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Namespaces.javaAPI DocJava SE 6 API3230Tue Jun 10 00:23:00 BST 2008com.sun.org.apache.xml.internal.resolver.helpers

Namespaces

public class Namespaces extends Object
Static Namespace query methods.

This class defines a set of static methods that can be called to analyze the namespace properties of DOM nodes.

author
Norman Walsh Norman.Walsh@Sun.COM
version
1.0

Fields Summary
Constructors Summary
Methods Summary
public static java.lang.StringgetLocalName(org.w3c.dom.Element element)
Returns the "localname" part of a QName, which is the whole name if it has no prefix.

param
element The QName of an element.
return
The local part of a QName.

	String name = element.getTagName();

	if (name.indexOf(':") > 0) {
	    name = name.substring(name.indexOf(':")+1);
	}

	return name;
public static java.lang.StringgetNamespaceURI(org.w3c.dom.Node node, java.lang.String prefix)
Returns the namespace URI for the specified prefix at the specified context node.

param
node The context node.
param
prefix The prefix.
return
The namespace URI associated with the prefix, or null if no namespace declaration exists for the prefix.

	if (node == null || node.getNodeType() != Node.ELEMENT_NODE) {
	    return null;
	}

	if (prefix.equals("")) {
	    if (((Element) node).hasAttribute("xmlns")) {
		return ((Element) node).getAttribute("xmlns");
	    }
	} else {
	    String nsattr = "xmlns:" + prefix;
	    if (((Element) node).hasAttribute(nsattr)) {
		return ((Element) node).getAttribute(nsattr);
	    }
	}

	return getNamespaceURI(node.getParentNode(), prefix);
public static java.lang.StringgetNamespaceURI(org.w3c.dom.Element element)
Returns the namespace URI for the namespace to which the element belongs.

param
element The element.
return
The namespace URI associated with the namespace of the element, or null if no namespace declaration exists for it.

	String prefix = getPrefix(element);
	return getNamespaceURI(element, prefix);
public static java.lang.StringgetPrefix(org.w3c.dom.Element element)
Returns the "prefix" part of a QName or the empty string (not null) if the name has no prefix.

param
element The QName of an element.
return
The prefix part of the element name.

	String name = element.getTagName();
	String prefix = "";

	if (name.indexOf(':") > 0) {
	    prefix = name.substring(0, name.indexOf(':"));
	}

	return prefix;