oracle.toplink.essentials.internal.sequencing.DatabaseSessionConnectionHandler Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License"). You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* glassfish/bootstrap/legal/CDDLv1.0.txt or
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* HEADER in each file and include the License file at
* glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
* add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your
* own identifying information: Portions Copyright [yyyy]
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// Copyright (c) 1998, 2007, Oracle. All rights reserved.
package oracle.toplink.essentials.internal.sequencing;
import oracle.toplink.essentials.sessions.Login;
import oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl;
import oracle.toplink.essentials.internal.databaseaccess.Accessor;
import oracle.toplink.essentials.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();
}
}