Package net.ssehub.easy.varModel.cstEvaluation

Class ContainerIterators.NumberIteratorEvaluator

java.lang.Object

net.ssehub.easy.varModel.cstEvaluation.ContainerIterators.NumberIteratorEvaluator

All Implemented Interfaces:

IIteratorEvaluator

Enclosing class:

ContainerIterators

private abstract static class ContainerIterators.NumberIteratorEvaluator
extends java.lang.Object
implements IIteratorEvaluator

A number aggregating iterator.

Author:

Holger Eichelberger

Constructor Summary

Constructors

Modifier	Constructor	Description
private	NumberIteratorEvaluator()

Method Summary

Modifier and Type	Method	Description
BooleanValue	aggregate(EvaluationAccessor result, Value iter, EvaluationAccessor value, java.util.Map<java.lang.Object,java.lang.Object> data)	Aggregate value to result.
protected abstract double	doubleOp(double d1, double d2)	Performs the double aggregation operation.
Value	getStartResult(IDatatype type, IDatatype iterType)	Returns the start result.
protected abstract int	intOp(int i1, int i2)	Performs the integer aggregation operation.
void	postProcessResult(EvaluationAccessor result, java.util.Map<java.lang.Object,java.lang.Object> data)	Called to post-process the actual result at the end after the last iteration.

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberIteratorEvaluator

private NumberIteratorEvaluator()

Method Detail

intOp

protected abstract int intOp(int i1,
                             int i2)

Performs the integer aggregation operation.

Parameters:

i1 - the first integer

i2 - the second integer

Returns:

the aggregated value

doubleOp

protected abstract double doubleOp(double d1,
                                   double d2)

Performs the double aggregation operation.

Parameters:

d1 - the first double

d2 - the second double

Returns:

the aggregated value

aggregate

public BooleanValue aggregate(EvaluationAccessor result,
                              Value iter,
                              EvaluationAccessor value,
                              java.util.Map<java.lang.Object,java.lang.Object> data)
                       throws ValueDoesNotMatchTypeException

Description copied from interface: IIteratorEvaluator

Aggregate value to result.

Specified by:

aggregate in interface IIteratorEvaluator

Parameters:

result - the aggregating result

iter - the current value of the iterator

value - the value to be aggregated

data - arbitrary data to be hold while actually evaluating the function

Returns:

a boolean value to indicate whether iteration/evaluation shall stop (true if iteration shall stop due to this evaluation, false else), a collection of values as instance of ListWrapperValue where to go on

Throws:

ValueDoesNotMatchTypeException - in case of type compatibility problems

getStartResult

public Value getStartResult(IDatatype type,
                            IDatatype iterType)
                     throws ValueDoesNotMatchTypeException

Description copied from interface: IIteratorEvaluator

Returns the start result. Used in case of all operations where the start result is implicitly clear from the operation itself and not explicitly defined in the model.

Specified by:

getStartResult in interface IIteratorEvaluator

Parameters:

type - the type of the return value

iterType - the type of the iterator expression

Returns:

the start value (must comply to type)

Throws:

ValueDoesNotMatchTypeException - in case of type compatibility problems

postProcessResult

public void postProcessResult(EvaluationAccessor result,
                              java.util.Map<java.lang.Object,java.lang.Object> data)
                       throws ValueDoesNotMatchTypeException

Description copied from interface: IIteratorEvaluator

Called to post-process the actual result at the end after the last iteration.

Specified by:

postProcessResult in interface IIteratorEvaluator

Parameters:

result - the aggregated result so far

data - arbitrary data to be hold while actually evaluating the function

Throws:

ValueDoesNotMatchTypeException - in case of type compatibility problems