org.apache.cassandra.io
Class IndexSummary

java.lang.Object
  org.apache.cassandra.io.IndexSummary

public class IndexSummary
extends java.lang.Object

Nested Class Summary

static class

IndexSummary.KeyPosition This is a simple container for the index Key and its corresponding position in the index file.

Field Summary

static int

INDEX_INTERVAL Every 128th index entry is loaded into memory so we know where to start looking for the actual key w/o seeking

Constructor Summary

IndexSummary()

Method Summary

void	complete()
java.util.List<IndexSummary.KeyPosition>	getIndexPositions()
SSTable.PositionSize	getSpannedPosition(IndexSummary.KeyPosition sampledPosition)
SSTable.PositionSize	getSpannedPosition(long nextIndexPosition)
void	maybeAddEntry(DecoratedKey decoratedKey, long dataPosition, long dataSize, long indexPosition, long nextIndexPosition)

Methods inherited from class java.lang.Object

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

Field Detail

INDEX_INTERVAL

public static final int INDEX_INTERVAL

Every 128th index entry is loaded into memory so we know where to start looking for the actual key w/o seeking

See Also:

Constant Field Values

Constructor Detail

IndexSummary

public IndexSummary()

Method Detail

maybeAddEntry

public void maybeAddEntry(DecoratedKey decoratedKey,
                          long dataPosition,
                          long dataSize,
                          long indexPosition,
                          long nextIndexPosition)

getIndexPositions

public java.util.List<IndexSummary.KeyPosition> getIndexPositions()

complete

public void complete()

getSpannedPosition

public SSTable.PositionSize getSpannedPosition(IndexSummary.KeyPosition sampledPosition)

getSpannedPosition

public SSTable.PositionSize getSpannedPosition(long nextIndexPosition)