Package org.apache.ignite.internal.processors.query

Interface GridQueryIndexing

public interface GridQueryIndexing

Abstraction for internal indexing implementation.

Method Summary

Modifier and Type	Method	Description
IndexingQueryFilter	backupFilter(AffinityTopologyVersion topVer, int[] parts)	Returns backup filter.
SqlFieldsQuery	generateFieldsQuery(String cacheName, SqlQuery qry)	Generate SqlFieldsQuery from SqlQuery.
boolean	isStreamableInsertStatement(String schemaName, SqlFieldsQuery sql)	Whether passed sql statement is single insert statement eligible for streaming.
void	onClientDisconnect()	Performs necessary actions on disconnect of a stateful client (say, one associated with a transaction).
void	onDisconnected(IgniteFuture<?> reconnectFut)	Client disconnected callback.
void	onKernalStop()	Cancels all executing queries.
List<JdbcParameterMeta>	parameterMetaData(String schemaName, SqlFieldsQuery sql)	Jdbc parameters metadata of the specified query.
<K,V> GridCloseableIterator<IgniteBiTuple<K,V>>	queryLocalText(String schemaName, String cacheName, String qry, String typeName, IndexingQueryFilter filter, int limit)	Executes text query.
List<FieldsQueryCursor<List<?>>>	querySqlFields(String schemaName, SqlFieldsQuery qry, SqlClientContext cliCtx, boolean keepBinary, boolean failOnMultipleStmts, GridQueryCancel cancel)	Detect whether SQL query should be executed in distributed or local manner and execute it.
void	registerCache(String cacheName, String schemaName, GridCacheContextInfo<?,?> cacheInfo)	Registers cache.
void	remove(GridCacheContext cctx, GridQueryTypeDescriptor type, CacheDataRow row)	Removes index entry by key.
@Nullable List<GridQueryFieldMetadata>	resultMetaData(String schemaName, SqlFieldsQuery sql)	Metadata of the result set that is returned if specified query gets executed.
RunningQueryManager	runningQueryManager()
void	start(GridKernalContext ctx, GridSpinBusyLock busyLock)	Starts indexing.
void	stop()	Stops indexing.
void	store(GridCacheContext cctx, GridQueryTypeDescriptor type, CacheDataRow row, CacheDataRow prevRow, boolean prevRowAvailable)	Updates index.
List<Long>	streamBatchedUpdateQuery(String schemaName, String qry, List<Object[]> params, SqlClientContext cliCtx, String qryInitiatorId)	Execute a batched INSERT statement using data streamer as receiver.
long	streamUpdateQuery(String schemaName, String qry, @Nullable Object[] params, IgniteDataStreamer<?,?> streamer, String qryInitiatorId)	Execute an INSERT statement using data streamer as receiver.
void	unregisterCache(GridCacheContextInfo<?,?> cacheInfo)	Unregisters cache.

Method Detail

start

void start(GridKernalContext ctx,
           GridSpinBusyLock busyLock)
    throws IgniteCheckedException

Starts indexing.

Parameters:

ctx - Context.

busyLock - Busy lock.

Throws:

IgniteCheckedException - If failed.

stop

void stop()
   throws IgniteCheckedException

Stops indexing.

Throws:

IgniteCheckedException - If failed.

onClientDisconnect

void onClientDisconnect()
                 throws IgniteCheckedException

Performs necessary actions on disconnect of a stateful client (say, one associated with a transaction).

Throws:

IgniteCheckedException - If failed.

generateFieldsQuery

SqlFieldsQuery generateFieldsQuery(String cacheName,
                                   SqlQuery qry)

Generate SqlFieldsQuery from SqlQuery.

Parameters:

cacheName - Cache name.

qry - Query.

Returns:

Fields query.

querySqlFields

List<FieldsQueryCursor<List<?>>> querySqlFields(String schemaName,
                                                SqlFieldsQuery qry,
                                                SqlClientContext cliCtx,
                                                boolean keepBinary,
                                                boolean failOnMultipleStmts,
                                                GridQueryCancel cancel)

Detect whether SQL query should be executed in distributed or local manner and execute it.

Parameters:

schemaName - Schema name.

qry - Query.

cliCtx - Client context.

keepBinary - Keep binary flag.

failOnMultipleStmts - Whether an exception should be thrown for multiple statements query.

Returns:

Cursor.

streamUpdateQuery

long streamUpdateQuery(String schemaName,
                       String qry,
                       @Nullable
                       @Nullable Object[] params,
                       IgniteDataStreamer<?,?> streamer,
                       String qryInitiatorId)
                throws IgniteCheckedException

Execute an INSERT statement using data streamer as receiver.

Parameters:

schemaName - Schema name.

qry - Query.

params - Query parameters.

streamer - Data streamer to feed data to.

qryInitiatorId - Query initiator ID.

Returns:

Update counter.

Throws:

IgniteCheckedException - If failed.

streamBatchedUpdateQuery

List<Long> streamBatchedUpdateQuery(String schemaName,
                                    String qry,
                                    List<Object[]> params,
                                    SqlClientContext cliCtx,
                                    String qryInitiatorId)
                             throws IgniteCheckedException

Execute a batched INSERT statement using data streamer as receiver.

Parameters:

schemaName - Schema name.

qry - Query.

params - Query parameters.

cliCtx - Client connection context.

qryInitiatorId - Query initiator ID.

Returns:

Update counters.

Throws:

IgniteCheckedException - If failed.

queryLocalText

<K,V> GridCloseableIterator<IgniteBiTuple<K,V>> queryLocalText(String schemaName,
                                                                           String cacheName,
                                                                           String qry,
                                                                           String typeName,
                                                                           IndexingQueryFilter filter,
                                                                           int limit)
                                                                    throws IgniteCheckedException

Executes text query.

Parameters:

schemaName - Schema name.

cacheName - Cache name.

qry - Text query.

typeName - Type name.

filter - Cache name and key filter. @return Queried rows.

limit - Limits response records count. If 0 or less, the limit considered to be Integer.MAX_VALUE, that is virtually no limit.

Throws:

IgniteCheckedException - If failed.

registerCache

void registerCache(String cacheName,
                   String schemaName,
                   GridCacheContextInfo<?,?> cacheInfo)
            throws IgniteCheckedException

Registers cache.

Parameters:

cacheName - Cache name.

schemaName - Schema name.

cacheInfo - Cache context info.

Throws:

IgniteCheckedException - If failed.

unregisterCache

void unregisterCache(GridCacheContextInfo<?,?> cacheInfo)

Unregisters cache.

Parameters:

cacheInfo - Cache context info.

parameterMetaData

List<JdbcParameterMeta> parameterMetaData(String schemaName,
                                          SqlFieldsQuery sql)
                                   throws IgniteSQLException

Jdbc parameters metadata of the specified query.

Parameters:

schemaName - the default schema name for query.

sql - Sql query.

Returns:

metadata describing all the parameters, even in case of multi-statement.

Throws:

SQLException - if failed to get meta.

IgniteSQLException

resultMetaData

@Nullable
@Nullable List<GridQueryFieldMetadata> resultMetaData(String schemaName,
                                                      SqlFieldsQuery sql)
                                               throws IgniteSQLException

Metadata of the result set that is returned if specified query gets executed.

Parameters:

schemaName - the default schema name for query.

sql - Sql query.

Returns:

metadata or null if provided query is multi-statement or id it's not a SELECT statement.

Throws:

SQLException - if failed to get meta.

IgniteSQLException

store

void store(GridCacheContext cctx,
           GridQueryTypeDescriptor type,
           CacheDataRow row,
           CacheDataRow prevRow,
           boolean prevRowAvailable)
    throws IgniteCheckedException

Updates index. Note that key is unique for cache, so if cache contains multiple indexes the key should be removed from indexes other than one being updated.

Parameters:

cctx - Cache context.

type - Type descriptor.

row - New row.

prevRow - Previous row.

prevRowAvailable - Whether previous row is available.

Throws:

IgniteCheckedException - If failed.

remove

void remove(GridCacheContext cctx,
            GridQueryTypeDescriptor type,
            CacheDataRow row)
     throws IgniteCheckedException

Removes index entry by key.

Parameters:

cctx - Cache context.

type - Type descriptor.

row - Row.

Throws:

IgniteCheckedException - If failed.

backupFilter

IndexingQueryFilter backupFilter(AffinityTopologyVersion topVer,
                                 int[] parts)

Returns backup filter.

Parameters:

topVer - Topology version.

parts - Partitions.

Returns:

Backup filter.

onDisconnected

void onDisconnected(IgniteFuture<?> reconnectFut)

Client disconnected callback.

Parameters:

reconnectFut - Reconnect future.

runningQueryManager

RunningQueryManager runningQueryManager()

Returns:

Running query manager.

onKernalStop

void onKernalStop()

Cancels all executing queries.

isStreamableInsertStatement

boolean isStreamableInsertStatement(String schemaName,
                                    SqlFieldsQuery sql)
                             throws SQLException

Whether passed sql statement is single insert statement eligible for streaming.

Parameters:

schemaName - name of the schema.

sql - sql statement.

Throws:

SQLException