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

Class AbstractExternalResult<T>

java.lang.Object

org.apache.ignite.internal.processors.query.h2.disk.AbstractExternalResult<T>

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

GroupedExternalResult, PlainExternalResult, SortedExternalResult

public abstract class AbstractExternalResult<T>
extends Object
implements AutoCloseable

Basic class for external result.

Field Summary

Fields

Modifier and Type	Field and Description
protected ExternalResultData<T>	data File with spilled rows data.
protected IgniteLogger	log Logger.
protected QueryMemoryManager	memMgr Memory manager.
protected org.apache.ignite.internal.processors.query.h2.H2MemoryTracker	memTracker Memory tracker.
protected AbstractExternalResult	parent Parent result.
protected int	size Current size in rows.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractExternalResult(AbstractExternalResult parent) Used for ResultInterface.createShallowCopy(SessionInterface) only.
protected	AbstractExternalResult(org.gridgain.internal.h2.engine.Session ses, boolean useHashIdx, long initSize, Class<T> cls)

Method Summary

Modifier and Type	Method and Description
void	close()
protected void	closeChild()
protected boolean	needToSpill()
protected void	onChildCreated()
protected void	onClose()
int	size()

Methods inherited from class java.lang.Object

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

Field Detail

log

protected final IgniteLogger log

Logger.

size

protected int size

Current size in rows.

memTracker

protected final org.apache.ignite.internal.processors.query.h2.H2MemoryTracker memTracker

Memory tracker.

memMgr

protected final QueryMemoryManager memMgr

Memory manager.

parent

protected final AbstractExternalResult parent

Parent result.

data

protected final ExternalResultData<T> data

File with spilled rows data.

Constructor Detail

AbstractExternalResult

protected AbstractExternalResult(org.gridgain.internal.h2.engine.Session ses,
                                 boolean useHashIdx,
                                 long initSize,
                                 Class<T> cls)

Parameters:

useHashIdx - Whether to use hash index.

initSize - Initial size.

cls - Class of stored data.

useHashIdx - Flag whether to use hash index.

initSize - Initial result set size.

AbstractExternalResult

protected AbstractExternalResult(AbstractExternalResult parent)

Used for ResultInterface.createShallowCopy(SessionInterface) only.

Parameters:

parent - Parent result.

Method Detail

needToSpill

protected boolean needToSpill()

onChildCreated

protected void onChildCreated()

close

public void close()

Specified by:

close in interface AutoCloseable

closeChild

protected void closeChild()

onClose

protected void onClose()

size

public int size()