trunk/xbean-reflect/src/main/java/org/apache/xbean/propertyeditor/ArrayConverter.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 java.beans.PropertyEditor;
import java.lang.reflect.Array;
import java.util.List;
import java.util.ListIterator;

import org.apache.xbean.ClassLoading;

/**
 * Adapter for editing array types.
 *
 * @version $Rev: 6687 $ $Date: 2005-12-28T21:08:56.733437Z $
 */
public final class ArrayConverter extends AbstractCollectionConverter {
    public ArrayConverter(Class type, PropertyEditor editor) {
        super(type, editor);

        if (!type.isArray()) {
            throw new IllegalArgumentException("type is not an array " + ClassLoading.getClassName(type));
        }

        if (type.getComponentType().isArray()) {
            throw new IllegalArgumentException("type is a multi-dimensional array " + ClassLoading.getClassName(type, true));
        }

        if (editor == null) throw new NullPointerException("editor is null");
    }

    protected Object createCollection(List list) {
        Object array = Array.newInstance(getType().getComponentType(), list.size());
        for (ListIterator iterator = list.listIterator(); iterator.hasNext();) {
            Object item = iterator.next();
            int index = iterator.previousIndex();
            Array.set(array, index, item);
        }
        return array;
    }
}