org.eclipse.persistence.jpa.jpql.parser.EncapsulatedIdentificationVariableExpression Maven / Gradle / Ivy
/*
* Copyright (c) 2006, 2021 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 v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation
//
package org.eclipse.persistence.jpa.jpql.parser;
import org.eclipse.persistence.jpa.jpql.WordParser;
/**
* This {@link Expression} represents an identification variable that maps a {@link java.util.Map Map}
* property, either the key, the value or a {@link java.util.Map.Entry Map.Entry}).
*
* This is part of JPA 2.0.
*
* BNF: <identifier>(identification_variable)
*
* @version 2.5
* @since 2.3
* @author Pascal Filion
*/
public abstract class EncapsulatedIdentificationVariableExpression extends AbstractSingleEncapsulatedExpression {
/**
* Creates a new MapEntryIdentificationVariableExpression.
*
* @param parent The parent of this expression
* @param identifier The JPQL identifier that starts this expression
*/
protected EncapsulatedIdentificationVariableExpression(AbstractExpression parent, String identifier) {
super(parent, identifier);
}
@Override
public final String getEncapsulatedExpressionQueryBNFId() {
return IdentificationVariableBNF.ID;
}
@Override
public JPQLQueryBNF getQueryBNF() {
return getQueryBNF(GeneralIdentificationVariableBNF.ID);
}
@Override
protected AbstractExpression parse(WordParser wordParser, String queryBNFId, boolean tolerant) {
if (tolerant) {
return super.parse(wordParser, LiteralBNF.ID, tolerant);
}
IdentificationVariable expression = new IdentificationVariable(this, wordParser.word());
expression.parse(wordParser, tolerant);
return expression;
}
}