/*
 * Copyright 2004-2015 the Seasar Foundation and the Others.
 *
 * 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.seasar.extension.dxo.converter.impl;

import java.util.ArrayList;
import java.util.List;

import org.seasar.extension.dxo.converter.ConversionContext;
import org.seasar.framework.beans.ParameterizedClassDesc;

/**
 * 変換元オブジェクトを{@link List}に変換するコンバータです。
 * 
 * @author Satoshi Kimura
 * @author koichik
 */
public class ListConverter extends AbstractParameterizedCollectionConverter {

    public Class[] getSourceClasses() {
        return new Class[] { Object.class };
    }

    public Class getDestClass() {
        return List.class;
    }

    public Object convert(final Object source, final Class destClass,
            final ConversionContext context) {
        if (source == null) {
            return null;
        }
        if (shallowCopy && source instanceof List) {
            return source;
        }
        final List dest = new ArrayList();
        convert(source, dest, context);
        return dest;
    }

    public Object convert(final Object source, final Class destClass,
            final ParameterizedClassDesc parameterizedClassDesc,
            final ConversionContext context) {
        if (source == null) {
            return null;
        }
        final List dest = new ArrayList();
        convert(source, dest, parameterizedClassDesc, context);
        return dest;
    }

}