Mercurial > dive4elements > gnv-client

annotate geo-backend/src/main/java/de/intevation/gnv/geobackend/util/XMLUtils.java @ 1121:9d530f913729

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Added a helper class to handle xml related stuff. geo-backend/trunk@1148 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 03 Jun 2010 12:35:35 +0000
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children ebeb56428409
rev   line source
1121
9d530f913729 Added a helper class to handle xml related stuff.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 package de.intevation.gnv.geobackend.util;
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2
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3 import javax.xml.namespace.NamespaceContext;
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4 import javax.xml.namespace.QName;
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5
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6 import javax.xml.xpath.XPath;
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7 import javax.xml.xpath.XPathExpressionException;
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8 import javax.xml.xpath.XPathFactory;
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9
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10 import org.apache.log4j.Logger;
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11
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12
9d530f913729 Added a helper class to handle xml related stuff.
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13 /**
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14 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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15 */
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16 public final class XMLUtils {
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17
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18 private static Logger logger = Logger.getLogger(XMLUtils.class);
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19
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20
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21 private XMLUtils() {
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22 }
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23
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24
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25 public static Object xpath(
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26 Object root,
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27 String query,
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28 QName returnType,
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29 NamespaceContext namespaceContext
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30 ) {
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31 if (root == null) {
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32 return null;
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33 }
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34
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35 try {
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36 XPath xpath = newXPath(namespaceContext);
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37
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38 if (xpath != null) {
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39 return xpath.evaluate(query, root, returnType);
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40 }
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41 }
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42 catch (XPathExpressionException xpee) {
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43 logger.error(xpee.getLocalizedMessage(), xpee);
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44 }
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45
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46 return null;
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47 }
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48
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49
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50 public static XPath newXPath(NamespaceContext namespaceContext) {
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51 XPathFactory factory = XPathFactory.newInstance();
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52 XPath xpath = factory.newXPath();
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53
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54 if (namespaceContext != null) {
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55 xpath.setNamespaceContext(namespaceContext);
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56 }
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57
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58 return xpath;
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59 }
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60 }
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61 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org