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

Class ReduceTable

java.lang.Object

org.gridgain.internal.h2.engine.DbObjectBase

org.gridgain.internal.h2.schema.SchemaObjectBase

org.gridgain.internal.h2.table.Table

org.gridgain.internal.h2.table.TableBase

org.apache.ignite.internal.processors.query.h2.twostep.ReduceTable

All Implemented Interfaces:

org.gridgain.internal.h2.engine.DbObject, org.gridgain.internal.h2.schema.SchemaObject

public class ReduceTable
extends org.gridgain.internal.h2.table.TableBase

Table for reduce phase. Created for every splitted map query. Tables are created in H2 through SQL statement. In order to avoid overhead on SQL execution for every query, we create ReduceTableWrapper instead and set real ReduceTable through thread-local during query execution. This allow us to have only very limited number of physical tables in H2 for all user requests.

Field Summary

Fields inherited from class org.gridgain.internal.h2.table.Table

columns, compareMode, isHidden, TYPE_CACHED, TYPE_MEMORY

Fields inherited from class org.gridgain.internal.h2.engine.DbObjectBase

comment, database, trace

Fields inherited from interface org.gridgain.internal.h2.engine.DbObject

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

Constructor Summary

Constructors

Constructor and Description
ReduceTable(org.gridgain.internal.h2.command.ddl.CreateTableData data)

Method Summary

Modifier and Type	Method and Description
org.gridgain.internal.h2.index.Index	addIndex(org.gridgain.internal.h2.engine.Session session, String indexName, int indexId, org.gridgain.internal.h2.table.IndexColumn[] cols, org.gridgain.internal.h2.index.IndexType indexType, boolean create, String indexComment)
void	addRow(org.gridgain.internal.h2.engine.Session session, org.gridgain.internal.h2.result.Row row)
boolean	canDrop()
boolean	canGetRowCount()
void	checkRename()
void	checkSupportAlter()
void	close(org.gridgain.internal.h2.engine.Session ses)
static H2ScanIndex<AbstractReduceIndexAdapter>	createScanIndex(AbstractReduceIndexAdapter idx, ReduceTable tbl)
long	getDiskSpaceUsed()
ArrayList<org.gridgain.internal.h2.index.Index>	getIndexes()
long	getMaxDataModificationId()
org.apache.ignite.internal.processors.query.h2.twostep.Reducer	getReducer()
long	getRowCount(org.gridgain.internal.h2.engine.Session ses)
long	getRowCountApproximation(org.gridgain.internal.h2.engine.Session ses)
org.gridgain.internal.h2.index.Index	getScanIndex(org.gridgain.internal.h2.engine.Session session)
org.gridgain.internal.h2.table.TableType	getTableType()
org.gridgain.internal.h2.index.Index	getUniqueIndex()
void	indexes(ArrayList<org.gridgain.internal.h2.index.Index> idxs)
boolean	isDeterministic()
boolean	isLockedExclusively()
boolean	lock(org.gridgain.internal.h2.engine.Session session, boolean exclusive, boolean force)
void	removeRow(org.gridgain.internal.h2.engine.Session session, org.gridgain.internal.h2.result.Row row)
void	truncate(org.gridgain.internal.h2.engine.Session session)
void	unlock(org.gridgain.internal.h2.engine.Session s)

Methods inherited from class org.gridgain.internal.h2.table.TableBase

getCreateSQL, getDropSQL, getMainIndexColumn, isGlobalTemporary

Methods inherited from class org.gridgain.internal.h2.table.Table

addConstraint, addDependencies, addDependentView, addSequence, addSynonym, addTrigger, canReference, canTruncate, checkDeadlock, checkWritingAllowed, compareValues, createRow, doesColumnExist, dropMultipleColumnsConstraintsAndIndexes, findPrimaryKey, fire, fireAfterRow, fireBeforeRow, fireRow, getBestPlanItem, getCheckForeignKeyConstraints, getChildren, getColumn, getColumn, getColumns, getCompareMode, getConstraints, getCreateSQLForCopy, getDefaultValue, getDependentViews, getIndex, getIndexForColumn, getOnCommitDrop, getOnCommitTruncate, getOnUpdateValue, getPrimaryKey, getRow, getRowIdColumn, getScanIndex, getSearchRow, getTemplateRow, getTemplateSimpleRow, getType, getVisibleColums, hasSelectTrigger, isHidden, isLockedExclusivelyBy, isMVStore, isPersistData, isPersistIndexes, isQueryComparable, isTableExpression, isView, lockRow, removeChildrenAndResources, removeConstraint, removeDependentView, removeIndex, removeIndexOrTransferOwnership, removeSequence, removeSynonym, removeTrigger, rename, renameColumn, setCheckForeignKeyConstraints, setColumns, setHidden, setOnCommitDrop, setOnCommitTruncate, setTableExpression, updateRow, updateRows, validateConvertUpdateSequence

Methods inherited from class org.gridgain.internal.h2.schema.SchemaObjectBase

getSchema, getSQL, getSQL

Methods inherited from class org.gridgain.internal.h2.engine.DbObjectBase

getComment, getDatabase, getId, getModificationId, getName, invalidate, isTemporary, isValid, setComment, setModified, setObjectName, setTemporary, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.gridgain.internal.h2.engine.DbObject

getComment, getDatabase, getId, getName, isTemporary, setComment, setTemporary

Constructor Detail

ReduceTable

public ReduceTable(org.gridgain.internal.h2.command.ddl.CreateTableData data)

Parameters:

data - Data.

Method Detail

indexes

public void indexes(ArrayList<org.gridgain.internal.h2.index.Index> idxs)

Parameters:

idxs - Indexes.

getReducer

public org.apache.ignite.internal.processors.query.h2.twostep.Reducer getReducer()

Returns:

Merge index.

createScanIndex

public static H2ScanIndex<AbstractReduceIndexAdapter> createScanIndex(AbstractReduceIndexAdapter idx,
                                                                      ReduceTable tbl)

Parameters:

idx - Index.

Returns:

Scan index.

lock

public boolean lock(org.gridgain.internal.h2.engine.Session session,
                    boolean exclusive,
                    boolean force)

Specified by:

lock in class org.gridgain.internal.h2.table.Table

close

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

Specified by:

close in class org.gridgain.internal.h2.table.Table

unlock

public void unlock(org.gridgain.internal.h2.engine.Session s)

Specified by:

unlock in class org.gridgain.internal.h2.table.Table

addIndex

public org.gridgain.internal.h2.index.Index addIndex(org.gridgain.internal.h2.engine.Session session,
                                                     String indexName,
                                                     int indexId,
                                                     org.gridgain.internal.h2.table.IndexColumn[] cols,
                                                     org.gridgain.internal.h2.index.IndexType indexType,
                                                     boolean create,
                                                     String indexComment)

Specified by:

addIndex in class org.gridgain.internal.h2.table.Table

removeRow

public void removeRow(org.gridgain.internal.h2.engine.Session session,
                      org.gridgain.internal.h2.result.Row row)

Specified by:

removeRow in class org.gridgain.internal.h2.table.Table

truncate

public void truncate(org.gridgain.internal.h2.engine.Session session)

Specified by:

truncate in class org.gridgain.internal.h2.table.Table

addRow

public void addRow(org.gridgain.internal.h2.engine.Session session,
                   org.gridgain.internal.h2.result.Row row)

Specified by:

addRow in class org.gridgain.internal.h2.table.Table

checkSupportAlter

public void checkSupportAlter()

Specified by:

checkSupportAlter in class org.gridgain.internal.h2.table.Table

getTableType

public org.gridgain.internal.h2.table.TableType getTableType()

Specified by:

getTableType in class org.gridgain.internal.h2.table.Table

getScanIndex

public org.gridgain.internal.h2.index.Index getScanIndex(org.gridgain.internal.h2.engine.Session session)

Specified by:

getScanIndex in class org.gridgain.internal.h2.table.Table

getUniqueIndex

public org.gridgain.internal.h2.index.Index getUniqueIndex()

Specified by:

getUniqueIndex in class org.gridgain.internal.h2.table.Table

getIndexes

public ArrayList<org.gridgain.internal.h2.index.Index> getIndexes()

Specified by:

getIndexes in class org.gridgain.internal.h2.table.Table

isLockedExclusively

public boolean isLockedExclusively()

Specified by:

isLockedExclusively in class org.gridgain.internal.h2.table.Table

getMaxDataModificationId

public long getMaxDataModificationId()

Specified by:

getMaxDataModificationId in class org.gridgain.internal.h2.table.Table

isDeterministic

public boolean isDeterministic()

Specified by:

isDeterministic in class org.gridgain.internal.h2.table.Table

canGetRowCount

public boolean canGetRowCount()

Specified by:

canGetRowCount in class org.gridgain.internal.h2.table.Table

canDrop

public boolean canDrop()

Specified by:

canDrop in class org.gridgain.internal.h2.table.Table

getRowCount

public long getRowCount(org.gridgain.internal.h2.engine.Session ses)

Specified by:

getRowCount in class org.gridgain.internal.h2.table.Table

getRowCountApproximation

public long getRowCountApproximation(org.gridgain.internal.h2.engine.Session ses)

Specified by:

getRowCountApproximation in class org.gridgain.internal.h2.table.Table

getDiskSpaceUsed

public long getDiskSpaceUsed()

Specified by:

getDiskSpaceUsed in class org.gridgain.internal.h2.table.Table

checkRename

public void checkRename()

Specified by:

checkRename in interface org.gridgain.internal.h2.engine.DbObject

Specified by:

checkRename in class org.gridgain.internal.h2.engine.DbObjectBase