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Java > Open Source Codes > org > apache > geronimo > common > propertyeditor > ClassEditor


1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. 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: 476049 $
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 JavaDoc getValue() {
37         try {
38             // load this using the current thread's context loader.
39 String JavaDoc className = getAsText().trim();
40             return ClassLoading.loadClass(className, Thread.currentThread().getContextClassLoader());
41         } catch (Exception JavaDoc 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 }
47
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