DB2Dialect.java

/*
 * #%L
 * Service Activity Monitoring :: Server
 * %%
 * Copyright (C) 2011 - 2012 Talend Inc.
 * %%
 * 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.
 * #L%
 */
package org.talend.esb.sam.server.persistence.dialects;


/**
 * Class to encapsulate difference between databases.
 *
 * @author zubairov
 */
public class DB2Dialect extends AbstractDatabaseDialect {

    private static final String QUERY =
       "SELECT MI_FLOW_ID, EI_TIMESTAMP, EI_EVENT_TYPE, MI_PORT_TYPE, MI_OPERATION_NAME, MI_TRANSPORT_TYPE, ORIG_HOSTNAME,  ORIG_IP " + 
       "FROM EVENTS " +
       "WHERE MI_FLOW_ID IN " +
    	  "(SELECT MI_FLOW_ID FROM " +
    	     "(SELECT MI_FLOW_ID, MAX(EI_TIMESTAMP) AS MTSTAMP FROM EVENTS " + 
    	     "WHERE (MI_FLOW_ID IS NOT NULL) %%FILTER%% GROUP BY MI_FLOW_ID " +
    	     "ORDER BY MAX(EI_TIMESTAMP) DESC LIMIT (%%OFFSET%% + %%LIMIT%%)) " +
          "ORDER BY MTSTAMP LIMIT %%LIMIT%%) " +
       "ORDER BY EI_TIMESTAMP DESC";  
    
    /* (non-Javadoc)
     * @see org.talend.esb.sam.server.persistence.dialects.AbstractDatabaseDialect#getQuery()
     */
    @Override
    String getQuery() {
        return QUERY;
    }

	@Override
	public String getName() {
		return "DB2Dialect";
	}

}