be.SIRAPRISE.typeimplementations

Class MINUS

java.lang.Object

be.SIRAPRISE.typeimplementations.RelationalOperator

be.SIRAPRISE.typeimplementations.MINUS

All Implemented Interfaces:

OperatorGenerator

@OperatorGeneratorCharacteristics(maximumArgumentCount=2,
                                  minimumArgumentCount=2,
                                  name="MINUS",
                                  signature={EXPRESSION,EXPRESSION})
public abstract class MINUS
extends RelationalOperator

MINUS

Author:

erwin

Constructor Summary

Constructors

Constructor and Description
MINUS()

Method Summary

Modifier and Type	Method and Description
static Relation	computePlainDifference(Relation minuend, Relation subtrahend) Computes the difference between minuend and subtrahend
static Relation	computeUsingDifference(Relation minuend, Relation subtrahend, java.util.LinkedHashSet<NameIdentifier> usingAttributes) Computes the difference between minuend and subtrahend, with the usingAtributres treated in 'USING'/'pointwise' mode
OperatorImplementation_V0105	getOperatorImplementation(OperatorGeneratorArgument[] args) Gets an implementation instance of the operator.

Methods inherited from class be.SIRAPRISE.typeimplementations.RelationalOperator

getInvocationName, getMaximumArgumentCount, getMinimumArgumentCount, getName, getOperatorGeneratorSignature, isMonoRelationOperator, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MINUS

public MINUS()

Method Detail

computePlainDifference

public static Relation computePlainDifference(Relation minuend,
                                              Relation subtrahend)
                                       throws EvaluationException

Computes the difference between minuend and subtrahend

Parameters:

minuend - the relation from which is to be subtracted (in 'USING' mode)

subtrahend - the relation to be subtracted from the minuend (in 'USING' mode)

Returns:

The result of computing the difference between minuend and subtrahend

Throws:

EvaluationException - If the evaluation fails for any reason. See the contained getCause() exception for more detail.

computeUsingDifference

public static Relation computeUsingDifference(Relation minuend,
                                              Relation subtrahend,
                                              java.util.LinkedHashSet<NameIdentifier> usingAttributes)
                                       throws EvaluationException

Computes the difference between minuend and subtrahend, with the usingAtributres treated in 'USING'/'pointwise' mode

Parameters:

minuend - the relation from which is to be subtracted (in 'USING' mode)

subtrahend - the relation to be subtracted from the minuend (in 'USING' mode)

usingAttributes - the interval-typed attributes of the relations that are to be treated in 'USING' mode

Returns:

The result of computing the difference between minuend and subtrahend with the usingAttributes treated in 'USING'('pointwise') mode

Throws:

EvaluationException - If the evaluation failed for any reason. See the contained getCause() exception for more detail.

getOperatorImplementation

public final OperatorImplementation_V0105 getOperatorImplementation(OperatorGeneratorArgument[] args)

Description copied from interface: OperatorGenerator

Gets an implementation instance of the operator.

Parameters:

args - The arguments from which the instance is to be created. There must be exactly as many arguments as there are elements in the list returned from OperatorGenerator.getOperatorGeneratorSignature(). The correspondence between OperatorGeneratorArgumentType values and OperatorGeneratorArgument types is given in the table below :

correspondence between OperatorGeneratorArgumentType values and OperatorGeneratorArgument types

OperatorGeneratorArgumentType value	OperatorGeneratorArgument type
EXPRESSION	NonScalarOperatorGeneratorExpressionArgument
EXPRESSIONWITHSCOPE	NonScalarOperatorGeneratorExpressionArgument
STRING	NonScalarOperatorGeneratorTextArgument

Returns:

an instance of the operator