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     */
017    package org.apache.xbean.propertyeditor;
018    
019    /**
020     * A property editor for converting class names into class object instances
021     *
022     * @version $Rev: 6680 $
023     */
024    public 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    }