Class ExtendedMappingRelation

java.lang.Object

se.liu.ida.hefquin.mappings.algebra.impl.BaseForMappingRelationImpl

se.liu.ida.hefquin.mappings.algebra.exec.ExtendedMappingRelation

All Implemented Interfaces:

MappingRelation

public class ExtendedMappingRelation
extends BaseForMappingRelationImpl

A MappingRelation produced by a MappingOpExtend operator.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	ExtendedMappingRelation.MyCursor

Field Summary

Fields

Modifier and Type	Field	Description
protected final String	attribute
protected final ExtendExpression	expr
protected final int	idxOfNewAttribute
protected final MappingRelation	input
protected final String[]	schemaMappingAttrs
protected final int[]	schemaMappingIdxs

Fields inherited from class se.liu.ida.hefquin.mappings.algebra.impl.BaseForMappingRelationImpl

schema

Fields inherited from interface se.liu.ida.hefquin.mappings.algebra.MappingRelation

errorNode, gAttr, oAttr, pAttr, sAttr, spogAttrs

Constructor Summary

Constructors

Constructor	Description
ExtendedMappingRelation(MappingRelation input, ExtendExpression expr, String attribute)

Method Summary

Modifier and Type	Method	Description
protected static List<String>	createSchema(MappingRelation input, String attribute)
MappingRelationCursor	getCursor()

Methods inherited from class se.liu.ida.hefquin.mappings.algebra.impl.BaseForMappingRelationImpl

getSchema

Methods inherited from class java.lang.Object

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

Field Details

input

protected final MappingRelation input

expr

protected final ExtendExpression expr

attribute

protected final String attribute

idxOfNewAttribute

protected final int idxOfNewAttribute

schemaMappingAttrs

protected final String[] schemaMappingAttrs

schemaMappingIdxs

protected final int[] schemaMappingIdxs

Constructor Details

ExtendedMappingRelation

public ExtendedMappingRelation(MappingRelation input,
 ExtendExpression expr,
 String attribute)

Method Details

createSchema

protected static List<String> createSchema(MappingRelation input,
 String attribute)

getCursor

public MappingRelationCursor getCursor()