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1   /**
2    *
3    * Copyright 2003-2004 The Apache Software Foundation
4    *
5    *  Licensed under the Apache License, Version 2.0 (the "License");
6    *  you may not use this file except in compliance with the License.
7    *  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  
18  package org.apache.geronimo.common.propertyeditor;
19  
20  import org.apache.geronimo.kernel.ClassLoading;
21  
22  /**
23   * A property editor for converting class names into class object instances
24   *
25   * @version $Rev: 356022 $
26   */
27  public class ClassEditor extends TextPropertyEditorSupport {
28      /**
29       * Return a resolved class using the text value of the property as the name.
30       * The class is loading using the current context class loader, using the resolution
31       * rules defined by ClassLoading.java.
32       *
33       * @return a Class object created from the text value of the name.
34       * @throws PropertyEditorException Unable to resolve the Class object from the name.
35       */
36      public Object getValue() {
37          try {
38              // load this using the current thread's context loader.
39              String className = getAsText().trim();
40              return ClassLoading.loadClass(className, Thread.currentThread().getContextClassLoader());
41          } catch (Exception e) {
42              // not found exceptions are just turned into wrapped property exceptions.
43              throw new PropertyEditorException("Unable to resolve class " + getAsText(), e);
44          }
45      }
46  }