org.apache.cassandra.db.index.keys
Class KeysIndex

java.lang.Object
  org.apache.cassandra.db.index.SecondaryIndex
      org.apache.cassandra.db.index.PerColumnSecondaryIndex
          org.apache.cassandra.db.index.AbstractSimplePerColumnSecondaryIndex
              org.apache.cassandra.db.index.keys.KeysIndex

public class KeysIndex
extends AbstractSimplePerColumnSecondaryIndex

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

baseCfs, columnDefs, CUSTOM_INDEX_OPTION_NAME, logger

Constructor Summary

KeysIndex()

Method Summary

SecondaryIndexSearcher	createSecondaryIndexSearcher(java.util.Set<java.nio.ByteBuffer> columns) Called at query time Creates a implementation specific searcher instance for this index type
protected AbstractType	getExpressionComparator()
void	init(ColumnDefinition columnDef)
protected java.nio.ByteBuffer	makeIndexColumnName(java.nio.ByteBuffer rowKey, IColumn column)
void	validateOptions() Validates the index_options passed in the ColumnDef

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

delete, expressionString, forceBlockingFlush, getIndexCfs, getIndexName, getLiveSize, init, insert, invalidate, reload, removeIndex, truncate, update

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

getNameForSystemTable, validate

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

buildIndexAsync, buildIndexBlocking, createInstance, getBaseCfs, getColumnDefs, getIndexComparator, getIndexKeyFor, indexes, isIndexBuilt, setIndexBuilt, setIndexRemoved

Methods inherited from class java.lang.Object

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

Constructor Detail

KeysIndex

public KeysIndex()

Method Detail

init

public void init(ColumnDefinition columnDef)

Specified by:

init in class AbstractSimplePerColumnSecondaryIndex

makeIndexColumnName

protected java.nio.ByteBuffer makeIndexColumnName(java.nio.ByteBuffer rowKey,
                                                  IColumn column)

Specified by:

makeIndexColumnName in class AbstractSimplePerColumnSecondaryIndex

createSecondaryIndexSearcher

public SecondaryIndexSearcher createSecondaryIndexSearcher(java.util.Set<java.nio.ByteBuffer> columns)

Description copied from class: SecondaryIndex

Called at query time Creates a implementation specific searcher instance for this index type

Specified by:

createSecondaryIndexSearcher in class SecondaryIndex

Parameters:

columns - the list of columns which belong to this index type

Returns:

the secondary index search impl

validateOptions

public void validateOptions()
                     throws ConfigurationException

Description copied from class: SecondaryIndex

Validates the index_options passed in the ColumnDef

Specified by:

validateOptions in class SecondaryIndex

Throws:

ConfigurationException

getExpressionComparator

protected AbstractType getExpressionComparator()

Specified by:

getExpressionComparator in class AbstractSimplePerColumnSecondaryIndex