uk.ac.bbk.dcs.automed.xml.functions
Class GenerateElemUIDOffSet

java.lang.Object
  uk.ac.bbk.dcs.automed.qproc.functions.BuiltInFunction
      uk.ac.bbk.dcs.automed.xml.functions.GenerateElemUIDOffSet

public class GenerateElemUIDOffSet
extends BuiltInFunction

Function that produces element UIDs based on the two arguments passed to the function.

The first argument is a string representing the SID of the element (the SID is of the form <elementName>$count_sid).

The second argument is an ASG representing a list; the function will create as many element UIDs as the size of the list.

The third argument is an integer specifying an offset for the instance counter.

Author:

Lucas Zamboulis

Field Summary

Fields inherited from class uk.ac.bbk.dcs.automed.qproc.functions.BuiltInFunction

arity, logger, typeList

Constructor Summary

GenerateElemUIDOffSet()

Method Summary

Cell	perform(Cell[] args, Evaluator e)

Methods inherited from class uk.ac.bbk.dcs.automed.qproc.functions.BuiltInFunction

finalize, getArity, getTypeList

Methods inherited from class java.lang.Object

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

Constructor Detail

GenerateElemUIDOffSet

public GenerateElemUIDOffSet()
                      throws ParseException

Throws:

ParseException

Method Detail

perform

public Cell perform(Cell[] args,
                    Evaluator e)
             throws TypeException,
                    QProcException

Specified by:

perform in class BuiltInFunction

Returns:

a Cell object that is the root of a graph that represents the result of applying the built-in function to the arguments args. Uses the Evaluator e to evaluate any sub-queries that need to be evaluated.

Throws:

TypeException

QProcException