org.apache.cassandra.db.index.composites

Class CompositesIndexIncludingCollectionKey

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

org.apache.cassandra.db.index.composites.CompositesIndexIncludingCollectionKey

Direct Known Subclasses:

CompositesIndexOnCollectionKey, CompositesIndexOnCollectionKeyAndValue

public abstract class CompositesIndexIncludingCollectionKey
extends CompositesIndex

Common superclass for indexes that capture collection keys, including indexes on such keys themselves. A cell indexed by this index will have the general form: ck_0 ... ck_n c_name [col_elt] : v where ck_i are the cluster keys, c_name the CQL3 column name, col_elt the collection element that we want to index (which may or may not be there depending on whether c_name is the collection we're indexing), and v the cell value. Such a cell is indexed if c_name is the indexed collection (in which case we are guaranteed to have col_elt). The index entry can be viewed in the following way: - the row key is determined by subclasses of this type. - the cell name will be 'rk ck_0 ... ck_n' where rk is the row key of the initial cell.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.db.index.composites.CompositesIndex

CompositesIndex.IndexedEntry

Field Summary

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

columnDef, indexCfs

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

baseCfs, columnDefs, CUSTOM_INDEX_OPTION_NAME, INDEX_ENTRIES_OPTION_NAME, INDEX_KEYS_OPTION_NAME, INDEX_VALUES_OPTION_NAME, keyComparator, logger

Constructor Summary

Constructors

Constructor and Description
CompositesIndexIncludingCollectionKey()

Method Summary

Modifier and Type	Method and Description
static CellNameType	buildIndexComparator(CFMetaData baseMetadata, ColumnDefinition columnDef)
CompositesIndex.IndexedEntry	decodeEntry(DecoratedKey indexedValue, Cell indexEntry)
boolean	indexes(CellName name) Returns true if the provided cell name is indexed by this secondary index.
protected Composite	makeIndexColumnPrefix(java.nio.ByteBuffer rowKey, Composite cellName)

Methods inherited from class org.apache.cassandra.db.index.composites.CompositesIndex

create, createSecondaryIndexSearcher, delete, getExpressionComparator, getIndexComparator, getIndexComparator, isStale, makeIndexColumnName, validateOptions

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

delete, deleteForCleanup, estimateResultRows, expressionString, forceBlockingFlush, getIndexCfs, getIndexedValue, getIndexKeyComparator, getIndexName, init, insert, invalidate, reload, removeIndex, truncateBlocking, update, validate

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, getBaseCfs, getColumnDefs, getIndexKeyFor, indexes, isIndexBuilt, isQueryable, setIndexBuilt, setIndexRemoved, supportsOperator, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositesIndexIncludingCollectionKey

public CompositesIndexIncludingCollectionKey()

Method Detail

buildIndexComparator

public static CellNameType buildIndexComparator(CFMetaData baseMetadata,
                                                ColumnDefinition columnDef)

makeIndexColumnPrefix

protected Composite makeIndexColumnPrefix(java.nio.ByteBuffer rowKey,
                                          Composite cellName)

Specified by:

makeIndexColumnPrefix in class CompositesIndex

decodeEntry

public CompositesIndex.IndexedEntry decodeEntry(DecoratedKey indexedValue,
                                                Cell indexEntry)

Specified by:

decodeEntry in class CompositesIndex

indexes

public boolean indexes(CellName name)

Description copied from class: SecondaryIndex

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

Specified by:

indexes in class SecondaryIndex