foundation/org.eclipse.persistence.core/src/org/eclipse/persistence/config/ResultSetConcurrency.java

/*******************************************************************************
 * 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:
 *     James Sutherland - initial impl
 ******************************************************************************/  
package org.eclipse.persistence.config;

/**
 * JDBC ResultSet concurrency hint values.
 * 
 * The class contains all the valid values for QueryHints.RESULT_SET_CONCURRENCY query hint.
 * This can be used on ScrollableCursor queries to set the JDBC ResultSet concurrency.
 * 
 * JPA Query Hint Usage:
 * 
 * <p><code>query.setHint(QueryHints.RESULT_SET_CONCURRENCY, ResultSetConcurrency.ForwardOnly);</code>
 * <p>or 
 * <p><code>@QueryHint(name=QueryHints.RESULT_SET_CONCURRENCY, value=ResultSetConcurrency.ForwardOnly)</code>
 * 
 * <p>Hint values are case-insensitive.
 * "" could be used instead of default value ResultSetConcurrency.Updatable.
 * 
 * @see QueryHints#RESULT_SET_CONCURRENCY
 * @see org.eclipse.persistence.queries.ScrollableCursorPolicy#setResultSetConcurrency(int)
 * 
 * @author James Sutherland
 */
public class ResultSetConcurrency {
    /** The concurrency mode for a ResultSet object that may be updated. */
    public static final String  Updatable = "Updatable";

    /** The concurrency mode for a ResultSet object that may NOT be updated. */
    public static final String  ReadOnly = "ReadOnly";
    
    /**
     * The default type is Updatable.
     */
    public static final String DEFAULT = Updatable;
}