com.gpudb.protocol

Class InsertRecordsRandomRequest.Options

java.lang.Object

com.gpudb.protocol.InsertRecordsRandomRequest.Options

Enclosing class:

InsertRecordsRandomRequest

public static final class InsertRecordsRandomRequest.Options
extends Object

A set of string constants for the InsertRecordsRandomRequest parameter 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:

Field Summary

Fields

Modifier and Type	Field and Description
static String	ALL This key indicates that the specifications relayed in the internal map are to be applied to all columns of the records.
static String	ATTR_NAME Use the desired column name in place of ATTR_NAME, and set the following parameters for the column specified.
static String	CARDINALITY If specified, limit the randomly generated values to a fixed set.
static String	INTERVAL If specified, generate values for all columns evenly spaced with the given interval value.
static String	MAX Maximum possible length for generated series; default is 500 records per series.
static String	MIN Minimum possible length for generated series; default is 100 records per series.
static String	NULL_PERCENTAGE If specified and if this column is nullable, then generate the given percentage of the count as nulls.
static String	SEED If provided, the internal random number generator will be initialized with the given value.
static String	TRACK_LENGTH This key-map pair is only valid for track data sets (an error is thrown otherwise).
static String	VALUE The seed value to use

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SEED

public static final String 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 } }.

• VALUE: The seed value to use

See Also:

Constant Field Values

VALUE

public static final String VALUE

The seed value to use

See Also:

Constant Field Values

ALL

public static final String ALL

This key indicates that the specifications relayed in the internal map are to be applied to all columns of the records.

• 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. 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.
• 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. If both minimum and maximum are provided, *max* must be greater than or equal to *min*. 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.
• 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 linearly 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 (e.g. char4) the prefix is dropped. No nulls will be generated for nullable columns.
• 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).
• 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.

See Also:

Constant Field Values

MIN

public static final String 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.

See Also:

Constant Field Values

MAX

public static final String 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.

See Also:

Constant Field Values

INTERVAL

public static final String 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 linearly 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 (e.g. char4) the prefix is dropped. No nulls will be generated for nullable columns.

See Also:

Constant Field Values

NULL_PERCENTAGE

public static final String 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).

See Also:

Constant Field Values

CARDINALITY

public static final String 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.

See Also:

Constant Field Values

ATTR_NAME

public static final String 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.

• 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. 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.
• 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. If both minimum and maximum are provided, *max* must be greater than or equal to *min*. 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.
• 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 linearly 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 (e.g. char4) the prefix is dropped. No nulls will be generated for nullable columns.
• 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).
• 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.

See Also:

Constant Field Values

TRACK_LENGTH

public static final String 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.

• 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. The minimum allowed value is 1. The maximum allowed value is 500.
• 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. The minimum allowed value is 1. The maximum allowed value is 500.

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Constant Field Values