org.apache.calcite.avatica.remote

Interface ProtobufMeta

All Superinterfaces:

Meta

All Known Implementing Classes:

JdbcMeta

public interface ProtobufMeta
extends Meta

An extension of Meta which allows for native processing of calls with the Protobuf API objects instead of the POJOS (to avoid object translation). In the write-path, performing this conversion tends to represent a signficant portion of execution time. The introduction of this interface is to serve the purose of gradual migration to Meta implementations that can naturally function over Protobuf objects instead of the POJOs.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.avatica.Meta

Meta.ConnectionHandle, Meta.ConnectionProperties, Meta.CursorFactory, Meta.DatabaseProperty, Meta.ExecuteBatchResult, Meta.ExecuteResult, Meta.Factory, Meta.Frame, Meta.MetaResultSet, Meta.Pat, Meta.PrepareCallback, Meta.Signature, Meta.StatementHandle, Meta.StatementType, Meta.Style

Method Summary

Modifier and Type	Method and Description
Meta.ExecuteBatchResult	executeBatchProtobuf(Meta.StatementHandle h, List<org.apache.calcite.avatica.proto.Requests.UpdateBatch> parameterValues) Executes a batch of commands on a prepared statement.

Methods inherited from interface org.apache.calcite.avatica.Meta

closeConnection, closeStatement, commit, connectionSync, createIterable, createStatement, execute, execute, executeBatch, fetch, getAttributes, getBestRowIdentifier, getCatalogs, getClientInfoProperties, getColumnPrivileges, getColumns, getCrossReference, getDatabaseProperties, getExportedKeys, getFunctionColumns, getFunctions, getImportedKeys, getIndexInfo, getPrimaryKeys, getProcedureColumns, getProcedures, getPseudoColumns, getSchemas, getSuperTables, getSuperTypes, getTablePrivileges, getTables, getTableTypes, getTypeInfo, getUDTs, getVersionColumns, openConnection, prepare, prepareAndExecute, prepareAndExecute, prepareAndExecuteBatch, rollback, syncResults

Method Detail

executeBatchProtobuf

Meta.ExecuteBatchResult executeBatchProtobuf(Meta.StatementHandle h,
                                             List<org.apache.calcite.avatica.proto.Requests.UpdateBatch> parameterValues)
                                      throws NoSuchStatementException

Executes a batch of commands on a prepared statement.

Parameters:

h - Statement handle

parameterValues - A collection of list of typed values, one list per batch

Returns:

An array of update counts containing one element for each command in the batch.

Throws:

NoSuchStatementException