| /* |
| * 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 ValueExpressionFactory} creates a general identification variable, which is either |
| * with the identifier <b>KEY</b> or <b>VALUE</b> and then checks the existence of a path expression. |
| * |
| * @see KeyExpressionFactory |
| * @see ValueExpressionFactory |
| * |
| * @version 2.4 |
| * @since 2.3 |
| * @author Pascal Filion |
| */ |
| public abstract class GeneralIdentificationExpressionFactory extends ExpressionFactory { |
| |
| /** |
| * Creates a new <code>GeneralIdentificationExpressionFactory</code>. |
| * |
| * @param id The unique identifier of this <code>ExpressionFactory</code> |
| * @param identifier The JPQL identifier handled by this factory |
| */ |
| public GeneralIdentificationExpressionFactory(String id, String identifier) { |
| super(id, identifier); |
| } |
| |
| /** |
| * Creates the actual expression this factory manages. |
| * |
| * @param parent The parent of this expression |
| * @return The {@link Expression} this factory manages |
| */ |
| protected abstract AbstractExpression buildExpression(AbstractExpression parent); |
| |
| @Override |
| protected final AbstractExpression buildExpression(AbstractExpression parent, |
| WordParser wordParser, |
| String word, |
| JPQLQueryBNF queryBNF, |
| AbstractExpression expression, |
| boolean tolerant) { |
| |
| expression = buildExpression(parent); |
| expression.parse(wordParser, tolerant); |
| |
| if (wordParser.character() == AbstractExpression.DOT) { |
| ExpressionFactory factory = getExpressionRegistry().getExpressionFactory(queryBNF.getFallbackExpressionFactoryId()); |
| expression = factory.buildExpression(parent, wordParser, wordParser.word(), queryBNF, expression, tolerant); |
| } |
| |
| return expression; |
| } |
| } |