/******************************************************************************* | |
* Copyright (c) 2006, 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.parser; | |
/** | |
* The <b>LOWER</b> function converts a string to lower case and it returns a string. | |
* <p> | |
* JPA 1.0, 2.0: | |
* <div nowrap><b>BNF:</b> <code>expression ::= LOWER(string_primary)</code> | |
* <p> | |
* JPA 2.1: | |
* <div nowrap><b>BNF:</b> <code>expression ::= LOWER(string_expression)</code> | |
* <p> | |
* | |
* @version 2.5 | |
* @since 2.3 | |
* @author Pascal Filion | |
*/ | |
public final class LowerExpression extends AbstractSingleEncapsulatedExpression { | |
/** | |
* Creates a new <code>LowerExpression</code>. | |
* | |
* @param parent The parent of this expression | |
*/ | |
public LowerExpression(AbstractExpression parent) { | |
super(parent, LOWER); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
public void accept(ExpressionVisitor visitor) { | |
visitor.visit(this); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
@Override | |
public String getEncapsulatedExpressionQueryBNFId() { | |
return InternalLowerExpressionBNF.ID; | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
public JPQLQueryBNF getQueryBNF() { | |
return getQueryBNF(FunctionsReturningStringsBNF.ID); | |
} | |
} |