KickJava   Java API By Example, From Geeks To Geeks.

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


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 import oracle.toplink.essentials.expressions.*;
25 import oracle.toplink.essentials.queryframework.ReportQuery;
26
27 /**
28  * INTERNAL
29  * <p><b>Purpose</b>: Represent a SOME subquery.
30  */
31 public class SomeNode extends Node {
32
33     /**
34      * Return a new SomeNode.
35      */
36     public SomeNode() {
37         super();
38     }
39
40     /**
41      * INTERNAL
42      * Validate node and calculate its type.
43      */
44     public void validate(ParseTreeContext context) {
45         if (left != null) {
46             left.validate(context);
47             setType(left.getType());
48         }
49     }
50
51     /**
52      * INTERNAL
53      * Generate the TopLink expression for this node
54      */
55     public Expression generateExpression(GenerationContext context) {
56         SubqueryNode subqueryNode = (SubqueryNode)getLeft();
57         ReportQuery reportQuery = subqueryNode.getReportQuery(context);
58
59         Expression expr = context.getBaseExpression();
60         return expr.some(reportQuery);
61     }
62
63 }
64
65
Popular Tags