Class MappingOpExtend

java.lang.Object

se.liu.ida.hefquin.mappings.algebra.ops.BaseForMappingOperator

se.liu.ida.hefquin.mappings.algebra.ops.BaseForUnaryMappingOperator

se.liu.ida.hefquin.mappings.algebra.ops.MappingOpExtend

All Implemented Interfaces:

MappingOperator

public class MappingOpExtend
extends BaseForUnaryMappingOperator

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	MappingOpExtend.MyCursor
protected class	MappingOpExtend.MyMappingRelation

Field Summary

Fields

Modifier and Type	Field	Description
protected final String	attribute
protected final ExtendExpression	expr
protected final Set<String>	schema
protected final boolean	valid

Fields inherited from class se.liu.ida.hefquin.mappings.algebra.ops.BaseForUnaryMappingOperator

subOp

Fields inherited from class se.liu.ida.hefquin.mappings.algebra.ops.BaseForMappingOperator

id

Constructor Summary

Constructors

Constructor	Description
MappingOpExtend(MappingOperator subOp, ExtendExpression expr, String attribute)

Method Summary

Modifier and Type	Method	Description
MappingRelation	evaluate(Map<SourceReference,DataObject> srMap)
String	getAttribute()
ExtendExpression	getExtendExpression()
Set<String>	getSchema()
boolean	isValid()
boolean	isValidInput(Map<SourceReference,DataObject> srMap)
void	visit(MappingOperatorVisitor visitor)

Methods inherited from class se.liu.ida.hefquin.mappings.algebra.ops.BaseForUnaryMappingOperator

getSubOp

Methods inherited from class se.liu.ida.hefquin.mappings.algebra.ops.BaseForMappingOperator

getID

Methods inherited from class java.lang.Object

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

Field Details

expr

protected final ExtendExpression expr

attribute

protected final String attribute

schema

protected final Set<String> schema

valid

protected final boolean valid

Constructor Details

MappingOpExtend

public MappingOpExtend(MappingOperator subOp,
 ExtendExpression expr,
 String attribute)

Method Details

getAttribute

public String getAttribute()

getExtendExpression

public ExtendExpression getExtendExpression()

getSchema

public Set<String> getSchema()

isValid

public boolean isValid()

visit

public void visit(MappingOperatorVisitor visitor)

isValidInput

public boolean isValidInput(Map<SourceReference,DataObject> srMap)

evaluate

public MappingRelation evaluate(Map<SourceReference,DataObject> srMap)