Package org.apache.cassandra.index.sai.memory

Class MemtableIndex

java.lang.Object

org.apache.cassandra.index.sai.memory.MemtableIndex

All Implemented Interfaces:

MemtableOrdering

public class MemtableIndex
extends java.lang.Object
implements MemtableOrdering

Constructor Summary

Constructors

Constructor	Description
MemtableIndex(StorageAttachedIndex index)

Method Summary

Modifier and Type	Method	Description
long	estimatedMemoryUsed()
java.nio.ByteBuffer	getMaxTerm()
java.nio.ByteBuffer	getMinTerm()
long	index(DecoratedKey key, Clustering<?> clustering, java.nio.ByteBuffer value)
boolean	isEmpty()
java.util.Iterator<Pair<ByteComparable,PrimaryKeys>>	iterator()
KeyRangeIterator	limitToTopResults(java.util.List<PrimaryKey> primaryKeys, Expression expression, int limit)	Filter the given list of PrimaryKey results to the top `limit` results corresponding to the given expression, Returns an iterator over the results that is put back in token order.
KeyRangeIterator	search(QueryContext queryContext, Expression expression, AbstractBounds<PartitionPosition> keyRange)
long	update(DecoratedKey key, Clustering<?> clustering, java.nio.ByteBuffer oldValue, java.nio.ByteBuffer newValue)
long	writeCount()
SegmentMetadata.ComponentMetadataMap	writeDirect(IndexDescriptor indexDescriptor, IndexIdentifier indexIdentifier, java.util.function.Function<PrimaryKey,java.lang.Integer> postingTransformer)

Methods inherited from class java.lang.Object

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

Constructor Detail

MemtableIndex

public MemtableIndex(StorageAttachedIndex index)

Method Detail

writeCount

public long writeCount()

estimatedMemoryUsed

public long estimatedMemoryUsed()

isEmpty

public boolean isEmpty()

getMinTerm

public java.nio.ByteBuffer getMinTerm()

getMaxTerm

public java.nio.ByteBuffer getMaxTerm()

index

public long index(DecoratedKey key,
                  Clustering<?> clustering,
                  java.nio.ByteBuffer value)

update

public long update(DecoratedKey key,
                   Clustering<?> clustering,
                   java.nio.ByteBuffer oldValue,
                   java.nio.ByteBuffer newValue)

search

public KeyRangeIterator search(QueryContext queryContext,
                               Expression expression,
                               AbstractBounds<PartitionPosition> keyRange)

iterator

public java.util.Iterator<Pair<ByteComparable,PrimaryKeys>> iterator()

writeDirect

public SegmentMetadata.ComponentMetadataMap writeDirect(IndexDescriptor indexDescriptor,
                                                        IndexIdentifier indexIdentifier,
                                                        java.util.function.Function<PrimaryKey,java.lang.Integer> postingTransformer)
                                                 throws java.io.IOException

Throws:

java.io.IOException

limitToTopResults

public KeyRangeIterator limitToTopResults(java.util.List<PrimaryKey> primaryKeys,
                                          Expression expression,
                                          int limit)

Description copied from interface: MemtableOrdering

Filter the given list of PrimaryKey results to the top `limit` results corresponding to the given expression, Returns an iterator over the results that is put back in token order.

Assumes that the given list spans the same rows as the implementing index's segment.

Specified by:

limitToTopResults in interface MemtableOrdering