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.dao.DaoParameters;
39 import org.onap.policy.models.dao.PfDao;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
44 * The Class DefaultPfDao is an JPA implementation of the {@link PfDao} class for Policy Framework concepts
45 * ({@link PfConcept}). It uses the default JPA implementation in the javax {@link Persistence} class.
47 public class DefaultPfDao implements PfDao {
48 private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPfDao.class);
51 private static final String NAME = "name";
52 private static final String VERSION = "version";
53 private static final String PARENT_NAME = "parentname";
54 private static final String PARENT_VERSION = "parentversion";
55 private static final String LOCAL_NAME = "localname";
57 private static final String TABLE_TOKEN = "__TABLE__";
59 private static final String DELETE_FROM_TABLE = "DELETE FROM __TABLE__ c";
61 private static final String SELECT_FROM_TABLE = "SELECT c FROM __TABLE__ c";
63 private static final String WHERE = " WHERE ";
64 private static final String AND = " AND ";
66 private static final String NAME_FILTER = "c.key.name = :name";
67 private static final String VERSION_FILTER = "c.key.version = :version";
68 private static final String PARENT_NAME_FILTER = "c.key.parentKeyName = :parentname";
69 private static final String PARENT_VERSION_FILTER = "c.key.parentKeyVersion = :parentversion";
70 private static final String LOCAL_NAME_FILTER = "c.key.localName = :localname";
72 private static final String DELETE_BY_CONCEPT_KEY =
73 DELETE_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
75 private static final String DELETE_BY_REFERENCE_KEY =
76 DELETE_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
78 private static final String SELECT_ALL_FOR_PARENT =
79 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER;
81 private static final String SELECT_ALL_VERSIONS = SELECT_FROM_TABLE + WHERE + NAME_FILTER;
83 private static final String SELECT_BY_CONCEPT_KEY =
84 SELECT_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
86 private static final String SELECT_BY_REFERENCE_KEY =
87 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
90 // Entity manager for JPA
91 private EntityManagerFactory emf = null;
94 public void init(final DaoParameters daoParameters) throws PfModelException {
95 if (daoParameters == null || daoParameters.getPersistenceUnit() == null) {
96 LOGGER.error("Policy Framework persistence unit parameter not set");
97 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR,
98 "Policy Framework persistence unit parameter not set");
101 LOGGER.debug("Creating Policy Framework persistence unit \"{}\" . . .", daoParameters.getPersistenceUnit());
103 emf = Persistence.createEntityManagerFactory(daoParameters.getPersistenceUnit(),
104 daoParameters.getJdbcProperties());
105 } catch (final Exception ex) {
106 String errorMessage = "Creation of Policy Framework persistence unit \""
107 + daoParameters.getPersistenceUnit() + "\" failed";
108 LOGGER.warn(errorMessage, ex);
109 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR, errorMessage, ex);
111 LOGGER.debug("Created Policy Framework persistence unit \"{}\"", daoParameters.getPersistenceUnit());
115 * Gets the entity manager for this DAO.
117 * @return the entity manager
119 protected final synchronized EntityManager getEntityManager() {
121 LOGGER.warn("Policy Framework DAO has not been initialized");
122 throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR,
123 "Policy Framework DAO has not been initialized");
126 return emf.createEntityManager();
130 public final void close() {
137 public <T extends PfConcept> void create(final T obj) {
141 final EntityManager mg = getEntityManager();
143 mg.getTransaction().begin();
145 mg.getTransaction().commit();
152 public <T extends PfConcept> void delete(final T obj) {
156 final EntityManager mg = getEntityManager();
158 mg.getTransaction().begin();
159 mg.remove(mg.contains(obj) ? obj : mg.merge(obj));
160 mg.getTransaction().commit();
167 public <T extends PfConcept> void delete(final Class<T> someClass, final PfConceptKey key) {
171 final EntityManager mg = getEntityManager();
174 mg.getTransaction().begin();
175 mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
176 .setParameter(NAME, key.getName())
177 .setParameter(VERSION, key.getVersion())
179 mg.getTransaction().commit();
187 public <T extends PfConcept> void delete(final Class<T> someClass, final PfReferenceKey key) {
191 final EntityManager mg = getEntityManager();
194 mg.getTransaction().begin();
195 mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
196 .setParameter(PARENT_NAME, key.getParentKeyName())
197 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
198 .setParameter(LOCAL_NAME, key.getLocalName())
200 mg.getTransaction().commit();
208 public <T extends PfConcept> void createCollection(final Collection<T> objs) {
209 if (objs == null || objs.isEmpty()) {
212 final EntityManager mg = getEntityManager();
214 mg.getTransaction().begin();
215 for (final T t : objs) {
218 mg.getTransaction().commit();
225 public <T extends PfConcept> void deleteCollection(final Collection<T> objs) {
226 if (objs == null || objs.isEmpty()) {
229 final EntityManager mg = getEntityManager();
231 mg.getTransaction().begin();
232 for (final T t : objs) {
233 mg.remove(mg.contains(t) ? t : mg.merge(t));
235 mg.getTransaction().commit();
242 public <T extends PfConcept> int deleteByConceptKey(final Class<T> someClass, final Collection<PfConceptKey> keys) {
243 if (keys == null || keys.isEmpty()) {
246 int deletedCount = 0;
247 final EntityManager mg = getEntityManager();
250 mg.getTransaction().begin();
251 for (final PfConceptKey key : keys) {
252 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
253 .setParameter(NAME, key.getName())
254 .setParameter(VERSION, key.getVersion())
257 mg.getTransaction().commit();
266 public <T extends PfConcept> int deleteByReferenceKey(final Class<T> someClass,
267 final Collection<PfReferenceKey> keys) {
268 if (keys == null || keys.isEmpty()) {
271 int deletedCount = 0;
272 final EntityManager mg = getEntityManager();
275 mg.getTransaction().begin();
276 for (final PfReferenceKey key : keys) {
277 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
278 .setParameter(PARENT_NAME, key.getParentKeyName())
279 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
280 .setParameter(LOCAL_NAME, key.getLocalName())
283 mg.getTransaction().commit();
292 public <T extends PfConcept> void deleteAll(final Class<T> someClass) {
293 final EntityManager mg = getEntityManager();
295 mg.getTransaction().begin();
296 mg.createQuery(setQueryTable(DELETE_FROM_TABLE, someClass), someClass).executeUpdate();
297 mg.getTransaction().commit();
304 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, final String name,
305 final String version) {
307 return getAll(someClass);
310 if (version == null) {
311 return getAllVersions(someClass, name);
314 T foundConcept = get(someClass, new PfConceptKey(name, version));
316 return (foundConcept == null ? Collections.emptyList() : Collections.singletonList(foundConcept));
320 public <T extends PfConcept> T get(final Class<T> someClass, final PfConceptKey key) {
321 if (someClass == null) {
324 final EntityManager mg = getEntityManager();
326 final T t = mg.find(someClass, key);
328 // This clone is created to force the JPA DAO to recurse down through the object
330 final T clonedT = someClass.newInstance();
333 } catch (final Exception e) {
334 LOGGER.warn("Could not clone object of class \"" + someClass.getName() + "\"", e);
346 public <T extends PfConcept> T get(final Class<T> someClass, final PfReferenceKey key) {
347 if (someClass == null) {
350 final EntityManager mg = getEntityManager();
352 final T t = mg.find(someClass, key);
355 final T clonedT = someClass.newInstance();
358 } catch (final Exception e) {
359 LOGGER.warn("Could not clone object of class \"" + someClass.getName() + "\"", e);
371 public <T extends PfConcept> List<T> getAll(final Class<T> someClass) {
372 if (someClass == null) {
373 return Collections.emptyList();
375 final EntityManager mg = getEntityManager();
377 return mg.createQuery(setQueryTable(SELECT_FROM_TABLE, someClass), someClass).getResultList();
384 public <T extends PfConcept> List<T> getAll(final Class<T> someClass, final PfConceptKey parentKey) {
385 if (someClass == null) {
386 return Collections.emptyList();
388 final EntityManager mg = getEntityManager();
391 return mg.createQuery(setQueryTable(SELECT_ALL_FOR_PARENT, someClass), someClass)
392 .setParameter(PARENT_NAME, parentKey.getName())
393 .setParameter(PARENT_VERSION, parentKey.getVersion())
402 public <T extends PfConcept> List<T> getAllVersions(final Class<T> someClass, final String conceptName) {
403 if (someClass == null || conceptName == null) {
404 return Collections.emptyList();
406 final EntityManager mg = getEntityManager();
409 return mg.createQuery(setQueryTable(SELECT_ALL_VERSIONS, someClass), someClass)
410 .setParameter(NAME, conceptName)
419 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfConceptKey key) {
420 if (someClass == null || key == null) {
423 final EntityManager mg = getEntityManager();
427 ret = mg.createQuery(setQueryTable(SELECT_BY_CONCEPT_KEY, someClass), someClass)
428 .setParameter(NAME, key.getName())
429 .setParameter(VERSION, key.getVersion())
436 return getSingleResult(someClass, key.getId(), ret);
440 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfReferenceKey key) {
441 if (someClass == null || key == null) {
444 final EntityManager mg = getEntityManager();
448 ret = mg.createQuery(setQueryTable(SELECT_BY_REFERENCE_KEY, someClass), someClass)
449 .setParameter(PARENT_NAME, key.getParentKeyName())
450 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
451 .setParameter(LOCAL_NAME, key.getLocalName())
458 return getSingleResult(someClass, key.getId(), ret);
462 public <T extends PfConcept> T update(final T obj) {
463 final EntityManager mg = getEntityManager();
466 mg.getTransaction().begin();
469 mg.getTransaction().commit();
477 public <T extends PfConcept> long size(final Class<T> someClass) {
478 if (someClass == null) {
481 final EntityManager mg = getEntityManager();
484 size = mg.createQuery("SELECT COUNT(c) FROM " + someClass.getSimpleName() + " c", Long.class)
493 * Add the table to a query string.
495 * @param queryString the query string
496 * @param tableClass the class name of the table
497 * @return the updated query string
499 private <T extends PfConcept> String setQueryTable(final String queryString, final Class<T> tableClass) {
500 return queryString.replaceAll(TABLE_TOKEN, tableClass.getSimpleName());
504 * Check that a query returned one and only one entry and return that entry.
506 * @param someClass the class being searched for
507 * @param conceptName the concept name being searched for
508 * @param resultList the result list returned by the query
509 * @return the single unique result
511 private <T extends PfConcept> T getSingleResult(final Class<T> someClass, final String searchFilter, List<T> ret) {
512 if (ret == null || ret.isEmpty()) {
515 if (ret.size() > 1) {
516 throw new IllegalArgumentException("More than one result was returned query on " + someClass
517 + " with filter " + searchFilter + ": " + ret);