Package org.apache.cassandra.index.internal

Class CassandraIndexSearcher

java.lang.Object

org.apache.cassandra.index.internal.CassandraIndexSearcher

All Implemented Interfaces:

Index.Searcher

Direct Known Subclasses:

CompositesSearcher, KeysSearcher

public abstract class CassandraIndexSearcher
extends Object
implements Index.Searcher

Field Summary

Fields

Modifier and Type	Field	Description
protected final ReadCommand	command
protected final CassandraIndex	index

Constructor Summary

Constructors

Constructor	Description
CassandraIndexSearcher(ReadCommand command, RowFilter.Expression expression, CassandraIndex index)

Method Summary

Modifier and Type	Method	Description
ReadCommand	command()	Returns the ReadCommand for which this searcher has been created.
protected Clustering<?>	makeIndexClustering(ByteBuffer rowKey, Clustering<?> clustering)
protected abstract UnfilteredPartitionIterator	queryDataFromIndex(DecoratedKey indexKey, RowIterator indexHits, ReadCommand command, ReadExecutionController executionController)
UnfilteredPartitionIterator	search(ReadExecutionController executionController)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.index.Index.Searcher

filterReplicaFilteringProtection

Field Details

index

protected final CassandraIndex index

command

protected final ReadCommand command

Constructor Details

CassandraIndexSearcher

public CassandraIndexSearcher(ReadCommand command,
 RowFilter.Expression expression,
 CassandraIndex index)

Method Details

command

public ReadCommand command()

Description copied from interface: Index.Searcher

Returns the ReadCommand for which this searcher has been created.

Specified by:

command in interface Index.Searcher

Returns:

the base read command

search

public UnfilteredPartitionIterator search(ReadExecutionController executionController)

Specified by:

search in interface Index.Searcher

Parameters:

executionController - the collection of OpOrder.Groups which the ReadCommand is being performed under.

Returns:

partitions from the base table matching the criteria of the search.

makeIndexClustering

protected Clustering<?> makeIndexClustering(ByteBuffer rowKey,
 Clustering<?> clustering)

queryDataFromIndex

protected abstract UnfilteredPartitionIterator queryDataFromIndex(DecoratedKey indexKey,
 RowIterator indexHits,
 ReadCommand command,
 ReadExecutionController executionController)