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/*
 * Copyright 2007 Open Source Applications Foundation
 * 
 * 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.unitedinternet.cosmo.dav;

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;

/**
 * An exception indicating that a request method is not allowed on a resource
 * that already exists.
 */
@SuppressWarnings("serial")
public class ExistsException extends MethodNotAllowedException {
    /**
     * Constructor.
     */
    public ExistsException() {
        super("A resource exists at the request URI");
    }

    protected void writeContent(XMLStreamWriter writer)
        throws XMLStreamException {
        writer.writeStartElement("DAV:", "resource-must-be-null");
        writer.writeCharacters(getMessage());
        writer.writeEndElement();
    }
}