dive4elements/river: flys-aft/src/main/java/de/intevation/utils/XML.java annotate

author	Sascha L. Teichmann <sascha.teichmann@intevation.de>
date	Tue, 13 Dec 2011 10:01:44 +0000
parents
children	88f801888d85

rev	line source
4070 d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	1 package de.intevation.utils;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	2
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	3 import java.io.FileInputStream;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	4 import java.io.BufferedInputStream;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	5 import java.io.File;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	6 import java.io.IOException;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	7 import java.io.InputStream;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	8
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	9 import org.w3c.dom.Document;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	10
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	11 import javax.xml.parsers.DocumentBuilderFactory;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	12 import javax.xml.parsers.ParserConfigurationException;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	13
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	14 import org.xml.sax.SAXException;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	15
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	16 import org.apache.log4j.Logger;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	17
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	18 import java.util.HashMap;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	19 import java.util.Map;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	20
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	21 import javax.xml.namespace.NamespaceContext;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	22 import javax.xml.namespace.QName;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	23
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	24 import javax.xml.xpath.XPath;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	25 import javax.xml.xpath.XPathExpressionException;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	26 import javax.xml.xpath.XPathFactory;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	27 import javax.xml.xpath.XPathVariableResolver;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	28
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	29 public final class XML
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	30 {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	31 /** Logger for this class. */
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	32 private static Logger log = Logger.getLogger(XML.class);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	33
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	34 public static class MapXPathVariableResolver
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	35 implements XPathVariableResolver
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	36 {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	37 protected Map<String, String> variables;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	38
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	39
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	40 public MapXPathVariableResolver() {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	41 this.variables = new HashMap<String, String>();
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	42 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	43
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	44
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	45 public MapXPathVariableResolver(Map<String, String> variables) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	46 this.variables = variables;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	47 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	48
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	49
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	50 public void addVariable(String name, String value) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	51 variables.put(name, value);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	52 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	53
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	54
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	55 @Override
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	56 public Object resolveVariable(QName variableName) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	57 String key = variableName.getLocalPart();
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	58 return variables.get(key);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	59 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	60 } // class MapXPathVariableResolver
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	61
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	62 private XML() {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	63 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	64
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	65 /**
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	66 * Loads a XML document namespace aware from a file
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	67 * @param file The file to load.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	68 * @return the XML document or null if something went wrong
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	69 * during loading.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	70 */
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	71 public static final Document parseDocument(File file) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	72 InputStream inputStream = null;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	73 try {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	74 inputStream = new BufferedInputStream(new FileInputStream(file));
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	75 return parseDocument(inputStream);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	76 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	77 catch (IOException ioe) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	78 log.error(ioe.getLocalizedMessage(), ioe);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	79 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	80 finally {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	81 if (inputStream != null) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	82 try { inputStream.close(); }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	83 catch (IOException ioe) {}
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	84 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	85 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	86 return null;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	87 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	88
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	89
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	90 public static final Document parseDocument(InputStream inputStream) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	91 return parseDocument(inputStream, Boolean.TRUE);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	92 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	93
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	94 public static final Document parseDocument(
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	95 InputStream inputStream,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	96 Boolean namespaceAware
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	97 ) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	98 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	99
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	100 if (namespaceAware != null) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	101 factory.setNamespaceAware(namespaceAware.booleanValue());
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	102 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	103
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	104 try {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	105 return factory.newDocumentBuilder().parse(inputStream);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	106 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	107 catch (ParserConfigurationException pce) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	108 log.error(pce.getLocalizedMessage(), pce);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	109 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	110 catch (SAXException se) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	111 log.error(se.getLocalizedMessage(), se);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	112 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	113 catch (IOException ioe) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	114 log.error(ioe.getLocalizedMessage(), ioe);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	115 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	116 return null;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	117 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	118
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	119
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	120 /**
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	121 * Creates a new XPath without a namespace context.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	122 * @return the new XPath.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	123 */
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	124 public static final XPath newXPath() {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	125 return newXPath(null, null);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	126 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	127
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	128 /**
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	129 * Creates a new XPath with a given namespace context.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	130 * @param namespaceContext The namespace context to be used or null
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	131 * if none should be used.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	132 * @return The new XPath
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	133 */
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	134 public static final XPath newXPath(
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	135 NamespaceContext namespaceContext,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	136 XPathVariableResolver resolver)
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	137 {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	138 XPathFactory factory = XPathFactory.newInstance();
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	139 XPath xpath = factory.newXPath();
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	140 if (namespaceContext != null) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	141 xpath.setNamespaceContext(namespaceContext);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	142 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	143
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	144 if (resolver != null) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	145 xpath.setXPathVariableResolver(resolver);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	146 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	147 return xpath;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	148 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	149
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	150 /**
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	151 * Evaluates an XPath query on a given object and returns the result
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	152 * as a given type. No namespace context is used.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	153 * @param root The object which is used as the root of the tree to
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	154 * be searched in.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	155 * @param query The XPath query
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	156 * @param returnTyp The type of the result.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	157 * @return The result of type 'returnTyp' or null if something
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	158 * went wrong during XPath evaluation.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	159 */
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	160 public static final Object xpath(
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	161 Object root,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	162 String query,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	163 QName returnTyp
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	164 ) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	165 return xpath(root, query, returnTyp, null);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	166 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	167
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	168 /**
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	169 * Evaluates an XPath query on a given object and returns the result
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	170 * as a given type. Optionally a namespace context is used.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	171 * @param root The object which is used as the root of the tree to
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	172 * be searched in.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	173 * @param query The XPath query
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	174 * @param returnType The type of the result.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	175 * @param namespaceContext The namespace context to be used or null
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	176 * if none should be used.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	177 * @return The result of type 'returnTyp' or null if something
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	178 * went wrong during XPath evaluation.
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	179 */
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	180 public static final Object xpath(
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	181 Object root,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	182 String query,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	183 QName returnType,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	184 NamespaceContext namespaceContext
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	185 ) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	186 return xpath(root, query, returnType, namespaceContext, null);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	187 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	188
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	189 public static final Object xpath(
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	190 Object root,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	191 String query,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	192 QName returnType,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	193 NamespaceContext namespaceContext,
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	194 Map<String, String> variables)
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	195 {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	196 if (root == null) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	197 return null;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	198 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	199
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	200 XPathVariableResolver resolver = variables != null
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	201 ? new MapXPathVariableResolver(variables)
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	202 : null;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	203
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	204 try {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	205 XPath xpath = newXPath(namespaceContext, resolver);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	206 if (xpath != null) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	207 return xpath.evaluate(query, root, returnType);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	208 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	209 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	210 catch (XPathExpressionException xpee) {
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	211 log.error(xpee.getLocalizedMessage(), xpee);
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	212 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	213
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	214 return null;
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	215 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	216 }
d09adfa90942 Added XML/XPath support. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	217 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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d09adfa90942 Added XML/XPath support.