be.SIRAPRISE.typeimplementations

Class EXTEND

java.lang.Object

be.SIRAPRISE.typeimplementations.RelationalOperator

be.SIRAPRISE.typeimplementations.EXTEND

All Implemented Interfaces:

OperatorGenerator

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

Author:

erwin

Constructor Summary

Constructors

Constructor and Description
EXTEND()

Method Summary

Modifier and Type	Method and Description
static RelationBuffer	computeExtend(RelationBuffer relationBuffer, java.util.Map<NameIdentifier,java.lang.String> extendExpressions)
static Relation	computeExtend(Relation relation, java.util.Map<NameIdentifier,java.lang.String> extendExpressions)
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

EXTEND

public EXTEND()

Method Detail

computeExtend

public static Relation computeExtend(Relation relation,
                                     java.util.Map<NameIdentifier,java.lang.String> extendExpressions)

Parameters:

relation - the relation to be extended

extendExpressions - the extend expressions to be evaluated for each tuple

Returns:

the extended relation

computeExtend

public static RelationBuffer computeExtend(RelationBuffer relationBuffer,
                                           java.util.Map<NameIdentifier,java.lang.String> extendExpressions)

Parameters:

relationBuffer - the relationbuffer holding the tuples to be extended

extendExpressions - the extend expressions to be evaluated for each tuple

Returns:

the relationbuffer holding the extended tuples

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