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.velocity;
21  
22  import com.liferay.portal.kernel.log.Log;
23  import com.liferay.portal.kernel.log.LogFactoryUtil;
24  
25  import java.util.Map;
26  import java.util.concurrent.ConcurrentHashMap;
27  
28  import javax.servlet.ServletContext;
29  
30  /**
31   * <a href="VelocityContextPool.java.html"><b><i>View Source</i></b></a>
32   *
33   * @author Brian Wing Shun Chan
34   *
35   */
36  public class VelocityContextPool {
37  
38      public static boolean containsKey(String name) {
39          return _instance._containsKey(name);
40      }
41  
42      public static ServletContext get(String name) {
43          return _instance._get(name);
44      }
45  
46      public static void put(String name, ServletContext servletContext) {
47          _instance._put(name, servletContext);
48      }
49  
50      public static ServletContext remove(String name) {
51          return _instance._remove(name);
52      }
53  
54      private VelocityContextPool() {
55          _pool = new ConcurrentHashMap<String, ServletContext>();
56      }
57  
58      private boolean _containsKey(String name) {
59          boolean value = _pool.containsKey(name);
60  
61          if (_log.isDebugEnabled()) {
62              _log.debug("Contains key " + name + " " + value);
63          }
64  
65          return value;
66      }
67  
68      private ServletContext _get(String name) {
69          ServletContext servletContext = _pool.get(name);
70  
71          if (_log.isDebugEnabled()) {
72              _log.debug("Get " + name + " " + servletContext);
73          }
74  
75          return servletContext;
76      }
77  
78      private void _put(String name, ServletContext servletContext) {
79          if (_log.isDebugEnabled()) {
80              _log.debug("Put " + name + " " + servletContext);
81          }
82  
83          _pool.put(name, servletContext);
84      }
85  
86      private ServletContext _remove(String name) {
87          ServletContext servletContext = _pool.remove(name);
88  
89          if (_log.isDebugEnabled()) {
90              _log.debug("Remove " + name + " " + servletContext);
91          }
92  
93          return servletContext;
94      }
95  
96      private static Log _log = LogFactoryUtil.getLog(VelocityContextPool.class);
97  
98      private static VelocityContextPool _instance = new VelocityContextPool();
99  
100     private Map<String, ServletContext> _pool;
101 
102 }