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

Class GridH2IndexBase

java.lang.Object

BaseIndex

org.apache.ignite.internal.processors.query.h2.opt.GridH2IndexBase

Direct Known Subclasses:

H2PkHashIndex, H2TreeIndex

public abstract class GridH2IndexBase
extends BaseIndex

Index base.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	GridH2IndexBase.SegmentKey

Field Summary

Fields

Modifier and Type	Field and Description
protected <any>	ctx
protected static <any>	EMPTY_CURSOR Empty cursor.

Constructor Summary

Constructors

Constructor and Description
GridH2IndexBase()

Method Summary

Modifier and Type	Method and Description
void	add(Session ses, Row row)
static <Z> void	bubbleUp(Z[] arr, int off, Comparator<Z> cmp)
void	checkRename()
void	close(Session ses)
IndexLookupBatch	createLookupBatch(TableFilter[] filters, int filter)
void	destroy(boolean rmv) Attempts to destroys index and release all the resources.
protected H2Cursor	doFind0(IgniteTree t, SearchRow first, SearchRow last, <any> filter)
protected <any>	filter(GridH2QueryContext qctx)
long	getDiskSpaceUsed()
int	getDistributedMultiplier(Session ses, TableFilter[] filters, int filter)
GridH2Table	getTable()
protected void	initDistributedJoinMessaging(GridH2Table tbl)
boolean	needRebuild()
abstract GridH2Row	put(GridH2Row row) Puts row.
abstract boolean	putx(GridH2Row row) Puts row.
void	refreshColumnIds() Re-assign column ids after removal of column(s).
abstract GridH2Row	remove(SearchRow row) Remove row from index.
void	remove(Session ses)
void	remove(Session ses, Row row)
void	removeChildrenAndResources(Session session)
abstract boolean	removex(SearchRow row) Removes row from index.
protected int	segmentForPartition(int partition)
protected int	segmentForRow(SearchRow row)
protected abstract int	segmentsCount()
protected int	threadLocalSegment()
protected <K,V> <any>	treeForRead(int segment)
void	truncate(Session ses)

Methods inherited from class java.lang.Object

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

Field Detail

ctx

protected <any> ctx

EMPTY_CURSOR

protected static final <any> EMPTY_CURSOR

Empty cursor.

Constructor Detail

GridH2IndexBase

public GridH2IndexBase()

Method Detail

initDistributedJoinMessaging

protected final void initDistributedJoinMessaging(GridH2Table tbl)

Parameters:

tbl - Table.

close

public final void close(Session ses)

destroy

public void destroy(boolean rmv)

Attempts to destroys index and release all the resources. We use this method instead of close(Session) because that method is used by H2 internally.

Parameters:

rmv - Flag remove.

threadLocalSegment

protected int threadLocalSegment()

Returns:

Index segment ID for current query context.

put

public abstract GridH2Row put(GridH2Row row)

Puts row.

Parameters:

row - Row.

Returns:

Existing row or null.

putx

public abstract boolean putx(GridH2Row row)

Puts row.

Parameters:

row - Row.

Returns:

True if existing row row has been replaced.

remove

public abstract GridH2Row remove(SearchRow row)

Remove row from index.

Parameters:

row - Row.

Returns:

Removed row.

removex

public abstract boolean removex(SearchRow row)

Removes row from index.

Parameters:

row - Row.

Returns:

True if row has been removed.

getDistributedMultiplier

public final int getDistributedMultiplier(Session ses,
                                          TableFilter[] filters,
                                          int filter)

Parameters:

ses - Session.

filters - All joined table filters.

filter - Current filter.

Returns:

Multiplier.

getTable

public GridH2Table getTable()

getDiskSpaceUsed

public long getDiskSpaceUsed()

checkRename

public void checkRename()

add

public void add(Session ses,
                Row row)

remove

public void remove(Session ses,
                   Row row)

remove

public void remove(Session ses)

truncate

public void truncate(Session ses)

needRebuild

public boolean needRebuild()

createLookupBatch

public IndexLookupBatch createLookupBatch(TableFilter[] filters,
                                          int filter)

removeChildrenAndResources

public void removeChildrenAndResources(Session session)

filter

protected <any> filter(GridH2QueryContext qctx)

Parameters:

qctx - Query context.

Returns:

Row filter.

bubbleUp

public static <Z> void bubbleUp(Z[] arr,
                                int off,
                                Comparator<Z> cmp)

Parameters:

arr - Array.

off - Offset.

cmp - Comparator.

segmentsCount

protected abstract int segmentsCount()

Returns:

Index segments count.

segmentForPartition

protected int segmentForPartition(int partition)

Parameters:

partition - Partition idx.

Returns:

Segment ID for given key

segmentForRow

protected int segmentForRow(SearchRow row)

Parameters:

row - Table row.

Returns:

Segment ID for given row.

treeForRead

protected <K,V> <any> treeForRead(int segment)

Parameters:

segment - Segment Id.

Returns:

Snapshot for requested segment if there is one.

doFind0

protected H2Cursor doFind0(IgniteTree t,
                           SearchRow first,
                           SearchRow last,
                           <any> filter)

Parameters:

t - Tree.

first - Lower bound.

last - Upper bound always inclusive.

filter - Filter.

Returns:

Iterator over rows in given range.

refreshColumnIds

public void refreshColumnIds()

Re-assign column ids after removal of column(s).