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    
018    package org.apache.geronimo.common.propertyeditor;
019    
020    import java.beans.PropertyEditor;
021    import java.beans.PropertyEditorSupport;
022    import java.lang.reflect.Array;
023    import java.util.LinkedList;
024    import java.util.List;
025    import java.util.StringTokenizer;
026    
027    /**
028     * Adapter for editing array types.
029     *
030     * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
031     */
032    public final class ArrayPropertyEditorAdapter extends PropertyEditorSupport {
033        private Class type;
034        private PropertyEditor editor;
035    
036        public ArrayPropertyEditorAdapter(final Class type, final PropertyEditor editor) {
037            if (type == null) {
038                throw new IllegalArgumentException("Type is null");
039            }
040            if (editor == null) {
041                throw new IllegalArgumentException("Editor is null");
042            }
043    
044            this.type = type;
045            this.editor = editor;
046        }
047    
048        public void setAsText(String text) {
049            if (text == null || text.length() == 0) {
050                setValue(null);
051            } else {
052                StringTokenizer stok = new StringTokenizer(text, ",");
053                final List list = new LinkedList();
054    
055                while (stok.hasMoreTokens()) {
056                    editor.setAsText(stok.nextToken());
057                    list.add(editor.getValue());
058                }
059    
060                Object array = Array.newInstance(type, list.size());
061                for (int i = 0; i < list.size(); i++) {
062                    Array.set(array, i, list.get(i));
063                }
064    
065                setValue(array);
066            }
067        }
068    
069        public String getAsText() {
070            Object[] objects = (Object[]) getValue();
071            if (objects == null || objects.length == 0) {
072                return null;
073            }
074    
075            StringBuffer result = new StringBuffer(String.valueOf(objects[0]));
076            for (int i = 1; i < objects.length; i++) {
077                result.append(",").append(objects[i]);
078            }
079    
080            return result.toString();
081    
082        }
083    }