1 /*
2 * Copyright 2005 John G. Wilson
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 */
17
18 package groovy.util.slurpersupport;
19
20 import groovy.lang.Closure;
21 import groovy.lang.GroovyObject;
22 import groovy.lang.GroovyRuntimeException;
23
24 import java.io.IOException;
25 import java.io.Writer;
26 import java.util.Iterator;
27 import java.util.Map;
28
29 /***
30 * @author John Wilson
31 *
32 */
33
34 public class NoChildren extends GPathResult {
35 /***
36 * @param parent
37 * @param name
38 * @param namespacePrefix
39 */
40 public NoChildren(final GPathResult parent, final String name, final Map namespaceTagHints) {
41 super(parent, name, "*", namespaceTagHints);
42 }
43
44 /* (non-Javadoc)
45 * @see org.codehaus.groovy.sandbox.util.slurpersupport.GPathResult#size()
46 */
47 public int size() {
48 return 0;
49 }
50
51 /* (non-Javadoc)
52 * @see org.codehaus.groovy.sandbox.util.slurpersupport.GPathResult#text()
53 */
54 public String text() {
55 return "";
56 }
57
58 /* (non-Javadoc)
59 * @see org.codehaus.groovy.sandbox.util.slurpersupport.GPathResult#parents()
60 */
61 public GPathResult parents() {
62 // TODO Auto-generated method stub
63 throw new GroovyRuntimeException("parents() not implemented yet");
64 }
65
66 /* (non-Javadoc)
67 * @see org.codehaus.groovy.sandbox.util.slurpersupport.GPathResult#childNodes()
68 */
69 public Iterator childNodes() {
70 return iterator();
71 }
72
73 /* (non-Javadoc)
74 * @see org.codehaus.groovy.sandbox.util.slurpersupport.GPathResult#iterator()
75 */
76 public Iterator iterator() {
77 return new Iterator() {
78 public boolean hasNext() {
79 return false;
80 }
81
82 public Object next() {
83 return null;
84 }
85
86 public void remove() {
87 throw new UnsupportedOperationException();
88 }
89 };
90 }
91
92 /* (non-Javadoc)
93 * @see org.codehaus.groovy.sandbox.util.slurpersupport.GPathResult#find(groovy.lang.Closure)
94 */
95 public GPathResult find(final Closure closure) {
96 return this;
97 }
98
99 /* (non-Javadoc)
100 * @see org.codehaus.groovy.sandbox.util.slurpersupport.GPathResult#findAll(groovy.lang.Closure)
101 */
102 public GPathResult findAll(final Closure closure) {
103 return this;
104 }
105
106 /* (non-Javadoc)
107 * @see org.codehaus.groovy.sandbox.util.slurpersupport.GPathResult#nodeIterator()
108 */
109 public Iterator nodeIterator() {
110 return iterator();
111 }
112
113 /* (non-Javadoc)
114 * @see groovy.lang.Writable#writeTo(java.io.Writer)
115 */
116 public Writer writeTo(final Writer out) throws IOException {
117 return out;
118 }
119
120 /* (non-Javadoc)
121 * @see org.codehaus.groovy.sandbox.markup.Buildable#build(groovy.lang.GroovyObject)
122 */
123 public void build(final GroovyObject builder) {
124 }
125
126 }