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1
12 package mondrian.xmla;
13
14 import mondrian.olap.MondrianException;
15 import mondrian.util.Base64;
16 import org.apache.log4j.Logger;
17 import org.w3c.dom.*;
18 import org.xml.sax.InputSource  ;
19
20 import javax.xml.parsers.DocumentBuilder ;
21 import javax.xml.parsers.DocumentBuilderFactory ;
22 import javax.xml.transform.Transformer ;
23 import javax.xml.transform.TransformerFactory ;
24 import javax.xml.transform.dom.DOMSource ;
25 import javax.xml.transform.stream.StreamResult ;
26 import java.io.IOException ;
27 import java.io.InputStream ;
28 import java.io.StringReader ;
29 import java.io.StringWriter ;
30 import java.util.ArrayList ;
31 import java.util.List ;
32
33
39 public class XmlaUtil implements XmlaConstants {
40
41 private static final Logger LOGGER = Logger.getLogger(XmlaUtil.class);
42
56 private static final String [] CHAR_TABLE = new String [256];
57
58 static {
59 initCharTable(" \t\r\n(){}[]+/*%!,?");
60 }
61
62 private static void initCharTable(String charStr) {
63 char[] chars = charStr.toCharArray();
64 for (int i = 0; i < chars.length; i++) {
65 char c = chars[i];
66 CHAR_TABLE[c] = encodeChar(c);
67 }
68 }
69
70 private static String encodeChar(char c) {
71 StringBuilder buf = new StringBuilder ();
72 buf.append("_x");
73 String str = Integer.toHexString(c);
74 for (int i = 4 - str.length(); i > 0; i--) {
75 buf.append("0");
76 }
77 return buf.append(str).append("_").toString();
78 }
79
80
100 public static String encodeElementName(String name) {
101 StringBuilder buf = new StringBuilder ();
102 char[] nameChars = name.toCharArray();
103 for (int i = 0; i < nameChars.length; i++) {
104 char ch = nameChars[i];
105 String encodedStr = (ch >= CHAR_TABLE.length ? null : CHAR_TABLE[ch]);
106 if (encodedStr == null) {
107 buf.append(ch);
108 } else {
109 buf.append(encodedStr);
110 }
111 }
112 return buf.toString();
113 }
114
115
116 public static String element2Text(Element elem)
117 throws XmlaException {
118 StringWriter writer = new StringWriter ();
119 try {
120 TransformerFactory factory = TransformerFactory.newInstance();
121 Transformer transformer = factory.newTransformer();
122 transformer.transform(new DOMSource (elem), new StreamResult (writer));
123 } catch (Exception e) {
124 throw new XmlaException(
125 CLIENT_FAULT_FC,
126 USM_DOM_PARSE_CODE,
127 USM_DOM_PARSE_FAULT_FS,
128 e);
129 }
130 return writer.getBuffer().toString();
131 }
132
133 public static Element text2Element(String text)
134 throws XmlaException {
135 return _2Element(new InputSource (new StringReader (text)));
136 }
137
138 public static Element stream2Element(InputStream stream)
139 throws XmlaException {
140 return _2Element(new InputSource (stream));
141 }
142
143 private static Element _2Element(InputSource source)
144 throws XmlaException {
145 try {
146 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
147 factory.setIgnoringElementContentWhitespace(true);
148 factory.setIgnoringComments(true);
149 factory.setNamespaceAware(true);
150 DocumentBuilder builder = factory.newDocumentBuilder();
151 Document doc = builder.parse(source);
152 Element elem = doc.getDocumentElement();
153 return elem;
154
155 } catch (Exception e) {
156 throw new XmlaException(
157 CLIENT_FAULT_FC,
158 USM_DOM_PARSE_CODE,
159 USM_DOM_PARSE_FAULT_FS,
160 e);
161 }
162 }
163
164
167 public static Element firstChildElement(Element parent,
168 String ns,
169 String lname) {
170 if (LOGGER.isDebugEnabled()) {
171 StringBuilder buf = new StringBuilder (100);
172 buf.append("XmlaUtil.firstChildElement: ");
173 buf.append(" ns=\"");
174 buf.append(ns);
175 buf.append("\", lname=\"");
176 buf.append(lname);
177 buf.append("\"");
178 LOGGER.debug(buf.toString());
179 }
180 NodeList nlst = parent.getChildNodes();
181 for (int i = 0, nlen = nlst.getLength(); i < nlen; i++) {
182 Node n = nlst.item(i);
183 if (n instanceof Element) {
184 Element e = (Element) n;
185
186 if (LOGGER.isDebugEnabled()) {
187 StringBuilder buf = new StringBuilder (100);
188 buf.append("XmlaUtil.firstChildElement: ");
189 buf.append(" e.getNamespaceURI()=\"");
190 buf.append(e.getNamespaceURI());
191 buf.append("\", e.getLocalName()=\"");
192 buf.append(e.getLocalName());
193 buf.append("\"");
194 LOGGER.debug(buf.toString());
195 }
196
197 if ((ns == null || ns.equals(e.getNamespaceURI())) &&
198 (lname == null || lname.equals(e.getLocalName()))) {
199 return e;
200 }
201 }
202 }
203 return null;
204 }
205
206 public static Element[] filterChildElements(Element parent,
207 String ns,
208 String lname) {
209
210
223
224 List elems = new ArrayList ();
225 NodeList nlst = parent.getChildNodes();
226 for (int i = 0, nlen = nlst.getLength(); i < nlen; i++) {
227 Node n = nlst.item(i);
228 if (n instanceof Element) {
229 Element e = (Element) n;
230
231
243
244 if ((ns == null || ns.equals(e.getNamespaceURI())) &&
245 (lname == null || lname.equals(e.getLocalName()))) {
246 elems.add(e);
247 }
248 }
249 }
250 return (Element[]) elems.toArray(new Element[0]);
251 }
252
253 public static String textInElement(Element elem) {
254 StringBuilder buf = new StringBuilder (100);
255 elem.normalize();
256 NodeList nlst = elem.getChildNodes();
257 for (int i = 0, nlen = nlst.getLength(); i < nlen ; i++) {
258 Node n = nlst.item(i);
259 if (n instanceof Text) {
260 final String data = ((Text) n).getData();
261 buf.append(data);
262 }
263 }
264 return buf.toString();
265 }
266
267
271 public static Throwable rootThrowable(Throwable throwable) {
272 Throwable rootThrowable = throwable.getCause();
273 if (rootThrowable != null && rootThrowable instanceof MondrianException) {
274 return rootThrowable(rootThrowable);
275 }
276 return throwable;
277 }
278
279
290 public static String normalizeNumericString(String numericStr) {
291 int index = numericStr.indexOf('.');
292 if (index > 0) {
293 boolean found = false;
294 int p = numericStr.length();
295 char c = numericStr.charAt(p - 1);
296 while (c == '0') {
297 found = true;
298 p--;
299 c = numericStr.charAt(p - 1);
300 }
301 if (c == '.') {
302 p--;
303 }
304 if (found) {
305 return numericStr.substring(0, p);
306 }
307 }
308 return numericStr;
309 }
310 }
311
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