ExpressionDatatypeFilter

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Data Stream Processing > Processing Modules > Filtering Modules

Description

The ExpressionDatatypeFilter processing module is a simple filtering module which removes expression which does not match the specified datatypes. It operated on Features and removes Expression from them. It is often used in combination in complex scripts where multiple datatype are required at one stage of processing, but where the expression collection of the Features needs to be simplified at a later stage.

Parameters

  • <datatype> : the datatype of expression which will be allowed to remain in the Features

Example

This script show a how ExpressionDatatypeFilter can be configured

<zenbu_script>
   <stream_queue>
	<spstream module="ExpressionDatatypeFilter">
		<datatype>tagcount_pm</datatype>
		<datatype>tpm</datatype>
	</spstream>
   </stream_queue>
</zenbu_script>