/*

  * This software is licensed under the Apache License, Version 2.0

  * (the "License") agreement; 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 net.admin4j.jdbc.driver;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 import net.admin4j.entity.ExecutionStack;

 import net.admin4j.timer.DataMeasure;

 import net.admin4j.timer.TaskTimer;

 import net.admin4j.vo.DataMeasurementSummaryVO;

 /**

  * Tracks SQL Statement timers that have been issued.

  * @author D. Ashmore

  * @since 1.0.1

  */

 public class SqlStatementTimerFactory {

     public static TaskTimer start(String sqlText, DriverContext driverContext, StackTraceElement[] executionStack) {

         return start(sqlText, driverContext, new ExecutionStack(executionStack));

     }

     public static TaskTimer start(String sqlText, DriverContext driverContext, ExecutionStack executionStack) {

         String key = deriveKey(sqlText, driverContext);

         SqlTaskTimer timer = SqlStatementTimerRegistry.findTaskTimer(key);

         if (timer != null)  {

             timer.start();

             return timer;

         }

         List<DataMeasure> list = new ArrayList<DataMeasure>();

         list.add(new SqlStatementSummaryDataMeasure(System.currentTimeMillis(), executionStack));

         timer = new SqlTaskTimer(key, list, driverContext, executionStack);

         SqlStatementTimerRegistry.register(timer);

         timer.start();

         return timer;

     }

     public static Map<String,Set<DataMeasurementSummaryVO>> getDataSummaryMap() {

         return SqlStatementTimerRegistry.getDataSummaryMap();

     }

     public void clearAll() {

         SqlStatementTimerRegistry.clearAll();

     }

     private static String deriveKey(String sqlText, DriverContext driverContext) {

         return driverContext + "-" + sqlText;

     }

 }