vishnu.model.indexes
Class AbstractIndex

java.lang.Object
  vishnu.model.indexes.AbstractIndex

All Implemented Interfaces:

Index

Direct Known Subclasses:

AbstractHashIndex, BTreeIndex

public abstract class AbstractIndex
extends java.lang.Object
implements Index

Author:

Mariano

Field Summary

protected TableContext

context

Fields inherited from interface vishnu.model.indexes.Index

BTREE, CLUSTERED, HASH, UNIQUE

Constructor Summary

AbstractIndex(java.lang.String name, boolean isUnique, boolean isClustered, int structure, java.util.List<java.lang.String> searchKeys)

Method Summary

void	attach(TableContext c) Usado para definir el esquema del indice.
protected Database	database()
int	getStructure() devuelve el tipo de estructura del indice (HASH , BTREE o algun otro)
Value	getStructureIdentifier() devuelve el tipo de estructura del indice (HASH , BTREE o algun otro)
Table	getTable()
boolean	isClustered() indica si el indice es clustered
boolean	isUnique() indica si el indice es unique
java.lang.String	name() devuelve el nombre del indice
void	notifyDelete(Record r)
void	notifyUpdate(Record r)
java.util.List<java.lang.String>	searchKeys() TODO FIX COMMENT.
protected UserContext	userContext()

Methods inherited from class java.lang.Object

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

Methods inherited from interface vishnu.model.indexes.Index

createSearchKeyRecord, matchingRecords, notifyInsert

Field Detail

context

protected TableContext context

Constructor Detail

AbstractIndex

public AbstractIndex(java.lang.String name,
                     boolean isUnique,
                     boolean isClustered,
                     int structure,
                     java.util.List<java.lang.String> searchKeys)

Method Detail

searchKeys

public java.util.List<java.lang.String> searchKeys()

Description copied from interface: Index

TODO FIX COMMENT. debe trabajar sobre una lista de columnas (SearchKey) devuelve el nombre de la columna a la que apunta el indice

Specified by:

searchKeys in interface Index

name

public java.lang.String name()

Description copied from interface: Index

devuelve el nombre del indice

Specified by:

name in interface Index

getStructure

public int getStructure()

Description copied from interface: Index

devuelve el tipo de estructura del indice (HASH , BTREE o algun otro)

Specified by:

getStructure in interface Index

getTable

public Table getTable()

isUnique

public boolean isUnique()

Description copied from interface: Index

indica si el indice es unique

Specified by:

isUnique in interface Index

isClustered

public boolean isClustered()

Description copied from interface: Index

indica si el indice es clustered

Specified by:

isClustered in interface Index

getStructureIdentifier

public Value getStructureIdentifier()

Description copied from interface: Index

devuelve el tipo de estructura del indice (HASH , BTREE o algun otro)

Specified by:

getStructureIdentifier in interface Index

attach

public void attach(TableContext c)

Description copied from interface: Index

Usado para definir el esquema del indice.

Specified by:

attach in interface Index

database

protected Database database()

userContext

protected UserContext userContext()

notifyDelete

public void notifyDelete(Record r)

Specified by:

notifyDelete in interface Index

notifyUpdate

public void notifyUpdate(Record r)

Specified by:

notifyUpdate in interface Index