Creating and Destroying a ResourceDescription

The first step in querying ResourceBroker for a resource is describing the resource you want. For example, you might decide that you want a hardware resource running the operating system Darwin. This can be expressed by specifying a name and value pair, ``os.name=Darwin'' say. In point of fact, this is exactly how GAT functions. One creates a ResourceDescription, using standard constructs, that contains a well-defined set of name value pairs that describes the hardware or software resource that one wishes to depict. This ResourceDescription can then be used to query the ResourceBroker or it can simply be destroyed.