Syntax

   FACTORY_DEF <ReaderKeyword> AttributeKeeperFactory
   [FACTORY_NAME <factory name>]
   [INPUT FEATURE_TYPE <factory type>
      [<attribute name> <attribute value>]*
      [<feature function>]*]+
   [KEEP_ATTRS [<FMEParsableText-encoded attr name>[,<FMEParsableText-encoded attr name>]*]
   [KEEP_LISTS [<FMEParsableText-encoded list attr name>[ <FMEParsableText-encoded list attr name>]*]
   [KEEP_FME_ATTRIBUTES (YES|NO)]
   [BUILD_FEATURE_TABLES (YES|NO)]
   [OUTPUT_ON_ATTRIBUTE_CHANGE [<FMEParsableText-encoded attr name>[,<FMEParsableText-encoded attr name>]*]
   [OUTPUT OUTPUT FEATURE_TYPE <feature type>
      [<attribute name> <attribute value>]*
      [<feature function>]*]*

Overview

   Removes all attributes and list attributes, except the specific ones you specify to be retained.

Parameters

   KEEP_ATTRS

      Specifies attributes to be kept.

   KEEP_LISTS

      Specifies list attributes to be kept (e.g. my_list{}).

   KEEP_FME_ATTRIBUTES

      Specifies whether to keep FME attributes (e.g. fme_type).

   BUILD_FEATURE_TABLES

      Specifies whether to build feature tables out of features. When this is enabled, features will
      be combined into feature tables and output in batches. Order of features is preserved, so when
      a feature table is input, any preceding features are output first.

   OUTPUT_ON_ATTRIBUTE_CHANGE

      When building feature tables, specifies that features should be output when any of the
      specified attributes changes values. This can be used to reduce blocking in streaming
      scenarios.