1 /**
2 * Copyright 2005-2015 The Kuali Foundation
3 *
4 * Licensed under the Educational Community License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.opensource.org/licenses/ecl2.php
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.kuali.rice.krad.data.jpa;
17
18 import javax.persistence.EntityManager;
19 import javax.persistence.Query;
20 import javax.persistence.TypedQuery;
21 import java.util.List;
22
23 /**
24 * JPA specialization of DataObjectCriteriaQuery.
25 *
26 * @author Kuali Rice Team (rice.collab@kuali.org)
27 */
28 class JpaCriteriaQuery extends DataObjectCriteriaQueryBase<NativeJpaQueryTranslator.TranslationContext, TypedQuery> {
29
30 /**
31 * The query translator to use for this implementation.
32 */
33 protected QueryTranslator<NativeJpaQueryTranslator.TranslationContext, TypedQuery> queryTranslator;
34
35 /**
36 * Creates a new JPA-specific criteria query.
37 *
38 * @param em the entity manager used in interacting with the database.
39 */
40 public JpaCriteriaQuery(EntityManager em) {
41 this.queryTranslator = new NativeJpaQueryTranslator(em);
42 }
43
44 /**
45 * {@inheritDoc}
46 */
47 @Override
48 protected QueryTranslator<NativeJpaQueryTranslator.TranslationContext, TypedQuery> getQueryTranslator() {
49 return queryTranslator;
50 }
51
52 /**
53 * {@inheritDoc}
54 */
55 @Override
56 @SuppressWarnings("unchecked")
57 public <T> List<T> getResults(TypedQuery query) {
58 return query.getResultList();
59 }
60
61 /**
62 * {@inheritDoc}
63 */
64 @Override
65 public int executeUpdate(Query query) {
66 return query.executeUpdate();
67 }
68
69 /**
70 * {@inheritDoc}
71 */
72 @Override
73 protected int getRowCount(TypedQuery query) {
74 // NOTE: is there a better way to do this (e.g. without retrieving full results)?
75 return query.getResultList().size();
76 }
77
78 /**
79 * {@inheritDoc}
80 */
81 @Override
82 public int getIncludedRowCount(TypedQuery query, List rows) {
83 return rows.size();
84 }
85 }