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.Date;
27 import java.util.List;
29 import javax.persistence.EntityManager;
30 import javax.persistence.EntityManagerFactory;
31 import javax.persistence.Persistence;
32 import javax.persistence.TypedQuery;
33 import javax.ws.rs.core.Response;
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.PfTimestampKey;
40 import org.onap.policy.models.base.PfUtils;
41 import org.onap.policy.models.dao.DaoParameters;
42 import org.onap.policy.models.dao.PfDao;
43 import org.slf4j.Logger;
44 import org.slf4j.LoggerFactory;
47 * The Class DefaultPfDao is an JPA implementation of the {@link PfDao} class for Policy Framework concepts
48 * ({@link PfConcept}). It uses the default JPA implementation in the javax {@link Persistence} class.
50 public class DefaultPfDao implements PfDao {
51 private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPfDao.class);
54 private static final String NAME = "name";
55 private static final String VERSION = "version";
56 private static final String TIMESTAMP = "timeStamp";
57 private static final String PARENT_NAME = "parentname";
58 private static final String PARENT_VERSION = "parentversion";
59 private static final String LOCAL_NAME = "localname";
61 private static final String TABLE_TOKEN = "__TABLE__";
63 private static final String DELETE_FROM_TABLE = "DELETE FROM __TABLE__ c";
65 private static final String SELECT_FROM_TABLE = "SELECT c FROM __TABLE__ c";
67 private static final String WHERE = " WHERE ";
68 private static final String AND = " AND ";
70 private static final String NAME_FILTER = "c.key.name = :name";
71 private static final String VERSION_FILTER = "c.key.version = :version";
72 private static final String TIMESTAMP_START_FILTER = "c.key.timeStamp >= :startTime";
73 private static final String TIMESTAMP_END_FILTER = "c.key.timeStamp <= :endTime";
74 private static final String PARENT_NAME_FILTER = "c.key.parentKeyName = :parentname";
75 private static final String PARENT_VERSION_FILTER = "c.key.parentKeyVersion = :parentversion";
76 private static final String LOCAL_NAME_FILTER = "c.key.localName = :localname";
78 private static final String CLONE_ERR_MSG = "Could not clone object of class \"{}\"";
80 private static final String DELETE_BY_CONCEPT_KEY =
81 DELETE_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
83 private static final String DELETE_BY_REFERENCE_KEY =
84 DELETE_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
86 private static final String SELECT_ALL_FOR_PARENT =
87 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER;
89 private static final String SELECT_ALL_VERSIONS = SELECT_FROM_TABLE + WHERE + NAME_FILTER;
91 private static final String SELECT_BY_CONCEPT_KEY =
92 SELECT_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
94 private static final String SELECT_BY_REFERENCE_KEY =
95 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
98 // Entity manager for JPA
99 private EntityManagerFactory emf = null;
102 public void init(final DaoParameters daoParameters) throws PfModelException {
103 if (daoParameters == null || daoParameters.getPersistenceUnit() == null) {
104 LOGGER.error("Policy Framework persistence unit parameter not set");
105 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR,
106 "Policy Framework persistence unit parameter not set");
109 LOGGER.debug("Creating Policy Framework persistence unit \"{}\" . . .", daoParameters.getPersistenceUnit());
111 emf = Persistence.createEntityManagerFactory(daoParameters.getPersistenceUnit(),
112 daoParameters.getJdbcProperties());
113 } catch (final Exception ex) {
114 String errorMessage = "Creation of Policy Framework persistence unit \""
115 + daoParameters.getPersistenceUnit() + "\" failed";
116 LOGGER.warn(errorMessage, ex);
117 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR, errorMessage, ex);
119 LOGGER.debug("Created Policy Framework persistence unit \"{}\"", daoParameters.getPersistenceUnit());
123 * Gets the entity manager for this DAO.
125 * @return the entity manager
127 protected final synchronized EntityManager getEntityManager() {
129 LOGGER.warn("Policy Framework DAO has not been initialized");
130 throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR,
131 "Policy Framework DAO has not been initialized");
134 return emf.createEntityManager();
138 public final void close() {
145 public <T extends PfConcept> void create(final T obj) {
149 final EntityManager mg = getEntityManager();
151 mg.getTransaction().begin();
153 mg.getTransaction().commit();
160 public <T extends PfConcept> void delete(final T obj) {
164 final EntityManager mg = getEntityManager();
166 mg.getTransaction().begin();
167 mg.remove(mg.contains(obj) ? obj : mg.merge(obj));
168 mg.getTransaction().commit();
175 public <T extends PfConcept> void delete(final Class<T> someClass, final PfConceptKey key) {
179 final EntityManager mg = getEntityManager();
182 mg.getTransaction().begin();
183 mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
184 .setParameter(NAME, key.getName())
185 .setParameter(VERSION, key.getVersion())
187 mg.getTransaction().commit();
195 public <T extends PfConcept> void delete(final Class<T> someClass, final PfReferenceKey key) {
199 final EntityManager mg = getEntityManager();
202 mg.getTransaction().begin();
203 mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
204 .setParameter(PARENT_NAME, key.getParentKeyName())
205 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
206 .setParameter(LOCAL_NAME, key.getLocalName())
208 mg.getTransaction().commit();
216 public <T extends PfConcept> void delete(final Class<T> someClass, final PfTimestampKey key) {
220 final EntityManager mg = getEntityManager();
223 mg.getTransaction().begin();
224 mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
225 .setParameter(NAME, key.getName())
226 .setParameter(VERSION, key.getVersion())
227 .setParameter(TIMESTAMP, key.getTimeStamp())
229 mg.getTransaction().commit();
237 public <T extends PfConcept> void createCollection(final Collection<T> objs) {
238 if (objs == null || objs.isEmpty()) {
241 final EntityManager mg = getEntityManager();
243 mg.getTransaction().begin();
244 for (final T t : objs) {
247 mg.getTransaction().commit();
254 public <T extends PfConcept> void deleteCollection(final Collection<T> objs) {
255 if (objs == null || objs.isEmpty()) {
258 final EntityManager mg = getEntityManager();
260 mg.getTransaction().begin();
261 for (final T t : objs) {
262 mg.remove(mg.contains(t) ? t : mg.merge(t));
264 mg.getTransaction().commit();
271 public <T extends PfConcept> int deleteByConceptKey(final Class<T> someClass, final Collection<PfConceptKey> keys) {
272 if (keys == null || keys.isEmpty()) {
275 int deletedCount = 0;
276 final EntityManager mg = getEntityManager();
279 mg.getTransaction().begin();
280 for (final PfConceptKey key : keys) {
281 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
282 .setParameter(NAME, key.getName())
283 .setParameter(VERSION, key.getVersion())
286 mg.getTransaction().commit();
295 public <T extends PfConcept> int deleteByReferenceKey(final Class<T> someClass,
296 final Collection<PfReferenceKey> keys) {
297 if (keys == null || keys.isEmpty()) {
300 int deletedCount = 0;
301 final EntityManager mg = getEntityManager();
304 mg.getTransaction().begin();
305 for (final PfReferenceKey key : keys) {
306 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
307 .setParameter(PARENT_NAME, key.getParentKeyName())
308 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
309 .setParameter(LOCAL_NAME, key.getLocalName())
312 mg.getTransaction().commit();
321 public <T extends PfConcept> void deleteAll(final Class<T> someClass) {
322 final EntityManager mg = getEntityManager();
324 mg.getTransaction().begin();
325 mg.createQuery(setQueryTable(DELETE_FROM_TABLE, someClass), someClass).executeUpdate();
326 mg.getTransaction().commit();
333 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, final String name,
334 final String version) {
336 return getAll(someClass);
339 if (version == null) {
340 return getAllVersions(someClass, name);
343 T foundConcept = get(someClass, new PfConceptKey(name, version));
345 return (foundConcept == null ? Collections.emptyList() : Collections.singletonList(foundConcept));
349 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, final String name, final String version,
350 final Date startTime, final Date endTime, final Map<String, Object> filterMap) {
351 final EntityManager mg = getEntityManager();
353 String filterQueryString = SELECT_FROM_TABLE + WHERE;
356 if (filterMap != null) {
357 StringBuilder bld = new StringBuilder(filterQueryString);
358 for (String key : filterMap.keySet()) {
359 bld.append("c." + key + "= :" + key + AND);
361 filterQueryString = bld.toString();
363 filterQueryString = addKeyFilterString(filterQueryString, name, startTime, endTime);
364 TypedQuery<T> query = mg.createQuery(setQueryTable(filterQueryString, someClass), someClass);
366 if (filterMap != null) {
367 for (Map.Entry<String, Object> entry : filterMap.entrySet()) {
368 query.setParameter(entry.getKey(), entry.getValue());
372 query.setParameter("name", name);
374 if (startTime != null) {
375 if (endTime != null) {
376 query.setParameter("startTime", startTime);
377 query.setParameter("endTime", endTime);
379 query.setParameter("startTime", startTime);
382 if (endTime != null) {
383 query.setParameter("endTime", endTime);
387 LOGGER.error("filterQueryString is \"{}\"", filterQueryString);
388 return query.getResultList();
395 public <T extends PfConcept> T get(final Class<T> someClass, final PfConceptKey key) {
396 if (someClass == null) {
399 final EntityManager mg = getEntityManager();
401 final T t = mg.find(someClass, key);
402 return checkAndReturn(someClass, t);
409 public <T extends PfConcept> T get(final Class<T> someClass, final PfReferenceKey key) {
410 if (someClass == null) {
413 final EntityManager mg = getEntityManager();
415 final T t = mg.find(someClass, key);
416 return checkAndReturn(someClass, t);
423 public <T extends PfConcept> T get(final Class<T> someClass, final PfTimestampKey key) {
424 if (someClass == null) {
427 final EntityManager mg = getEntityManager();
429 final T t = mg.find(someClass, key);
430 return checkAndReturn(someClass, t);
437 public <T extends PfConcept> List<T> getAll(final Class<T> someClass) {
438 if (someClass == null) {
439 return Collections.emptyList();
441 final EntityManager mg = getEntityManager();
443 return mg.createQuery(setQueryTable(SELECT_FROM_TABLE, someClass), someClass).getResultList();
450 public <T extends PfConcept> List<T> getAll(final Class<T> someClass, final PfConceptKey parentKey) {
451 if (someClass == null) {
452 return Collections.emptyList();
454 final EntityManager mg = getEntityManager();
457 return mg.createQuery(setQueryTable(SELECT_ALL_FOR_PARENT, someClass), someClass)
458 .setParameter(PARENT_NAME, parentKey.getName())
459 .setParameter(PARENT_VERSION, parentKey.getVersion())
468 public <T extends PfConcept> List<T> getAllVersions(final Class<T> someClass, final String conceptName) {
469 if (someClass == null || conceptName == null) {
470 return Collections.emptyList();
472 final EntityManager mg = getEntityManager();
475 return mg.createQuery(setQueryTable(SELECT_ALL_VERSIONS, someClass), someClass)
476 .setParameter(NAME, conceptName)
485 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfConceptKey key) {
486 if (someClass == null || key == null) {
489 final EntityManager mg = getEntityManager();
493 ret = mg.createQuery(setQueryTable(SELECT_BY_CONCEPT_KEY, someClass), someClass)
494 .setParameter(NAME, key.getName())
495 .setParameter(VERSION, key.getVersion())
502 return getSingleResult(someClass, key.getId(), ret);
506 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfReferenceKey key) {
507 if (someClass == null || key == null) {
510 final EntityManager mg = getEntityManager();
514 ret = mg.createQuery(setQueryTable(SELECT_BY_REFERENCE_KEY, someClass), someClass)
515 .setParameter(PARENT_NAME, key.getParentKeyName())
516 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
517 .setParameter(LOCAL_NAME, key.getLocalName())
524 return getSingleResult(someClass, key.getId(), ret);
528 public <T extends PfConcept> T update(final T obj) {
529 final EntityManager mg = getEntityManager();
532 mg.getTransaction().begin();
535 mg.getTransaction().commit();
543 public <T extends PfConcept> long size(final Class<T> someClass) {
544 if (someClass == null) {
547 final EntityManager mg = getEntityManager();
550 size = mg.createQuery("SELECT COUNT(c) FROM " + someClass.getSimpleName() + " c", Long.class)
559 * Add the table to a query string.
561 * @param queryString the query string
562 * @param tableClass the class name of the table
563 * @return the updated query string
565 private <T extends PfConcept> String setQueryTable(final String queryString, final Class<T> tableClass) {
566 return queryString.replaceAll(TABLE_TOKEN, tableClass.getSimpleName());
570 * Check that a query returned one and only one entry and return that entry.
572 * @param someClass the class being searched for
573 * @param conceptName the concept name being searched for
574 * @param resultList the result list returned by the query
575 * @return the single unique result
577 private <T extends PfConcept> T getSingleResult(final Class<T> someClass, final String searchFilter, List<T> ret) {
578 if (ret == null || ret.isEmpty()) {
581 if (ret.size() > 1) {
582 throw new IllegalArgumentException("More than one result was returned query on " + someClass
583 + " with filter " + searchFilter + ": " + ret);
589 * generate filter string with the filter value in TimestampKey.
591 * @param inputFilterString current filterString generated from FilterMap
592 * @param name the pdp name the start timeStamp to filter from database, filter rule: startTime <= filteredRecord
593 * timeStamp <= endTime. null for ignore start time.
594 * @param endTime the end timeStamp to filter from database, filter rule: startTime <= filteredRecord timeStamp <=
595 * endTime. null for ignore end time
596 * @return the filter string to query database
598 private String addKeyFilterString(String inputFilterString, final String name, final Date startTime,
599 final Date endTime) {
600 String filterQueryString;
602 inputFilterString += NAME_FILTER + AND;
604 if (startTime != null) {
605 if (endTime != null) {
606 filterQueryString = inputFilterString + TIMESTAMP_START_FILTER + AND + TIMESTAMP_END_FILTER;
608 filterQueryString = inputFilterString + TIMESTAMP_START_FILTER;
611 if (endTime != null) {
612 filterQueryString = inputFilterString + TIMESTAMP_END_FILTER;
614 filterQueryString = inputFilterString.substring(0, inputFilterString.length() - AND.length());
618 return filterQueryString;
622 * check the result get from database and return the object.
624 * @param <T> the type of the object to get, a subclass of {@link PfConcept}
625 * @param someClass the class of the object to get, a subclass of {@link PfConcept}
626 * @param t the object that was retrieved from the database
627 * @return the checked object or null
629 private <T extends PfConcept> T checkAndReturn(final Class<T> someClass, final T objToCheck) {
630 if (objToCheck != null) {
632 return PfUtils.makeCopy(objToCheck);
633 } catch (final Exception e) {
634 LOGGER.warn(CLONE_ERR_MSG, someClass.getName(), e);