| /* |
| * Copyright (c) 1998, 2020 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 v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // 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; |
| |
| @Override |
| public void onConnect() { |
| if (!isConnected()) { |
| accessor.connect(login, ownerSession); |
| } |
| } |
| |
| @Override |
| public boolean isConnected() { |
| return accessor.isConnected(); |
| } |
| |
| @Override |
| 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; |
| } |
| |
| @Override |
| public synchronized void releaseAccessor(Accessor accessor) { |
| isBusy = false; |
| notify(); |
| } |
| |
| @Override |
| public void onDisconnect() { |
| if (isConnected()) { |
| accessor.disconnect(ownerSession); |
| } |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| onDisconnect(); |
| } |
| } |