trunk/xbean-reflect/src/main/java/org/apache/xbean/propertyeditor/ClassEditor.java

/**
 *
 * Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.xbean.propertyeditor;

import org.apache.xbean.ClassLoading;

/**
 * A property editor for converting class names into class object instances
 *
 * @version $Rev: 6680 $
 */
public class ClassEditor extends AbstractConverter {
    public ClassEditor() {
        super(Class.class);
    }

    /**
     * Return a resolved class using the text value of the property as the name.
     * The class is loading using the current context class loader, using the resolution
     * rules defined by ClassLoading.java.
     *
     * @return a Class object created from the text value of the name.
     * @throws PropertyEditorException Unable to resolve the Class object from the name.
     */
    protected Object toObjectImpl(String text) {
        try {
            // load this using the current thread's context loader.
            return ClassLoading.loadClass(text, Thread.currentThread().getContextClassLoader());
        } catch (Exception e) {
            // not found exceptions are just turned into wrapped property exceptions.
            throw new PropertyEditorException("Unable to resolve class " + text, e);
        }
    }

    protected String toStringImpl(Object value) {
        Class clazz = (Class) value;
        String text = ClassLoading.getClassName(clazz);
        return text;
    }
}