Package org.apache.cassandra.index.sai.disk.v1.trie

Class LiteralIndexWriter

java.lang.Object

org.apache.cassandra.index.sai.disk.v1.trie.LiteralIndexWriter

All Implemented Interfaces:

SegmentWriter

@NotThreadSafe
public class LiteralIndexWriter
extends Object
implements SegmentWriter

Builds an on-disk inverted index structure: terms dictionary and postings lists.

Constructor Summary

Constructors

Constructor	Description
LiteralIndexWriter(IndexDescriptor indexDescriptor, IndexIdentifier indexIdentifier)

Method Summary

Modifier and Type	Method	Description
long	getNumberOfRows()	Returns the number of rows written to the segment
SegmentMetadata.ComponentMetadataMap	writeCompleteSegment(Iterator<IndexEntry> iterator)	Appends a set of terms and associated postings to their respective overall SSTable component files.

Methods inherited from class java.lang.Object

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

Constructor Details

LiteralIndexWriter

public LiteralIndexWriter(IndexDescriptor indexDescriptor,
 IndexIdentifier indexIdentifier)

Method Details

writeCompleteSegment

public SegmentMetadata.ComponentMetadataMap writeCompleteSegment(Iterator<IndexEntry> iterator)
                                                          throws IOException

Description copied from interface: SegmentWriter

Appends a set of terms and associated postings to their respective overall SSTable component files.

Specified by:

writeCompleteSegment in interface SegmentWriter

Parameters:

iterator - an Iterator of IndexEntrys sorted in term order.

Returns:

metadata describing the location of this inverted index in the overall SSTable terms and postings component files

Throws:

IOException

getNumberOfRows

public long getNumberOfRows()

Description copied from interface: SegmentWriter

Returns the number of rows written to the segment

Specified by:

getNumberOfRows in interface SegmentWriter

Returns:

the number of rows