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1
16 package scriptella.configuration;
17
18 import org.w3c.dom.Document  ;
19 import org.w3c.dom.Element ;
20 import org.w3c.dom.Node ;
21 import org.w3c.dom.NodeList ;
22 import scriptella.expression.PropertiesSubstitutor;
23
24 import java.net.URL ;
25 import java.util.ArrayList ;
26 import java.util.List ;
27 import java.util.Set ;
28
29
30
36 public class XmlElement {
37 private Element element;
38 private URL documentUrl;
39 private PropertiesSubstitutor substitutor;
40
41 public XmlElement(Element element, URL documentUrl, PropertiesSubstitutor substitutor) {
42 this.element = element;
43 this.documentUrl = documentUrl;
44 this.substitutor = substitutor;
45 }
46
47 public XmlElement(Element element, XmlElement parent) {
48 this(element, parent.documentUrl, parent.substitutor);
49 }
50
51 public String getTagName() {
52 return element.getTagName();
53 }
54
55 public Element getElement() {
56 return element;
57 }
58
59 public URL getDocumentUrl() {
60 return documentUrl;
61 }
62
63 protected List <XmlElement> getChildren() {
64 return asList(element.getChildNodes());
65 }
66
67 public String getXPath() {
68 List <String > l = new ArrayList <String >();
69 Node cur = element;
70 StringBuilder tmp = new StringBuilder ();
71
72 while (!(cur instanceof Document )) {
73 int pos = 1;
74 Node sib = cur;
75 final String curTagName = ((Element ) cur).getTagName();
76
77 while (sib != null) {
78 sib = sib.getPreviousSibling();
79
80 if ((sib != null) && sib instanceof Element ) {
81 Element ee = (Element ) sib;
82
83 if (curTagName.equals(ee.getTagName())) {
84 pos++;
85 }
86 }
87 }
88
89 tmp.setLength(0);
90 tmp.append(curTagName);
91 cur = cur.getParentNode();
92 if (!(cur instanceof Document )) {
93 tmp.append('[');
94 tmp.append(pos);
95 tmp.append(']');
96 }
97 l.add(tmp.toString());
98
99 }
100
101 StringBuilder res = new StringBuilder (100);
102
103 for (int i = l.size() - 1; i >= 0; i--) {
104 res.append('/');
105 res.append(l.get(i));
106 }
107
108 return res.toString();
109 }
110
111 public List <XmlElement> getChildren(final String name) {
112 List <XmlElement> res = new ArrayList <XmlElement>();
113 Node node = element.getFirstChild();
114
115 while (node != null) {
116 if (node instanceof Element ) {
117 if (name.equals(((Element ) node).getTagName())) {
118 res.add(new XmlElement((Element ) node, this));
119 }
120 }
121
122 node = node.getNextSibling();
123 }
124
125 return res;
126 }
127
128 public List <XmlElement> getChildren(final Set <String > names) {
129 List <XmlElement> res = new ArrayList <XmlElement>();
130 Node node = element.getFirstChild();
131
132 while (node != null) {
133 if (node instanceof Element ) {
134 if (names.contains(((Element ) node).getTagName())) {
135 res.add(new XmlElement((Element ) node, this));
136 }
137 }
138
139 node = node.getNextSibling();
140 }
141
142 return res;
143 }
144
145 public XmlElement getChild(final String name) {
146 Node node = element.getFirstChild();
147
148 while (node != null) {
149 if (node instanceof Element ) {
150 if (name.equals(((Element ) node).getTagName())) {
151 return new XmlElement((Element ) node, this);
152 }
153 }
154
155 node = node.getNextSibling();
156 }
157
158 return null;
159 }
160
161 protected List <XmlElement> asList(final NodeList list) {
162 List <XmlElement> result = new ArrayList <XmlElement>();
163 Node node = element.getFirstChild();
164
165 while (node != null) {
166 if (node instanceof Element ) {
167 result.add(new XmlElement((Element ) node, this));
168 }
169
170 node = node.getNextSibling();
171 }
172
173 return result;
174 }
175
176
182 public String getAttribute(final String attribute) {
183 final String a = element.getAttribute(attribute);
184
185 return ((a != null) && (a.length() == 0)) ? null : expandProperties(a);
186 }
187
188
194 protected boolean getBooleanAttribute(final String attribute,
195 final boolean defaultValue) {
196 final String a = getAttribute(attribute);
197
198 if (a == null) {
199 return defaultValue;
200 }
201
202 if ("true".equalsIgnoreCase(a) || "1".equalsIgnoreCase(a) ||
203 "on".equalsIgnoreCase(a) || "yes".equalsIgnoreCase(a)) {
204 return true;
205 }
206
207 if ("false".equalsIgnoreCase(a) || "0".equalsIgnoreCase(a) ||
208 "off".equalsIgnoreCase(a) || "no".equalsIgnoreCase(a)) {
209 return false;
210 }
211
212 throw new ConfigurationException("Unrecognized value '" + a +
213 "' of boolean attribute " + attribute +
214 ". Valid values: yes/no, true/false, 1/0, on/off", this);
215 }
216
217
222 public String expandProperties(final String s) {
223 return substitutor.substitute(s);
224 }
225
226 }
227 |
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