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.model.PortletApp;
23  
24  import java.util.Map;
25  import java.util.concurrent.ConcurrentHashMap;
26  
27  import javax.portlet.PortletContext;
28  import javax.portlet.PortletException;
29  import javax.portlet.UnavailableException;
30  import javax.portlet.filter.FilterConfig;
31  import javax.portlet.filter.PortletFilter;
32  
33  /**
34   * <a href="PortletFilterFactory.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   *
38   */
39  public class PortletFilterFactory {
40  
41      public static PortletFilter create(
42              com.liferay.portal.model.PortletFilter portletFilterModel,
43              PortletContext ctx)
44          throws PortletException {
45  
46          return _instance._create(portletFilterModel, ctx);
47      }
48  
49      public static void destroy(
50          com.liferay.portal.model.PortletFilter portletFilterModel) {
51  
52          _instance._destroy(portletFilterModel);
53      }
54  
55      private PortletFilterFactory() {
56          _pool = new ConcurrentHashMap<String, Map<String, PortletFilter>>();
57      }
58  
59      private PortletFilter _create(
60              com.liferay.portal.model.PortletFilter portletFilterModel,
61              PortletContext ctx)
62          throws PortletException {
63  
64          PortletApp portletApp = portletFilterModel.getPortletApp();
65  
66          Map<String, PortletFilter> portletFilters = _pool.get(
67              portletApp.getServletContextName());
68  
69          if (portletFilters == null) {
70              portletFilters = new ConcurrentHashMap<String, PortletFilter>();
71  
72              _pool.put(portletApp.getServletContextName(), portletFilters);
73          }
74  
75          PortletFilter portletFilter = portletFilters.get(
76              portletFilterModel.getFilterName());
77  
78          if (portletFilter == null) {
79              FilterConfig filterConfig =
80                  FilterConfigFactory.create(portletFilterModel, ctx);
81  
82              if (portletApp.isWARFile()) {
83                  PortletContextBag portletContextBag = PortletContextBagPool.get(
84                      portletApp.getServletContextName());
85  
86                  portletFilter = portletContextBag.getPortletFilters().get(
87                      portletFilterModel.getFilterName());
88  
89                  portletFilter = _init(
90                      portletFilterModel, filterConfig, portletFilter);
91              }
92              else {
93                  portletFilter = _init(portletFilterModel, filterConfig);
94              }
95  
96              portletFilters.put(
97                  portletFilterModel.getFilterName(), portletFilter);
98          }
99  
100         return portletFilter;
101     }
102 
103     private void _destroy(
104         com.liferay.portal.model.PortletFilter portletFilterModel) {
105 
106         PortletApp portletApp = portletFilterModel.getPortletApp();
107 
108         Map<String, PortletFilter> portletFilters = _pool.get(
109             portletApp.getServletContextName());
110 
111         if (portletFilters == null) {
112             return;
113         }
114 
115         PortletFilter portletFilter = portletFilters.get(
116             portletFilterModel.getFilterName());
117 
118         if (portletFilter == null) {
119             return;
120         }
121 
122         portletFilter.destroy();
123 
124         portletFilters.remove(portletFilterModel.getFilterName());
125     }
126 
127     private PortletFilter _init(
128             com.liferay.portal.model.PortletFilter portletFilterModel,
129             FilterConfig filterConfig)
130         throws PortletException {
131 
132         return _init(portletFilterModel, filterConfig, null);
133     }
134 
135     private PortletFilter _init(
136             com.liferay.portal.model.PortletFilter portletFilterModel,
137             FilterConfig filterConfig, PortletFilter portletFilter)
138         throws PortletException {
139 
140         try {
141             if (portletFilter == null) {
142                 portletFilter = (PortletFilter)Class.forName(
143                     portletFilterModel.getFilterClass()).newInstance();
144             }
145 
146             portletFilter.init(filterConfig);
147         }
148         catch (ClassNotFoundException cnofe) {
149             throw new UnavailableException(cnofe.getMessage());
150         }
151         catch (InstantiationException ie) {
152             throw new UnavailableException(ie.getMessage());
153         }
154         catch (IllegalAccessException iae) {
155             throw new UnavailableException(iae.getMessage());
156         }
157 
158         return portletFilter;
159     }
160 
161     private static PortletFilterFactory _instance = new PortletFilterFactory();
162 
163     private Map<String, Map<String, PortletFilter>> _pool;
164 
165 }