org.eclipse.ocl.examples.library.iterator
Class ExistsIteration

java.lang.Object
  org.eclipse.ocl.examples.domain.library.AbstractFeature
      org.eclipse.ocl.examples.domain.library.AbstractIteration
          org.eclipse.ocl.examples.library.iterator.ExistsIteration

All Implemented Interfaces:

LibraryFeature, LibraryIteration

public class ExistsIteration
extends AbstractIteration

ExistsIteration realises the Collection::exists() library iteration.

Field Summary

static ExistsIteration

INSTANCE

Constructor Summary

ExistsIteration()

Method Summary

BooleanValue.Accumulator	createAccumulatorValue(DomainEvaluator evaluator, DomainType accumulatorType, DomainType bodyType) Create the value that will accumulate the iteration results.
protected Value	resolveTerminalValue(DomainIterationManager iterationManager) Return the final result at the end of an iteration over all the source elements.
protected Value	updateAccumulator(DomainIterationManager iterationManager) Update the accumulatorValue with the bodyValue resulting from the current iteration for which the iterators define the context in the environment.

Methods inherited from class org.eclipse.ocl.examples.domain.library.AbstractIteration

evaluateIteration

Methods inherited from class org.eclipse.ocl.examples.domain.library.AbstractFeature

getLibraryValidator, getValidator

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.ocl.examples.domain.library.LibraryFeature

getValidator

Field Detail

INSTANCE

public static final ExistsIteration INSTANCE

Constructor Detail

ExistsIteration

public ExistsIteration()

Method Detail

createAccumulatorValue

public BooleanValue.Accumulator createAccumulatorValue(DomainEvaluator evaluator,
                                                       DomainType accumulatorType,
                                                       DomainType bodyType)

Description copied from interface: LibraryIteration

Create the value that will accumulate the iteration results.

Parameters:

evaluator - that supervises evaluation

Returns:

the accumulator

resolveTerminalValue

protected Value resolveTerminalValue(DomainIterationManager iterationManager)

Description copied from class: AbstractIteration

Return the final result at the end of an iteration over all the source elements. The default implementation just returns the accumulator. Derived iterations should override.
This method is bypassed if the iteration ends prematurely.

Overrides:

resolveTerminalValue in class AbstractIteration

Parameters:

iterationManager - the iteration context

Returns:

the result

updateAccumulator

protected Value updateAccumulator(DomainIterationManager iterationManager)

Description copied from class: AbstractIteration

Update the accumulatorValue with the bodyValue resulting from the current iteration for which the iterators define the context in the environment.

Specified by:

updateAccumulator in class AbstractIteration

Parameters:

iterationManager - the iteration context

Returns:

non-null premature result of iteration, or null if complete