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

Interface QueryEngine

All Superinterfaces:

GridComponent, GridProcessor

All Known Subinterfaces:

IndexingQueryEngine

All Known Implementing Classes:

NoOpQueryEngine

public interface QueryEngine
extends GridProcessor

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.ignite.internal.GridComponent

GridComponent.DiscoveryDataExchangeType

Method Summary

Modifier and Type	Method	Description
List<List<GridQueryFieldMetadata>>	parameterMetaData(@Nullable QueryContext ctx, String schemaName, String qry)
List<FieldsQueryCursor<List<?>>>	query(@Nullable QueryContext ctx, String schemaName, String qry, Object... params)
List<FieldsQueryCursor<List<?>>>	queryBatched(@Nullable QueryContext ctx, String schemaName, String qry, List<Object[]> batchedParams)
List<List<GridQueryFieldMetadata>>	resultSetMetaData(@Nullable QueryContext ctx, String schemaName, String qry)

Methods inherited from interface org.apache.ignite.internal.GridComponent

collectGridNodeData, collectJoiningNodeData, discoveryDataType, onDisconnected, onGridDataReceived, onJoiningNodeDataReceived, onKernalStart, onKernalStop, onReconnected, printMemoryStats, start, stop, validateNode, validateNode

Method Detail

query

List<FieldsQueryCursor<List<?>>> query(@Nullable
                                       @Nullable QueryContext ctx,
                                       String schemaName,
                                       String qry,
                                       Object... params)
                                throws IgniteSQLException

Parameters:

ctx - Query context, may be null.

schemaName - Schema name.

qry - Query.

params - Optional query parameters.

Returns:

List of query cursors. Size of list depends on number of distinct queries in qry.

Throws:

IgniteSQLException - If failed.

parameterMetaData

List<List<GridQueryFieldMetadata>> parameterMetaData(@Nullable
                                                     @Nullable QueryContext ctx,
                                                     String schemaName,
                                                     String qry)
                                              throws IgniteSQLException

Parameters:

ctx - Query context, may be null.

schemaName - Schema name.

qry - Query.

Returns:

List of queries' parameters metadata. Size of list depends on number of distinct queries in qry.

Throws:

IgniteSQLException - If failed.

resultSetMetaData

List<List<GridQueryFieldMetadata>> resultSetMetaData(@Nullable
                                                     @Nullable QueryContext ctx,
                                                     String schemaName,
                                                     String qry)
                                              throws IgniteSQLException

Parameters:

ctx - Query context, may be null.

schemaName - Schema name.

qry - Query.

Returns:

List of queries' result sets metadata. Size of list depends on number of distinct queries in qry.

Throws:

IgniteSQLException - If failed.

queryBatched

List<FieldsQueryCursor<List<?>>> queryBatched(@Nullable
                                              @Nullable QueryContext ctx,
                                              String schemaName,
                                              String qry,
                                              List<Object[]> batchedParams)
                                       throws IgniteSQLException

Parameters:

ctx - Query context, may be null.

schemaName - Schema name.

qry - Query.

batchedParams - Optional query parameters.

Returns:

List of query cursors. Size of list equals to size of batchedParams.

Throws:

IgniteSQLException - If failed.