Examples of javax.xml.xpath.XPathVariableResolver

javax.xml.xpath.XPathVariableResolver

XPathVariableResolver provides access to the set of user defined XPath variables.

The XPathVariableResolver and the XPath evaluator must adhere to a contract that cannot be directly enforced by the API. Although variables may be mutable, that is, an application may wish to evaluate the same XPath expression more than once with different variable values, in the course of evaluating any single XPath expression, a variable's value must be immutable.
@author Norman Walsh @author Jeff Suttor @version $Revision: 226183 $, $Date: 2005-04-08 06:39:14 -0400 (Fri, 08 Apr 2005) $ @since 1.5

     */
    public boolean booleanValueOf(Node n, String xpathString)
    throws JspTagException {
        
        staticInit();
        XPathVariableResolver jxvr = new JSTLXPathVariableResolver(pageContext);
        Node contextNode = adaptParamsForXalan(n, xpathString.trim(), jxvr);
        xpathString = modifiedXPath;
        
        XPath xpath = XPATH_FACTORY.newXPath();
        xpath.setNamespaceContext(jstlXPathNamespaceContext);

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     */
    public List selectNodes(Node n, String xpathString)  
        throws JspTagException {
        
        staticInit();
        XPathVariableResolver jxvr = new JSTLXPathVariableResolver(pageContext);
        Node contextNode = adaptParamsForXalan(n, xpathString.trim(), jxvr);
        xpathString = modifiedXPath;
        
        try {
            XPath xpath = XPATH_FACTORY.newXPath();

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    throws JspTagException {
        //p("selectSingleNode of XPathUtil = passed node:" +
        //   "xpathString => " + n + " : " + xpathString );
        
        staticInit();
        XPathVariableResolver jxvr = new JSTLXPathVariableResolver(pageContext);
        Node contextNode = adaptParamsForXalan(n, xpathString.trim(), jxvr);
        xpathString = modifiedXPath;
        
        try {
            XPath xpath = XPATH_FACTORY.newXPath();

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        super.init();
        xmlCatalog.setProject(getProject());
        
        xpathFactory = XPathFactory.newInstance();
        xpath = xpathFactory.newXPath();
        xpath.setXPathVariableResolver(new XPathVariableResolver() {
            public Object resolveVariable(QName variableName) {
                return getProject().getProperty(variableName.toString());
            }
        });
    }

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  private XPathExpression compileXPath(String str, final ScriptContext ctx) throws ScriptException {
    // JSR-223 requirement
    ctx.setAttribute("context", ctx, ScriptContext.ENGINE_SCOPE);
    try {
      XPath xpath = xpathFactory.newXPath();
      xpath.setXPathVariableResolver(new XPathVariableResolver() {


        public Object resolveVariable(QName qname) {
          return findVariable(qname, ctx);
        }
      });

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Related Classes of javax.xml.xpath.XPathVariableResolver

org.apache.taglibs.standard.tag.common.xml.XPathUtil

org.apache.tools.ant.taskdefs.XSLTProcess

org.jbpm.process.instance.impl.XPATHReturnValueEvaluator

org.jbpm.pvm.internal.script.XPathScriptEngine

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