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Java > Open Source Codes > org > netbeans > modules > xml > xpath > impl > XPathExpressionImpl


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.xml.xpath.impl;
21
22
23 import java.util.Collection JavaDoc;
24 import java.util.Collections JavaDoc;
25 import java.util.List JavaDoc;
26 import java.util.ArrayList JavaDoc;
27
28 import org.netbeans.modules.xml.xpath.XPathExpression;
29 import org.netbeans.modules.xml.xpath.visitor.XPathVisitable;
30 import org.netbeans.modules.xml.xpath.visitor.XPathVisitor;
31 import org.netbeans.modules.xml.xpath.visitor.impl.ExpressionWriter;
32
33
34 /**
35  * Default implementation of the XPathExpression interface.
36  *
37  * @author Enrico Lelina
38  * @version $Revision: 1.4 $
39  */
40 public abstract class XPathExpressionImpl
41     implements XPathExpression {
42     
43     
44     /**
45      * Calls the visitor.
46      * @param visitor the visitor
47      */
48     public void accept(XPathVisitor visitor) {
49         // do nothing -- must be subclassed
50 }
51     
52     
53     /**
54      * String representation.
55      * @return the string representation
56      */
57     public String JavaDoc getExpressionString() {
58         XPathVisitor visitor = new ExpressionWriter();
59         accept(visitor);
60         return ((ExpressionWriter) visitor).getString();
61     }
62     
63     public String JavaDoc toString() {
64         return getExpressionString();
65     }
66 }
67
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