Count
Keywords: uk.ac.bbk.dcs.automed.qproc.functions.collections.Count class

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## uk.ac.bbk.dcs.automed.qproc.functions.collections
Class Count

    java.lang.Object
      uk.ac.bbk.dcs.automed.qproc.functions.BuiltInFunction
          uk.ac.bbk.dcs.automed.qproc.functions.collections.Count

    public class Count

extends BuiltInFunction

Field Summary

Fields inherited from class uk.ac.bbk.dcs.automed.qproc.functions.BuiltInFunction
`arity, logger, typeList`

Constructor Summary
`Count()`

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

### Count

    public Count()
          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`

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