Examples of org.jdom.xpath.XPath.selectSingleNode()

org.jdom.xpath.XPath.selectSingleNode()
Evaluates the wrapped XPath expression and returns the first entry in the list of selected nodes (or atomics). @param context the node to use as context for evaluatingthe XPath expression. @return the first selected item, which may be of types: {@link Element}, {@link Attribute}, {@link Text}, {@link CDATA}, {@link Comment}, {@link ProcessingInstruction}, Boolean, Double, String, or null if no item was selected. @throws JDOMException if the evaluation of the XPathexpression on the specified context failed.


        // parse the metadata file
        XPath xPath = XPath.newInstance( "//metadata/versioning" );
        Element rootElement = document.getRootElement();


        Element versioning = (Element) xPath.selectSingleNode( rootElement );
        Element el = (Element) xPath.newInstance( "./latest" ).selectSingleNode( versioning );
        assertEquals( "2.3-SNAPSHOT", el.getValue() );


        el = (Element) xPath.newInstance( "./lastUpdated" ).selectSingleNode( versioning );
        assertTrue( el.getValue().equals( "20070315032817" ) );

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        // parse the metadata file
        XPath xPath = XPath.newInstance( "//metadata/versioning" );
        Element rootElement = document.getRootElement();


        Element versioning = (Element) xPath.selectSingleNode( rootElement );
        Element el = (Element) xPath.newInstance( "./latest" ).selectSingleNode( versioning );
        assertEquals( "2.3", el.getValue() );


        el = (Element) xPath.newInstance( "./lastUpdated" ).selectSingleNode( versioning );
        assertFalse( el.getValue().equals( "20070315032817" ) );

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        // parse the metadata file
        XPath xPath = XPath.newInstance( "//metadata/versioning" );
        Element rootElement = document.getRootElement();
               
        Element versioning = (Element) xPath.selectSingleNode( rootElement );
        Element el = (Element) xPath.newInstance( "./latest" ).selectSingleNode( versioning );
        assertEquals( "2.3", el.getValue() );


        el = (Element) xPath.newInstance( "./lastUpdated" ).selectSingleNode( versioning );
        assertFalse( el.getValue().equals( "20070315032817" ) );

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        // parse the metadata file
        XPath xPath = XPath.newInstance( "//metadata/versioning" );
        Element rootElement = document.getRootElement();


        Element versioning = (Element) xPath.selectSingleNode( rootElement );
        Element el = (Element) xPath.newInstance( "./latest" ).selectSingleNode( versioning );
        assertEquals( "2.0.4-SNAPSHOT", el.getValue() );


        el = (Element) xPath.newInstance( "./lastUpdated" ).selectSingleNode( versioning );
        assertFalse( el.getValue().equals( "20070427033345" ) );

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        return builder.build(conn.getInputStream());
    }
    
    protected String getString(Element elem, String path) throws Exception {
        XPath xpath = XPath.newInstance(path);
        Element e = (Element)xpath.selectSingleNode(elem);
        return e!=null ? e.getText() : null;
    }
    
    protected int getInt(Element elem, String path) throws Exception {
        XPath xpath = XPath.newInstance(path);

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        return e!=null ? e.getText() : null;
    }
    
    protected int getInt(Element elem, String path) throws Exception {
        XPath xpath = XPath.newInstance(path);
        Element e = (Element)xpath.selectSingleNode(elem);
        return e!=null ? Integer.parseInt(e.getText()) : 0;
    }
}

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                Element elem = doc.getRootElement();                          
                String error = getString(elem,"/tapi/document/result/error");
                if ( error != null ) throw new Exception(error);
                if (mWeblog == null) {
                    XPath p = XPath.newInstance("/tapi/document/result/weblog");
                    Element w = (Element) p.selectSingleNode(doc);
                    mWeblog = new Weblog(w);
                }
                int count=0;
                Iterator iter = itemsPath.selectNodes(doc).iterator();
                while (iter.hasNext()) {

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    try {
      String selectString = "spring:property[@name='"+ name +"']";
      
      XPath xpath = XPath.newInstance(selectString);
      xpath.addNamespace("spring", springBeansNamespace.getURI());
      Object property = xpath.selectSingleNode(beanElem);
      
      if (property != null) {
        return (Element) property;
      }
    } catch (JDOMException e) {

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    try {
      String selectString = "//spring:bean[@class='"+ className +"']";
      
      XPath xpath = XPath.newInstance(selectString);
      xpath.addNamespace("spring", springBeansNamespace.getURI());
      Object beanNode = xpath.selectSingleNode(doc.getRootElement());
      
      return (Element) beanNode;
    } catch (JDOMException e) {
      throw new ArchMapperException("Error searching in the config file: "+ e.getMessage(), e);
    }

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            boolean addNsPrefix = !layer.getNamespace().equals(Namespace.NO_NAMESPACE);
            if (addNsPrefix) dummyNsPrefix = "x:";


            XPath mdUrl     = XPath.newInstance ("./" + dummyNsPrefix + "MetadataURL[@type='TC211' and " + dummyNsPrefix + "Format='text/xml']/" + dummyNsPrefix + "OnlineResource");
            if (addNsPrefix) mdUrl.addNamespace("x", layer.getNamespace().getURI());
            Element onLineSrc   = (Element) mdUrl.selectSingleNode (layer);


            // Check if metadataUrl in WMS 1.3.0 format
            if (onLineSrc == null) {
                mdUrl     = XPath.newInstance ("./" + dummyNsPrefix + "MetadataURL[@type='ISO19115:2003' and " + dummyNsPrefix + "Format='text/xml']/" + dummyNsPrefix + "OnlineResource");
                if (addNsPrefix) mdUrl.addNamespace("x", layer.getNamespace().getURI());

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