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 concepts
44 * ({@link PfConcept}). It uses the default JPA implementation in the javax {@link Persistence} class.
46 public class DefaultPfDao implements PfDao {
47 private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPfDao.class);
50 private static final String NAME = "name";
51 private static final String VERSION = "version";
52 private static final String PARENT_NAME = "parentname";
53 private static final String PARENT_VERSION = "parentversion";
54 private static final String LOCAL_NAME = "localname";
56 private static final String TABLE_TOKEN = "__TABLE__";
58 private static final String DELETE_FROM_TABLE = "DELETE FROM __TABLE__ c";
60 private static final String SELECT_FROM_TABLE = "SELECT c FROM __TABLE__ c";
62 private static final String WHERE = " WHERE ";
63 private static final String AND = " AND ";
65 private static final String NAME_FILTER = "c.key.name = :name";
66 private static final String VERSION_FILTER = "c.key.version = :version";
67 private static final String PARENT_NAME_FILTER = "c.key.parentKeyName = :parentname";
68 private static final String PARENT_VERSION_FILTER = "c.key.parentKeyVersion = :parentversion";
69 private static final String LOCAL_NAME_FILTER = "c.key.localName = :localname";
71 private static final String DELETE_BY_CONCEPT_KEY =
72 DELETE_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
74 private static final String DELETE_BY_REFERENCE_KEY =
75 DELETE_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
77 private static final String SELECT_ALL_FOR_PARENT =
78 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER;
80 private static final String SELECT_ALL_VERSIONS = SELECT_FROM_TABLE + WHERE + NAME_FILTER;
82 private static final String SELECT_BY_CONCEPT_KEY =
83 SELECT_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
85 private static final String SELECT_BY_REFERENCE_KEY =
86 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
89 // Entity manager for JPA
90 private EntityManagerFactory emf = null;
93 public void init(final DaoParameters daoParameters) throws PfModelException {
94 if (daoParameters == null || daoParameters.getPersistenceUnit() == null) {
95 LOGGER.error("Policy Framework persistence unit parameter not set");
96 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR,
97 "Policy Framework persistence unit parameter not set");
100 LOGGER.debug("Creating Policy Framework persistence unit \"{}\" . . .", daoParameters.getPersistenceUnit());
102 emf = Persistence.createEntityManagerFactory(daoParameters.getPersistenceUnit(),
103 daoParameters.getJdbcProperties());
104 } catch (final Exception ex) {
105 String errorMessage = "Creation of Policy Framework persistence unit \""
106 + daoParameters.getPersistenceUnit() + "\" failed";
107 LOGGER.warn(errorMessage, ex);
108 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR, errorMessage, ex);
110 LOGGER.debug("Created Policy Framework persistence unit \"{}\"", daoParameters.getPersistenceUnit());
114 * Gets the entity manager for this DAO.
116 * @return the entity manager
118 protected final synchronized EntityManager getEntityManager() {
120 LOGGER.warn("Policy Framework DAO has not been initialized");
121 throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR,
122 "Policy Framework DAO has not been initialized");
125 return emf.createEntityManager();
129 public final void close() {
136 public <T extends PfConcept> void create(final T obj) {
140 final EntityManager mg = getEntityManager();
142 mg.getTransaction().begin();
144 mg.getTransaction().commit();
151 public <T extends PfConcept> void delete(final T obj) {
155 final EntityManager mg = getEntityManager();
157 mg.getTransaction().begin();
158 mg.remove(mg.contains(obj) ? obj : mg.merge(obj));
159 mg.getTransaction().commit();
166 public <T extends PfConcept> void delete(final Class<T> someClass, final PfConceptKey key) {
170 final EntityManager mg = getEntityManager();
173 mg.getTransaction().begin();
174 mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
175 .setParameter(NAME, key.getName())
176 .setParameter(VERSION, key.getVersion())
178 mg.getTransaction().commit();
186 public <T extends PfConcept> void delete(final Class<T> someClass, final PfReferenceKey key) {
190 final EntityManager mg = getEntityManager();
193 mg.getTransaction().begin();
194 mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
195 .setParameter(PARENT_NAME, key.getParentKeyName())
196 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
197 .setParameter(LOCAL_NAME, key.getLocalName())
199 mg.getTransaction().commit();
207 public <T extends PfConcept> void createCollection(final Collection<T> objs) {
208 if (objs == null || objs.isEmpty()) {
211 final EntityManager mg = getEntityManager();
213 mg.getTransaction().begin();
214 for (final T t : objs) {
217 mg.getTransaction().commit();
224 public <T extends PfConcept> void deleteCollection(final Collection<T> objs) {
225 if (objs == null || objs.isEmpty()) {
228 final EntityManager mg = getEntityManager();
230 mg.getTransaction().begin();
231 for (final T t : objs) {
232 mg.remove(mg.contains(t) ? t : mg.merge(t));
234 mg.getTransaction().commit();
241 public <T extends PfConcept> int deleteByConceptKey(final Class<T> someClass, final Collection<PfConceptKey> keys) {
242 if (keys == null || keys.isEmpty()) {
245 int deletedCount = 0;
246 final EntityManager mg = getEntityManager();
249 mg.getTransaction().begin();
250 for (final PfConceptKey key : keys) {
251 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
252 .setParameter(NAME, key.getName())
253 .setParameter(VERSION, key.getVersion())
256 mg.getTransaction().commit();
265 public <T extends PfConcept> int deleteByReferenceKey(final Class<T> someClass,
266 final Collection<PfReferenceKey> keys) {
267 if (keys == null || keys.isEmpty()) {
270 int deletedCount = 0;
271 final EntityManager mg = getEntityManager();
274 mg.getTransaction().begin();
275 for (final PfReferenceKey key : keys) {
276 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
277 .setParameter(PARENT_NAME, key.getParentKeyName())
278 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
279 .setParameter(LOCAL_NAME, key.getLocalName())
282 mg.getTransaction().commit();
291 public <T extends PfConcept> void deleteAll(final Class<T> someClass) {
292 final EntityManager mg = getEntityManager();
294 mg.getTransaction().begin();
295 mg.createQuery(setQueryTable(DELETE_FROM_TABLE, someClass), someClass).executeUpdate();
296 mg.getTransaction().commit();
303 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, final String name,
304 final String version) {
306 return getAll(someClass);
309 if (version == null) {
310 return getAllVersions(someClass, name);
313 T foundConcept = get(someClass, new PfConceptKey(name, version));
315 return (foundConcept == null ? Collections.emptyList() : Collections.singletonList(foundConcept));
319 public <T extends PfConcept> T get(final Class<T> someClass, final PfConceptKey key) {
320 if (someClass == null) {
323 final EntityManager mg = getEntityManager();
325 final T t = mg.find(someClass, key);
327 // This clone is created to force the JPA DAO to recurse down through the object
329 final T clonedT = someClass.newInstance();
332 } catch (final Exception e) {
333 LOGGER.warn("Could not clone object of class \"" + someClass.getCanonicalName() + "\"", 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 final T clonedT = someClass.newInstance();
357 } catch (final Exception e) {
358 LOGGER.warn("Could not clone object of class \"" + someClass.getCanonicalName() + "\"", e);
370 public <T extends PfConcept> List<T> getAll(final Class<T> someClass) {
371 if (someClass == null) {
372 return Collections.emptyList();
374 final EntityManager mg = getEntityManager();
376 return mg.createQuery(setQueryTable(SELECT_FROM_TABLE, someClass), someClass).getResultList();
383 public <T extends PfConcept> List<T> getAll(final Class<T> someClass, final PfConceptKey parentKey) {
384 if (someClass == null) {
385 return Collections.emptyList();
387 final EntityManager mg = getEntityManager();
390 return mg.createQuery(setQueryTable(SELECT_ALL_FOR_PARENT, someClass), someClass)
391 .setParameter(PARENT_NAME, parentKey.getName())
392 .setParameter(PARENT_VERSION, parentKey.getVersion())
401 public <T extends PfConcept> List<T> getAllVersions(final Class<T> someClass, final String conceptName) {
402 if (someClass == null || conceptName == null) {
403 return Collections.emptyList();
405 final EntityManager mg = getEntityManager();
408 return mg.createQuery(setQueryTable(SELECT_ALL_VERSIONS, someClass), someClass)
409 .setParameter(NAME, conceptName)
418 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfConceptKey key) {
419 if (someClass == null || key == null) {
422 final EntityManager mg = getEntityManager();
426 ret = mg.createQuery(setQueryTable(SELECT_BY_CONCEPT_KEY, someClass), someClass)
427 .setParameter(NAME, key.getName())
428 .setParameter(VERSION, key.getVersion())
435 return getSingleResult(someClass, key.getId(), ret);
439 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfReferenceKey key) {
440 if (someClass == null || key == null) {
443 final EntityManager mg = getEntityManager();
447 ret = mg.createQuery(setQueryTable(SELECT_BY_REFERENCE_KEY, someClass), someClass)
448 .setParameter(PARENT_NAME, key.getParentKeyName())
449 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
450 .setParameter(LOCAL_NAME, key.getLocalName())
457 return getSingleResult(someClass, key.getId(), ret);
461 public <T extends PfConcept> T update(final T obj) {
462 final EntityManager mg = getEntityManager();
465 mg.getTransaction().begin();
468 mg.getTransaction().commit();
476 public <T extends PfConcept> long size(final Class<T> someClass) {
477 if (someClass == null) {
480 final EntityManager mg = getEntityManager();
483 size = mg.createQuery("SELECT COUNT(c) FROM " + someClass.getSimpleName() + " c", Long.class)
492 * Add the table to a query string.
494 * @param queryString the query string
495 * @param tableClass the class name of the table
496 * @return the updated query string
498 private <T extends PfConcept> String setQueryTable(final String queryString, final Class<T> tableClass) {
499 return queryString.replaceAll(TABLE_TOKEN, tableClass.getSimpleName());
503 * Check that a query returned one and only one entry and return that entry.
505 * @param someClass the class being searched for
506 * @param conceptName the concept name being searched for
507 * @param resultList the result list returned by the query
508 * @return the single unique result
510 private <T extends PfConcept> T getSingleResult(final Class<T> someClass, final String searchFilter, List<T> ret) {
511 if (ret == null || ret.isEmpty()) {
514 if (ret.size() > 1) {
515 throw new IllegalArgumentException("More than one result was returned query on " + someClass
516 + " with filter " + searchFilter + ": " + ret);