Examples of nu.xom.Element.addNamespaceDeclaration()

nu.xom.Element.addNamespaceDeclaration()

Declares a namespace prefix. This is only necessary when prefixes are used in element content and attribute values, as in XSLT and the W3C XML Schema Language. Do not use this method to declare prefixes for element and attribute names.

You can supply an empty string for the prefix to declare a default namespace, provided the element itself has a prefix.

If you do redeclare a prefix that is already used by an element or attribute name, the additional namespace is added if and only if the URI is the same. Conflicting namespace declarations will throw an exception.
@param prefix the prefix to declare @param uri the absolute URI reference to map the prefix to @throws MalformedURIException if URI is not an RFC 3986 URI reference @throws IllegalNameException if prefix is not a legal XML non-colonized name or the empty string @throws NamespaceConflictException if the mapping conflicts with an existing element, attribute, or additional namespace declaration

    public void testPredicateWithNamespaceAxis() {
        
        Element parent = new Element("Test");
        Element child = new Element("child", "http://www.example.com");
        Element grandchild = new Element("child", "http://www.example.com");
        grandchild.addNamespaceDeclaration("pre", "http://www.w3.org/");
        parent.appendChild(child);
        child.appendChild(grandchild);
        
        // Every node has at least a mapping for xml prefix.
        Nodes result = parent.query("self::*[count(namespace::*)=0]");

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    public void testPredicateWithNamespaceAxis2() {
        
        Element parent = new Element("Test");
        Element child = new Element("child", "http://www.example.com");
        Element grandchild = new Element("child", "http://www.example.com");
        grandchild.addNamespaceDeclaration("pre", "http://www.w3.org/");
        parent.appendChild(child);
        child.appendChild(grandchild);
        
        // Every node has at least a mapping for xml prefix.
        Nodes result = parent.query("*[count(namespace::*)=0]");

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        Element parent = new Element("Test", "http://www.example.org");
        Element child = new Element("child", "http://www.example.org");
        parent.appendChild(child);
        
        Element test = new Element("test");
        test.addNamespaceDeclaration("pre", "http://www.example.org");
        XPathContext context = XPathContext.makeNamespaceContext(test);
        Nodes result = parent.query("child::pre:child", context);
        assertEquals(1, result.size());
        assertEquals(child, result.get(0));

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        Element parent = new Element("Test", "http://www.example.org");
        Element child = new Element("child", "http://www.example.org");
        parent.appendChild(child);
        
        Element test = new Element("test");
        test.addNamespaceDeclaration("pre", "http://www.example.org");
        Element testChild = new Element("testchild");
        test.appendChild(testChild);
        XPathContext context = XPathContext.makeNamespaceContext(testChild);
        Nodes result = parent.query("child::pre:child", context);
        assertEquals(1, result.size());

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    public void testAdditionalNamespace()  
      throws IOException, SAXException, ParsingException {
        
        Element root = new Element("root");
        root.addNamespaceDeclaration("xsl", "http://www.w3.org/1999/XSL/Transform");
        Document doc = new Document(root);  
        convertAndCompare(doc); 
        
    }

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    public void testPrefixAndAdditionalNamespace()  
      throws IOException, SAXException, ParsingException {
        
        Element root = new Element("xsl:root", "http://www.w3.org/1999/XSL/Transform");
        root.addNamespaceDeclaration("xsl", "http://www.w3.org/1999/XSL/Transform");
        Document doc = new Document(root);  
        convertAndCompare(doc); 
        
    }

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    public void testAdditionalNamespaceDuplicatesElementNamespace() {
        
        Element element = new Element("pre:element", "http://www.example.org");
        element.addNamespaceDeclaration("pre", "http://www.example.org");
        element.setNamespacePrefix("foo");
        assertEquals("http://www.example.org", element.getNamespaceURI("pre"));
        
    }

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          "http://www.w3.org/2001/xlink", "value"));
        assertEquals(2, test.getNamespaceDeclarationCount());
        test.addAttribute(new Attribute("xlink:href", 
          "http://www.w3.org/2001/xlink", "value"));
        assertEquals(2, test.getNamespaceDeclarationCount());
        test.addNamespaceDeclaration("xlink", "http://www.w3.org/2001/xlink");
        assertEquals(2, test.getNamespaceDeclarationCount());
        test.addNamespaceDeclaration("xsi", "http://www.w3.org/2001/xmlschema-instance");
        assertEquals(3, test.getNamespaceDeclarationCount());
           
    }

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        test.addAttribute(new Attribute("xlink:href", 
          "http://www.w3.org/2001/xlink", "value"));
        assertEquals(2, test.getNamespaceDeclarationCount());
        test.addNamespaceDeclaration("xlink", "http://www.w3.org/2001/xlink");
        assertEquals(2, test.getNamespaceDeclarationCount());
        test.addNamespaceDeclaration("xsi", "http://www.w3.org/2001/xmlschema-instance");
        assertEquals(3, test.getNamespaceDeclarationCount());
           
    }

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    public void testAddSameNamespaceDeclaration() {
        
        Element e = new Element("test", "http://www.example.com");
       
        try {
            e.addNamespaceDeclaration("", "http://www.red.com");
            fail("added conflicting default namespace");   
        }
        catch (NamespaceConflictException success) {
            assertNotNull(success.getMessage());
        }

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