org.apache.ignite.internal.processors.cache.query

Class GridCacheTwoStepQuery

java.lang.Object

org.apache.ignite.internal.processors.cache.query.GridCacheTwoStepQuery

public class GridCacheTwoStepQuery
extends Object

Two step map-reduce style query.

Field Summary

Fields

Modifier and Type	Field and Description
static int	DFLT_PAGE_SIZE

Constructor Summary

Constructors

Constructor and Description
GridCacheTwoStepQuery(String originalSql, Set<QueryTable> tbls)

Method Summary

Modifier and Type	Method and Description
void	addMapQuery(GridCacheSqlQuery qry)
List<Integer>	cacheIds()
void	cacheIds(List<Integer> cacheIds)
GridCacheTwoStepQuery	copy()
CacheQueryPartitionInfo[]	derivedPartitions()
void	derivedPartitions(CacheQueryPartitionInfo[] derivedPartitions)
boolean	distributedJoins() Check if distributed joins are enabled for this query.
void	distributedJoins(boolean distributedJoins) Specify if distributed joins are enabled for this query.
boolean	explain()
void	explain(boolean explain)
boolean	isLocal()
boolean	isReplicatedOnly()
void	local(boolean local)
List<GridCacheSqlQuery>	mapQueries()
String	originalSql()
int	pageSize()
void	pageSize(int pageSize)
GridCacheSqlQuery	reduceQuery()
void	reduceQuery(GridCacheSqlQuery rdc)
boolean	skipMergeTable()
void	skipMergeTable(boolean skipMergeTbl)
Set<QueryTable>	tables()
int	tablesCount()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

DFLT_PAGE_SIZE

public static final int DFLT_PAGE_SIZE

See Also:

Constant Field Values

Constructor Detail

GridCacheTwoStepQuery

public GridCacheTwoStepQuery(String originalSql,
                             Set<QueryTable> tbls)

Parameters:

originalSql - Original query SQL.

tbls - Tables in query.

Method Detail

distributedJoins

public void distributedJoins(boolean distributedJoins)

Specify if distributed joins are enabled for this query.

Parameters:

distributedJoins - Distributed joins enabled.

distributedJoins

public boolean distributedJoins()

Check if distributed joins are enabled for this query.

Returns:

true If distributed joins enabled.

skipMergeTable

public boolean skipMergeTable()

Returns:

True if reduce query can skip merge table creation and get data directly from merge index.

skipMergeTable

public void skipMergeTable(boolean skipMergeTbl)

Parameters:

skipMergeTbl - Skip merge table.

explain

public boolean explain()

Returns:

If this is explain query.

explain

public void explain(boolean explain)

Parameters:

explain - If this is explain query.

pageSize

public void pageSize(int pageSize)

Parameters:

pageSize - Page size.

pageSize

public int pageSize()

Returns:

Page size.

addMapQuery

public void addMapQuery(GridCacheSqlQuery qry)

Parameters:

qry - SQL Query.

isReplicatedOnly

public boolean isReplicatedOnly()

Returns:

true If all the map queries contain only replicated tables.

reduceQuery

public GridCacheSqlQuery reduceQuery()

Returns:

Reduce query.

reduceQuery

public void reduceQuery(GridCacheSqlQuery rdc)

Parameters:

rdc - Reduce query.

mapQueries

public List<GridCacheSqlQuery> mapQueries()

Returns:

Map queries.

cacheIds

public List<Integer> cacheIds()

Returns:

Cache IDs.

cacheIds

public void cacheIds(List<Integer> cacheIds)

Parameters:

cacheIds - Cache IDs.

originalSql

public String originalSql()

Returns:

Original query SQL.

isLocal

public boolean isLocal()

Returns:

True If query is local.

local

public void local(boolean local)

Parameters:

local - Local query flag.

derivedPartitions

public CacheQueryPartitionInfo[] derivedPartitions()

Returns:

Query derived partitions info.

derivedPartitions

public void derivedPartitions(CacheQueryPartitionInfo[] derivedPartitions)

Parameters:

derivedPartitions - Query derived partitions info.

copy

public GridCacheTwoStepQuery copy()

Returns:

Copy.

tablesCount

public int tablesCount()

Returns:

Nuumber of tables.

tables

public Set<QueryTable> tables()

Returns:

Tables.

toString

public String toString()

Overrides:

toString in class Object