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/*
*
* Derby - Class org.apache.derbyTesting.system.mailjdbc.tasks.Purge
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with this
* work for additional information regarding copyright ownership. The ASF
* licenses this file to You 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 org.apache.derbyTesting.system.mailjdbc.tasks;
/**
* This class is used to delete and mails which are older than a day
*/
import java.sql.Connection;
import org.apache.derbyTesting.system.mailjdbc.MailJdbc;
import org.apache.derbyTesting.system.mailjdbc.utils.DbTasks;
import org.apache.derbyTesting.system.mailjdbc.utils.LogFile;
public class Purge extends Thread {
//This thread behaves as a backend service which will mionitor the expiry
// date and size of the database
//and deletes them.
private DbTasks dbtasks = new DbTasks();
private Connection conn = null;
public Purge(String name) throws Exception{
//Sets the thread name
setName(name);
conn = DbTasks.getConnection("PURGE", "Purge");
}
public void run() {
try {
while (true) {
//Wait for some activity to happen before deleting the mails,
// so sleep for sometime
Thread.sleep(250000);
//Deleting mails
purgeFromInbox(conn);
//Gets the size of the database
DoDbSizeCheck();
//Try to avoid deadlock with Refresh thread delete statement
int sleep_time = (int) 200000;
Thread.sleep(sleep_time);
}
} catch (Exception e) {
MailJdbc.logAct.logMsg(LogFile.ERROR
+ "Error while sleeping the thread in Purge: "
+ e.getMessage());
e.printStackTrace();
}
}
public void purgeFromInbox(Connection conn) throws Exception{
dbtasks.deleteMailByExp(conn, this.getName());
}
public void DoDbSizeCheck() throws Exception{
dbtasks.checkDbSize(conn, this.getName());
}
}
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