2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019-2021 Nordix Foundation.
4 * Modifications Copyright (C) 2019-2021 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.sql.Timestamp;
25 import java.time.Instant;
26 import java.util.Collection;
27 import java.util.Collections;
28 import java.util.List;
30 import javax.persistence.EntityManager;
31 import javax.persistence.EntityManagerFactory;
32 import javax.persistence.Persistence;
33 import javax.persistence.TypedQuery;
34 import javax.ws.rs.core.Response;
35 import org.onap.policy.models.base.PfConcept;
36 import org.onap.policy.models.base.PfConceptKey;
37 import org.onap.policy.models.base.PfModelException;
38 import org.onap.policy.models.base.PfModelRuntimeException;
39 import org.onap.policy.models.base.PfReferenceKey;
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.slf4j.Logger;
45 import org.slf4j.LoggerFactory;
48 * The Class DefaultPfDao is an JPA implementation of the {@link PfDao} class for Policy Framework concepts
49 * ({@link PfConcept}). It uses the default JPA implementation in the javax {@link Persistence} class.
51 public class DefaultPfDao implements PfDao {
52 private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPfDao.class);
55 private static final String NAME = "name";
56 private static final String VERSION = "version";
57 private static final String TIMESTAMP = "timeStamp";
58 private static final String PARENT_NAME = "parentname";
59 private static final String PARENT_VERSION = "parentversion";
60 private static final String LOCAL_NAME = "localname";
62 private static final String TABLE_TOKEN = "__TABLE__";
64 private static final String DELETE_FROM_TABLE = "DELETE FROM __TABLE__ c";
66 private static final String SELECT_FROM_TABLE = "SELECT c FROM __TABLE__ c";
68 private static final String WHERE = " WHERE ";
69 private static final String AND = " AND ";
70 private static final String ORDER = " ORDER BY ";
72 private static final String NAME_FILTER = "c.key.name = :name";
73 private static final String VERSION_FILTER = "c.key.version = :version";
74 private static final String TIMESTAMP_FILTER = "c.key.timeStamp = :timeStamp";
75 private static final String TIMESTAMP_START_FILTER = "c.key.timeStamp >= :startTime";
76 private static final String TIMESTAMP_END_FILTER = "c.key.timeStamp <= :endTime";
77 private static final String PARENT_NAME_FILTER = "c.key.parentKeyName = :parentname";
78 private static final String PARENT_VERSION_FILTER = "c.key.parentKeyVersion = :parentversion";
79 private static final String LOCAL_NAME_FILTER = "c.key.localName = :localname";
81 private static final String CLONE_ERR_MSG = "Could not clone object of class \"{}\"";
83 private static final String DELETE_BY_CONCEPT_KEY =
84 DELETE_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
86 private static final String DELETE_BY_TIMESTAMP_KEY =
87 DELETE_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER + AND + TIMESTAMP_FILTER;
89 private static final String DELETE_BY_REFERENCE_KEY =
90 DELETE_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
92 private static final String SELECT_ALL_FOR_PARENT =
93 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER;
95 private static final String SELECT_ALL_VERSIONS_FOR_PARENT =
96 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER;
98 private static final String SELECT_ALL_VERSIONS = SELECT_FROM_TABLE + WHERE + NAME_FILTER;
100 private static final String SELECT_BY_CONCEPT_KEY =
101 SELECT_FROM_TABLE + WHERE + NAME_FILTER + AND + VERSION_FILTER;
103 private static final String SELECT_BY_REFERENCE_KEY =
104 SELECT_FROM_TABLE + WHERE + PARENT_NAME_FILTER + AND + PARENT_VERSION_FILTER + AND + LOCAL_NAME_FILTER;
107 // Entity manager for JPA
108 private EntityManagerFactory emf = null;
111 public void init(final DaoParameters daoParameters) throws PfModelException {
112 if (daoParameters == null || daoParameters.getPersistenceUnit() == null) {
113 LOGGER.error("Policy Framework persistence unit parameter not set");
114 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR,
115 "Policy Framework persistence unit parameter not set");
118 LOGGER.debug("Creating Policy Framework persistence unit \"{}\" . . .", daoParameters.getPersistenceUnit());
120 emf = Persistence.createEntityManagerFactory(daoParameters.getPersistenceUnit(),
121 daoParameters.getJdbcProperties());
122 } catch (final Exception ex) {
123 String errorMessage = "Creation of Policy Framework persistence unit \""
124 + daoParameters.getPersistenceUnit() + "\" failed";
125 LOGGER.warn(errorMessage);
126 throw new PfModelException(Response.Status.INTERNAL_SERVER_ERROR, errorMessage, ex);
128 LOGGER.debug("Created Policy Framework persistence unit \"{}\"", daoParameters.getPersistenceUnit());
132 * Gets the entity manager for this DAO.
134 * @return the entity manager
136 protected final synchronized EntityManager getEntityManager() {
138 LOGGER.warn("Policy Framework DAO has not been initialized");
139 throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR,
140 "Policy Framework DAO has not been initialized");
143 return emf.createEntityManager();
147 public final void close() {
154 public <T extends PfConcept> void create(final T obj) {
158 final EntityManager mg = getEntityManager();
160 mg.getTransaction().begin();
162 mg.getTransaction().commit();
169 public <T extends PfConcept> void delete(final T obj) {
173 final EntityManager mg = getEntityManager();
175 mg.getTransaction().begin();
176 mg.remove(mg.contains(obj) ? obj : mg.merge(obj));
177 mg.getTransaction().commit();
184 public <T extends PfConcept> void delete(final Class<T> someClass, final PfConceptKey key) {
188 final EntityManager mg = getEntityManager();
191 mg.getTransaction().begin();
192 mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
193 .setParameter(NAME, key.getName())
194 .setParameter(VERSION, key.getVersion())
196 mg.getTransaction().commit();
204 public <T extends PfConcept> void delete(final Class<T> someClass, final PfReferenceKey key) {
208 final EntityManager mg = getEntityManager();
211 mg.getTransaction().begin();
212 mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
213 .setParameter(PARENT_NAME, key.getParentKeyName())
214 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
215 .setParameter(LOCAL_NAME, key.getLocalName())
217 mg.getTransaction().commit();
225 public <T extends PfConcept> void delete(final Class<T> someClass, final PfTimestampKey key) {
229 final EntityManager mg = getEntityManager();
232 mg.getTransaction().begin();
233 mg.createQuery(setQueryTable(DELETE_BY_TIMESTAMP_KEY, someClass), someClass)
234 .setParameter(NAME, key.getName())
235 .setParameter(VERSION, key.getVersion())
236 .setParameter(TIMESTAMP, key.getTimeStamp())
238 mg.getTransaction().commit();
246 public <T extends PfConcept> void createCollection(final Collection<T> objs) {
247 if (objs == null || objs.isEmpty()) {
250 final EntityManager mg = getEntityManager();
252 mg.getTransaction().begin();
253 for (final T t : objs) {
256 mg.getTransaction().commit();
263 public <T extends PfConcept> void deleteCollection(final Collection<T> objs) {
264 if (objs == null || objs.isEmpty()) {
267 final EntityManager mg = getEntityManager();
269 mg.getTransaction().begin();
270 for (final T t : objs) {
271 mg.remove(mg.contains(t) ? t : mg.merge(t));
273 mg.getTransaction().commit();
280 public <T extends PfConcept> int deleteByConceptKey(final Class<T> someClass, final Collection<PfConceptKey> keys) {
281 if (keys == null || keys.isEmpty()) {
284 int deletedCount = 0;
285 final EntityManager mg = getEntityManager();
288 mg.getTransaction().begin();
289 for (final PfConceptKey key : keys) {
290 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_CONCEPT_KEY, someClass), someClass)
291 .setParameter(NAME, key.getName())
292 .setParameter(VERSION, key.getVersion())
295 mg.getTransaction().commit();
304 public <T extends PfConcept> int deleteByReferenceKey(final Class<T> someClass,
305 final Collection<PfReferenceKey> keys) {
306 if (keys == null || keys.isEmpty()) {
309 int deletedCount = 0;
310 final EntityManager mg = getEntityManager();
313 mg.getTransaction().begin();
314 for (final PfReferenceKey key : keys) {
315 deletedCount += mg.createQuery(setQueryTable(DELETE_BY_REFERENCE_KEY, someClass), someClass)
316 .setParameter(PARENT_NAME, key.getParentKeyName())
317 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
318 .setParameter(LOCAL_NAME, key.getLocalName())
321 mg.getTransaction().commit();
330 public <T extends PfConcept> void deleteAll(final Class<T> someClass) {
331 final EntityManager mg = getEntityManager();
333 mg.getTransaction().begin();
334 mg.createQuery(setQueryTable(DELETE_FROM_TABLE, someClass), someClass).executeUpdate();
335 mg.getTransaction().commit();
342 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, final String name,
343 final String version) {
345 return getAll(someClass);
348 if (version == null) {
349 return getAllVersions(someClass, name);
352 T foundConcept = get(someClass, new PfConceptKey(name, version));
354 return (foundConcept == null ? Collections.emptyList() : Collections.singletonList(foundConcept));
358 public <T extends PfConcept> List<T> getFiltered(final Class<T> someClass, final String name, final String version,
359 final Instant startTime, final Instant endTime, final Map<String, Object> filterMap, final String sortOrder,
360 final int getRecordNum) {
361 final EntityManager mg = getEntityManager();
363 String filterQueryString = SELECT_FROM_TABLE + WHERE;
366 if (filterMap != null) {
367 filterQueryString = buildFilter(filterMap, filterQueryString);
369 filterQueryString = addKeyFilterString(filterQueryString, name, startTime, endTime);
370 if (getRecordNum > 0) {
371 filterQueryString += ORDER + " c.key.timeStamp " + sortOrder;
373 TypedQuery<T> query = mg.createQuery(setQueryTable(filterQueryString, someClass), someClass);
375 if (filterMap != null) {
376 for (Map.Entry<String, Object> entry : filterMap.entrySet()) {
377 query.setParameter(entry.getKey(), entry.getValue());
381 query.setParameter("name", name);
383 if (startTime != null) {
384 if (endTime != null) {
385 query.setParameter("startTime", Timestamp.from(startTime));
386 query.setParameter("endTime", Timestamp.from(endTime));
388 query.setParameter("startTime", Timestamp.from(startTime));
391 if (endTime != null) {
392 query.setParameter("endTime", Timestamp.from(endTime));
395 if (getRecordNum > 0) {
396 query.setMaxResults(getRecordNum);
399 LOGGER.debug("filterQueryString is \"{}\"", filterQueryString);
400 return query.getResultList();
406 private String buildFilter(final Map<String, Object> filterMap, String filterQueryString) {
407 StringBuilder bld = new StringBuilder(filterQueryString);
408 for (String key : filterMap.keySet()) {
409 bld.append("c." + key + "= :" + key + AND);
411 return bld.toString();
415 public <T extends PfConcept> T get(final Class<T> someClass, final PfConceptKey key) {
416 return genericGet(someClass, key);
420 public <T extends PfConcept> T get(final Class<T> someClass, final PfReferenceKey key) {
421 return genericGet(someClass, key);
425 public <T extends PfConcept> T get(final Class<T> someClass, final PfTimestampKey key) {
426 return genericGet(someClass, key);
429 private <T extends PfConcept> T genericGet(final Class<T> someClass, final Object key) {
430 if (someClass == null) {
433 final EntityManager mg = getEntityManager();
435 final T t = mg.find(someClass, key);
439 return checkAndReturn(someClass, t);
446 public <T extends PfConcept> List<T> getAll(final Class<T> someClass) {
447 if (someClass == null) {
448 return Collections.emptyList();
450 final EntityManager mg = getEntityManager();
452 return mg.createQuery(setQueryTable(SELECT_FROM_TABLE, someClass), someClass).getResultList();
459 public <T extends PfConcept> List<T> getAll(final Class<T> someClass, final PfConceptKey parentKey) {
460 if (someClass == null) {
461 return Collections.emptyList();
463 final EntityManager mg = getEntityManager();
466 return mg.createQuery(setQueryTable(SELECT_ALL_FOR_PARENT, someClass), someClass)
467 .setParameter(PARENT_NAME, parentKey.getName())
468 .setParameter(PARENT_VERSION, parentKey.getVersion())
477 public <T extends PfConcept> List<T> getAllVersionsByParent(final Class<T> someClass, final String parentKeyName) {
478 if (someClass == null || parentKeyName == null) {
479 return Collections.emptyList();
481 final EntityManager mg = getEntityManager();
484 return mg.createQuery(setQueryTable(SELECT_ALL_VERSIONS_FOR_PARENT, someClass), someClass)
485 .setParameter(PARENT_NAME, parentKeyName)
494 public <T extends PfConcept> List<T> getAllVersions(final Class<T> someClass, final String conceptName) {
495 if (someClass == null || conceptName == null) {
496 return Collections.emptyList();
498 final EntityManager mg = getEntityManager();
501 return mg.createQuery(setQueryTable(SELECT_ALL_VERSIONS, someClass), someClass)
502 .setParameter(NAME, conceptName)
511 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfConceptKey key) {
512 if (someClass == null || key == null) {
515 final EntityManager mg = getEntityManager();
519 ret = mg.createQuery(setQueryTable(SELECT_BY_CONCEPT_KEY, someClass), someClass)
520 .setParameter(NAME, key.getName())
521 .setParameter(VERSION, key.getVersion())
528 return getSingleResult(someClass, key.getId(), ret);
532 public <T extends PfConcept> T getConcept(final Class<T> someClass, final PfReferenceKey key) {
533 if (someClass == null || key == null) {
536 final EntityManager mg = getEntityManager();
540 ret = mg.createQuery(setQueryTable(SELECT_BY_REFERENCE_KEY, someClass), someClass)
541 .setParameter(PARENT_NAME, key.getParentKeyName())
542 .setParameter(PARENT_VERSION, key.getParentKeyVersion())
543 .setParameter(LOCAL_NAME, key.getLocalName())
550 return getSingleResult(someClass, key.getId(), ret);
554 public <T extends PfConcept> T update(final T obj) {
555 final EntityManager mg = getEntityManager();
558 mg.getTransaction().begin();
561 mg.getTransaction().commit();
569 public <T extends PfConcept> long size(final Class<T> someClass) {
570 if (someClass == null) {
573 final EntityManager mg = getEntityManager();
576 size = mg.createQuery("SELECT COUNT(c) FROM " + someClass.getSimpleName() + " c", Long.class)
585 * Add the table to a query string.
587 * @param queryString the query string
588 * @param tableClass the class name of the table
589 * @return the updated query string
591 private <T extends PfConcept> String setQueryTable(final String queryString, final Class<T> tableClass) {
592 return queryString.replace(TABLE_TOKEN, tableClass.getSimpleName());
596 * Check that a query returned one and only one entry and return that entry.
598 * @param someClass the class being searched for
599 * @param conceptName the concept name being searched for
600 * @param resultList the result list returned by the query
601 * @return the single unique result
603 private <T extends PfConcept> T getSingleResult(final Class<T> someClass, final String searchFilter, List<T> ret) {
604 if (ret == null || ret.isEmpty()) {
607 if (ret.size() > 1) {
608 throw new IllegalArgumentException("More than one result was returned query on " + someClass
609 + " with filter " + searchFilter + ": " + ret);
615 * generate filter string with the filter value in TimestampKey.
617 * @param inputFilterString current filterString generated from FilterMap
618 * @param name the pdp name the start timeStamp to filter from database, filter rule: startTime <= filteredRecord
619 * timeStamp <= endTime. null for ignore start time.
620 * @param endTime the end timeStamp to filter from database, filter rule: startTime <= filteredRecord timeStamp <=
621 * endTime. null for ignore end time
622 * @return the filter string to query database
624 private String addKeyFilterString(String inputFilterString, final String name, final Instant startTime,
625 final Instant endTime) {
626 String filterQueryString;
628 inputFilterString += NAME_FILTER + AND;
630 if (startTime != null) {
631 if (endTime != null) {
632 filterQueryString = inputFilterString + TIMESTAMP_START_FILTER + AND + TIMESTAMP_END_FILTER;
634 filterQueryString = inputFilterString + TIMESTAMP_START_FILTER;
637 if (endTime != null) {
638 filterQueryString = inputFilterString + TIMESTAMP_END_FILTER;
640 filterQueryString = inputFilterString.substring(0, inputFilterString.length() - AND.length());
644 return filterQueryString;
648 * check the result get from database and return the object.
650 * @param <T> the type of the object to get, a subclass of {@link PfConcept}
651 * @param someClass the class of the object to get, a subclass of {@link PfConcept}
652 * @param t the object that was retrieved from the database
653 * @return the checked object or null
655 private <T extends PfConcept> T checkAndReturn(final Class<T> someClass, final T objToCheck) {
656 if (objToCheck != null) {
658 return PfUtils.makeCopy(objToCheck);
659 } catch (final Exception e) {
660 LOGGER.warn(CLONE_ERR_MSG, someClass.getName(), e);