org.gridgain.grid.spi.indexing.h2.opt

Class GridH2TreeIndex

java.lang.Object

org.h2.engine.DbObjectBase

org.h2.schema.SchemaObjectBase

org.h2.index.BaseIndex

org.gridgain.grid.spi.indexing.h2.opt.GridH2IndexBase

org.gridgain.grid.spi.indexing.h2.opt.GridH2TreeIndex

All Implemented Interfaces:

Comparator<GridSearchRowPointer>, org.h2.engine.DbObject, org.h2.index.Index, org.h2.schema.SchemaObject

public class GridH2TreeIndex
extends GridH2IndexBase
implements Comparator<GridSearchRowPointer>

Base class for snapshotable tree indexes.

Nested Class Summary

Nested classes/interfaces inherited from class org.gridgain.grid.spi.indexing.h2.opt.GridH2IndexBase

GridH2IndexBase.FilteringIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected ConcurrentNavigableMap<GridSearchRowPointer,GridH2Row>	tree

Fields inherited from class org.gridgain.grid.spi.indexing.h2.opt.GridH2IndexBase

filters, keyCol, valCol

Fields inherited from class org.h2.index.BaseIndex

columnIds, columns, indexColumns, indexType, isMultiVersion, table

Fields inherited from class org.h2.engine.DbObjectBase

comment, database, trace

Fields inherited from interface org.h2.engine.DbObject

AGGREGATE, COMMENT, CONSTANT, CONSTRAINT, FUNCTION_ALIAS, INDEX, RIGHT, ROLE, SCHEMA, SEQUENCE, SETTING, TABLE_OR_VIEW, TRIGGER, USER, USER_DATATYPE

Constructor Summary

Constructors

Constructor and Description
GridH2TreeIndex(String name, GridH2Table tbl, boolean unique, int keyCol, int valCol, org.gridgain.grid.util.offheap.unsafe.GridUnsafeMemory memory, org.h2.table.IndexColumn... cols) Constructor with index initialization.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canFindNext()
boolean	canGetFirstOrLast()
void	close() Closes index and releases resources.
void	close(org.h2.engine.Session ses)
int	compare(GridSearchRowPointer r1, GridSearchRowPointer r2)
org.h2.index.Cursor	find(org.h2.engine.Session ses, org.h2.result.SearchRow first, org.h2.result.SearchRow last)
org.h2.index.Cursor	findFirstOrLast(org.h2.engine.Session ses, boolean first)
org.h2.index.Cursor	findNext(org.h2.engine.Session ses, org.h2.result.SearchRow higherThan, org.h2.result.SearchRow last)
GridH2AbstractKeyValueRow	findOne(GridSearchRowPointer row) Finds row with key equal one in given search row.
double	getCost(org.h2.engine.Session ses, int[] masks, org.h2.table.TableFilter filter, org.h2.result.SortOrder sortOrder)
long	getRowCount(org.h2.engine.Session ses)
long	getRowCountApproximation()
GridH2Row	put(GridH2Row row, boolean ifAbsent) Put row if absent.
GridH2TreeIndex	rebuild(org.gridgain.grid.util.offheap.unsafe.GridUnsafeMemory memory) If the index supports rebuilding it has to creates its own copy.
void	releaseSnapshot() Releases snapshot for current thread.
GridH2Row	remove(org.h2.result.SearchRow row) Remove row from index.
Object	takeSnapshot(Object s) Takes snapshot to be used in current thread.
String	toString()

Methods inherited from class org.gridgain.grid.spi.indexing.h2.opt.GridH2IndexBase

add, checkRename, filter, getDiskSpaceUsed, needRebuild, remove, remove, setFiltersForThread, truncate

Methods inherited from class org.h2.index.BaseIndex

canScan, checkIndexColumnTypes, commit, compareRows, containsNullAndAllowMultipleNull, find, getColumnIndex, getColumns, getCostRangeIndex, getCreateSQL, getCreateSQLForCopy, getDropSQL, getDuplicateKeyException, getIndexColumns, getIndexType, getPlanSQL, getRow, getTable, getType, initBaseIndex, isHidden, isRowIdIndex, removeChildrenAndResources, setSortedInsertMode

Methods inherited from class org.h2.schema.SchemaObjectBase

getSchema, getSQL, initSchemaObjectBase

Methods inherited from class org.h2.engine.DbObjectBase

getChildren, getComment, getDatabase, getId, getModificationId, getName, initDbObjectBase, invalidate, isTemporary, rename, setComment, setModified, setObjectName, setTemporary

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Methods inherited from interface org.h2.schema.SchemaObject

getSchema

Methods inherited from interface org.h2.engine.DbObject

getChildren, getComment, getDatabase, getId, getName, getSQL, isTemporary, rename, setComment, setTemporary

Field Detail

tree

protected final ConcurrentNavigableMap<GridSearchRowPointer,GridH2Row> tree

Constructor Detail

GridH2TreeIndex

public GridH2TreeIndex(String name,
               GridH2Table tbl,
               boolean unique,
               int keyCol,
               int valCol,
               org.gridgain.grid.util.offheap.unsafe.GridUnsafeMemory memory,
               org.h2.table.IndexColumn... cols)

Constructor with index initialization.

Parameters:

name - Index name.

tbl - Table.

unique - If this index unique.

keyCol - Primary key column index.

valCol - Value column index.

memory - Memory.

cols - Index columns list.

Method Detail

close

public void close()

Closes index and releases resources.

takeSnapshot

public Object takeSnapshot(@Nullable
                  Object s)

Takes snapshot to be used in current thread. If argument is null it will be taken from current trees.

Overrides:

takeSnapshot in class GridH2IndexBase

Parameters:

s - Map to be used as snapshot if not null.

Returns:

Taken snapshot or given argument back.

releaseSnapshot

public void releaseSnapshot()

Releases snapshot for current thread.

Overrides:

releaseSnapshot in class GridH2IndexBase

close

public void close(org.h2.engine.Session ses)

Specified by:

close in interface org.h2.index.Index

getRowCount

public long getRowCount(@Nullable
               org.h2.engine.Session ses)

Specified by:

getRowCount in interface org.h2.index.Index

getRowCountApproximation

public long getRowCountApproximation()

Specified by:

getRowCountApproximation in interface org.h2.index.Index

compare

public int compare(GridSearchRowPointer r1,
          GridSearchRowPointer r2)

Specified by:

compare in interface Comparator<GridSearchRowPointer>

toString

public String toString()

Overrides:

toString in class org.h2.engine.DbObjectBase

getCost

public double getCost(org.h2.engine.Session ses,
             int[] masks,
             org.h2.table.TableFilter filter,
             org.h2.result.SortOrder sortOrder)

Specified by:

getCost in interface org.h2.index.Index

canFindNext

public boolean canFindNext()

Specified by:

canFindNext in interface org.h2.index.Index

Overrides:

canFindNext in class org.h2.index.BaseIndex

find

public org.h2.index.Cursor find(org.h2.engine.Session ses,
                       @Nullable
                       org.h2.result.SearchRow first,
                       @Nullable
                       org.h2.result.SearchRow last)

Specified by:

find in interface org.h2.index.Index

findNext

public org.h2.index.Cursor findNext(org.h2.engine.Session ses,
                           org.h2.result.SearchRow higherThan,
                           org.h2.result.SearchRow last)

Specified by:

findNext in interface org.h2.index.Index

Overrides:

findNext in class org.h2.index.BaseIndex

findOne

public GridH2AbstractKeyValueRow findOne(GridSearchRowPointer row)

Finds row with key equal one in given search row. WARNING!! Method call must be protected by GridUnsafeMemory.begin() GridUnsafeMemory.end(GridUnsafeMemory.Operation) block.

Parameters:

row - Search row.

Returns:

Row.

canGetFirstOrLast

public boolean canGetFirstOrLast()

Specified by:

canGetFirstOrLast in interface org.h2.index.Index

findFirstOrLast

public org.h2.index.Cursor findFirstOrLast(org.h2.engine.Session ses,
                                  boolean first)

Specified by:

findFirstOrLast in interface org.h2.index.Index

put

public GridH2Row put(GridH2Row row,
            boolean ifAbsent)

Put row if absent.

Specified by:

put in class GridH2IndexBase

Parameters:

row - Row.

ifAbsent - Put only if such a row does not exist.

Returns:

Existing row or null.

remove

public GridH2Row remove(org.h2.result.SearchRow row)

Remove row from index.

Specified by:

remove in class GridH2IndexBase

Parameters:

row - Row.

Returns:

Removed row.

rebuild

public GridH2TreeIndex rebuild(org.gridgain.grid.util.offheap.unsafe.GridUnsafeMemory memory)
                        throws InterruptedException

If the index supports rebuilding it has to creates its own copy.

Overrides:

rebuild in class GridH2IndexBase

Parameters:

memory - Memory.

Returns:

Rebuilt copy.

Throws:

InterruptedException - If interrupted.