Access Library Function

Introduction

Inside the Determine Program use case, the user can choose 'astrogrid library function' as a source for a program or model. Library functions are integral algorithms of the astrogrid system that are stored on the grid.

Flow of Events

This use case begins at the Run Program Façade inside the Determine Program use case. Once 'library function' has been selected as the program source, the Run Program Façade accesses the Library Function Façade. From this point the user can designate a function directly (via command line, text box, pull down menu, etc) or search for an appropriate function from an astrogrid list. Once a function has been selected, the use case proceeds to NegotiateAccessToResource. If the library function is accessible to the user, it returns a list of input and output parameters (conforming to WSDL standards?). The Library Function Façade returns this information to the Run Program Façade, and the use case proceeds as Determine Program.

Sequence Diagram

-- ElizabethAuden - 15 Jun 2002