove(mg.contains(t) ? t : mg.merge(t));
195 mg.getTransaction().commit();
202 public <T extends PfConcept> int deleteByConceptKey(final Class<T> someClass, final Collection<PfConceptKey> keys) {
203 if (keys == null || keys.isEmpty()) {
206 int deletedCount = 0;
207 final EntityManager mg = getEntityManager();
209 mg.getTransaction().begin();
210 for (final PfConceptKey key : keys) {
211 deletedCount += mg.createQuery(DELETE_FROM + someClass.getSimpleName() + C_WHERE_C_KEY_NAME
212 + key.getName() + AND_C_KEY_VERSION + key.getVersion() + "'", someClass).executeUpdate();
214 mg.getTransaction().commit();
222 public <T extends PfConcept> int deleteByReferenceKey(final Class<T> someClass,
223 final Collection<PfReferenceKey> keys) {
224 if (keys == null || keys.isEmpty()) {
227 int deletedCount = 0;
228 final EntityManager mg = getEntityManager();
230 mg.getTransaction().begin();
231 for (final PfReferenceKey key : keys) {
234 DELETE_FROM + someClass.getSimpleName() + C_WHERE_C_KEY_PARENT_KEY_NAME
235 + key.getParentKeyName() + AND_C_KEY_PARENT_KEY_VERSION
236 + key.getParentKeyVersion() + AND_C_KEY_LOCAL_NAME + key.getLocalName() + "'",
237 someClass).executeUpdate();
239 mg.getTransaction().commit();
247 public <T extends PfConcept> void deleteAll(final Class<T> someClass) {
248 final EntityManager mg = getEntityManager();
250 mg.getTransaction().begin();
251 mg.createQuery(DELETE_FROM + someClass.getSimpleName() + " c ", someClass).executeUpdate();
252 mg.getTransaction().commit();
259 public <T extends PfConcept> T get(final Class<T> someClass, final PfConceptKey key) {
260 if (someClass == null) {
263 final EntityManager mg = getEntityManager();
265 final T t = mg.find(someClass, key);
267 // This clone is created to force the JPA DAO to recurse down through the object
269 final T clonedT = someClass.newInstance();
272 } catch (final Exception e) {
273 LOGGER.warn("Could not clone object of class \"" + someClass.getCanonicalName() + "\"", e);
285 public <T extends PfConcept> T get(final Class<T> someClass, final PfReferenceKey key) {
286 if (someClass == null) {
289 final EntityManager mg = getEntityManager();
291 final T t = mg.find(someClass, key);
294 final T clonedT = someClass.newInstance();
297 } catch (final Exception e) {
298 LOGGER.warn("Could not clone object of class \"" + someClass.getCanonicalName() + "\"", e);
310 public <T extends PfConcept> List<T> getAll(final Class<T> someClass) {
311 if (someClass == null) {
312 return Collections.emptyList();
314 final EntityManager mg = getEntityManager();
316 return mg.createQuery(SELECT_C_FROM + someClass.getSimpleName() + " c", someClass).getResultList();
323 public <T extends PfConcept> List<T> getAll(final Class<T> someClass, final PfConceptKey parentKey) {
324 if (someClass == null) {
325 return Collections.emptyList();
327 final EntityManager mg = getEntityManager();
331 SELECT_C_FROM + someClass.getSimpleName() + C_WHERE_C_KEY_PARENT_KEY_NAME
332 + parentKey.getName() + AND_C_KEY_PARENT_KEY_VERSION + parentKey.getVersion() + "'",
341 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfConceptKey key) {
342 if (someClass == null || key == null) {
345 final EntityManager mg = getEntityManager();
348 ret = mg.createQuery(SELECT_C_FROM + someClass.getSimpleName() + C_WHERE_C_KEY_NAME + key.getName()
349 + AND_C_KEY_VERSION + key.getVersion() + "'", someClass).getResultList();
353 if (ret == null || ret.isEmpty()) {
356 if (ret.size() > 1) {
357 throw new IllegalArgumentException("More than one result was returned for search for " + someClass
358 + " with key " + key.getId() + ": " + ret);
364 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfReferenceKey key) {
365 if (someClass == null || key == null) {
368 final EntityManager mg = getEntityManager();
371 ret = mg.createQuery(SELECT_C_FROM + someClass.getSimpleName() + C_WHERE_C_KEY_PARENT_KEY_NAME
372 + key.getParentKeyName() + AND_C_KEY_PARENT_KEY_VERSION + key.getParentKeyVersion()
373 + AND_C_KEY_LOCAL_NAME + key.getLocalName() + "'", someClass).getResultList();
377 if (ret == null || ret.isEmpty()) {
380 if (ret.size() > 1) {
381 throw new IllegalArgumentException("More than one result was returned for search for " + someClass
382 + " with key " + key.getId() + ": " + ret);
388 public <T extends PfConcept> T update(final T obj) {
389 final EntityManager mg = getEntityManager();
392 mg.getTransaction().begin();
395 mg.getTransaction().commit();
403 public <T extends PfConcept> long size(final Class<T> someClass) {
404 if (someClass == null) {
407 final EntityManager mg = getEntityManager();
410 size = mg.createQuery("SELECT COUNT(c) FROM " + someClass.getSimpleName() + " c", Long.class)