org.jmlspecs.jmlunit.strategies
Class AbstractExtensibleStrategyDecorator

java.lang.Object
  org.jmlspecs.jmlunit.strategies.AbstractExtensibleStrategyDecorator

All Implemented Interfaces:

StrategyType

Direct Known Subclasses:

CloneableObjectAbstractExtensibleStrategyDecorator, ImmutableObjectExtensibleStrategyDecorator

public abstract class AbstractExtensibleStrategyDecorator

extends Object

implements StrategyType

A decorator for strategies that allows for easy extension to the test data of the underlying strategy.

This type provides an extension mechanism that is easier to use than a composite. To extend the test data, make a subclass that overrides the addData() method; this method provides the additional data for testing.

Author:

Gary T. Leavens

Field Summary
private  StrategyType	addedData           The added data, returned after the default data in the iterations.
private  StrategyType	defaultData           The default data, returned first in the iterations.

 

Constructor Summary

AbstractExtensibleStrategyDecorator(StrategyType strat)

 

Method Summary
protected  Object[]	addData()           Subclasses can override this to make simple extensions to the data used.
protected abstract  StrategyType	addedDataStrategy(Object[] added)
IndefiniteIterator	iterator()           Compute a fresh indefinite iterator, which can be used to provide test data of some reference type.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

defaultData

private final StrategyType defaultData

The default data, returned first in the iterations.

addedData

private final StrategyType addedData

The added data, returned after the default data in the iterations.

AbstractExtensibleStrategyDecorator

public AbstractExtensibleStrategyDecorator(StrategyType strat)

addedDataStrategy

protected abstract StrategyType addedDataStrategy(Object[] added)

iterator

public IndefiniteIterator iterator()

Description copied from interface: StrategyType

Compute a fresh indefinite iterator, which can be used to provide test data of some reference type. The indefinite iterator returned should be freshly created. Usually it should not be at its end. However, in rare cases it might make sense to have an empty iterator be computed (e.g., by filtering).

Specified by:

iterator in interface StrategyType

addData

protected Object[] addData()

Subclasses can override this to make simple extensions to the data used. This should only be called once when the object is being construted.