org.apache.cassandra.db.index

Class AbstractSimplePerColumnSecondaryIndex

java.lang.Object

org.apache.cassandra.db.index.SecondaryIndex

org.apache.cassandra.db.index.PerColumnSecondaryIndex

org.apache.cassandra.db.index.AbstractSimplePerColumnSecondaryIndex

Direct Known Subclasses:

CompositesIndex, KeysIndex

public abstract class AbstractSimplePerColumnSecondaryIndex
extends PerColumnSecondaryIndex

Implements a secondary index for a column family using a second column family in which the row keys are indexed values, and column names are base row keys.

Field Summary

Fields

Modifier and Type	Field and Description
protected ColumnDefinition	columnDef
protected ColumnFamilyStore	indexCfs

Fields inherited from class org.apache.cassandra.db.index.SecondaryIndex

baseCfs, columnDefs, CUSTOM_INDEX_OPTION_NAME, keyComparator, logger

Constructor Summary

Constructors

Constructor and Description
AbstractSimplePerColumnSecondaryIndex()

Method Summary

Methods

Modifier and Type	Method and Description
void	delete(java.nio.ByteBuffer rowKey, Cell cell, OpOrder.Group opGroup) Delete a column from the index.
long	estimateResultRows()
java.lang.String	expressionString(IndexExpression expr)
void	forceBlockingFlush() Forces this indexes' in memory data to disk
protected abstract AbstractType	getExpressionComparator()
ColumnFamilyStore	getIndexCfs() Allow access to the underlying column family store if there is one
protected abstract java.nio.ByteBuffer	getIndexedValue(java.nio.ByteBuffer rowKey, Cell cell)
protected AbstractType<?>	getIndexKeyComparator()
DecoratedKey	getIndexKeyFor(java.nio.ByteBuffer value) Returns the decoratedKey for a column value
java.lang.String	getIndexName()
void	init() Perform any initialization work
void	insert(java.nio.ByteBuffer rowKey, Cell cell, OpOrder.Group opGroup) insert a column to the index
void	invalidate() Remove the index and unregisters this index's mbean if one exists
protected abstract CellName	makeIndexColumnName(java.nio.ByteBuffer rowKey, Cell cell)
void	reload() Reload an existing index following a change to its configuration, or that of the indexed column(s).
void	removeIndex(java.nio.ByteBuffer columnName) Delete all files and references to this index
void	truncateBlocking(long truncatedAt) Truncate all the data from the current index
void	update(java.nio.ByteBuffer rowKey, Cell oldCol, Cell col, OpOrder.Group opGroup) update a column from the index

Methods inherited from class org.apache.cassandra.db.index.PerColumnSecondaryIndex

getNameForSystemKeyspace, validate

Methods inherited from class org.apache.cassandra.db.index.SecondaryIndex

buildIndexAsync, buildIndexBlocking, createInstance, createSecondaryIndexSearcher, getBaseCfs, getColumnDefs, getIndexComparator, indexes, isIndexBuilt, setIndexBuilt, setIndexRemoved, validateOptions

Methods inherited from class java.lang.Object

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

Field Detail

indexCfs

protected ColumnFamilyStore indexCfs

columnDef

protected ColumnDefinition columnDef

Constructor Detail

AbstractSimplePerColumnSecondaryIndex

public AbstractSimplePerColumnSecondaryIndex()

Method Detail

init

public void init()

Description copied from class: SecondaryIndex

Perform any initialization work

Specified by:

init in class SecondaryIndex

getIndexKeyComparator

protected AbstractType<?> getIndexKeyComparator()

getIndexKeyFor

public DecoratedKey getIndexKeyFor(java.nio.ByteBuffer value)

Description copied from class: SecondaryIndex

Returns the decoratedKey for a column value

Overrides:

getIndexKeyFor in class SecondaryIndex

Parameters:

value - column value

Returns:

decorated key

makeIndexColumnName

protected abstract CellName makeIndexColumnName(java.nio.ByteBuffer rowKey,
                           Cell cell)

getIndexedValue

protected abstract java.nio.ByteBuffer getIndexedValue(java.nio.ByteBuffer rowKey,
                                  Cell cell)

getExpressionComparator

protected abstract AbstractType getExpressionComparator()

expressionString

public java.lang.String expressionString(IndexExpression expr)

delete

public void delete(java.nio.ByteBuffer rowKey,
          Cell cell,
          OpOrder.Group opGroup)

Description copied from class: PerColumnSecondaryIndex

Delete a column from the index.

Specified by:

delete in class PerColumnSecondaryIndex

Parameters:

rowKey - the underlying row key which is indexed

cell - all the column info

insert

public void insert(java.nio.ByteBuffer rowKey,
          Cell cell,
          OpOrder.Group opGroup)

Description copied from class: PerColumnSecondaryIndex

insert a column to the index

Specified by:

insert in class PerColumnSecondaryIndex

Parameters:

rowKey - the underlying row key which is indexed

cell - all the column info

update

public void update(java.nio.ByteBuffer rowKey,
          Cell oldCol,
          Cell col,
          OpOrder.Group opGroup)

Description copied from class: PerColumnSecondaryIndex

update a column from the index

Specified by:

update in class PerColumnSecondaryIndex

Parameters:

rowKey - the underlying row key which is indexed

oldCol - the previous column info

col - all the column info

removeIndex

public void removeIndex(java.nio.ByteBuffer columnName)

Description copied from class: SecondaryIndex

Delete all files and references to this index

Specified by:

removeIndex in class SecondaryIndex

Parameters:

columnName - the indexed column to remove

forceBlockingFlush

public void forceBlockingFlush()

Description copied from class: SecondaryIndex

Forces this indexes' in memory data to disk

Specified by:

forceBlockingFlush in class SecondaryIndex

invalidate

public void invalidate()

Description copied from class: SecondaryIndex

Remove the index and unregisters this index's mbean if one exists

Specified by:

invalidate in class SecondaryIndex

truncateBlocking

public void truncateBlocking(long truncatedAt)

Description copied from class: SecondaryIndex

Truncate all the data from the current index

Specified by:

truncateBlocking in class SecondaryIndex

Parameters:

truncatedAt - The truncation timestamp, all data before that timestamp should be rejected.

getIndexCfs

public ColumnFamilyStore getIndexCfs()

Description copied from class: SecondaryIndex

Allow access to the underlying column family store if there is one

Specified by:

getIndexCfs in class SecondaryIndex

Returns:

the underlying column family store or null

getIndexName

public java.lang.String getIndexName()

Specified by:

getIndexName in class SecondaryIndex

Returns:

The name of the index

reload

public void reload()

Description copied from class: SecondaryIndex

Reload an existing index following a change to its configuration, or that of the indexed column(s). Differs from init() in that we expect expect new resources (such as CFS for a KEYS index) to be created by init() but not here

Specified by:

reload in class SecondaryIndex

estimateResultRows

public long estimateResultRows()

Specified by:

estimateResultRows in class SecondaryIndex