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/*
Wotonomy: OpenStep design patterns for pure Java applications.
Copyright (C) 2001 Michael Powers
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see http://www.gnu.org
*/
package net.wotonomy.access;
import net.wotonomy.foundation.NSArray;
import net.wotonomy.foundation.NSMutableArray;
import net.wotonomy.foundation.NSNotificationCenter;
/**
*
* @author ezamudio@nasoft.com
* @author $Author: cgruber $
* @version $Revision: 894 $
*/
public abstract class EOAdaptorContext {
public static final String AdaptorContextBeginTransactionNotification = "AdaptorContextBeginTransaction";
public static final String AdaptorContextCommitTransactionNotification = "AdaptorContextCommitTransaction";
public static final String AdaptorContextRollbackTransactionNotification = "AdaptorContextRollbackTransaction";
protected EOAdaptor _adaptor;
protected NSMutableArray _channels = new NSMutableArray();
protected boolean _hasOpenTransaction;
public EOAdaptorContext(EOAdaptor adaptor) {
super();
_adaptor = adaptor;
}
public EOAdaptor adaptor() {
return _adaptor;
}
public abstract void beginTransaction();
public abstract void commitTransaction();
public abstract void rollbackTransaction();
public abstract EOAdaptorChannel createAdaptorChannel();
public abstract void handleDroppedConnection();
public NSArray channels() {
return new NSArray(_channels);
}
public boolean hasBusyChannels() {
for (int i = 0; i < _channels.count(); i++) {
EOAdaptorChannel chan = (EOAdaptorChannel)_channels.objectAtIndex(i);
if (chan.isFetchInProgress())
return true;
}
return false;
}
public boolean hasOpenChannels() {
for (int i = 0; i < _channels.count(); i++) {
EOAdaptorChannel chan = (EOAdaptorChannel)_channels.objectAtIndex(i);
if (chan.isOpen())
return true;
}
return false;
}
public boolean hasOpenTransaction() {
return _hasOpenTransaction;
}
public void transactionDidBegin() {
_hasOpenTransaction = true;
NSNotificationCenter.defaultCenter().postNotification(
AdaptorContextBeginTransactionNotification, this);
}
public void transactionDidCommit() {
_hasOpenTransaction = false;
NSNotificationCenter.defaultCenter().postNotification(
AdaptorContextCommitTransactionNotification, this);
}
public void transactionDidRollback() {
_hasOpenTransaction = false;
NSNotificationCenter.defaultCenter().postNotification(
AdaptorContextRollbackTransactionNotification, this);
}
}
/*
* $Log$
* Revision 1.2 2006/02/16 16:47:14 cgruber
* Move some classes in to "internal" packages and re-work imports, etc.
*
* Also use UnsupportedOperationExceptions where appropriate, instead of WotonomyExceptions.
*
* Revision 1.1 2006/02/16 13:19:57 cgruber
* Check in all sources in eclipse-friendly maven-enabled packages.
*
* Revision 1.1 2003/08/13 00:37:45 chochos
* an almost complete implementation of the abstract adaptor-layer classes
*
*/
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