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/*******************************************************************************
* Copyright (c) 2006, 2014 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 query BNF for a comparison expression.
*
* JPA 1.0:
*
BNF: comparison_expression ::= string_expression comparison_operator {string_expression | all_or_any_expression} |
* boolean_expression { = | {@literal <>} } {boolean_expression | all_or_any_expression} |
* enum_expression { = | {@literal <>} } {enum_expression | all_or_any_expression} |
* datetime_expression comparison_operator {datetime_expression | all_or_any_expression} |
* entity_expression { = | {@literal <>} } {entity_expression | all_or_any_expression} |
* arithmetic_expression comparison_operator {arithmetic_expression | all_or_any_expression}
*
* JPA 2.0, 2.1:
* BNF: comparison_expression ::= string_expression comparison_operator {string_expression | all_or_any_expression} |
* boolean_expression { = | {@literal <>} } {boolean_expression | all_or_any_expression} |
* enum_expression { = | {@literal <>} } {enum_expression | all_or_any_expression} |
* datetime_expression comparison_operator {datetime_expression | all_or_any_expression} |
* entity_expression { = | {@literal <>} } {entity_expression | all_or_any_expression} |
* arithmetic_expression comparison_operator {arithmetic_expression | all_or_any_expression} |
* entity_type_expression { = | {@literal <>} } entity_type_expression}
*
*
* @version 2.5
* @since 2.3
* @author Pascal Filion
*/
@SuppressWarnings("nls")
public final class ComparisonExpressionBNF extends JPQLQueryBNF {
/**
* The unique identifier of this BNF rule.
*/
public static final String ID = "comparison_expression";
/**
* Creates a new ComparisonExpressionBNF
.
*/
public ComparisonExpressionBNF() {
super(ID);
}
/**
* {@inheritDoc}
*/
@Override
protected void initialize() {
super.initialize();
setCompound(true);
setFallbackBNFId(ID);
setFallbackExpressionFactoryId(LiteralExpressionFactory.ID);
registerExpressionFactory(ComparisonExpressionFactory.ID);
registerChild(AllOrAnyExpressionBNF.ID);
registerChild(ArithmeticExpressionBNF.ID);
registerChild(BooleanExpressionBNF.ID);
registerChild(DatetimeExpressionBNF.ID);
registerChild(EntityExpressionBNF.ID);
registerChild(EnumExpressionBNF.ID);
registerChild(StringExpressionBNF.ID);
}
}