2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019 Nordix Foundation.
4 * Modifications Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
5 * ================================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * SPDX-License-Identifier: Apache-2.0
19 * ============LICENSE_END=========================================================
22 package org.onap.policy.models.dao.impl;
24 import java.util.Collection;
25 import java.util.Collections;
26 import java.util.List;
28 import javax.persistence.EntityManager;
29 import javax.persistence.EntityManagerFactory;
30 import javax.persistence.Persistence;
31 import javax.ws.rs.core.Response;
33 import org.onap.policy.models.base.PfConcept;
34 import org.onap.policy.models.base.PfConceptKey;
35 import org.onap.policy.models.base.PfModelException;
36 import org.onap.policy.models.base.PfModelRuntimeException;
37 import org.onap.policy.models.base.PfReferenceKey;
38 import org.onap.policy.models.base.PfUtils;
39 import org.onap.policy.models.dao.DaoParameters;
40 import org.onap.policy.models.dao.PfDao;
41 import org.slf4j.Logger;
42 import org.slf4j.LoggerFactory;
45 * The Class DefaultPfDao is an JPA implementation of the {@link PfDao} class for Policy Framework concepts
46 * ({@link PfConcept}). It uses the default JPA implementation in the javax {@link Persistence} class.
48 public class DefaultPfDao implements PfDao {
49 private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPfDao.class);
52 private static final String NAME = "name";
53 private static final String VERSION = "version";
54 private static final String PARENT_NAME = "parentname";
55 private static final String PARENT_VERSION = "parentversion";
56 private static final String LOCAL_NAME = "localname";
58 private static final String TABLE_TOKEN = "__TABLE__";
60 private static final String DELETE_FROM_TABLE = "DELETE FROM __TABLE__ c";
62 private static final String SELECT_FROM_TABLE = "SELECT c FROM __TABLE__ c";
64 private static final String WHERE = " WHERE ";
65 private static final String AND = " AND ";
67 private static final String NAME_FILTER = "c.key.name = :name";
68 private static final String VERSION_FILTER = "c.key.version = :version";
69 private static final String PARENT_NAME_FILTER = "c.key.parentKeyName = :parentname";
70 private static final String PARENT_VERSION_FILTER = "c.key.parentKeyVersion = :parentversion";
71 private static final String LOCAL_NAME_FILTER = "c.key.localName = :localname";
73 private static final String DELETE_BY_CONCEPT_KEY =
74 DELETE_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
76 private static final String DELETE_BY_REFERENCE_KEY =
77 DELETE_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
79 private static final String SELECT_ALL_FOR_PARENT =
80 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER;
82 private static final String SELECT_ALL_VERSIONS = SELECT_FROM_TABLE + WHERE + NAME_FILTER;
84 private static final String SELECT_BY_CONCEPT_KEY =
85 SELECT_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
87 private static final String SELECT_BY_REFERENCE_KEY =
88 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
91 // Entity manager for JPA
92 private EntityManagerFactory emf = null;
95 public void init(final DaoParameters daoParameters) throws PfModelException {
96 if (daoParameters == null || daoParameters.getPersistenceUnit() == null) {
97 LOGGER.error("Policy Framework persistence unit parameter not set");
98 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR,
99 "Policy Framework persistence unit parameter not set");
102 LOGGER.debug("Creating Policy Framework persistence unit \"{}\" . . .", daoParameters.getPersistenceUnit());
104 emf = Persistence.createEntityManagerFactory(daoParameters.getPersistenceUnit(),
105 daoParameters.getJdbcProperties());
106 } catch (final Exception ex) {
107 String errorMessage = "Creation of Policy Framework persistence unit \""
108 + daoParameters.getPersistenceUnit() + "\" failed";
109 LOGGER.warn(errorMessage, ex);
110 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR, errorMessage, ex);
112 LOGGER.debug("Created Policy Framework persistence unit \"{}\"", daoParameters.getPersistenceUnit());
116 * Gets the entity manager for this DAO.
118 * @return the entity manager
120 protected final synchronized EntityManager getEntityManager() {
122 LOGGER.warn("Policy Framework DAO has not been initialized");
123 throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR,
124 "Policy Framework DAO has not been initialized");
127 return emf.createEntityManager();
131 public final void close() {
138 public <T extends PfConcept> void create(final T obj) {
142 final EntityManager mg = getEntityManager();
144 mg.getTransaction().begin();
146 mg.getTransaction().commit();
153 public <T extends PfConcept> void delete(final T obj) {
157 final EntityManager mg = getEntityManager();
159 mg.getTransaction().begin();
160 mg.remove(mg.contains(obj) ? obj : mg.merge(obj));
161 mg.getTransaction().commit();
168 public <T extends PfConcept> void delete(final Class<T> someClass, final PfConceptKey key) {
172 final EntityManager mg = getEntityManager();
175 mg.getTransaction().begin();
176 mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
177 .setParameter(NAME, key.getName())
178 .setParameter(VERSION, key.getVersion())
180 mg.getTransaction().commit();
188 public <T extends PfConcept> void delete(final Class<T> someClass, final PfReferenceKey key) {
192 final EntityManager mg = getEntityManager();
195 mg.getTransaction().begin();
196 mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
197 .setParameter(PARENT_NAME, key.getParentKeyName())
198 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
199 .setParameter(LOCAL_NAME, key.getLocalName())
201 mg.getTransaction().commit();
209 public <T extends PfConcept> void createCollection(final Collection<T> objs) {
210 if (objs == null || objs.isEmpty()) {
213 final EntityManager mg = getEntityManager();
215 mg.getTransaction().begin();
216 for (final T t : objs) {
219 mg.getTransaction().commit();
226 public <T extends PfConcept> void deleteCollection(final Collection<T> objs) {
227 if (objs == null || objs.isEmpty()) {
230 final EntityManager mg = getEntityManager();
232 mg.getTransaction().begin();
233 for (final T t : objs) {
234 mg.remove(mg.contains(t) ? t : mg.merge(t));
236 mg.getTransaction().commit();
243 public <T extends PfConcept> int deleteByConceptKey(final Class<T> someClass, final Collection<PfConceptKey> keys) {
244 if (keys == null || keys.isEmpty()) {
247 int deletedCount = 0;
248 final EntityManager mg = getEntityManager();
251 mg.getTransaction().begin();
252 for (final PfConceptKey key : keys) {
253 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
254 .setParameter(NAME, key.getName())
255 .setParameter(VERSION, key.getVersion())
258 mg.getTransaction().commit();
267 public <T extends PfConcept> int deleteByReferenceKey(final Class<T> someClass,
268 final Collection<PfReferenceKey> keys) {
269 if (keys == null || keys.isEmpty()) {
272 int deletedCount = 0;
273 final EntityManager mg = getEntityManager();
276 mg.getTransaction().begin();
277 for (final PfReferenceKey key : keys) {
278 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
279 .setParameter(PARENT_NAME, key.getParentKeyName())
280 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
281 .setParameter(LOCAL_NAME, key.getLocalName())
284 mg.getTransaction().commit();
293 public <T extends PfConcept> void deleteAll(final Class<T> someClass) {
294 final EntityManager mg = getEntityManager();
296 mg.getTransaction().begin();
297 mg.createQuery(setQueryTable(DELETE_FROM_TABLE, someClass), someClass).executeUpdate();
298 mg.getTransaction().commit();
305 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, final String name,
306 final String version) {
308 return getAll(someClass);
311 if (version == null) {
312 return getAllVersions(someClass, name);
315 T foundConcept = get(someClass, new PfConceptKey(name, version));
317 return (foundConcept == null ? Collections.emptyList() : Collections.singletonList(foundConcept));
321 public <T extends PfConcept> T get(final Class<T> someClass, final PfConceptKey key) {
322 if (someClass == null) {
325 final EntityManager mg = getEntityManager();
327 final T t = mg.find(someClass, key);
329 // This clone is created to force the JPA DAO to recurse down through the object
331 return PfUtils.makeCopy(t);
332 } catch (final Exception e) {
333 LOGGER.warn("Could not clone object of class \"" + someClass.getName() + "\"", e);
345 public <T extends PfConcept> T get(final Class<T> someClass, final PfReferenceKey key) {
346 if (someClass == null) {
349 final EntityManager mg = getEntityManager();
351 final T t = mg.find(someClass, key);
354 return PfUtils.makeCopy(t);
355 } catch (final Exception e) {
356 LOGGER.warn("Could not clone object of class \"" + someClass.getName() + "\"", e);
368 public <T extends PfConcept> List<T> getAll(final Class<T> someClass) {
369 if (someClass == null) {
370 return Collections.emptyList();
372 final EntityManager mg = getEntityManager();
374 return mg.createQuery(setQueryTable(SELECT_FROM_TABLE, someClass), someClass).getResultList();
381 public <T extends PfConcept> List<T> getAll(final Class<T> someClass, final PfConceptKey parentKey) {
382 if (someClass == null) {
383 return Collections.emptyList();
385 final EntityManager mg = getEntityManager();
388 return mg.createQuery(setQueryTable(SELECT_ALL_FOR_PARENT, someClass), someClass)
389 .setParameter(PARENT_NAME, parentKey.getName())
390 .setParameter(PARENT_VERSION, parentKey.getVersion())
399 public <T extends PfConcept> List<T> getAllVersions(final Class<T> someClass, final String conceptName) {
400 if (someClass == null || conceptName == null) {
401 return Collections.emptyList();
403 final EntityManager mg = getEntityManager();
406 return mg.createQuery(setQueryTable(SELECT_ALL_VERSIONS, someClass), someClass)
407 .setParameter(NAME, conceptName)
416 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfConceptKey key) {
417 if (someClass == null || key == null) {
420 final EntityManager mg = getEntityManager();
424 ret = mg.createQuery(setQueryTable(SELECT_BY_CONCEPT_KEY, someClass), someClass)
425 .setParameter(NAME, key.getName())
426 .setParameter(VERSION, key.getVersion())
433 return getSingleResult(someClass, key.getId(), ret);
437 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfReferenceKey key) {
438 if (someClass == null || key == null) {
441 final EntityManager mg = getEntityManager();
445 ret = mg.createQuery(setQueryTable(SELECT_BY_REFERENCE_KEY, someClass), someClass)
446 .setParameter(PARENT_NAME, key.getParentKeyName())
447 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
448 .setParameter(LOCAL_NAME, key.getLocalName())
455 return getSingleResult(someClass, key.getId(), ret);
459 public <T extends PfConcept> T update(final T obj) {
460 final EntityManager mg = getEntityManager();
463 mg.getTransaction().begin();
466 mg.getTransaction().commit();
474 public <T extends PfConcept> long size(final Class<T> someClass) {
475 if (someClass == null) {
478 final EntityManager mg = getEntityManager();
481 size = mg.createQuery("SELECT COUNT(c) FROM " + someClass.getSimpleName() + " c", Long.class)
490 * Add the table to a query string.
492 * @param queryString the query string
493 * @param tableClass the class name of the table
494 * @return the updated query string
496 private <T extends PfConcept> String setQueryTable(final String queryString, final Class<T> tableClass) {
497 return queryString.replaceAll(TABLE_TOKEN, tableClass.getSimpleName());
501 * Check that a query returned one and only one entry and return that entry.
503 * @param someClass the class being searched for
504 * @param conceptName the concept name being searched for
505 * @param resultList the result list returned by the query
506 * @return the single unique result
508 private <T extends PfConcept> T getSingleResult(final Class<T> someClass, final String searchFilter, List<T> ret) {
509 if (ret == null || ret.isEmpty()) {
512 if (ret.size() > 1) {
513 throw new IllegalArgumentException("More than one result was returned query on " + someClass
514 + " with filter " + searchFilter + ": " + ret);