Lists and Maps Support in Components

An alphabetically sorted list of components which you can use multivalue fields in:

COMPONENT	LIST	MAP	VARIANT	NOTE
Concatenate	✓	✓	✓
DataGenerator	✓	✓	✓
DataIntersection	✓	x	✓	Map/Variant is not a part of key
DBJoin	✓	x	x
DBJoin	✓	✓	✓	Map/Variant is not a part of key
Dedup	✓	x	x	Sorted input
Dedup	✓	x	✓	Unsorted input
Dedup	✓	✓	✓	Map is not a part of key
Denormalizer	✓	x	x
Denormalizer	✓	✓	✓	Map/Variant is not a part of key
ExtHashJoin	✓	x	✓
ExtHashJoin	✓	✓	✓	Map is not a part of key
ExtMergeJoin	✓	x	x
ExtMergeJoin	✓	✓	✓	Map/Variant is not a part of key
ExtSort	✓	x	x
ExtSort	✓	✓	✓	Map/Variant is not a part of key
Filter	✓	✓	✓
JSONExtract	✓	x	✓
JSONReader	✓	x	x
JSONWriter	✓	x	✓
LookupJoin	✓	✓	✓
LookupTableReaderWriter	✓	✓	✓
Merge	✓	x	x
Merge	✓	✓	✓	Map/Variant not a part of key
Normalizer	✓	✓	✓
Map	✓	✓	✓
RelationalJoin	✓	x	x
RelationalJoin	✓	✓	✓	Map/Variant is not a part of key
Rollup	✓	x	x	Sorted input
Rollup	✓	x	✓	Unsorted input
Rollup	✓	✓	✓	Map is not a part of key
SimpleCopy	✓	✓	✓
SimpleGather	✓	✓	✓
SortWithinGroups	✓	x	x
SortWithinGroups	✓	✓	✓	Map/Variant is not a part of key
XMLExtract	✓	x	x
XMLReader	✓	x	x
XMLWriter	✓	✓	x

At the moment, map, list and variant structures cannot be extracted as metadata from flat files.