be.SIRAPRISE.typeimplementations

Class INTERSECT

java.lang.Object

be.SIRAPRISE.typeimplementations.RelationalOperator

be.SIRAPRISE.typeimplementations.INTERSECT

All Implemented Interfaces:

OperatorGenerator

@OperatorGeneratorCharacteristics(maximumArgumentCount=256,
                                  minimumArgumentCount=2,
                                  name="INTERSECT",
                                  signature={EXPRESSION,EXPRESSION})
public abstract class INTERSECT
extends RelationalOperator

INTERSECT

Author:

erwin

Constructor Summary

Constructors

Constructor and Description
INTERSECT()

Method Summary

Modifier and Type	Method and Description
static Relation	computeIntersect(Relation relation, Relation intersectWith)
static IRelation	computeIntersectUsing(Relation relation, Relation intersectWith, java.util.LinkedHashSet<NameIdentifier> usingAttributes)
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

INTERSECT

public INTERSECT()

Method Detail

computeIntersect

public static Relation computeIntersect(Relation relation,
                                        Relation intersectWith)
                                 throws EvaluationException

Parameters:

relation - a relation the intersection of which with another is to be computed

intersectWith - the other relation with which relation is to be intersected

Returns:

the result of intersecting both relations

Throws:

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

computeIntersectUsing

public static IRelation computeIntersectUsing(Relation relation,
                                              Relation intersectWith,
                                              java.util.LinkedHashSet<NameIdentifier> usingAttributes)
                                       throws EvaluationException

Parameters:

relation - a relation the 'USING'-intersection of which with another is to be computed

intersectWith - the other relation with which relation is to be 'USING'-intersected

usingAttributes - The interval-typed attributes to be used in 'unpack'/'pointwise' modus.

Returns:

the result of 'USING'-intersecting both relations using the interval-typed attributes mentioned in usingAttributes in 'unpack'/'pointwise' modus.

Throws:

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

getOperatorImplementation

public final OperatorImplementation_V0105 getOperatorImplementation(OperatorGeneratorArgument[] args)
                                                             throws NotFoundException

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

Throws:

NotFoundException - If the given OperatorGeneratorArguments do not satisfy all of the rules of the OperatorGenerator. These rules are specific to each OperatorGenerator.