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/*
* Copyright (c) 2010, 2018 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:
// James Sutherland - initial API and implementation
package org.eclipse.persistence.platform.database.oracle.ucp;
import java.sql.SQLException;
import javax.sql.DataSource;
import oracle.ucp.jdbc.PoolDataSource;
import oracle.ucp.jdbc.oracle.DataBasedConnectionAffinityCallback;
import org.eclipse.persistence.exceptions.DatabaseException;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.platform.database.partitioning.DataPartitioningCallback;
import org.eclipse.persistence.sessions.Session;
/**
* PUBLIC:
* Integrates with Oracle Universal ConnectionPool's data affinity support.
*
* @see org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy
* @author James Sutherland
* @since EclipseLink 2.3
*/
public class UCPDataPartitioningCallback implements DataPartitioningCallback, DataBasedConnectionAffinityCallback {
/** The id is stored in a thread local. */
protected ThreadLocal partitionId = new ThreadLocal();
public void register(DataSource datSource, Session session) {
try {
((PoolDataSource)datSource).registerConnectionAffinityCallback(this);
} catch (SQLException exception) {
throw DatabaseException.sqlException(exception, (AbstractSession)session, false);
}
}
/**
* Set the partition id for this thread.
*/
public void setPartitionId(int id) {
this.partitionId.set(id);
}
public int getPartitionId() {
Integer id = (Integer)this.partitionId.get();
if (id == null) {
return 0;
}
return id;
}
public boolean setDataKey(Object key) {
// Not used.
return true;
}
public boolean setConnectionAffinityContext(Object context) {
// Not used for data affinity.
return false;
}
public void setAffinityPolicy(AffinityPolicy policy) {
// Not used.
}
public Object getConnectionAffinityContext() {
// Not used for data affinity.
return null;
}
public AffinityPolicy getAffinityPolicy() {
return AffinityPolicy.DATA_BASED_AFFINITY;
}
}
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