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Java > Open Source Codes > com > icl > saxon > pattern > NoNodeTest


1 package com.icl.saxon.pattern;
2 import com.icl.saxon.om.NodeInfo;
3 import com.icl.saxon.expr.XPathException;
4
5 /**
6   * NodeTest is an interface that enables a test of whether a node has a particular
7   * name and type. A NoNodeTest matches no nodes.
8   *
9   * @author <A HREF="mailto:mhkay@iclway.co.uk>Michael H. Kay</A>
10   */
11
12 public final class NoNodeTest extends NodeTest {
13     
14     private static NoNodeTest instance = new NoNodeTest();
15
16     /**
17     * Get a NoNodeTest instance
18     */
19     
20     public static NoNodeTest getInstance() {
21         return instance;
22     }
23
24     public final short getNodeType() {
25         return NodeInfo.NONE;
26     }
27
28     /**
29     * Test whether this node test is satisfied by a given node
30     */
31
32     public final boolean matches(NodeInfo node) {
33         return false;
34     }
35
36     /**
37     * Test whether this node test is satisfied by a given node
38     * @param nodeType The type of node to be matched
39     * @param fingerprint identifies the expanded name of the node to be matched
40     */
41
42     public boolean matches(short nodeType, int fingerprint) {
43         return false;
44     }
45
46     /**
47     * Determine the default priority of this node test when used on its own as a Pattern
48     */
49
50     public final double getDefaultPriority() {
51         return -0.5;
52     }
53
54 }
55
56 //
57 // The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
58 // you may not use this file except in compliance with the License. You may obtain a copy of the
59 // License at http://www.mozilla.org/MPL/
60 //
61 // Software distributed under the License is distributed on an "AS IS" basis,
62 // WITHOUT WARRANTY OF ANY KIND, either express or implied.
63 // See the License for the specific language governing rights and limitations under the License.
64 //
65 // The Original Code is: all this file.
66 //
67 // The Initial Developer of the Original Code is
68 // Michael Kay of International Computers Limited (mhkay@iclway.co.uk).
69 //
70 // Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
71 //
72 // Contributor(s): none.
73 //
74
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