| /* |
| * Copyright (c) 1998, 2020 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 from Oracle TopLink |
| package org.eclipse.persistence.internal.jpa.parsing; |
| |
| |
| /** |
| * INTERNAL |
| * <p><b>Purpose</b>: Represent a Sort Direction for an |
| * Order By Item |
| * <p><b>Responsibilities</b>:<ul> |
| * <li> Apply itself to a query correctly |
| * |
| * This node represents either an ASC or DESC encountered on the input stream |
| * e.g SELECT ... FROM ... WHERE ... ORDER BY emp.salary ASC |
| * </ul> |
| * @author Jon Driscoll |
| * @since TopLink 5.0 |
| */ |
| import org.eclipse.persistence.expressions.Expression; |
| import org.eclipse.persistence.expressions.ExpressionOperator; |
| |
| public class SortDirectionNode extends Node { |
| private int sortDirection = ExpressionOperator.Ascending; |
| |
| /** |
| * INTERNAL |
| * Return the parent expression unmodified |
| */ |
| @Override |
| public Expression addToExpression(Expression parentExpression, GenerationContext context) { |
| return parentExpression.getFunction(getSortDirection()); |
| } |
| |
| public void useAscending() { |
| setSortDirection(ExpressionOperator.Ascending); |
| } |
| |
| public void useDescending() { |
| setSortDirection(ExpressionOperator.Descending); |
| } |
| |
| // Accessors |
| public int getSortDirection() { |
| return sortDirection; |
| } |
| |
| public void setSortDirection(int sortDirection) { |
| this.sortDirection = sortDirection; |
| } |
| } |