The set of "value" types that can be used in any place a non-null value
can be specified. This set includes the <ref> and <idref> elements, any of the
component types (<bean>, <service>, etc.) as inline components, the
generic <value> element for types sourced from string values, and any of the
collection types (<set>, <list>, <array>, <map>, <props>).
The <null> type is NOT a member of this group.
|