Examples of nu.xom.Element

nu.xom.Element
This class represents an XML element. Each element has the following properties:
- Local name
- Prefix (which may be null or the empty string)
- Namespace URI (which may be null or the empty string)
- A list of attributes
- A list of namespace declarations for this element (not including those inherited from its parent)
- A list of child nodes
@author Elliotte Rusty Harold @version 1.2.7

    }
    


    public void testWhiteSpaceIsAllowedBetweenTokens() {
        
        Element root = new Element("root", "http://www.example.org");
        Document doc = new Document(root);
        root.appendChild(new Element("child"));
        root.appendChild("test");
        root.addAttribute(new Attribute("test", "test"));
        
        Nodes nodes = doc.query("// a");
        assertEquals(0, nodes.size());
        
    }

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        String base = "http://svn.jaxen.codehaus.org/browse/~raw,r=trunk/jaxen/trunk/jaxen/";
        Builder builder = new Builder();
        Document testDoc = builder.build(base + "xml/test/tests.xml");
        Elements documents = testDoc.getRootElement().getChildElements("document");
        for (int i = 0; i < documents.size(); i++) {
            Element documentElement = documents.get(i);
            String url = documentElement.getAttributeValue("url");
            Document source = builder.build(
              "http://svn.jaxen.codehaus.org/browse/~raw,r=trunk/jaxen/trunk/jaxen/" 
              + url);
            Elements contextElements = documentElement.getChildElements("context");
            for (int j = 0; j < contextElements.size(); j++) {
                Element contextElement = contextElements.get(j);
                    
                // skip tests that use variables
                // because XOM doesn't support variables in 
                // XPath expressions
                if (queryUsesVars(contextElement)) continue;
                
                String xpath = contextElement.getAttributeValue("select");
                XPathContext namespaces = getXPathContext(contextElement);
                Node context = source.query(xpath).get(0);
                
                // process counts
                Elements tests = contextElement.getChildElements("test");
                for (int k = 0; k < tests.size(); k++) {
                    Element test = tests.get(k);
                    
                    String select = test.getAttributeValue("select");
                    Attribute countAttribute = test.getAttribute("count");
                    int count = -1;
                    if (countAttribute != null) {
                        count = Integer.parseInt(countAttribute.getValue());
                    }
                    
                    boolean exceptional = false;
                    String exception = test.getAttributeValue("exception");
                    if ("true".equals(exception)) {
                        exceptional = true;
                    }
                    
                    if (exceptional) {
                        try {
                            context.query(select, namespaces);
                            fail("Evaluated " + select);
                        }
                        catch (XPathException success) {
                            assertNotNull(success.getMessage());
                        }
                    }
                    else {
                        try {
                            Nodes results = context.query(select, namespaces);
                            if (count != -1) {
                                assertEquals(select, count, results.size());
                            }
                            Elements valueOfs = test.getChildElements("valueOf");
                            for (int v = 0; v < valueOfs.size(); v++) {
                                Element vo = valueOfs.get(v);
                                checkValueOf(results.get(0), vo, namespaces);
                            }
                        }
                        catch (XPathException ex) {
                            if (ex.getMessage().equalsIgnoreCase("XPath error: No such function document")

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    }
    
    
    public void testTextChildInPredicate() {
        
        Element item = new Element("item");
        Document doc = new Document(item);
        Element name = new Element("name");
        name.appendChild("a");
        item.appendChild(name);
        Element value = new Element("value");
        value.appendChild("b");
        item.appendChild(value);
        Nodes result = doc.query("/item[name/text()='a']/value");
        assertEquals(1, result.size());
        assertEquals("b", result.get(0).getValue());

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    }


    
    public void testSimpleTextChildInPredicate() {
        
        Element item = new Element("item");
        Document doc = new Document(item);
        item.appendChild("a");
        Nodes result = doc.query("/item[text()='a']");
        assertEquals(1, result.size());
        
    }

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    }
    
    
    public void testPrecedingAxisInDocumentOrder() {
    
        Element root = new Element("root");
        new Document(root);
        
        Element a = new Element("a");
        root.appendChild(a);
        Element b = new Element("b");
        root.appendChild(b);
        Element c = new Element("c");
        a.appendChild(c);
        
        Nodes result = b.query("preceding::*");
        assertEquals(2, result.size());
        assertEquals(a, result.get(0));

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    }
    
    
    public void testAttributeWithUnderscore() {
     
        Element a = new Element("a");
        Attribute foo = new Attribute("_foo", "bar");
        a.addAttribute(foo);
        Nodes results = a.query("//@_foo");
        assertEquals(1, results.size());
        assertEquals(foo, results.get(0));
        
    }

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        System.setErr(systemErr);
    }
    
    public void testAllNodesQuery() {
        
        Document doc = new Document(new Element("doc"));
        Nodes subset = doc.query("//. | /");
        assertEquals(2, subset.size());
        
    }

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</b>
<x>4</x>
</a> */
    public void testDescendantAxisOrder() {
        
        Element a = new Element("a");
        Document doc = new Document(a);
        Element x1 = new Element("x");
        x1.appendChild("a1");
        Element x2 = new Element("x");
        x2.appendChild("b2");
        Element x3 = new Element("x");
        x3.appendChild("c3");
        Element x4 = new Element("x");
        x4.appendChild("d4");
        a.appendChild(x1);
        Element b = new Element("b");
        b.appendChild(x2);
        b.appendChild(x3);
        a.appendChild(b);
        a.appendChild(x4);
        Nodes result = doc.query("//x");
        assertEquals(4, result.size());
        assertTrue(result.get(0) instanceof Element);

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    }
    


    public void testSimpleQuery() {
        
        Element parent = new Element("Test");
        Element child = new Element("child");
        parent.appendChild(child);
        
        Nodes result = parent.query("*");
        assertEquals(1, result.size());
        assertEquals(child, result.get(0));

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    }
    
    
    public void testChildWildCard() {
     
        Element a = new Element("a");
        Element b = new Element("b");
        Element c = new Element("c");
        Element d = new Element("d");
        
        a.appendChild(b);
        b.appendChild(c);
        c.appendChild(d);

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