Mercurial > dive4elements > gnv-client

annotate geo-backend/src/main/java/de/intevation/gnv/geobackend/util/XMLUtils.java @ 1127:ebeb56428409

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Added license headers and license file. geo-backend/trunk@1261 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 02 Nov 2010 17:52:22 +0000
parents 9d530f913729
children
rev   line source
1127
ebeb56428409 Added license headers and license file.
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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 :
http://dive4elements.wald.intevation.org