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Java > Open Source Codes > oracle > toplink > essentials > internal > parsing > LogicalOperatorNode


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the "License"). You may not use this file except
5  * in compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * glassfish/bootstrap/legal/CDDLv1.0.txt or
9  * https://glassfish.dev.java.net/public/CDDLv1.0.html.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * HEADER in each file and include the License file at
15  * glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
16  * add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your
18  * own identifying information: Portions Copyright [yyyy]
19  * [name of copyright owner]
20  */
21 // Copyright (c) 1998, 2005, Oracle. All rights reserved.
22 package oracle.toplink.essentials.internal.parsing;
23
24
25 /**
26  * INTERNAL
27  * <p><b>Purpose</b>: This is the superclass for the logical operators (NOT, AND, OR)
28  * <p><b>Responsibilities</b>:<ul>
29  * <li> Answer true if this node contains the passed node
30  * </ul>
31  * @author Jon Driscoll and Joel Lucuik
32  * @since TopLink 4.0
33  */
34 public class LogicalOperatorNode extends Node {
35
36     /**
37      * Return a new LogicalOperatorNode.
38      */
39     public LogicalOperatorNode() {
40         super();
41     }
42
43     /**
44      * INTERNAL
45      * Validate node and calculate its type.
46      */
47     public void validate(ParseTreeContext context) {
48         super.validate(context);
49         if ((left != null) && (right != null)) {
50             left.validateParameter(context, right.getType());
51             right.validateParameter(context, left.getType());
52         }
53         
54         TypeHelper typeHelper = context.getTypeHelper();
55         setType(typeHelper.getBooleanType());
56     }
57 }
58
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