| /* |
| * Copyright (c) 2011, 2019 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 (Oracle) - initial API and implementation |
| package org.eclipse.persistence.descriptors.partitioning; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.persistence.internal.databaseaccess.Accessor; |
| import org.eclipse.persistence.internal.sessions.AbstractRecord; |
| import org.eclipse.persistence.internal.sessions.AbstractSession; |
| import org.eclipse.persistence.queries.DatabaseQuery; |
| |
| /** |
| * PUBLIC: |
| * PinnedPartitionPolicy pins requests to a single connection pool. |
| * @author James Sutherland |
| * @since EclipseLink 2.2 |
| */ |
| public class PinnedPartitioningPolicy extends PartitioningPolicy { |
| |
| protected String connectionPool; |
| |
| public PinnedPartitioningPolicy() { |
| super(); |
| } |
| |
| public PinnedPartitioningPolicy(String pool) { |
| this(); |
| this.connectionPool = pool; |
| } |
| |
| /** |
| * PUBLIC: |
| * Return the connection pool to pin queries to. |
| */ |
| public String getConnectionPool() { |
| return connectionPool; |
| } |
| |
| /** |
| * PUBLIC: |
| * Set the connection pool to pin queries to. |
| */ |
| public void setConnectionPool(String connectionPool) { |
| this.connectionPool = connectionPool; |
| } |
| |
| /** |
| * INTERNAL: |
| * Get a connection from each pool. |
| */ |
| @Override |
| public List<Accessor> getConnectionsForQuery(AbstractSession session, DatabaseQuery query, AbstractRecord arguments) { |
| if (session.getPlatform().hasPartitioningCallback()) { |
| // UCP support. |
| session.getPlatform().getPartitioningCallback().setPartitionId(this.connectionPool.hashCode()); |
| return null; |
| } |
| List<Accessor> accessors = new ArrayList<>(1); |
| accessors.add(getAccessor(this.connectionPool, session, query, false)); |
| return accessors; |
| } |
| |
| } |