View Javadoc

1   /*
2    * Copyright 2002,2004 The Apache Software Foundation.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.jexl.util;
17  
18  import org.apache.commons.jexl.util.introspection.Uberspect;
19  import org.apache.commons.jexl.util.introspection.UberspectImpl;
20  import org.apache.commons.jexl.util.introspection.UberspectLoggable;
21  import org.apache.commons.logging.Log;
22  import org.apache.commons.logging.LogFactory;
23  
24  /***
25   *  Little class to manage a Velocity uberspector (Vel 1.4+) for instrospective
26   *  services.
27   *
28   *  @since 1.0
29   *  @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
30   *  @version $Id: Introspector.java 398171 2006-04-29 14:57:29Z dion $
31   */
32  public class Introspector {
33      /***
34       *  The uberspector from Velocity that handles all instrospection patterns.
35       */
36      private static Uberspect uberSpect;
37  
38      static {
39  
40          Log logger = LogFactory.getLog(Introspector.class);
41  
42          uberSpect = new UberspectImpl();
43          ((UberspectLoggable) uberSpect).setRuntimeLogger(logger);
44      }
45  
46      /***
47       *  For now, expose the raw uberspector to the AST.
48       *
49       *  @return Uberspect The Velocity uberspector.
50       */
51      public static Uberspect getUberspect() {
52          return uberSpect;
53      }
54  }