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package com.sun.enterprise.ee.synchronization;
import java.util.List;
import java.util.ArrayList;
import com.sun.enterprise.ee.admin.servermgmt.DASPropertyReader;
import com.sun.enterprise.ee.synchronization.tx.Transaction;
import com.sun.enterprise.ee.synchronization.cleaner.Cleaner;
import com.sun.enterprise.ee.synchronization.cleaner.GroupRequestCleaner;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.ee.EELogDomains;
/**
* Executes a group of synchronization requests in one thread.
*
* @author Nazrul Islam
*/
public abstract class BaseGroupRequestMediator implements Runnable {
/**
* Executes all the requests in a sequence.
*/
public void run() {
try {
for (int i=0; i<_mediators.length; i++) {
_mediators[i].execute();
}
_tx.voteCommit();
_logger.log(Level.FINE, "synchronization.vote_commit");
} catch (Exception e) {
_tx.voteRollback();
_logger.log(Level.FINE, "synchronization.vote_rollback");
this._exception = e;
this._isException = true;
} finally {
for (int i=0; i<_mediators.length; i++) {
_mediators[i].commit();
}
_logger.log(Level.FINE, "synchronization.tran_commit");
// cleans the dirs if synchronization is successful
if (_tx.isCommited()) {
Cleaner ac = new GroupRequestCleaner(_mediators);
ac.gc();
}
}
}
/**
* Returns true if there is an exception.
*
* @return true if an error occurred
*/
public boolean isException() {
return this._isException;
}
/**
* Returns the exception that orrurred during execution or null.
*
* @return the exception during the synchronization or null
*/
public Exception getException() {
return this._exception;
}
// ---- VARIABLE(S) - PRIVATE -------------------------------------
protected BaseRequestMediator[] _mediators = null;
protected Exception _exception = null;
protected boolean _isException = false;
protected Transaction _tx = null;
protected final static Logger _logger =
Logger.getLogger(EELogDomains.SYNCHRONIZATION_LOGGER);
}