/******************************************************************************* | |
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.sequencing; | |
import org.eclipse.persistence.sessions.Login; | |
import org.eclipse.persistence.internal.databaseaccess.Accessor; | |
import org.eclipse.persistence.internal.sessions.DatabaseSessionImpl; | |
import org.eclipse.persistence.exceptions.ConcurrencyException; | |
class DatabaseSessionConnectionHandler implements SequencingConnectionHandler { | |
DatabaseSessionConnectionHandler(DatabaseSessionImpl ownerSession, Login login) { | |
this.ownerSession = ownerSession; | |
this.login = login; | |
accessor = login.buildAccessor(); | |
} | |
DatabaseSessionImpl ownerSession; | |
Login login; | |
Accessor accessor; | |
boolean isBusy; | |
public void onConnect() { | |
if (!isConnected()) { | |
accessor.connect(login, ownerSession); | |
} | |
} | |
public boolean isConnected() { | |
return accessor.isConnected(); | |
} | |
public synchronized Accessor acquireAccessor() { | |
if (isBusy) { | |
try { | |
wait();// Notify is called when connection is released. | |
} catch (InterruptedException exception) { | |
throw ConcurrencyException.waitFailureOnSequencingForDatabaseSession(exception); | |
} | |
} | |
isBusy = true; | |
return accessor; | |
} | |
public synchronized void releaseAccessor(Accessor accessor) { | |
isBusy = false; | |
notify(); | |
} | |
public void onDisconnect() { | |
if (isConnected()) { | |
accessor.disconnect(ownerSession); | |
} | |
} | |
protected void finalize() throws Throwable { | |
onDisconnect(); | |
} | |
} |