/******************************************************************************* | |
* 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: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.history; | |
import org.eclipse.persistence.history.*; | |
import org.eclipse.persistence.internal.expressions.*; | |
/** | |
* INTERNAL: | |
* <b>Purpose:</b> Represents a query level AS OF TIMESTAMP/SCN Oracle SQL clause. | |
* <p><b>Responsibilities:<b> | |
* <ul><li>Will be applied to the entire selection criteria, even if | |
* it is only set on the Query's expression builder. | |
* <li>Prints the AS OF clause before the alias name in the FROM clause. | |
* </ul> | |
* @since OracleAS TopLink 10<i>g</i> (10.0.3) | |
* @author Stephen McRitchie | |
*/ | |
public class UniversalAsOfClause extends AsOfClause { | |
public UniversalAsOfClause(AsOfClause value) { | |
super(value); | |
} | |
/** | |
* INTERNAL: | |
* Prints the as of clause for an expression inside of the FROM clause. | |
*/ | |
public void printSQL(ExpressionSQLPrinter printer) { | |
((AsOfClause)super.getValue()).printSQL(printer); | |
} | |
/** | |
* INTERNAL: | |
* Gets the actual as of clause represented by <code>this</code>. | |
*/ | |
public AsOfClause getAsOfClause() { | |
return (AsOfClause)super.getValue(); | |
} | |
public Object getValue() { | |
return getAsOfClause().getValue(); | |
} | |
public boolean isUniversal() { | |
return true; | |
} | |
public String printString() { | |
return "Universal" + getAsOfClause().toString(); | |
} | |
} |