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
019import java.beans.PropertyEditor;
020import java.lang.reflect.Array;
021import java.util.List;
022import java.util.ListIterator;
023
024/**
025 * Adapter for editing array types.
026 *
027 * @version $Rev: 6687 $ $Date: 2005-12-28T21:08:56.733437Z $
028 */
029public final class ArrayConverter extends AbstractCollectionConverter {
030    public ArrayConverter(Class type, PropertyEditor editor) {
031        super(type, editor);
032
033        if (!type.isArray()) {
034            throw new IllegalArgumentException("type is not an array " + type.getSimpleName());
035        }
036
037        if (type.getComponentType().isArray()) {
038            throw new IllegalArgumentException("type is a multi-dimensional array " + type.getSimpleName());
039        }
040
041        if (editor == null) throw new NullPointerException("editor is null");
042    }
043
044    protected Object createCollection(List list) {
045        Object array = Array.newInstance(getType().getComponentType(), list.size());
046        for (ListIterator iterator = list.listIterator(); iterator.hasNext();) {
047            Object item = iterator.next();
048            int index = iterator.previousIndex();
049            Array.set(array, index, item);
050        }
051        return array;
052    }
053}