001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.xbean.propertyeditor;
018
019/**
020 * A property editor for converting class names into class object instances
021 *
022 * @version $Rev: 6680 $
023 */
024public class ClassEditor extends AbstractConverter {
025    public ClassEditor() {
026        super(Class.class);
027    }
028
029    /**
030     * Return a resolved class using the text value of the property as the name.
031     * The class is loading using the current context class loader, using the resolution
032     * rules defined by ClassLoading.java.
033     *
034     * @return a Class object created from the text value of the name.
035     * @throws PropertyEditorException Unable to resolve the Class object from the name.
036     */
037    protected Object toObjectImpl(String text) {
038        try {
039            // load this using the current thread's context loader.
040            return Class.forName(text, true, Thread.currentThread().getContextClassLoader());
041        } catch (Exception e) {
042            // not found exceptions are just turned into wrapped property exceptions.
043            throw new PropertyEditorException("Unable to resolve class " + text, e);
044        }
045    }
046
047    protected String toStringImpl(Object value) {
048        Class type = (Class) value;
049        String text = type.getSimpleName();
050        return text;
051    }
052}