edu.unh.sdb.datasource
Class ComponentInfo

java.lang.Object
  edu.unh.sdb.datasource.ComponentInfo

public class ComponentInfo
extends java.lang.Object

This class records information about a component DataSource of a AttributeJoinDataSource or BlockedDataSource.

Field Summary

protected Indexable	component
protected FieldIDMapper	fieldIDMap
protected ISIDMapper	ISIDMap
protected RecordDescriptor	rDesc

Constructor Summary

ComponentInfo(Indexable cds, FieldIDMapper fidmap, ISIDMapper isidmap)
Construct a ComponentInfo from DataCollection, FieldIDMapper and ISIDMapper.

Method Summary

boolean	contains(IndexSpaceID isid) If this component contains the given IndexSpaceID, returns true
boolean	equals(ComponentInfo comp2)
Indexable	getComponent()
FieldIDMapper	getFieldIDMap()
ISIDMapper	getISIDMap()
RecordDescriptor	getRecordDescriptor() return the current recordDescriptor for this componentInfo
void	rename(java.lang.String[] names) rename all (or part of) the attributes by giving an array of names
void	setAttributeName(int index, java.lang.String name) rename an attribute at position given by index

Methods inherited from class java.lang.Object

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

Field Detail

component

protected Indexable component

fieldIDMap

protected FieldIDMapper fieldIDMap

ISIDMap

protected ISIDMapper ISIDMap

rDesc

protected RecordDescriptor rDesc

Constructor Detail

ComponentInfo

public ComponentInfo(Indexable cds,
                     FieldIDMapper fidmap,
                     ISIDMapper isidmap)

Construct a ComponentInfo from DataCollection, FieldIDMapper and ISIDMapper.

Parameters:

cds - -- DataSource or DataBlock to be used as Component

fidmap - -- Map fields from component to composite; null is ok and implies an identity mapping

isidmap - -- Map index spaces. null is ok and implies identity.

Method Detail

getComponent

public Indexable getComponent()

getFieldIDMap

public FieldIDMapper getFieldIDMap()

getISIDMap

public ISIDMapper getISIDMap()

equals

public boolean equals(ComponentInfo comp2)

setAttributeName

public void setAttributeName(int index,
                             java.lang.String name)

rename an attribute at position given by index

rename

public void rename(java.lang.String[] names)

rename all (or part of) the attributes by giving an array of names

getRecordDescriptor

public RecordDescriptor getRecordDescriptor()

return the current recordDescriptor for this componentInfo

contains

public boolean contains(IndexSpaceID isid)

If this component contains the given IndexSpaceID, returns true