org.eclipse.persistence.internal.sequencing.DatabaseSessionConnectionHandler Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation
Show all versions of eclipselink Show documentation
EclipseLink build based upon Git transaction 180e602
/*******************************************************************************
* 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();
}
}