Package org.jaxen.function
Class NamespaceUriFunction
- java.lang.Object
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- org.jaxen.function.NamespaceUriFunction
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- All Implemented Interfaces:
Function
public class NamespaceUriFunction extends java.lang.Object implements Function
4.1
string namespace-uri(node-set?)
The namespace-uri function returns the namespace URI of the expanded-name of the node in the argument node-set that is first in document order. If the argument node-set is empty, the first node has no expanded-name, or the namespace URI of the expanded-name is null, an empty string is returned. If the argument is omitted, it defaults to a node-set with the context node as its only member.
NOTE: The string returned by the namespace-uri function will be empty except for element nodes and attribute nodes.
- Author:
- bob mcwhirter (bob @ werken.com)
- See Also:
- Section 4.1 of the XPath Specification
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Constructor Summary
Constructors Constructor Description NamespaceUriFunction()
Create a newNamespaceUriFunction
object.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
call(Context context, java.util.List args)
Returns the namespace URI of the specified node or the namespace URI of the context node if no arguments are provided.static java.lang.String
evaluate(java.util.List list, Navigator nav)
Returns the namespace URI oflist.get(0)
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Method Detail
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call
public java.lang.Object call(Context context, java.util.List args) throws FunctionCallException
Returns the namespace URI of the specified node or the namespace URI of the context node if no arguments are provided.- Specified by:
call
in interfaceFunction
- Parameters:
context
- the context at the point in the expression where the function is calledargs
- aList
containing zero or one items- Returns:
- a
String
containing the namespace URI - Throws:
FunctionCallException
- ifargs
has more than one item
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evaluate
public static java.lang.String evaluate(java.util.List list, Navigator nav) throws FunctionCallException
Returns the namespace URI oflist.get(0)
- Parameters:
list
- a list of nodesnav
- theNavigator
used to retrieve the namespace- Returns:
- the namespace URI of
list.get(0)
- Throws:
FunctionCallException
- iflist.get(0)
is not a node
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