Table of Contents - DSpace

Alternative flows andexceptionsa) At step 7, the target colour reading file doesn't exist inuser's computer.Use case end.b) At step 8, the colour reading file contains no colour.System displays display 'No reflectance(s)found'message in Reflectances' column.Use case end.Figure 4.6, continuedUse CaseGoal in ContextPreconditionSuccess End ConditionFailed End ConditionPrimary ActorTriggerExport digital colour reading file from central repositoryThe digital colour objects stored in central repository canbe exported into different formats of different vendorapplications.The central repository contains digital colour objects.The selected digital colour object(s) success to beexported in the format specified by the user.The selected colour reflectance object(s) failed to beexported in the format specified by the user.User of Web-based Colour Communication System.The actor executes “export colour file” function.Basic Flow of EventsActor Action1. User selects “export colour file”function.3. User selects the colours that he wishesto export from the central repository.System Response2. System displays “export colour file”module.4. System displays the browser page foruser to locate the directory of the hard drivefor him to export the digital colour readingfile.Figure 4.7: Textual description for use case scenario “Export digital colour reading filefrom central repository”69