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Filter Row If True

The FILTER-ROW-IF-TRUE directive filters records that match a condition.

Deprecated

Use the FILTER-ROWS-ON directive instead.

Syntax

filter-row-if-true <condition>

The <condition> is a valid boolean expression resulting in either a true or false.

Usage Notes

The FILTER-ROW-IF-TRUE directive evaluates the Boolean condition for each record. If the result of evaluation is true, it skips the record, otherwise it is passed as-is to the input of the next directive.

The <condition> is specified in the JEXL expression language with additional utility libraries are defined in the math and string namespaces.

For information on how to write JEXL expressions, see the commons-jexl documentation.

Examples

Using this record as an example:

{
  "id": 1,
  "name": "Joltie, Root",
  "hrlywage": "12.34",
  "gender": "Male",
  "country": "US"
}

Applying this directive:

filter-row-if-true country !~ US

would result in filtering out records for individuals that are not in the US (where country does not match "US").

Applying this directive:

filter-row-if-true (country !~ US && hrlywage > 12)

would result in filtering out records for individuals that are not in the US (where country does not match "US") and whose hourly wage (hrlywage) is greater than 12.