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SymmetricDS is an open source database synchronization solution. It is platform-independent, web-enabled, and database-agnostic. SymmetricDS was first built to replicate changes between 'retail store' databases and ad centralized 'corporate' database.

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/*
 * Licensed to JumpMind Inc under one or more contributor 
 * license agreements.  See the NOTICE file distributed
 * with this work for additional information regarding 
 * copyright ownership.  JumpMind Inc licenses this file
 * to you under the GNU Lesser General Public License (the
 * "License"); you may not use this file except in compliance
 * with the License. 
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see           
 * .
 * 
 * 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.jumpmind.symmetric.integrate;

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

import org.jdom.Element;
import org.jumpmind.symmetric.model.DataMetaData;
import org.jumpmind.symmetric.model.Node;
import org.jumpmind.symmetric.model.OutgoingBatch;
import org.jumpmind.symmetric.route.IDataRouter;
import org.jumpmind.symmetric.route.IRouterContext;

/**
 * This is an {@link IDataRouter} that can be configured as an extension point. Instead of routing data to other nodes,
 * it publishes data to the {@link IPublisher} interface. The most common implementation of the {@link IPublisher} is
 * the {@link SimpleJmsPublisher}.
 *
 * 
 */
public class XmlPublisherDataRouter extends AbstractXmlPublisherExtensionPoint implements IDataRouter {

    public void completeBatch(IRouterContext context, OutgoingBatch batch) {
        if (doesXmlExistToPublish(context)) {
            finalizeXmlAndPublish(context);
        }
    }

    public Collection routeToNodes(IRouterContext context, DataMetaData dataMetaData, Set nodes,
            boolean initialLoad) {
        if (tableNamesToPublishAsGroup == null
                || tableNamesToPublishAsGroup.contains(dataMetaData.getData().getTableName())) {
            Element xml = getXmlFromCache(context, dataMetaData.getTriggerHistory().getParsedColumnNames(),
                    dataMetaData.getData().toParsedRowData(), dataMetaData.getTriggerHistory()
                            .getParsedPkColumnNames(), dataMetaData.getData().toParsedPkData());
            if (xml != null) {
                toXmlElement(dataMetaData.getData().getEventType(), xml, dataMetaData.getData().getTableName(),
                        dataMetaData.getTriggerHistory().getParsedColumnNames(), dataMetaData.getData()
                                .toParsedRowData(), dataMetaData.getTriggerHistory().getParsedPkColumnNames(),
                        dataMetaData.getData().toParsedPkData());
            }
        } else if (log.isDebugEnabled()) {
            log.debug("XmlPublisherTableNotFound", dataMetaData.getData().getTableName());
        }
        return Collections.emptySet();
    }

}