/*******************************************************************************
* Copyright (c) 2011, 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
*
******************************************************************************/
package org.eclipse.persistence.jpa.jpql.tools.model;
import org.eclipse.persistence.jpa.jpql.tools.model.query.KeywordExpressionStateObject;
import org.eclipse.persistence.jpa.jpql.tools.model.query.StateObject;
import org.eclipse.persistence.jpa.jpql.tools.model.query.UpdateItemStateObject;
import static org.eclipse.persistence.jpa.jpql.parser.Expression.*;
/**
* @version 2.4
* @since 2.4
* @author Pascal Filion
*/
public abstract class AbstractNewValueStateObjectBuilder extends AbstractScalarExpressionStateObjectBuilder<INewValueStateObjectBuilder>
implements INewValueStateObjectBuilder {
/**
* Creates a new <code>AbstractNewValueStateObjectBuilder</code>.
*
* @param parent The parent of the expression to build, which is only required when a JPQL
* fragment needs to be parsed
*/
protected AbstractNewValueStateObjectBuilder(UpdateItemStateObject parent) {
super(parent);
}
/**
* {@inheritDoc}
*/
public void commit() {
getParent().setNewValue(pop());
}
/**
* {@inheritDoc}
*/
@Override
protected UpdateItemStateObject getParent() {
return (UpdateItemStateObject) super.getParent();
}
/**
* {@inheritDoc}
*/
public INewValueStateObjectBuilder NULL() {
StateObject stateObject = new KeywordExpressionStateObject(getParent(), NULL);
add(stateObject);
return this;
}
/**
* {@inheritDoc}
*/
public INewValueStateObjectBuilder variable(String variable) {
StateObject stateObject = buildIdentificationVariable(variable);
add(stateObject);
return this;
}
}