| /* |
| * 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; |
| |
| /** |
| * An implementation of an {@link Expression} that wraps a string. |
| * |
| * @version 2.4 |
| * @since 2.3 |
| * @author Pascal Filion |
| */ |
| public final class DefaultStringExpression extends AbstractExpression { |
| |
| /** |
| * The wrapped string value. |
| */ |
| private final String value; |
| |
| /** |
| * Creates a new <code>DefaultStringExpression</code>. |
| * |
| * @param owningExpression The {@link Expression} from where the text value comes |
| * @param value The string value to wrap with this {@link Expression} |
| */ |
| DefaultStringExpression(AbstractExpression owningExpression, String value) { |
| super(owningExpression); |
| this.value = value; |
| } |
| |
| @Override |
| public void accept(ExpressionVisitor visitor) { |
| // This object should not be visited |
| } |
| |
| @Override |
| public void acceptChildren(ExpressionVisitor visitor) { |
| // This object does not have children |
| } |
| |
| @Override |
| public JPQLQueryBNF getQueryBNF() { |
| return null; |
| } |
| |
| @Override |
| protected void parse(WordParser wordParser, boolean tolerant) { |
| // Nothing to parse |
| } |
| |
| @Override |
| public void populatePosition(QueryPosition queryPosition, int position) { |
| queryPosition.setExpression(getParent()); |
| } |
| |
| @Override |
| protected void toParsedText(StringBuilder writer, boolean actual) { |
| writer.append(value); |
| } |
| } |