SqlServerDialect.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 pvasilchenko
 */
public class SqlServerDialect 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 top %%LIMIT%% [MI_FLOW_ID] from " + 
    	"(select top (%%LIMIT%% + %%OFFSET%%) [MI_FLOW_ID], MAX([EI_TIMESTAMP]) as ts " + 
    	"from [EVENTS] WHERE (MI_FLOW_ID is not null) %%FILTER%% " +  
    	"group by [MI_FLOW_ID] " +
    	"order by MAX([EI_TIMESTAMP]) desc)as subq " + 
    	"order by ts)  " +
    	"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 "sqlServerDialect";
	}


}