XPathFunctionsProvider¶

class XPathFunctionsProvider implements ExtensionsProvider¶

XPathFunctionsProvider implements the Apache XPath Extensions Provider. It is solely used by the XPathExecutor in building an Apache XPath Context.

Author:	Hugo Y. K. Lam

Methods¶

public boolean elementAvailable(String ns, String elemName)¶

Checks if the given element is available.

Parameters:	ns – the namespace of the element. elemName – the element name.
Returns:	false in any way.

See also: org.apache.xpath.ExtensionsProvider.elementAvailable(java.lang.String,java.lang.String)

public Object extFunction(String ns, String funcName, Vector argVec, Object methodKey)¶

Executes the extension function.

Parameters:	ns – the namespace of the function. funcName – the function name. argVec – the function arguments. methodKey – the method key.
Throws:	TransformerException – if the function executed with errors or the function is not available.
Returns:	the execution result.

See also: org.apache.xpath.ExtensionsProvider.extFunction(java.lang.String,java.lang.String,java.util.Vector,java.lang.Object)

public boolean functionAvailable(String ns, String funcName)¶

Checks if the given function is available.

Parameters:	ns – the namespace of the function. funcName – the function name.
Returns:	true if the given function is available.

See also: org.apache.xpath.ExtensionsProvider.functionAvailable(java.lang.String,java.lang.String)

public void regsiterFunction(String ns, String funcName, XPathFunction func)¶

Registers a function to this provider.

Parameters:	ns – the namespace of the function. funcName – the function name. func – the function implementation.