Filters	Description
No Filter	No filter applied to data. Process all available datapoint in a Window.
Boolean filter	Ensures that a Boolean value is either true or false.
Enum	Ensures that a string only contains values from a fixed set of specified values.
Null	Ensures that a field value is NULL.
String	Ensures that a string adheres to certain criteria.
Threshold filter	Ensures that a numeric value is either under or over a certain threshold.

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Example
Want to count only the NULL values for a certain field? Then you can use a Volume Validator and apply a NULL filter.

Boolean filter

Filter Boolean datapoints as either true or false for a specified field.

Configuration parameters

Parameter name	Parameter values
Filter type	Boolean filter
Field	List of source fields with Boolean data types
Operator	Is true Is false

Enum

Filter string datapoints based on a set of specified values.

Configuration parameters

Parameter name	Parameter values
Field	List of source fields with string data types
Operator	Is in Is not in
Value	List of strings

Null

Filters datapoints that are Null for a specified field.

Configuration parameters

Parameter name	Parameter value
Field	List of source fields
Operator	Is Is not

String

Filter string datapoints to match specific criteria.

Configuration parameters

Parameter name	Parameter values
Field	List of source fields with string data types
Operator	Is empty Is not empty Contains Does not contain Starts with Ends with Is exactly Regex
Value	String

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Regex filter syntax
Depending on source system, Validio leverages different regex syntaxes:

For Data Warehouses and Query Engines, regex filters are applied in the source system. For more information on that syntax, refer to the regex syntax of your specific source system.

For Object Storages and Data Streams, the regex syntax is compatible with the Rust regex library. For information on that syntax, refer to Rust - regex crate syntax.

Threshold Filter

Filter individual datapoints based on a set value.

Configuration parameters

Parameter name	Parameter values
Field	List of source fields with numeric data types
Operator (*)	Equal to Not equal to Greater than Greater than or equal to Less than Less than or equal to
Value	Float number

* Specifies the 'allowed region'. For example, Greater than or equal than 5 specifies the allowed region, and all values strictly less than five are be filtered.