| /* |
| * 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 GroupByItemFactory} is responsible to return the right expression and to support |
| * invalid expression as well. |
| * |
| * @version 2.4 |
| * @since 2.3 |
| * @author Pascal Filion |
| */ |
| @SuppressWarnings("nls") |
| public final class GroupByItemFactory extends ExpressionFactory { |
| |
| /** |
| * The unique identifier of this {@link GroupByItemFactory}. |
| */ |
| public static final String ID = "groupby_item"; |
| |
| /** |
| * Creates a new <code>GroupByItemFactory</code>. |
| */ |
| public GroupByItemFactory() { |
| super(ID); |
| } |
| |
| @Override |
| protected AbstractExpression buildExpression(AbstractExpression parent, |
| WordParser wordParser, |
| String word, |
| JPQLQueryBNF queryBNF, |
| AbstractExpression expression, |
| boolean tolerant) { |
| |
| // StateFieldPathExpression |
| if (word.indexOf(AbstractExpression.DOT) > -1) { |
| expression = new StateFieldPathExpression(parent, word); |
| expression.parse(wordParser, tolerant); |
| return expression; |
| } |
| |
| ExpressionRegistry registry = getExpressionRegistry(); |
| |
| // When the tolerant mode is turned on, parse the invalid portion of the query |
| if (tolerant && registry.isIdentifier(word)) { |
| ExpressionFactory factory = registry.expressionFactoryForIdentifier(word); |
| |
| if (factory == null) { |
| return null; |
| } |
| |
| expression = factory.buildExpression(parent, wordParser, word, queryBNF, expression, tolerant); |
| |
| if (expression != null) { |
| return new BadExpression(parent, expression); |
| } |
| } |
| |
| // IdentificationVariable or any text |
| expression = new IdentificationVariable(parent, word); |
| expression.parse(wordParser, tolerant); |
| return expression; |
| } |
| } |