Examples of org.jaxen.XPath.evaluate()

org.jaxen.XPath.evaluate()
Evaluate this XPath against a given context.
The context of evaluation my be a document, an element, or a set of elements.

If the expression evaluates to a single primitive (String, Number or Boolean) type, it is returned directly. Otherwise, the returned value is a List (a node-set, in the terms of the specification) of values.

When using this method, one must be careful to test the class of the returned objects, and of each of the composite members if a List is returned. If the returned members are XML entities, they will be the actual Document, Element or Attribute objects as defined by the concrete XML object-model implementation, directly from the context document. This does not return copies of anything, but merely returns references to entities within the source document.
@param The node, nodeset or Context object for evaluation. This value can be null @return The result of evaluating the XPath expressionagainst the supplied context.

        doc.appendChild(a);
        Text b = doc.createTextNode("ready");
        a.appendChild(b);
        
        XPath xpath = new DOMXPath("..");
        List result = (List) xpath.evaluate(b);
        assertEquals(1, result.size());
        assertEquals(a, result.get(0));
   
    }

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        Text b = doc.createTextNode("ready");
        a.appendChild(b);
        
        XPath xpath = new DOMXPath("..");
        try {
            xpath.evaluate("String");
            fail("Allowed String as context");
        }
        catch (ClassCastException ex) {
            // success
        }

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        XPath xpath = new DOMXPath( "name(//c/preceding::*[1])" );
        DocumentBuilder builder = factory.newDocumentBuilder();
    
        doc = builder.parse("xml/web2.xml");
        Object result = xpath.evaluate(doc);
        assertEquals("d", result);
    }
    


    public void testJaxen207()

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    Map<QName,Function> functions,
    Map<QName,Object> variables) throws XPathException {
    try {
      base = getElementWrapped(base);
      XPath xpath = getXPath(path, namespaces, functions, variables);
      return xpath.evaluate(base);
    } catch (JaxenException e) {
      throw new XPathException(e);
    }
  }

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                           Map<QName, Function> functions,
                           Map<QName, Object> variables) throws XPathException {
        try {
            base = getElementWrapped(base);
            XPath xpath = getXPath(path, namespaces, functions, variables);
            return xpath.evaluate(base);
        } catch (JaxenException e) {
            throw new XPathException(e);
        }
    }

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    Map<String,String> namespaces,
    Map<QName,Function> functions,
    Map<QName,Object> variables) throws XPathException {
    try {
      XPath xpath = getXPath(path, namespaces, functions, variables);
      return xpath.evaluate(base);
    } catch (JaxenException e) {
      throw new XPathException(e);
    }
  }

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    }


    public void testEqualsTwoNodesets() throws JaxenException
    {
        XPath xpath = new DOMXPath( "//b = //c" );
        Boolean result = (Boolean) xpath.evaluate( doc );
        assertTrue( result.booleanValue() );
    }


    public void testNotEqualsTwoNodesets() throws JaxenException
    {

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    }


    public void testNotEqualsTwoNodesets() throws JaxenException
    {
        XPath xpath = new DOMXPath( "//a != //b" );
        Boolean result = (Boolean) xpath.evaluate( doc );
        assertTrue( result.booleanValue() );
    }


    public void testEqualsStringNodeset() throws JaxenException
    {

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    }


    public void testEqualsStringNodeset() throws JaxenException
    {
        XPath xpath = new DOMXPath( "//b = 'blort'" );
        Boolean result = (Boolean) xpath.evaluate( doc );
        assertTrue(result.booleanValue());
    }


    public void testNotEqualsStringNodeset() throws JaxenException
    {

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    }


    public void testNotEqualsStringNodeset() throws JaxenException
    {
        XPath xpath = new DOMXPath( "//b != 'phooey'" );
        Boolean result = (Boolean) xpath.evaluate( doc );
        assertTrue(result.booleanValue());
    }


    public void testEqualsNumberNodeset() throws JaxenException
    {

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