1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.dao.orm.hibernate;
21  
22  import com.liferay.portal.kernel.dao.orm.DynamicQuery;
23  import com.liferay.portal.kernel.dao.orm.DynamicQueryFactory;
24  
25  import java.util.HashMap;
26  import java.util.Map;
27  
28  import org.hibernate.criterion.DetachedCriteria;
29  
30  /**
31   * <a href="DynamicQueryFactoryImpl.java.html"><b><i>View Source</i></b></a>
32   *
33   * @author Brian Wing Shun Chan
34   *
35   */
36  public class DynamicQueryFactoryImpl implements DynamicQueryFactory {
37  
38      public DynamicQuery forClass(Class clazz) {
39          clazz = getImplClass(clazz);
40  
41          return new DynamicQueryImpl(DetachedCriteria.forClass(clazz));
42      }
43  
44      public DynamicQuery forClass(Class clazz, ClassLoader classLoader) {
45          clazz = getImplClass(clazz, classLoader);
46  
47          return new DynamicQueryImpl(DetachedCriteria.forClass(clazz));
48      }
49  
50      public DynamicQuery forClass(Class clazz, String alias) {
51          clazz = getImplClass(clazz);
52  
53          return new DynamicQueryImpl(DetachedCriteria.forClass(clazz, alias));
54      }
55  
56      public DynamicQuery forClass(
57          Class clazz, String alias, ClassLoader classLoader) {
58  
59          clazz = getImplClass(clazz, classLoader);
60  
61          return new DynamicQueryImpl(DetachedCriteria.forClass(clazz, alias));
62      }
63  
64      protected Class getImplClass(Class clazz) {
65          return getImplClass(clazz, null);
66      }
67  
68      protected Class getImplClass(Class clazz, ClassLoader classLoader) {
69          if (!clazz.getName().endsWith("Impl")) {
70              String implClassName =
71                  clazz.getPackage().getName() + ".impl." +
72                      clazz.getSimpleName() + "Impl";
73  
74              clazz = _classMap.get(implClassName);
75  
76              if (clazz == null) {
77                  try {
78                      if (classLoader == null) {
79                          Thread currentThread = Thread.currentThread();
80  
81                          classLoader = currentThread.getContextClassLoader();
82                      }
83  
84                      clazz = classLoader.loadClass(implClassName);
85  
86                      _classMap.put(implClassName, clazz);
87                  }
88                  catch (Exception e) {
89                  }
90              }
91          }
92  
93          return clazz;
94      }
95  
96      private Map<String, Class> _classMap = new HashMap<String, Class>();
97  
98  }