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

Class MemoryIndex

java.lang.Object

org.apache.cassandra.index.sai.memory.MemoryIndex

All Implemented Interfaces:

MemtableOrdering

Direct Known Subclasses:

TrieMemoryIndex, VectorMemoryIndex

public abstract class MemoryIndex
extends Object
implements MemtableOrdering

Field Summary

Fields

Modifier and Type	Field	Description
protected final StorageAttachedIndex	index

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MemoryIndex(StorageAttachedIndex index)

Method Summary

Modifier and Type	Method	Description
abstract long	add(DecoratedKey key, Clustering<?> clustering, ByteBuffer value)
abstract ByteBuffer	getMaxTerm()
abstract ByteBuffer	getMinTerm()
abstract boolean	isEmpty()
abstract Iterator<Pair<ByteComparable,PrimaryKeys>>	iterator()	Iterate all Term->PrimaryKeys mappings in sorted order
abstract KeyRangeIterator	search(QueryContext queryContext, Expression expression, AbstractBounds<PartitionPosition> keyRange)
abstract long	update(DecoratedKey key, Clustering<?> clustering, ByteBuffer oldValue, ByteBuffer newValue)
abstract SegmentMetadata.ComponentMetadataMap	writeDirect(IndexDescriptor indexDescriptor, IndexIdentifier indexIdentifier, Function<PrimaryKey,Integer> postingTransformer)

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.sai.memory.MemtableOrdering

orderBy, orderResultsBy

Field Details

index

protected final StorageAttachedIndex index

Constructor Details

MemoryIndex

protected MemoryIndex(StorageAttachedIndex index)

Method Details

add

public abstract long add(DecoratedKey key,
 Clustering<?> clustering,
 ByteBuffer value)

update

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

search

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

isEmpty

public abstract boolean isEmpty()

getMinTerm

public abstract ByteBuffer getMinTerm()

getMaxTerm

public abstract ByteBuffer getMaxTerm()

iterator

public abstract Iterator<Pair<ByteComparable,PrimaryKeys>> iterator()

Iterate all Term->PrimaryKeys mappings in sorted order

writeDirect

public abstract SegmentMetadata.ComponentMetadataMap writeDirect(IndexDescriptor indexDescriptor,
 IndexIdentifier indexIdentifier,
 Function<PrimaryKey,Integer> postingTransformer)
                                                          throws IOException

Throws:

IOException