Package ru.ewc.decita.conditions

Class BinaryCondition

java.lang.Object

ru.ewc.decita.conditions.BinaryCondition

All Implemented Interfaces:

Condition

Direct Known Subclasses:

EqualsCondition, GreaterThanCondition, LessThanCondition

public abstract class BinaryCondition
extends Object
implements Condition

I represent a simple Condition using two Coordinates and some comparison operation. My main responsibility is to compute that comparison and check if it's true or not.

Since:

0.1

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BinaryCondition(Coordinate left, Coordinate right)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected abstract org.hamcrest.Matcher<Coordinate>	comparisonFor()	Creates a Matcher that corresponds to the given operation and Coordinate.
final boolean	evaluate(ComputationContext context)	Evaluates all the parts of the Condition and provides the result of that evaluation.
final boolean	isEvaluated()	Checks if all the parts of the Condition are resolved and point to the constant values.
final boolean	isSatisfied()	Checks if this Condition resolves to true.
protected final Coordinate	rightPart()	Returns the right part of this Condition.

Methods inherited from class java.lang.Object

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

Methods inherited from interface ru.ewc.decita.conditions.Condition

isNotSatisfied

Constructor Details

BinaryCondition

protected BinaryCondition(Coordinate left,
 Coordinate right)

Constructor.

Parameters:

left - Left-side Coordinate.

right - Right-side Coordinate.

Method Details

evaluate

public final boolean evaluate(ComputationContext context)
                       throws DecitaException

Description copied from interface: Condition

Evaluates all the parts of the Condition and provides the result of that evaluation.

Specified by:

evaluate in interface Condition

Parameters:

context - The ComputationContext to evaluate Condition in.

Returns:

Whether the Condition stands true.

Throws:

DecitaException - If the evaluation cannot be performed.

isEvaluated

public final boolean isEvaluated()

Description copied from interface: Condition

Checks if all the parts of the Condition are resolved and point to the constant values.

Specified by:

isEvaluated in interface Condition

Returns:

True, if both parts of the Condition are evaluated.

isSatisfied

public final boolean isSatisfied()

Description copied from interface: Condition

Checks if this Condition resolves to true.

Specified by:

isSatisfied in interface Condition

Returns:

True, if it does.

comparisonFor

protected abstract org.hamcrest.Matcher<Coordinate> comparisonFor()

Creates a Matcher that corresponds to the given operation and Coordinate.

Returns:

The Matcher to use in this Condition.

rightPart

protected final Coordinate rightPart()

Returns the right part of this Condition.

Returns:

The Coordinate that is its right part.