1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.dao.orm.hibernate;
24  
25  import com.liferay.portal.kernel.dao.orm.DynamicQuery;
26  import com.liferay.portal.kernel.dao.orm.DynamicQueryFactory;
27  
28  import java.util.HashMap;
29  import java.util.Map;
30  
31  import org.hibernate.criterion.DetachedCriteria;
32  
33  /**
34   * <a href="DynamicQueryFactoryImpl.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   *
38   */
39  public class DynamicQueryFactoryImpl implements DynamicQueryFactory {
40  
41      public DynamicQuery forClass(Class clazz) {
42          clazz = getImplClass(clazz);
43  
44          return new DynamicQueryImpl(DetachedCriteria.forClass(clazz));
45      }
46  
47      public DynamicQuery forClass(Class clazz, ClassLoader classLoader) {
48          clazz = getImplClass(clazz, classLoader);
49  
50          return new DynamicQueryImpl(DetachedCriteria.forClass(clazz));
51      }
52  
53      public DynamicQuery forClass(Class clazz, String alias) {
54          clazz = getImplClass(clazz);
55  
56          return new DynamicQueryImpl(DetachedCriteria.forClass(clazz, alias));
57      }
58  
59      public DynamicQuery forClass(
60          Class clazz, String alias, ClassLoader classLoader) {
61  
62          clazz = getImplClass(clazz, classLoader);
63  
64          return new DynamicQueryImpl(DetachedCriteria.forClass(clazz, alias));
65      }
66  
67      protected Class getImplClass(Class clazz) {
68          return getImplClass(clazz, null);
69      }
70  
71      protected Class getImplClass(Class clazz, ClassLoader classLoader) {
72          if (!clazz.getName().endsWith("Impl")) {
73              String implClassName =
74                  clazz.getPackage().getName() + ".impl." +
75                      clazz.getSimpleName() + "Impl";
76  
77              clazz = _classMap.get(implClassName);
78  
79              if (clazz == null) {
80                  try {
81                      if (classLoader == null) {
82                          Thread currentThread = Thread.currentThread();
83  
84                          classLoader = currentThread.getContextClassLoader();
85                      }
86  
87                      clazz = classLoader.loadClass(implClassName);
88  
89                      _classMap.put(implClassName, clazz);
90                  }
91                  catch (Exception e) {
92                  }
93              }
94          }
95  
96          return clazz;
97      }
98  
99      private Map<String, Class> _classMap = new HashMap<String, Class>();
100 
101 }