Mercurial > dive4elements > gnv-client
annotate geo-backend/src/main/java/de/intevation/gnv/geobackend/util/XMLUtils.java @ 1142:12abbf15f18a
dummy merge for repo head
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Fri, 28 Sep 2012 12:15:20 +0200 |
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1 /* |
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2 * Copyright (c) 2010 by Intevation GmbH |
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3 * |
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4 * This program is free software under the LGPL (>=v2.1) |
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5 * Read the file LGPL.txt coming with the software for details |
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6 * or visit http://www.gnu.org/licenses/ if it does not exist. |
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7 */ |
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8 |
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9 package de.intevation.gnv.geobackend.util; |
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10 |
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11 import javax.xml.namespace.NamespaceContext; |
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12 import javax.xml.namespace.QName; |
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13 |
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14 import javax.xml.xpath.XPath; |
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15 import javax.xml.xpath.XPathExpressionException; |
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16 import javax.xml.xpath.XPathFactory; |
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17 |
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18 import org.apache.log4j.Logger; |
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19 |
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20 |
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21 /** |
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22 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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23 */ |
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24 public final class XMLUtils { |
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25 |
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26 private static Logger logger = Logger.getLogger(XMLUtils.class); |
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27 |
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28 |
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29 private XMLUtils() { |
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30 } |
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31 |
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32 |
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33 public static Object xpath( |
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34 Object root, |
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35 String query, |
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36 QName returnType, |
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37 NamespaceContext namespaceContext |
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38 ) { |
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39 if (root == null) { |
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40 return null; |
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41 } |
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42 |
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43 try { |
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44 XPath xpath = newXPath(namespaceContext); |
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45 |
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46 if (xpath != null) { |
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47 return xpath.evaluate(query, root, returnType); |
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48 } |
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49 } |
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50 catch (XPathExpressionException xpee) { |
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51 logger.error(xpee.getLocalizedMessage(), xpee); |
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52 } |
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53 |
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54 return null; |
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55 } |
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56 |
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57 |
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58 public static XPath newXPath(NamespaceContext namespaceContext) { |
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59 XPathFactory factory = XPathFactory.newInstance(); |
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60 XPath xpath = factory.newXPath(); |
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61 |
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62 if (namespaceContext != null) { |
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63 xpath.setNamespaceContext(namespaceContext); |
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64 } |
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65 |
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66 return xpath; |
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67 } |
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68 } |
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69 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |