2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019-2021, 2023 Nordix Foundation.
4 * Modifications Copyright (C) 2019-2021 AT&T Intellectual Property. All rights reserved.
5 * Modifications Copyright (C) 2022 Bell Canada. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 * SPDX-License-Identifier: Apache-2.0
20 * ============LICENSE_END=========================================================
23 package org.onap.policy.models.dao.impl;
25 import jakarta.persistence.EntityManager;
26 import jakarta.persistence.EntityManagerFactory;
27 import jakarta.persistence.Persistence;
28 import jakarta.persistence.TypedQuery;
29 import jakarta.ws.rs.core.Response;
30 import java.util.Collection;
31 import java.util.Collections;
32 import java.util.List;
33 import org.apache.commons.lang3.StringUtils;
34 import org.onap.policy.models.base.PfConcept;
35 import org.onap.policy.models.base.PfConceptKey;
36 import org.onap.policy.models.base.PfModelException;
37 import org.onap.policy.models.base.PfModelRuntimeException;
38 import org.onap.policy.models.base.PfReferenceKey;
39 import org.onap.policy.models.base.PfReferenceTimestampKey;
40 import org.onap.policy.models.base.PfTimestampKey;
41 import org.onap.policy.models.base.PfUtils;
42 import org.onap.policy.models.dao.DaoParameters;
43 import org.onap.policy.models.dao.PfDao;
44 import org.onap.policy.models.dao.PfFilter;
45 import org.onap.policy.models.dao.PfFilterFactory;
46 import org.onap.policy.models.dao.PfFilterParametersIntfc;
47 import org.slf4j.Logger;
48 import org.slf4j.LoggerFactory;
51 * The Class DefaultPfDao is an JPA implementation of the {@link PfDao} class for Policy Framework concepts
52 * ({@link PfConcept}). It uses the default JPA implementation in the jakarta {@link Persistence} class.
54 public class DefaultPfDao implements PfDao {
55 private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPfDao.class);
58 private static final String NAME = "name";
59 private static final String VERSION = "version";
60 private static final String TIMESTAMP = "timeStamp";
61 private static final String PARENT_NAME = "parentname";
62 private static final String PARENT_VERSION = "parentversion";
63 private static final String LOCAL_NAME = "localname";
65 private static final String TABLE_TOKEN = "__TABLE__";
67 private static final String DELETE_FROM_TABLE = "DELETE FROM __TABLE__ c";
69 private static final String SELECT_FROM_TABLE = "SELECT c FROM __TABLE__ c";
71 private static final String WHERE = " WHERE ";
72 private static final String AND = " AND ";
73 private static final String ORDER_BY = " ORDER BY c.";
75 private static final String NAME_FILTER = "c.key.name = :name";
76 private static final String VERSION_FILTER = "c.key.version = :version";
77 private static final String TIMESTAMP_FILTER = "c.key.timeStamp = :timeStamp";
78 private static final String PARENT_NAME_FILTER = "c.key.parentKeyName = :parentname";
79 private static final String PARENT_VERSION_FILTER = "c.key.parentKeyVersion = :parentversion";
80 private static final String LOCAL_NAME_FILTER = "c.key.localName = :localname";
82 private static final String CLONE_ERR_MSG = "Could not clone object of class \"{}\"";
84 private static final String DELETE_BY_CONCEPT_KEY =
85 DELETE_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
87 private static final String DELETE_BY_TIMESTAMP_KEY =
88 DELETE_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER + AND + TIMESTAMP_FILTER;
90 private static final String DELETE_BY_REFERENCE_KEY =
91 DELETE_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
93 private static final String SELECT_ALL_FOR_PARENT =
94 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER;
96 private static final String SELECT_ALL_VERSIONS_FOR_PARENT =
97 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER;
99 private static final String SELECT_ALL_VERSIONS = SELECT_FROM_TABLE + WHERE + NAME_FILTER;
101 private static final String SELECT_BY_CONCEPT_KEY =
102 SELECT_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
104 private static final String SELECT_BY_REFERENCE_KEY =
105 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
108 // Entity manager for JPA
109 private EntityManagerFactory emf = null;
112 public void init(final DaoParameters daoParameters) throws PfModelException {
113 if (daoParameters == null || daoParameters.getPersistenceUnit() == null) {
114 LOGGER.error("Policy Framework persistence unit parameter not set");
115 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR,
116 "Policy Framework persistence unit parameter not set");
119 LOGGER.debug("Creating Policy Framework persistence unit \"{}\" . . .", daoParameters.getPersistenceUnit());
121 emf = Persistence.createEntityManagerFactory(daoParameters.getPersistenceUnit(),
122 daoParameters.getJdbcProperties());
123 } catch (final Exception ex) {
124 String errorMessage = "Creation of Policy Framework persistence unit \""
125 + daoParameters.getPersistenceUnit() + "\" failed";
126 LOGGER.warn(errorMessage);
127 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR, errorMessage, ex);
129 LOGGER.debug("Created Policy Framework persistence unit \"{}\"", daoParameters.getPersistenceUnit());
133 * Gets the entity manager for this DAO.
135 * @return the entity manager
137 protected final synchronized EntityManager getEntityManager() {
139 LOGGER.warn("Policy Framework DAO has not been initialized");
140 throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR,
141 "Policy Framework DAO has not been initialized");
144 return emf.createEntityManager();
148 public final void close() {
155 public <T extends PfConcept> void create(final T obj) {
159 try (var mg = getEntityManager()) {
160 mg.getTransaction().begin();
162 mg.getTransaction().commit();
167 public <T extends PfConcept> void delete(final T obj) {
171 try (var mg = getEntityManager()) {
172 mg.getTransaction().begin();
173 mg.remove(mg.contains(obj) ? obj : mg.merge(obj));
174 mg.getTransaction().commit();
179 public <T extends PfConcept> void delete(final Class<T> someClass, final PfConceptKey key) {
183 try (var mg = getEntityManager()) {
185 mg.getTransaction().begin();
186 mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass))
187 .setParameter(NAME, key.getName())
188 .setParameter(VERSION, key.getVersion())
190 mg.getTransaction().commit();
196 public <T extends PfConcept> void delete(final Class<T> someClass, final PfReferenceKey key) {
200 try (var mg = getEntityManager()) {
202 mg.getTransaction().begin();
203 mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass))
204 .setParameter(PARENT_NAME, key.getParentKeyName())
205 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
206 .setParameter(LOCAL_NAME, key.getLocalName())
208 mg.getTransaction().commit();
214 public <T extends PfConcept> void delete(final Class<T> someClass, final PfTimestampKey key) {
218 try (var mg = getEntityManager()) {
220 mg.getTransaction().begin();
221 mg.createQuery(setQueryTable(DELETE_BY_TIMESTAMP_KEY, someClass))
222 .setParameter(NAME, key.getName())
223 .setParameter(VERSION, key.getVersion())
224 .setParameter(TIMESTAMP, key.getTimeStamp())
226 mg.getTransaction().commit();
232 public <T extends PfConcept> void createCollection(final Collection<T> objs) {
233 if (objs == null || objs.isEmpty()) {
236 try (var mg = getEntityManager()) {
237 mg.getTransaction().begin();
238 for (final T t : objs) {
241 mg.getTransaction().commit();
246 public <T extends PfConcept> void deleteCollection(final Collection<T> objs) {
247 if (objs == null || objs.isEmpty()) {
250 try (var mg = getEntityManager()) {
251 mg.getTransaction().begin();
252 for (final T t : objs) {
253 mg.remove(mg.contains(t) ? t : mg.merge(t));
255 mg.getTransaction().commit();
260 public <T extends PfConcept> int deleteByConceptKey(final Class<T> someClass, final Collection<PfConceptKey> keys) {
261 if (keys == null || keys.isEmpty()) {
264 var deletedCount = 0;
265 try (var mg = getEntityManager()) {
267 mg.getTransaction().begin();
268 for (final PfConceptKey key : keys) {
269 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass))
270 .setParameter(NAME, key.getName())
271 .setParameter(VERSION, key.getVersion())
274 mg.getTransaction().commit();
281 public <T extends PfConcept> int deleteByReferenceKey(final Class<T> someClass,
282 final Collection<PfReferenceKey> keys) {
283 if (keys == null || keys.isEmpty()) {
286 var deletedCount = 0;
287 try (var mg = getEntityManager()) {
289 mg.getTransaction().begin();
290 for (final PfReferenceKey key : keys) {
291 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass))
292 .setParameter(PARENT_NAME, key.getParentKeyName())
293 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
294 .setParameter(LOCAL_NAME, key.getLocalName())
297 mg.getTransaction().commit();
304 public <T extends PfConcept> void deleteAll(final Class<T> someClass) {
305 try (var mg = getEntityManager()) {
306 mg.getTransaction().begin();
307 mg.createQuery(setQueryTable(DELETE_FROM_TABLE, someClass)).executeUpdate();
308 mg.getTransaction().commit();
313 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, final String name,
314 final String version) {
316 return getAll(someClass);
319 if (version == null) {
320 return getAllVersions(someClass, name);
323 var foundConcept = get(someClass, new PfConceptKey(name, version));
325 return (foundConcept == null ? Collections.emptyList() : Collections.singletonList(foundConcept));
329 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, PfFilterParametersIntfc filterParams) {
331 try (var mg = getEntityManager()) {
332 PfFilter filter = new PfFilterFactory().createFilter(someClass);
333 var filterQueryString = SELECT_FROM_TABLE
334 + filter.genWhereClause(filterParams)
335 + filter.genOrderClause(filterParams);
337 TypedQuery<T> query = mg.createQuery(setQueryTable(filterQueryString, someClass), someClass);
338 filter.setParams(query, filterParams);
340 LOGGER.debug("filterQueryString is \"{}\"", filterQueryString);
341 return query.getResultList();
346 public <T extends PfConcept> T get(final Class<T> someClass, final PfConceptKey key) {
347 return genericGet(someClass, key);
351 public <T extends PfConcept> T get(final Class<T> someClass, final PfReferenceKey key) {
352 return genericGet(someClass, key);
356 public <T extends PfConcept> T get(final Class<T> someClass, final PfTimestampKey key) {
357 return genericGet(someClass, key);
361 public <T extends PfConcept> T get(final Class<T> someClass, final PfReferenceTimestampKey key) {
362 return genericGet(someClass, key);
365 private <T extends PfConcept> T genericGet(final Class<T> someClass, final Object key) {
366 if (someClass == null) {
369 try (var mg = getEntityManager()) {
370 final var t = mg.find(someClass, key);
374 return checkAndReturn(someClass, t);
379 public <T extends PfConcept> List<T> getAll(final Class<T> someClass) {
380 if (someClass == null) {
381 return Collections.emptyList();
383 try (var mg = getEntityManager()) {
384 return mg.createQuery(setQueryTable(SELECT_FROM_TABLE, someClass), someClass).getResultList();
389 public <T extends PfConcept> List<T> getAll(final Class<T> someClass, final PfConceptKey parentKey) {
390 if (someClass == null) {
391 return Collections.emptyList();
393 try (var mg = getEntityManager()) {
395 return mg.createQuery(setQueryTable(SELECT_ALL_FOR_PARENT, someClass), someClass)
396 .setParameter(PARENT_NAME, parentKey.getName())
397 .setParameter(PARENT_VERSION, parentKey.getVersion())
404 public <T extends PfConcept> List<T> getAll(Class<T> someClass, String orderBy, Integer numRecords) {
406 if (someClass == null) {
407 return Collections.emptyList();
409 try (var mg = getEntityManager()) {
410 String query = setQueryTable(SELECT_FROM_TABLE, someClass);
412 if (StringUtils.isNotBlank(orderBy)) {
413 query = query.concat(ORDER_BY).concat(orderBy);
416 return mg.createQuery(query, someClass).setMaxResults(numRecords)
422 public <T extends PfConcept> List<T> getAllVersionsByParent(final Class<T> someClass, final String parentKeyName) {
423 if (someClass == null || parentKeyName == null) {
424 return Collections.emptyList();
426 try (var mg = getEntityManager()) {
428 return mg.createQuery(setQueryTable(SELECT_ALL_VERSIONS_FOR_PARENT, someClass), someClass)
429 .setParameter(PARENT_NAME, parentKeyName)
436 public <T extends PfConcept> List<T> getAllVersions(final Class<T> someClass, final String conceptName) {
437 if (someClass == null || conceptName == null) {
438 return Collections.emptyList();
440 try (var mg = getEntityManager()) {
442 return mg.createQuery(setQueryTable(SELECT_ALL_VERSIONS, someClass), someClass)
443 .setParameter(NAME, conceptName)
450 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfConceptKey key) {
451 if (someClass == null || key == null) {
455 try (var mg = getEntityManager()) {
457 ret = mg.createQuery(setQueryTable(SELECT_BY_CONCEPT_KEY, someClass), someClass)
458 .setParameter(NAME, key.getName())
459 .setParameter(VERSION, key.getVersion())
464 return getSingleResult(someClass, key.getId(), ret);
468 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfReferenceKey key) {
469 if (someClass == null || key == null) {
473 try (var mg = getEntityManager()) {
475 ret = mg.createQuery(setQueryTable(SELECT_BY_REFERENCE_KEY, someClass), someClass)
476 .setParameter(PARENT_NAME, key.getParentKeyName())
477 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
478 .setParameter(LOCAL_NAME, key.getLocalName())
483 return getSingleResult(someClass, key.getId(), ret);
487 public <T extends PfConcept> T update(final T obj) {
489 try (var mg = getEntityManager()) {
490 mg.getTransaction().begin();
493 mg.getTransaction().commit();
499 public <T extends PfConcept> long size(final Class<T> someClass) {
500 if (someClass == null) {
504 try (var mg = getEntityManager()) {
506 * The invoking code only passes well-known classes into this method, thus
507 * disabling the sonar about SQL injection.
509 size = mg.createQuery("SELECT COUNT(c) FROM " + someClass.getSimpleName() + " c", Long.class) // NOSONAR
516 * Add the table to a query string.
518 * @param queryString the query string
519 * @param tableClass the class name of the table
520 * @return the updated query string
522 private <T extends PfConcept> String setQueryTable(final String queryString, final Class<T> tableClass) {
523 return queryString.replace(TABLE_TOKEN, tableClass.getSimpleName());
527 * Check that a query returned one and only one entry and return that entry.
529 * @param someClass the class being searched for
530 * @param searchFilter the search filter
531 * @param resultList the result list returned by the query
532 * @return the single unique result
534 private <T extends PfConcept> T getSingleResult(final Class<T> someClass, final String searchFilter,
535 List<T> resultList) {
536 if (resultList == null || resultList.isEmpty()) {
539 if (resultList.size() > 1) {
540 throw new IllegalArgumentException("More than one result was returned query on " + someClass
541 + " with filter " + searchFilter + ": " + resultList);
543 return resultList.get(0);
547 * check the result get from database and return the object.
549 * @param <T> the type of the object to get, a subclass of {@link PfConcept}
550 * @param someClass the class of the object to get, a subclass of {@link PfConcept}
551 * @param objToCheck the object that was retrieved from the database
552 * @return the checked object or null
554 private <T extends PfConcept> T checkAndReturn(final Class<T> someClass, final T objToCheck) {
555 if (objToCheck != null) {
557 return PfUtils.makeCopy(objToCheck);
558 } catch (final Exception e) {
559 LOGGER.warn(CLONE_ERR_MSG, someClass.getName(), e);