SoftwareReuse.pptVIP

Product instance development Elicit stakeholder requirements Use existing family member as a prototype Choose closest-fit family member Find the family member that best meets the requirements Re-negotiate requirements Adapt requirements as necessary to capabilities of the software Adapt existing system Develop new modules and make changes for family member Deliver new family member Document key features for further member development Product line configuration Design time configuration The product line is adapted and changed according to the requirements of particular customers. Deployment time configuration The product line is configured by embedding knowledge of the customer’s requirements and business processes. The software source code itself is not changed. Deployment-time configuration * Chapter 16 Software reuse Levels of deployment time configuration Component selection, where you select the modules in a system that provide the required functionality. Workflow and rule definition, where you define workflows (how information is processed, stage-by-stage) and validation rules that should apply to information entered by users or generated by the system. Parameter definition, where you specify the values of specific system parameters that reflect the instance of the application that you are creating Chapter 16 Software reuse * COTS product reuse A commercial-off-the-shelf (COTS) product is a software system that can be adapted for different customers without changing the source code of the system. COTS systems have generic features and so can be used/reused in different environments. COTS products are adapted by using built-in configuration mechanisms that allow the functionality of the system to be tailored to specific customer needs. For example, in a hospital patient record system, separate input forms and output reports might be defined for different types of patient. Chapter 16 Software reuse * Benefits of COTS reuse As with other types of reuse, mor