org.maodian.flyingcat.xmpp.extensions.xep0030.QueryItemCodec.java Source code

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Here is the source code for org.maodian.flyingcat.xmpp.extensions.xep0030.QueryItemCodec.java

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/*
 * Copyright 2013 - 2013 Cole Wen
 *
 * 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.maodian.flyingcat.xmpp.extensions.xep0030;

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

import org.maodian.flyingcat.xmpp.codec.AbstractCodec;
import org.maodian.flyingcat.xmpp.codec.InfoQueryProcessor;
import org.maodian.flyingcat.xmpp.entity.InfoQuery;
import org.maodian.flyingcat.xmpp.state.StreamError;
import org.maodian.flyingcat.xmpp.state.XmppContext;
import org.maodian.flyingcat.xmpp.state.XmppException;
import org.springframework.stereotype.Component;

/**
 * @author Cole Wen
 *
 */
@Component
public class QueryItemCodec extends AbstractCodec implements InfoQueryProcessor {

    /* (non-Javadoc)
     * @see org.maodian.flycat.xmpp.codec.Decoder#decode(javax.xml.stream.XMLStreamReader)
     */
    @Override
    public Object decode(XMLStreamReader xmlsr) {
        try {
            xmlsr.require(XMLStreamConstants.START_ELEMENT, ServiceDiscovery.ITEM, "query");
            return new QueryItem();
        } catch (XMLStreamException e) {
            throw new XmppException(e, StreamError.INVALID_XML);
        }
    }

    /* (non-Javadoc)
     * @see org.maodian.flycat.xmpp.codec.Encoder#encode(java.lang.Object, javax.xml.stream.XMLStreamWriter)
     */
    @Override
    public void encode(Object object, XMLStreamWriter xmlsw) throws XMLStreamException {
        xmlsw.writeStartElement("", "query", ServiceDiscovery.ITEM);
        xmlsw.writeDefaultNamespace(ServiceDiscovery.ITEM);
    }

    /* (non-Javadoc)
     * @see org.maodian.flycat.xmpp.payload.Processor#process(java.lang.Object)
     */
    @Override
    public Object processGet(XmppContext context, InfoQuery iq) {
        return new QueryItem();
    }

    /* (non-Javadoc)
     * @see org.maodian.flycat.xmpp.codec.InfoQueryProcessor#processSet(org.maodian.flycat.xmpp.state.XmppContext, org.maodian.flycat.xmpp.InfoQuery)
     */
    @Override
    public Object processSet(XmppContext context, InfoQuery iq) {
        throw new UnsupportedOperationException();
    }

}