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

Class GridCacheQueryRequest

java.lang.Object

org.apache.ignite.internal.processors.cache.GridCacheMessage

org.apache.ignite.internal.processors.cache.GridCacheIdMessage

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

All Implemented Interfaces:

Serializable, GridCacheDeployable, Message

public class GridCacheQueryRequest
extends GridCacheIdMessage
implements GridCacheDeployable

Query request.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.ignite.internal.processors.cache.GridCacheIdMessage

cacheId

Fields inherited from class org.apache.ignite.internal.processors.cache.GridCacheMessage

addDepInfo, CACHE_MSG_INDEX_FIELD_NAME, forceAddDepInfo, MAX_CACHE_MSG_LOOKUP_INDEX

Fields inherited from interface org.apache.ignite.plugin.extensions.communication.Message

DIRECT_TYPE_SIZE

Constructor Summary

Constructors

Constructor and Description
GridCacheQueryRequest() Required by Externalizable

Method Summary

Modifier and Type	Method and Description
boolean	addDeploymentInfo() Deployment enabled flag indicates whether deployment info has to be added to this message.
boolean	allPages()
Object[]	arguments()
String	cacheName()
boolean	cancel()
static GridCacheQueryRequest	cancelRequest(GridCacheContext<?,?> cctx, long reqId, boolean fieldsQry) Send cancel query request, so no new pages will be sent.
String	className()
String	clause()
short	directType() Gets message type.
boolean	fields()
byte	fieldsCount() Gets fields count.
void	finishUnmarshal(GridCacheSharedContext ctx, ClassLoader ldr) This method is called after the message is deserialized and is responsible for unmarshalling state marshalled in GridCacheMessage.prepareMarshal(GridCacheSharedContext) method.
long	id()
IndexQueryDesc	idxQryDesc()
boolean	includeBackups()
boolean	includeMetaData()
Boolean	isDataPageScanEnabled()
boolean	keepBinary()
IgniteBiPredicate<Object,Object>	keyValueFilter()
int	limit()
static GridCacheQueryRequest	pageRequest(GridCacheContext<?,?> cctx, long reqId, GridCacheQueryAdapter<?> qry, boolean fields) Send request for fetching query result pages to specified nodes.
int	pageSize()
int	partition()
void	prepareMarshal(GridCacheSharedContext ctx) This method is called before the whole message is serialized and is responsible for pre-marshalling state.
boolean	readFrom(ByteBuffer buf, MessageReader reader) Reads this message from provided byte buffer.
IgniteReducer<Object,Object>	reducer()
static GridCacheQueryRequest	startQueryRequest(GridCacheContext<?,?> cctx, long reqId, GridCacheDistributedQueryFuture<?,?,?> fut) Send initial query request to specified nodes.
int	taskHash()
AffinityTopologyVersion	topologyVersion() Gets topology version or -1 in case of topology version is not required for this message.
String	toString()
IgniteClosure<?,?>	transformer()
GridCacheQueryType	type()
boolean	writeTo(ByteBuffer buf, MessageWriter writer) Writes this message to provided byte buffer.

Methods inherited from class org.apache.ignite.internal.processors.cache.GridCacheIdMessage

cacheGroupMessage, cacheId, cacheId, handlerId

Methods inherited from class org.apache.ignite.internal.processors.cache.GridCacheMessage

appendFlag, classError, deployInfo, error, finishUnmarshalCacheObjects, finishUnmarshalCacheObjects, ignoreClassErrors, lastAffinityChangedTopologyVersion, lastAffinityChangedTopologyVersion, lookupIndex, marshalCollection, marshalInfo, marshalInfos, marshalInvokeArguments, marshalTx, messageId, messageLogger, nextIndexId, onAckReceived, onClassError, partitionExchangeMessage, prepare, prepareMarshalCacheObject, prepareMarshalCacheObjects, prepareMarshalCacheObjects, prepareObject, prepareObject, transferExpiryPolicy, unmarshalCollection, unmarshalInfo, unmarshalInfos, unmarshalInvokeArguments, unmarshalTx

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ignite.internal.processors.cache.GridCacheDeployable

deployInfo, prepare

Constructor Detail

GridCacheQueryRequest

public GridCacheQueryRequest()

Required by Externalizable

Method Detail

startQueryRequest

public static GridCacheQueryRequest startQueryRequest(GridCacheContext<?,?> cctx,
                                                      long reqId,
                                                      GridCacheDistributedQueryFuture<?,?,?> fut)

Send initial query request to specified nodes.

Parameters:

reqId - Request (cache query) ID.

fut - Cache query future, contains query info.

pageRequest

public static GridCacheQueryRequest pageRequest(GridCacheContext<?,?> cctx,
                                                long reqId,
                                                GridCacheQueryAdapter<?> qry,
                                                boolean fields)

Send request for fetching query result pages to specified nodes.

Parameters:

reqId - Request (cache query) ID.

cancelRequest

public static GridCacheQueryRequest cancelRequest(GridCacheContext<?,?> cctx,
                                                  long reqId,
                                                  boolean fieldsQry)

Send cancel query request, so no new pages will be sent.

Parameters:

reqId - Query request ID.

fieldsQry - Whether query is a fields query.

topologyVersion

public AffinityTopologyVersion topologyVersion()

Gets topology version or -1 in case of topology version is not required for this message.

Overrides:

topologyVersion in class GridCacheMessage

Returns:

Topology version.

prepareMarshal

public void prepareMarshal(GridCacheSharedContext ctx)
                    throws IgniteCheckedException

This method is called before the whole message is serialized and is responsible for pre-marshalling state.

Overrides:

prepareMarshal in class GridCacheMessage

Parameters:

ctx - Cache context.

Throws:

IgniteCheckedException - If failed.

finishUnmarshal

public void finishUnmarshal(GridCacheSharedContext ctx,
                            ClassLoader ldr)
                     throws IgniteCheckedException

This method is called after the message is deserialized and is responsible for unmarshalling state marshalled in GridCacheMessage.prepareMarshal(GridCacheSharedContext) method.

Overrides:

finishUnmarshal in class GridCacheMessage

Parameters:

ctx - Context.

ldr - Class loader.

Throws:

IgniteCheckedException - If failed.

addDeploymentInfo

public boolean addDeploymentInfo()

Deployment enabled flag indicates whether deployment info has to be added to this message.

Specified by:

addDeploymentInfo in class GridCacheMessage

Returns:

true or if deployment info must be added to the the message, false otherwise.

id

public long id()

Returns:

Request id.

cacheName

public String cacheName()

Returns:

Cache name.

type

public GridCacheQueryType type()

Returns:

Query type.

fields

public boolean fields()

Returns:

true if query returns fields.

limit

public int limit()

Returns:

Query limit.

clause

public String clause()

Returns:

Query clause.

idxQryDesc

public IndexQueryDesc idxQryDesc()

Returns:

Index query description.

className

public String className()

Returns:

Class name.

includeBackups

public boolean includeBackups()

Returns:

Flag indicating whether to include backups.

cancel

public boolean cancel()

Returns:

Flag indicating that this is cancel request.

keyValueFilter

public IgniteBiPredicate<Object,Object> keyValueFilter()

Returns:

Key-value filter.

reducer

public IgniteReducer<Object,Object> reducer()

Returns:

Reducer.

transformer

public IgniteClosure<?,?> transformer()

Returns:

Transformer.

pageSize

public int pageSize()

Returns:

Page size.

arguments

public Object[] arguments()

Returns:

Arguments.

includeMetaData

public boolean includeMetaData()

Returns:

Include meta data or not.

allPages

public boolean allPages()

Returns:

Whether to load all pages.

keepBinary

public boolean keepBinary()

Returns:

Whether to keep binary.

taskHash

public int taskHash()

Returns:

Task hash.

isDataPageScanEnabled

public Boolean isDataPageScanEnabled()

Returns:

Flag to enable data page scan.

partition

public int partition()

Overrides:

partition in class GridCacheMessage

Returns:

partition.

writeTo

public boolean writeTo(ByteBuffer buf,
                       MessageWriter writer)

Writes this message to provided byte buffer.

Specified by:

writeTo in interface Message

Overrides:

writeTo in class GridCacheIdMessage

Parameters:

buf - Byte buffer.

writer - Writer.

Returns:

Whether message was fully written.

readFrom

public boolean readFrom(ByteBuffer buf,
                        MessageReader reader)

Reads this message from provided byte buffer.

Specified by:

readFrom in interface Message

Overrides:

readFrom in class GridCacheIdMessage

Parameters:

buf - Byte buffer.

reader - Reader.

Returns:

Whether message was fully read.

directType

public short directType()

Gets message type.

Specified by:

directType in interface Message

Returns:

Message type.

fieldsCount

public byte fieldsCount()

Gets fields count.

Specified by:

fieldsCount in interface Message

Overrides:

fieldsCount in class GridCacheIdMessage

Returns:

Fields count.

toString

public String toString()

Overrides:

toString in class GridCacheIdMessage