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

Class H2TreeIndex

java.lang.Object

BaseIndex

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

org.apache.ignite.internal.processors.query.h2.database.H2TreeIndex

public class H2TreeIndex
extends GridH2IndexBase

H2 Index over BPlusTree.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.ignite.internal.processors.query.h2.opt.GridH2IndexBase

GridH2IndexBase.SegmentKey

Field Summary

Fields

Modifier and Type	Field and Description
static int	IGNITE_MAX_INDEX_PAYLOAD_SIZE_DEFAULT Default value for IGNITE_MAX_INDEX_PAYLOAD_SIZE

Fields inherited from class org.apache.ignite.internal.processors.query.h2.opt.GridH2IndexBase

ctx, EMPTY_CURSOR

Constructor Summary

Constructors

Constructor and Description
H2TreeIndex(<any> cctx, H2RowCache rowCache, GridH2Table tbl, String idxName, boolean pk, boolean affinityKey, List<IndexColumn> colsList, int inlineSize, int segmentsCnt)

Method Summary

Modifier and Type	Method and Description
boolean	canGetFirstOrLast()
void	destroy(boolean rmvIndex) 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)
Cursor	find(Session ses, SearchRow lower, SearchRow upper)
Cursor	findFirstOrLast(Session session, boolean b)
double	getCost(Session ses, int[] masks, TableFilter[] filters, int filter, SortOrder sortOrder, HashSet<Column> allColumnsSet)
long	getRowCount(Session ses)
long	getRowCountApproximation()
GridH2Row	put(GridH2Row row) Puts row.
boolean	putx(GridH2Row row) Puts row.
boolean	rebuildRequired() Check if index exists in store.
void	refreshColumnIds() Re-assign column ids after removal of column(s).
GridH2Row	remove(SearchRow row) Remove row from index.
boolean	removex(SearchRow row) Removes row from index.
protected int	segmentsCount()
protected H2Tree	treeForRead(int segment)

Methods inherited from class org.apache.ignite.internal.processors.query.h2.opt.GridH2IndexBase

add, bubbleUp, checkRename, close, createLookupBatch, getDiskSpaceUsed, getDistributedMultiplier, getTable, initDistributedJoinMessaging, needRebuild, remove, removeChildrenAndResources, segmentForPartition, segmentForRow, threadLocalSegment, truncate

Methods inherited from class java.lang.Object

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

Field Detail

IGNITE_MAX_INDEX_PAYLOAD_SIZE_DEFAULT

public static final int IGNITE_MAX_INDEX_PAYLOAD_SIZE_DEFAULT

Default value for IGNITE_MAX_INDEX_PAYLOAD_SIZE

See Also:

Constant Field Values

Constructor Detail

H2TreeIndex

public H2TreeIndex(<any> cctx,
                   H2RowCache rowCache,
                   GridH2Table tbl,
                   String idxName,
                   boolean pk,
                   boolean affinityKey,
                   List<IndexColumn> colsList,
                   int inlineSize,
                   int segmentsCnt)
            throws IgniteCheckedException

Parameters:

cctx - Cache context.

tbl - Table.

idxName - Index name.

pk - Primary key.

affinityKey - true for affinity key.

colsList - Index columns.

inlineSize - Inline size.

Throws:

IgniteCheckedException - If failed.

Method Detail

rebuildRequired

public boolean rebuildRequired()

Check if index exists in store.

Returns:

True if exists.

segmentsCount

protected int segmentsCount()

Specified by:

segmentsCount in class GridH2IndexBase

Returns:

Index segments count.

find

public Cursor find(Session ses,
                   SearchRow lower,
                   SearchRow upper)

put

public GridH2Row put(GridH2Row row)

Puts row.

Specified by:

put in class GridH2IndexBase

Parameters:

row - Row.

Returns:

Existing row or null.

putx

public boolean putx(GridH2Row row)

Puts row.

Specified by:

putx in class GridH2IndexBase

Parameters:

row - Row.

Returns:

True if existing row row has been replaced.

remove

public GridH2Row remove(SearchRow row)

Remove row from index.

Specified by:

remove in class GridH2IndexBase

Parameters:

row - Row.

Returns:

Removed row.

removex

public boolean removex(SearchRow row)

Removes row from index.

Specified by:

removex in class GridH2IndexBase

Parameters:

row - Row.

Returns:

True if row has been removed.

getCost

public double getCost(Session ses,
                      int[] masks,
                      TableFilter[] filters,
                      int filter,
                      SortOrder sortOrder,
                      HashSet<Column> allColumnsSet)

getRowCount

public long getRowCount(Session ses)

getRowCountApproximation

public long getRowCountApproximation()

canGetFirstOrLast

public boolean canGetFirstOrLast()

findFirstOrLast

public Cursor findFirstOrLast(Session session,
                              boolean b)

destroy

public void destroy(boolean rmvIndex)

Attempts to destroys index and release all the resources. We use this method instead of GridH2IndexBase.close(Session) because that method is used by H2 internally.

Overrides:

destroy in class GridH2IndexBase

Parameters:

rmvIndex - Flag remove.

treeForRead

protected H2Tree treeForRead(int segment)

Overrides:

treeForRead in class GridH2IndexBase

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)

Overrides:

doFind0 in class GridH2IndexBase

Parameters:

t - Tree.

first - Lower bound.

last - Upper bound always inclusive.

filter - Filter.

Returns:

Iterator over rows in given range.

filter

protected <any> filter(GridH2QueryContext qctx)

Overrides:

filter in class GridH2IndexBase

Parameters:

qctx - Query context.

Returns:

Row filter.

refreshColumnIds

public void refreshColumnIds()

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

Overrides:

refreshColumnIds in class GridH2IndexBase