com.buddycloud.friendfinder.handler.MatchContactHandler.java Source code

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Here is the source code for com.buddycloud.friendfinder.handler.MatchContactHandler.java

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/*
 * Copyright 2011 buddycloud
 *
 * 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 com.buddycloud.friendfinder.handler;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import org.dom4j.Attribute;
import org.dom4j.Element;
import org.jamppa.component.handler.AbstractQueryHandler;
import org.xmpp.packet.IQ;

import com.buddycloud.friendfinder.HashUtils;

/**
 * @author Abmar
 *
 */
public class MatchContactHandler extends AbstractQueryHandler {

    /**
     * 
     */
    private static final String NAMESPACE = "http://buddycloud.com/friend_finder/match";

    /**
     * @param namespace
     */
    public MatchContactHandler() {
        super(NAMESPACE);
    }

    /* (non-Javadoc)
     * @see org.jamppa.component.handler.QueryHandler#handle(org.xmpp.packet.IQ)
     */
    @SuppressWarnings("unchecked")
    @Override
    public IQ handle(IQ iq) {
        Element queryElement = iq.getElement().element("query");
        Iterator<Element> itemIterator = queryElement.elementIterator("item");

        List<MatchedUser> reportedHashes = new LinkedList<MatchedUser>();

        while (itemIterator.hasNext()) {
            Element item = (Element) itemIterator.next();
            Attribute meAttr = item.attribute("me");
            Attribute hashAttr = item.attribute("item-hash");

            String hash = hashAttr.getValue();

            if (meAttr != null && meAttr.getValue().equals("true")) {
                HashUtils.reportHash(iq.getFrom().toBareJID(), hash, getDataSource());
            } else {
                String jid = HashUtils.retrieveJid(hash, getDataSource());
                if (jid != null) {
                    reportedHashes.add(new MatchedUser(jid, hash));
                }
            }
        }

        return createResponse(iq, reportedHashes);
    }

    /**
     * @param iq
     * @param matchedUsers
     * @return
     */
    private IQ createResponse(IQ iq, List<MatchedUser> matchedUsers) {
        IQ result = IQ.createResultIQ(iq);
        Element queryElement = result.getElement().addElement("query", getNamespace());
        for (MatchedUser user : matchedUsers) {
            Element itemEl = queryElement.addElement("item");
            itemEl.addAttribute("jid", user.getJid());
            itemEl.addAttribute("matched-hash", user.getHash());
        }
        return result;
    }
}