C++ API Reference for Intel® Data Analytics Acceleration Library 2020 Update 1

List of all members
ODBCDataSource< FeatureManager, SummaryStatisticsType > Class Template Reference

Connects to data sources with the ODBC API. More...

Additional Inherited Members

- Public Types inherited from DataSourceIface
enum  DataSourceStatus { readyForLoad = 1, waitingForRows = 2, endOfData = 3, notReady = 4 }
 Specifies the status of the Data Source. More...
 
enum  DictionaryCreationFlag { notDictionaryFromContext = 1, doDictionaryFromContext = 2 }
 Specifies whether a Data Dictionary is created from the context of a Data Source. More...
 
enum  NumericTableAllocationFlag { notAllocateNumericTable = 1, doAllocateNumericTable = 2 }
 Specifies whether a Numeric Table is allocated inside of the Data Source object. More...
 

Class Declaration

template<typename FeatureManager, typename SummaryStatisticsType = DAAL_SUMMARY_STATISTICS_TYPE>
class daal::data_management::interface1::ODBCDataSource< FeatureManager, SummaryStatisticsType >

Template Parameters
FeatureManagerType of a data source, supports only SQLFeatureManager
SummaryStatisticsTypeThe floating point type to compute summary statics for numeric table

Constructor & Destructor Documentation

ODBCDataSource ( const std::string &  dbname,
const std::string &  tableName = "",
const std::string &  userName = "",
const std::string &  password = "",
DataSourceIface::NumericTableAllocationFlag  doAllocateNumericTable = DataSource::notAllocateNumericTable,
DataSourceIface::DictionaryCreationFlag  doCreateDictionaryFromContext = DataSource::notDictionaryFromContext,
size_t  initialMaxRows = 10 
)
inline

Constructor for the ODBCDataSource class

Parameters
[in]dbnameData Source Name as configured in settings of the ODBC driver
[in]tableNameName of a table to export from a data source
[in]userName(optional) Username for the data source
[in]password(optional) Password for the Username in the data source
[in]doAllocateNumericTable(optional) Flag that specifies whether a Numeric Table associated with an ODBC Data Source is allocated inside the Data Source
[in]doCreateDictionaryFromContext(optional) Flag that specifies whether a Data Dictionary is created from the context of the ODBC Data Source
[in]initialMaxRowsInitial value of maximum number of rows in Numeric Table allocated in loadDataBlock() method
ODBCDataSource ( const std::string &  dbname,
const std::string &  tableName,
const std::string &  userName,
const std::string &  password,
const ODBCDataSourceOptions options,
size_t  initialMaxRows = 10 
)
inline

Constructor for the ODBCDataSource class

Parameters
[in]dbnameData Source Name as configured in settings of the ODBC driver
[in]tableNameName of a table to export from a data source
[in]userNameUsername for the data source
[in]passwordPassword for the Username in the data source
[in]optionsThe options of ODBC Data Source
[in]initialMaxRowsInitial value of maximum number of rows in Numeric Table allocated in loadDataBlock() method
ODBCDataSource ( const std::string &  connectionString,
const ODBCDataSourceOptions options,
size_t  initialMaxRows = 10 
)
inline

Constructor for the ODBCDataSource class

Parameters
[in]connectionStringThe connection string to ODBC Driver
[in]optionsThe options of ODBC Data Source
[in]initialMaxRowsInitial value of maximum number of rows in Numeric Table allocated in loadDataBlock() method

Member Function Documentation

services::Status createDictionaryFromContext ( )
inlinevirtual

Creates a Data Dictionary by extracting information from a Data Source

Reimplemented from DataSource.

services::Status freeHandles ( )
inline

Frees ODBC connection handles

size_t getNumberOfAvailableRows ( )
inlinevirtual

Returns the number of rows available in a Data Source

Returns
Number of rows

Implements DataSourceIface.

DataSourceIface::DataSourceStatus getStatus ( )
inlinevirtual

Returns the status of a Data Source

Returns
Status of the Data Source

Implements DataSourceIface.

virtual size_t loadDataBlock ( size_t  maxRows)
inlinevirtual

Loads a data block of a specified size into an internally allocated Numeric Table

Parameters
[in]maxRowsMaximum number of rows to load from a Data Source into the Numeric Table

Reimplemented from DataSource.

virtual size_t loadDataBlock ( size_t  maxRows,
NumericTable nt 
)
inlinevirtual

Loads a data block of a specified size into an externally allocated Numeric Table

Parameters
[in]maxRowsMaximum number of rows to load from a Data Source into the Numeric Table
ntExternally allocated Numeric Table
Returns
Actual number of rows loaded from the Data Source

Reimplemented from DataSource.

size_t loadDataBlock ( )
inlinevirtual

Loads a data block into an internally allocated Numeric Table

Reimplemented from DataSource.

size_t loadDataBlock ( NumericTable nt)
inlinevirtual

Loads a data block into a provided Numeric Table

Parameters
[in]ntPointer to the Numeric Table

Reimplemented from DataSource.


The documentation for this class was generated from the following file:

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