org.apache.ignite.internal.processors.query.h2.disk

Class ExternalResultHashIndex

java.lang.Object

org.apache.ignite.internal.processors.query.h2.disk.ExternalResultHashIndex

All Implemented Interfaces:

AutoCloseable

public class ExternalResultHashIndex
extends Object
implements AutoCloseable

Disk-based hash index for the sorted external result. Open addressing hashing scheme is used.

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	contains(org.gridgain.internal.h2.value.ValueRow key) Finds row address in the hash index by its key.
long	get(org.gridgain.internal.h2.value.ValueRow key) Finds row address in the hash index by its key.
void	put(org.gridgain.internal.h2.value.ValueRow key, long rowAddr) Puts row into the hash index.
long	remove(org.gridgain.internal.h2.value.ValueRow key) Removes row from the hash index.

Methods inherited from class java.lang.Object

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

Method Detail

put

public void put(org.gridgain.internal.h2.value.ValueRow key,
                long rowAddr)

Puts row into the hash index.

Parameters:

key - Row distinct key.

rowAddr - Row address in the rows file.

get

public long get(org.gridgain.internal.h2.value.ValueRow key)

Finds row address in the hash index by its key.

Parameters:

key - Row distinct key.

Returns:

Row address in the rows file.

contains

public boolean contains(org.gridgain.internal.h2.value.ValueRow key)

Finds row address in the hash index by its key.

Parameters:

key - Row distinct key.

Returns:

Whether row is in the file.

remove

public long remove(org.gridgain.internal.h2.value.ValueRow key)

Removes row from the hash index.

Parameters:

key - Row distinct key

Returns:

Row address in the rows file.

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception