1 /*
2 * Copyright 2001-2008 The Apache Software Foundation.
3 *
4 * Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
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 */
17
18 package org.apache.juddi.query;
19
20 import java.util.List;
21
22 import javax.persistence.EntityManager;
23
24 import org.apache.juddi.query.util.DynamicQuery;
25 import org.apache.juddi.query.util.FindQualifiers;
26 import org.uddi.api_v3.CategoryBag;
27
28 /**
29 * Returns the list of service keys possessing the keyedReferences in the passed category bag.
30 * Output is restricted by list of service keys passed in. If null, all business services are searched.
31 * Output is produced by building the appropriate JPA query based on input and find qualifiers.
32 *
33 * From specification:
34 * "This is a list of category references. The returned serviceList contains serviceInfo structures matching all of
35 * the categories passed (logical AND by default). Specifying the appropriate findQualifiers can override this behavior."
36 *
37 * @author <a href="mailto:jfaath@apache.org">Jeff Faath</a>
38 */
39 public class FindServiceByCategoryQuery {
40
41 private static final String ENTITY_NAME_CHILD = "ServiceCategoryBag";
42
43 private static final FindEntityByCategoryQuery findQuery;
44
45 static {
46 findQuery = new FindEntityByCategoryQuery(BusinessServiceQuery.ENTITY_NAME,
47 BusinessServiceQuery.ENTITY_ALIAS,
48 BusinessServiceQuery.KEY_NAME,
49 BusinessServiceQuery.ENTITY_FIELD,
50 ENTITY_NAME_CHILD,
51 BusinessServiceQuery.SIGNATURE_PRESENT);
52 }
53
54 public static List<Object> select(EntityManager em, FindQualifiers fq, CategoryBag categoryBag, String parentKey, List<Object> keysIn) {
55 if (parentKey != null && parentKey.length() > 0) {
56 DynamicQuery.Parameter param = new DynamicQuery.Parameter(BusinessServiceQuery.ENTITY_ALIAS + "."
57 + BusinessServiceQuery.KEY_NAME_PARENT, parentKey, DynamicQuery.PREDICATE_EQUALS);
58 return findQuery.select(em, fq, categoryBag, keysIn, param);
59 }
60 else
61 return findQuery.select(em, fq, categoryBag, keysIn);
62 }
63 }