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gpudb::InsertRecordsRandomRequest Struct Reference

A set of input parameters for const. More...

#include <gpudb/protocol/insert_records_random.h>

Public Member Functions

 InsertRecordsRandomRequest ()
 Constructs an InsertRecordsRandomRequest object with default parameter values. More...
 
 InsertRecordsRandomRequest (const std::string &tableName_, const int64_t count_, const std::map< std::string, std::map< std::string, double > > &options_)
 Constructs an InsertRecordsRandomRequest object with the specified parameters. More...
 

Public Attributes

std::string tableName
 
int64_t count
 
std::map< std::string,
std::map< std::string, double > > 
options
 

Detailed Description

A set of input parameters for const.

Generates a specified number of random records and adds them to the given table. There is an optional parameter that allows the user to customize the ranges of the column values. It also allows the user to specify linear profiles for some or all columns in which case linear values are generated rather than random ones. Only individual tables are supported for this operation.

This operation is synchronous, meaning that a response will not be returned until all random records are fully available.

Definition at line 26 of file insert_records_random.h.

Constructor & Destructor Documentation

gpudb::InsertRecordsRandomRequest::InsertRecordsRandomRequest ( )
inline

Constructs an InsertRecordsRandomRequest object with default parameter values.

Definition at line 33 of file insert_records_random.h.

gpudb::InsertRecordsRandomRequest::InsertRecordsRandomRequest ( const std::string &  tableName_,
const int64_t  count_,
const std::map< std::string, std::map< std::string, double > > &  options_ 
)
inline

Constructs an InsertRecordsRandomRequest object with the specified parameters.

Parameters
[in]tableName_Table to which random records will be added. Must be an existing table. Also, must be an individual table, not a collection of tables, nor a view of a table.
[in]count_Number of records to generate.
[in]options_Optional parameter to pass in specifications for the randomness of the values. This map is different from the options parameter of most other endpoints in that it is a map of string to map of string to doubles, while most others are maps of string to string. In this map, the top level keys represent which column's parameters are being specified, while the internal keys represents which parameter is being specified. These parameters take on different meanings depending on the type of the column. Below follows a more detailed description of the map:
  • gpudb::insert_records_random_seed: If provided, the internal random number generator will be initialized with the given value. The minimum is 0. This allows for the same set of random numbers to be generated across invocation of this endpoint in case the user wants to repeat the test. Since options, is a map of maps, we need an internal map to provide the seed value. For example, to pass 100 as the seed value through this parameter, you need something equivalent to: 'options' = {'seed': { 'value': 100 } }
  • gpudb::insert_records_random_all: This key indicates that the specifications relayed in the internal map are to be applied to all columns of the records.
    • gpudb::insert_records_random_min: For numerical columns, the minimum of the generated values is set to this value. Default is -99999. For point, shape, and track columns, min for numeric 'x' and 'y' columns needs to be within [-180, 180] and [-90, 90], respectively. The default minimum possible values for these columns in such cases are -180.0 and -90.0. For the 'TIMESTAMP' column, the default minimum corresponds to Jan 1, 2010. For string columns, the minimum length of the randomly generated strings is set to this value (default is 0). If both minimum and maximum are provided, minimum must be less than or equal to max. Value needs to be within [0, 200]. If the min is outside the accepted ranges for strings columns and 'x' and 'y' columns for point/shape/track, then those parameters will not be set; however, an error will not be thrown in such a case. It is the responsibility of the user to use the all parameter judiciously.
    • gpudb::insert_records_random_max: For numerical columns, the maximum of the generated values is set to this value. Default is 99999. For point, shape, and track columns, max for numeric 'x' and 'y' columns needs to be within [-180, 180] and [-90, 90], respectively. The default minimum possible values for these columns in such cases are 180.0 and 90.0. For string columns, the maximum length of the randomly generated strings is set to this value (default is 200). If both minimum and maximum are provided, max must be greater than or equal to min. Value needs to be within [0, 200]. If the max is outside the accepted ranges for strings columns and 'x' and 'y' columns for point/shape/track, then those parameters will not be set; however, an error will not be thrown in such a case. It is the responsibility of the user to use the all parameter judiciously.
    • gpudb::insert_records_random_interval: If specified, generate values for all columns evenly spaced with the given interval value. If a max value is specified for a given column the data is randomly generated between min and max and decimated down to the interval. If no max is provided the data is linerally generated starting at the minimum value (instead of generating random data). For non-decimated string-type columns the interval value is ignored. Instead the values are generated following the pattern: 'attrname_creationIndex#', i.e. the column name suffixed with an underscore and a running counter (starting at 0). For string types with limited size (eg char4) the prefix is dropped. No nulls will be generated for nullable columns.
    • gpudb::insert_records_random_null_percentage: If specified, then generate the given percentage of the count as nulls for all nullable columns. This option will be ignored for non-nullable columns. The value must be within the range [0, 1.0]. The default value is 5% (0.05).
    • gpudb::insert_records_random_cardinality: If specified, limit the randomly generated values to a fixed set. Not allowed on a column with interval specified, and is not applicable to WKT or Track-specific columns. The value must be greater than 0. This option is disabled by default.
  • gpudb::insert_records_random_attr_name: Use the desired column name in place of attr_name, and set the following parameters for the column specified. This overrides any parameter set by all.
    • gpudb::insert_records_random_min: For numerical columns, the minimum of the generated values is set to this value. Default is -99999. For point, shape, and track columns, min for numeric 'x' and 'y' columns needs to be within [-180, 180] and [-90, 90], respectively. The default minimum possible values for these columns in such cases are -180.0 and -90.0. For the 'TIMESTAMP' column, the default minimum corresponds to Jan 1, 2010. For string columns, the minimum length of the randomly generated strings is set to this value (default is 0). If both minimum and maximum are provided, minimum must be less than or equal to max. Value needs to be within [0, 200]. If the min is outside the accepted ranges for strings columns and 'x' and 'y' columns for point/shape/track, then those parameters will not be set; however, an error will not be thrown in such a case. It is the responsibility of the user to use the all parameter judiciously.
    • gpudb::insert_records_random_max: For numerical columns, the maximum of the generated values is set to this value. Default is 99999. For point, shape, and track columns, max for numeric 'x' and 'y' columns needs to be within [-180, 180] and [-90, 90], respectively. The default minimum possible values for these columns in such cases are 180.0 and 90.0. For string columns, the maximum length of the randomly generated strings is set to this value (default is 200). If both minimum and maximum are provided, max must be greater than or equal to min. Value needs to be within [0, 200]. If the max is outside the accepted ranges for strings columns and 'x' and 'y' columns for point/shape/track, then those parameters will not be set; however, an error will not be thrown in such a case. It is the responsibility of the user to use the all parameter judiciously.
    • gpudb::insert_records_random_interval: If specified, generate values for all columns evenly spaced with the given interval value. If a max value is specified for a given column the data is randomly generated between min and max and decimated down to the interval. If no max is provided the data is linerally generated starting at the minimum value (instead of generating random data). For non-decimated string-type columns the interval value is ignored. Instead the values are generated following the pattern: 'attrname_creationIndex#', i.e. the column name suffixed with an underscore and a running counter (starting at 0). For string types with limited size (eg char4) the prefix is dropped. No nulls will be generated for nullable columns.
    • gpudb::insert_records_random_null_percentage: If specified and if this column is nullable, then generate the given percentage of the count as nulls. This option will result in an error if the column is not nullable. The value must be within the range [0, 1.0]. The default value is 5% (0.05).
    • gpudb::insert_records_random_cardinality: If specified, limit the randomly generated values to a fixed set. Not allowed on a column with interval specified, and is not applicable to WKT or Track-specific columns. The value must be greater than 0. This option is disabled by default.
  • gpudb::insert_records_random_track_length: This key-map pair is only valid for track data sets (an error is thrown otherwise). No nulls would be generated for nullable columns.
    • gpudb::insert_records_random_min: Minimum possible length for generated series; default is 100 records per series. Must be an integral value within the range [1, 500]. If both min and max are specified, min must be less than or equal to max.
    • gpudb::insert_records_random_max: Maximum possible length for generated series; default is 500 records per series. Must be an integral value within the range [1, 500]. If both min and max are specified, max must be greater than or equal to min.

Definition at line 272 of file insert_records_random.h.

Member Data Documentation

int64_t gpudb::InsertRecordsRandomRequest::count

Definition at line 280 of file insert_records_random.h.

std::map<std::string, std::map<std::string, double> > gpudb::InsertRecordsRandomRequest::options

Definition at line 281 of file insert_records_random.h.

std::string gpudb::InsertRecordsRandomRequest::tableName

Definition at line 279 of file insert_records_random.h.


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