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.portlet;
21  
22  import com.liferay.portal.kernel.log.Log;
23  import com.liferay.portal.kernel.log.LogFactoryUtil;
24  import com.liferay.portal.model.Portlet;
25  import com.liferay.portal.util.PropsValues;
26  
27  import javax.portlet.PortletContext;
28  import javax.portlet.PortletMode;
29  import javax.portlet.PortletPreferences;
30  import javax.portlet.WindowState;
31  
32  import javax.servlet.http.HttpServletRequest;
33  
34  import org.apache.commons.pool.BasePoolableObjectFactory;
35  import org.apache.commons.pool.ObjectPool;
36  import org.apache.commons.pool.impl.StackObjectPool;
37  
38  /**
39   * <a href="EventRequestFactory.java.html"><b><i>View Source</i></b></a>
40   *
41   * @author Brian Wing Shun Chan
42   *
43   */
44  public class EventRequestFactory {
45  
46      public static EventRequestImpl create(
47              HttpServletRequest request, Portlet portlet,
48              InvokerPortlet invokerPortlet, PortletContext portletContext,
49              WindowState windowState, PortletMode portletMode,
50              PortletPreferences prefs, long plid)
51          throws Exception {
52  
53          if (PropsValues.COMMONS_POOL_ENABLED) {
54              if (_log.isDebugEnabled()) {
55                  _log.debug(
56                      "Borrowing:\t" + _instance._pool.getNumIdle() + "\t" +
57                          _instance._pool.getNumActive());
58              }
59          }
60  
61          EventRequestImpl eventRequestImpl = null;
62  
63          if (PropsValues.COMMONS_POOL_ENABLED) {
64              eventRequestImpl = (EventRequestImpl)_instance._pool.borrowObject();
65          }
66          else {
67              eventRequestImpl = new EventRequestImpl();
68          }
69  
70          eventRequestImpl.init(
71              request, portlet, invokerPortlet, portletContext, windowState,
72              portletMode, prefs, plid);
73  
74          return eventRequestImpl;
75      }
76  
77      public static void recycle(EventRequestImpl eventRequestImpl)
78          throws Exception {
79  
80          if (PropsValues.COMMONS_POOL_ENABLED) {
81              if (_log.isDebugEnabled()) {
82                  _log.debug(
83                      "Recycling:\t" + _instance._pool.getNumIdle() + "\t" +
84                          _instance._pool.getNumActive());
85              }
86  
87              _instance._pool.returnObject(eventRequestImpl);
88          }
89          else if (eventRequestImpl != null) {
90              eventRequestImpl.recycle();
91          }
92      }
93  
94      private EventRequestFactory() {
95          _pool = new StackObjectPool(new Factory());
96      }
97  
98      private static Log _log =
99          LogFactoryUtil.getLog(EventRequestFactory.class);
100 
101     private static EventRequestFactory _instance = new EventRequestFactory();
102 
103     private ObjectPool _pool;
104 
105     private class Factory extends BasePoolableObjectFactory {
106 
107         public Object makeObject() {
108             return new EventRequestImpl();
109         }
110 
111         public void passivateObject(Object obj) {
112             EventRequestImpl eventRequestImpl = (EventRequestImpl)obj;
113 
114             eventRequestImpl.recycle();
115         }
116 
117     }
118 
119 }