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

Class GridReduceQueryExecutor

java.lang.Object

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

public class GridReduceQueryExecutor
extends Object

Reduce query executor.

Constructor Summary

Constructors

Constructor and Description
GridReduceQueryExecutor(AtomicLong qryIdGen, GridSpinBusyLock busyLock)

Method Summary

Modifier and Type	Method and Description
void	cancelQueries(Collection<Long> queries) Cancel specified queries.
Collection<GridRunningQueryInfo>	longRunningQueries(long duration) Collect queries that already running more than specified duration.
void	onDisconnected(IgniteFuture<?> reconnectFut)
void	onMessage(UUID nodeId, Object msg)
Iterator<List<?>>	query(String schemaName, GridCacheTwoStepQuery qry, boolean keepBinary, boolean enforceJoinOrder, int timeoutMillis, GridQueryCancel cancel, Object[] params, int[] parts, boolean lazy)
void	releaseRemoteResources(Collection<ClusterNode> nodes, org.apache.ignite.internal.processors.query.h2.twostep.ReduceQueryRun r, long qryReqId, boolean distributedJoins) Release remote resources if needed.
void	start(GridKernalContext ctx, IgniteH2Indexing h2)
static int[]	toArray(org.h2.util.IntArray ints)
UpdateResult	update(String schemaName, List<Integer> cacheIds, String selectQry, Object[] params, boolean enforceJoinOrder, int pageSize, int timeoutMillis, int[] parts, boolean isReplicatedOnly, GridQueryCancel cancel)

Methods inherited from class java.lang.Object

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

Constructor Detail

GridReduceQueryExecutor

public GridReduceQueryExecutor(AtomicLong qryIdGen,
                               GridSpinBusyLock busyLock)

Parameters:

qryIdGen - Query ID generator.

busyLock - Busy lock.

Method Detail

start

public void start(GridKernalContext ctx,
                  IgniteH2Indexing h2)
           throws IgniteCheckedException

Parameters:

ctx - Context.

h2 - H2 Indexing.

Throws:

IgniteCheckedException - If failed.

onMessage

public void onMessage(UUID nodeId,
                      Object msg)

Parameters:

nodeId - Node ID.

msg - Message.

query

public Iterator<List<?>> query(String schemaName,
                               GridCacheTwoStepQuery qry,
                               boolean keepBinary,
                               boolean enforceJoinOrder,
                               int timeoutMillis,
                               GridQueryCancel cancel,
                               Object[] params,
                               int[] parts,
                               boolean lazy)

Parameters:

schemaName - Schema name.

qry - Query.

keepBinary - Keep binary.

enforceJoinOrder - Enforce join order of tables.

timeoutMillis - Timeout in milliseconds.

cancel - Query cancel.

params - Query parameters.

parts - Partitions.

lazy - Lazy execution flag.

Returns:

Rows iterator.

update

public UpdateResult update(String schemaName,
                           List<Integer> cacheIds,
                           String selectQry,
                           Object[] params,
                           boolean enforceJoinOrder,
                           int pageSize,
                           int timeoutMillis,
                           int[] parts,
                           boolean isReplicatedOnly,
                           GridQueryCancel cancel)

Parameters:

schemaName - Schema name.

cacheIds - Cache ids.

selectQry - Select query.

params - SQL parameters.

enforceJoinOrder - Enforce join order of tables.

pageSize - Page size.

timeoutMillis - Timeout.

parts - Partitions.

isReplicatedOnly - Whether query uses only replicated caches.

cancel - Cancel state.

Returns:

Update result, or null when some map node doesn't support distributed DML.

releaseRemoteResources

public void releaseRemoteResources(Collection<ClusterNode> nodes,
                                   org.apache.ignite.internal.processors.query.h2.twostep.ReduceQueryRun r,
                                   long qryReqId,
                                   boolean distributedJoins)

Release remote resources if needed.

Parameters:

nodes - Query nodes.

r - Query run.

qryReqId - Query id.

distributedJoins - Distributed join flag.

toArray

public static int[] toArray(org.h2.util.IntArray ints)

Parameters:

ints - Ints.

Returns:

Array.

onDisconnected

public void onDisconnected(IgniteFuture<?> reconnectFut)

Parameters:

reconnectFut - Reconnect future.

longRunningQueries

public Collection<GridRunningQueryInfo> longRunningQueries(long duration)

Collect queries that already running more than specified duration.

Parameters:

duration - Duration to check.

Returns:

Collection of IDs and statements of long running queries.

cancelQueries

public void cancelQueries(Collection<Long> queries)

Cancel specified queries.

Parameters:

queries - Queries IDs to cancel.