Syntax

   FACTORY_DEF <ReaderKeyword> CounterFactory
   [FACTORY_NAME <factory name>]
   [START <number>]
   [SCOPE (Global|Local)]
   [DOMAIN <literal or attribute name>]
   [GROUP_BY [<FMEParsableText-encoded attr name>[ <FMEParsableText-encoded attr name>]*]
   [FLUSH_WHEN_GROUPS_CHANGE (YES|NO)]
   [COUNT_ATTR <attribute name>]
   [GROUP_ID_ATTR <attribute name>]
   [INPUT FEATURE_TYPE <factory type>
      [<attribute name> <attribute value>]*
      [<feature function>]*]+
   [OUTPUT OUTPUT FEATURE_TYPE <feature type>
      [<attribute name> <attribute value>]*
      [<feature function>]*]*
   [OUTPUT <REJECTED> FEATURE_TYPE <feature type>
      [<attribute name> <attribute value>]*
      [<feature function>]*]*

Overview

   This function provides a mechanism for generating unique numbers and assigning them to feature
   attributes during a translation. It can count features and perform group by in Local scope. It
   can also count features globally in a workspace based on the provided count domain.

Parameters

   START

      The starting value of the counter. The counter is incremented from the start value.

   SCOPE

      A string to limit the counting scope. When global, features are processed and counted globally
      across all CounterFactories.

   DOMAIN

      A string representing the domain of a counter. This allows many different counters to be used
      together during a single translation. Can be a literal string or an attribute name. Relevant
      with Global Scope.

   GROUP_BY

      The list of attribute names to group by. Relevant with Local Scope.

   FLUSH_WHEN_GROUPS_CHANGE

      Whether to process groups once all features have been received or when the group changes.
      Relevant with Local Scope.

   COUNT_ATTR

      The name of the attribute that will contain the count result.

   GROUP_ID_ATTR

      The name of the attribute that will contain the Group ID of a feature. The Group ID value will
      be a unique number associated with the group of a feature. The first group ID will start at 1,
      counting up for each unique group processed after.