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| package org.qedeq.kernel.xml.parser; |
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| import java.io.BufferedReader; |
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| import java.io.File; |
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| import java.io.IOException; |
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| import java.io.InputStream; |
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| import java.io.InputStreamReader; |
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| import java.net.URL; |
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| |
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| import javax.xml.parsers.ParserConfigurationException; |
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| import javax.xml.parsers.SAXParser; |
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| import javax.xml.parsers.SAXParserFactory; |
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| |
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| import org.qedeq.kernel.common.SyntaxExceptionList; |
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| import org.qedeq.kernel.common.XmlFileExceptionList; |
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32 |
| import org.qedeq.kernel.trace.Trace; |
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33 |
| import org.xml.sax.InputSource; |
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| import org.xml.sax.SAXException; |
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| import org.xml.sax.SAXNotRecognizedException; |
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| import org.xml.sax.XMLReader; |
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| import org.xml.sax.helpers.DefaultHandler; |
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| public final class SaxParser { |
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| private static final String NAMESPACES_FEATURE_ID = "http://xml.org/sax/features/namespaces"; |
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| private static final String VALIDATION_FEATURE_ID = "http://xml.org/sax/features/validation"; |
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| private static final String SCHEMA_VALIDATION_FEATURE_ID |
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| = "http://apache.org/xml/features/validation/schema"; |
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| protected static final String SCHEMA_FULL_CHECKING_FEATURE_ID |
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| = "http://apache.org/xml/features/validation/schema-full-checking"; |
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| private SaxDefaultHandler handler; |
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| private XMLReader reader; |
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| private final DefaultHandler deflt; |
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| private SyntaxExceptionList exceptionList; |
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130
| public SaxParser(final SaxDefaultHandler handler) throws ParserConfigurationException,
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| SAXException { |
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130
| super();
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| this.handler = handler;
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| this.deflt = new DefaultHandler();
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130
| final String factoryImpl = System.getProperty("javax.xml.parsers.SAXParserFactory");
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90 |
130
| if (factoryImpl == null) {
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| System.setProperty("javax.xml.parsers.SAXParserFactory",
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| "org.apache.xerces.jaxp.SAXParserFactoryImpl"); |
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| } |
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130
| SAXParserFactory factory = SAXParserFactory.newInstance();
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| factory.setNamespaceAware(true);
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| factory.setValidating(true);
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| factory.setFeature(NAMESPACES_FEATURE_ID, true);
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| factory.setFeature(VALIDATION_FEATURE_ID, true);
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| try {
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| factory.setFeature(SCHEMA_VALIDATION_FEATURE_ID, true);
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| } catch (SAXNotRecognizedException e) { |
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0
| Trace.trace(this, "constructor", e);
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| |
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| } |
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130
| try {
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130
| factory.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, true);
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| } catch (SAXNotRecognizedException e) { |
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| Trace.trace(this, "constructor", e);
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| } |
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130
| final SAXParser parser = factory.newSAXParser();
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130
| if (!parser.isNamespaceAware()) {
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0
| throw new ParserConfigurationException(
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| "Current XML parser doesn't support namespaces."); |
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| } |
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130
| if (!parser.isValidating()) {
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0
| throw new ParserConfigurationException(
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| "Current XML parser doesn't support schema validation."); |
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| } |
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| reader = parser.getXMLReader();
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| reader.setEntityResolver(new SaxEntityResolver());
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126 |
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130
| reader.setFeature(NAMESPACES_FEATURE_ID, true);
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128 |
130
| reader.setFeature(VALIDATION_FEATURE_ID, true);
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129 |
130
| try {
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130 |
130
| reader.setFeature(SCHEMA_VALIDATION_FEATURE_ID, true);
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131 |
| } catch (SAXNotRecognizedException e) { |
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132 |
0
| Trace.trace(this, "constructor", e);
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133 |
| |
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| } |
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135 |
130
| try {
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136 |
130
| reader.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, true);
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137 |
| } catch (SAXNotRecognizedException e) { |
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138 |
0
| Trace.trace(this, "constructor", e);
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139 |
| |
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140 |
| } |
|
141 |
| } |
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149 |
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150 |
252
| private void parse(final URL url, final boolean validateOnly)
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| throws XmlFileExceptionList { |
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| final String method = "parse(URL, boolean)";
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153 |
252
| Trace.param(this, method, "url", url);
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154 |
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155 |
252
| InputStream in = null;
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156 |
252
| try {
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157 |
252
| in = url.openStream();
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158 |
| } catch (IOException e) { |
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159 |
0
| throw new DefaultXmlFileExceptionList(e);
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160 |
| } |
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161 |
252
| try {
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162 |
252
| parse(url, validateOnly, in);
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|
163 |
| } finally { |
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164 |
252
| if (in != null) {
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165 |
252
| try {
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166 |
252
| in.close();
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167 |
| } catch (Exception e) { |
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0
| Trace.trace(this, method, e);
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169 |
| } |
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170 |
| } |
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171 |
| } |
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172 |
| } |
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252
| private void parse(final URL url, final boolean validateOnly, final InputStream in)
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183 |
| throws XmlFileExceptionList { |
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184 |
252
| final String method = "parse(URL, boolean, InputStream)";
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185 |
252
| BufferedReader dis = null;
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186 |
252
| try {
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187 |
252
| dis = new BufferedReader(new InputStreamReader(in));
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188 |
252
| final InputSource input = new InputSource(dis);
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189 |
252
| exceptionList = new SyntaxExceptionList();
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190 |
252
| reader.setErrorHandler(new SaxErrorHandler(url, exceptionList));
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191 |
252
| if (validateOnly) {
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192 |
128
| reader.setContentHandler(deflt);
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193 |
128
| reader.parse(input);
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194 |
| } else { |
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195 |
124
| handler.setExceptionList(exceptionList);
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196 |
124
| reader.setContentHandler(handler);
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197 |
124
| handler.setUrl(url);
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198 |
124
| reader.parse(input);
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199 |
| } |
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200 |
| } catch (SAXException e) { |
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201 |
1
| final DefaultXmlFileExceptionList list
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202 |
| = new DefaultXmlFileExceptionList(exceptionList); |
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203 |
1
| if (exceptionList.size() <= 0) {
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204 |
0
| list.add(e);
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205 |
| } |
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206 |
1
| throw list;
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207 |
| } catch (IOException e) { |
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208 |
0
| final DefaultXmlFileExceptionList list
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209 |
| = new DefaultXmlFileExceptionList(exceptionList); |
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210 |
0
| list.add(e);
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211 |
0
| throw list;
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|
212 |
| } finally { |
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213 |
252
| if (dis != null) {
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214 |
252
| try {
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215 |
252
| dis.close();
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|
216 |
| } catch (Exception e) { |
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217 |
0
| Trace.trace(this, method, e);
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|
218 |
| } |
|
219 |
| } |
|
220 |
| } |
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221 |
251
| if (exceptionList.size() > 0) {
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222 |
3
| throw new DefaultXmlFileExceptionList(exceptionList);
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|
223 |
| } |
|
224 |
| } |
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225 |
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226 |
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227 |
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228 |
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229 |
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230 |
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231 |
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232 |
2
| public final void parse(final String fileName) throws XmlFileExceptionList {
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233 |
2
| final File file = new File(fileName);
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234 |
2
| parse(file.getAbsoluteFile());
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235 |
| } |
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236 |
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237 |
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238 |
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239 |
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240 |
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241 |
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242 |
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243 |
46
| public final void parse(final File file) throws XmlFileExceptionList {
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244 |
46
| final URL url;
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245 |
46
| try {
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246 |
46
| url = file.getAbsoluteFile().toURI().toURL();
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247 |
| } catch (IOException e) { |
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248 |
0
| final DefaultXmlFileExceptionList list
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|
249 |
| = new DefaultXmlFileExceptionList(); |
|
250 |
0
| list.add(e);
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251 |
0
| throw list;
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252 |
| } |
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253 |
46
| parse(url, true);
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254 |
42
| parse(url, false);
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255 |
| } |
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256 |
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257 |
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258 |
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259 |
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260 |
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261 |
| |
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262 |
| |
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263 |
82
| public final void parse(final URL url) throws XmlFileExceptionList {
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264 |
82
| parse(url, true);
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265 |
82
| parse(url, false);
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|
266 |
| } |
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267 |
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268 |
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269 |
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270 |
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271 |
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272 |
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273 |
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274 |
| |
|
275 |
0
| public void parse(final InputStream in, final boolean validateOnly)
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|
276 |
| throws XmlFileExceptionList { |
|
277 |
| |
|
278 |
| |
|
279 |
0
| parse(null, validateOnly, in);
|
|
280 |
| } |
|
281 |
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282 |
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283 |
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284 |
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285 |
| |
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286 |
| |
|
287 |
0
| public SyntaxExceptionList getExceptionList() {
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|
288 |
0
| return exceptionList;
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|
289 |
| } |
|
290 |
| |
|
291 |
| } |