ch.ethz.mxquery.functions
Class Function

java.lang.Object
  ch.ethz.mxquery.functions.Function

public class Function
extends java.lang.Object

Holds information on the function metadata and methods to retrieve the implementation, either by an explicit iterator or by the name of a class to load

Constructor Summary

Function(java.lang.String className, FunctionSignature signature, XDMIterator iter)

Method Summary

Function	copy(Context context, java.util.Vector nestedPredCtxStack) Create a copy of this function
Function	getAsExternalFunction(java.lang.String prefix) Adapts the signature of the function to become an external class
XDMIterator	getFunctionImplementation(Context targetContext) Returns an implementation of this function as an iterator.
FunctionSignature	getFunctionSignature() Get the signature of this function

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Function

public Function(java.lang.String className,
                FunctionSignature signature,
                XDMIterator iter)

Method Detail

getAsExternalFunction

public Function getAsExternalFunction(java.lang.String prefix)

Adapts the signature of the function to become an external class

Parameters:

prefix - The namespace prefix in which the function should appear

Returns:

a copy of the function with an adapted signature

getFunctionImplementation

public XDMIterator getFunctionImplementation(Context targetContext)
                                      throws MXQueryException

Returns an implementation of this function as an iterator.

Returns:

an XDM iterator representing this function

Throws:

MXQueryException

getFunctionSignature

public FunctionSignature getFunctionSignature()
                                       throws MXQueryException

Get the signature of this function

Returns:

a copy of the signature

Throws:

MXQueryException

copy

public Function copy(Context context,
                     java.util.Vector nestedPredCtxStack)
              throws MXQueryException

Create a copy of this function

Parameters:

context -

nestedPredCtxStack -

Returns:

a deep copy of this function object

Throws:

MXQueryException