org.apache.cassandra.db.index.composites
Class CompositesIndex

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.composites.CompositesIndex

public class CompositesIndex
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

static java.lang.String

PREFIX_SIZE_OPTION

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

baseCfs, columnDefs, CUSTOM_INDEX_OPTION_NAME, logger

Constructor Summary

CompositesIndex()

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()
boolean	indexes(java.nio.ByteBuffer name) Returns true if the provided column name is indexed by this secondary index.
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, isIndexBuilt, setIndexBuilt, setIndexRemoved

Methods inherited from class java.lang.Object

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

Field Detail

PREFIX_SIZE_OPTION

public static final java.lang.String PREFIX_SIZE_OPTION

See Also:

Constant Field Values

Constructor Detail

CompositesIndex

public CompositesIndex()

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

getExpressionComparator

protected AbstractType getExpressionComparator()

Specified by:

getExpressionComparator in class AbstractSimplePerColumnSecondaryIndex

indexes

public boolean indexes(java.nio.ByteBuffer name)

Description copied from class: SecondaryIndex

Returns true if the provided column name is indexed by this secondary index. The default implement checks whether the name is one the columnDef name, but this should be overriden but subclass if needed.

Overrides:

indexes in class SecondaryIndex

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