net.sf.jec.namedop
Class GroupOperator

java.lang.Object
  net.sf.jec.Operator
      net.sf.jec.namedop.GroupOperator

Direct Known Subclasses:

AvgOperator, CountOperator, GroupByOperator, IfOperator, MaxOperator, MinOperator, OrderByOperator, SumOperator

public abstract class GroupOperator

extends Operator

GroupOperator is the abstract parent class of every operator that operates over a group (an object implementing the Map interface)

Author:

mballesteros

Field Summary

Fields inherited from class net.sf.jec.Operator

argOps, nestedOp, showFunctionString

Constructor Summary

GroupOperator()
Creates a new GroupOperator

Method Summary

protected java.lang.Object

applyToGroup(java.lang.Object rootCtx, java.util.Map map) Applies operator over a group...

Methods inherited from class net.sf.jec.Operator

apply, directMap, setArgumentOperators, setNestedOperator, toExpressionString, toFunctionString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupOperator

public GroupOperator()

Creates a new GroupOperator

Method Detail

applyToGroup

protected java.lang.Object applyToGroup(java.lang.Object rootCtx,
                                        java.util.Map map)
                                 throws EvaluationException

Applies operator over a group...

Throws:

EvaluationException