/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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
 *
 *    https://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.grails.web.converters.marshaller.xml;

import java.util.Collection;
import java.util.Set;

import grails.converters.XML;
import org.grails.web.converters.exceptions.ConverterException;
import org.grails.web.converters.marshaller.NameAwareMarshaller;
import org.grails.web.converters.marshaller.ObjectMarshaller;

/**
 * @author Siegfried Puchbauer
 * @since 1.1
 */
@SuppressWarnings("rawtypes")
public class CollectionMarshaller implements ObjectMarshaller<XML>, NameAwareMarshaller {

    public boolean supports(Object object) {
        return object instanceof Collection;
    }

    public void marshalObject(Object object, XML xml) throws ConverterException {
        Collection col = (Collection) object;
        for (Object o : col) {
            if (o != null) {
                xml.startNode(xml.getElementName(o));
                xml.convertAnother(o);
                xml.end();
            }
            else {
                xml.startNode("null");
                xml.end();
            }
        }
    }

    public String getElementName(Object o) {
        return o instanceof Set ? "set" : "list";
    }
}
