Catalog and Archive Service Generic Multi-valued Metadata Container
· A Multi-valued, generic Metadata container class. The class uses an internal
Map of string keys pointing to vectors of strings. The data
structure looks like the following:
[std:string key]⇒std:vector of std:strings
The multi-valued nature of the class is handled transparently by this Metadata
container. Since all values are stored internally as string vectors, the difference
between a scalar value and a non-scalar is handled by determining whether the list of
values for a particular key is greater than 1.
