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Analysis

Overview

This task is about the primitives that are needed to manage changes. These include primitive changes and primitive operations about changes.

Task requirements

• Primitive operations about changes which include the following:
  • create - which should create a change by class and an id. The design section should decide on the uniqueness of the id of a change. This is needed to manage changes on a server for example.
  • destroy - which should destroy a change by an id.
  • set - should be able to set the change with an id for a property by its property id and a String representing its value.
• One more change should be added so that the set of changes fully satisfies our needs and this is the so called UnmanagedChange. It should represent a change that cannot be managed in a logical way. For Sophie2 this could be saving or opening books.
• A decent documentation should be created that explains the primitives - change types and operations with them.

Task result

• Source code
• wiki page somewhere - may be only a wiki content in the design section.

Implementation idea

• review code in [(source:trunk/sophie2-platform/modules/org.sophie2.core/src/main/java/org/sophie2/core/prolib/events Changes in event package.)]

Related

PRO_CHANGE_PRIMITIVES_R0
PRO_CHANGE_TRANSACTION_SAFETY_R0
PRO_CHANGE_COMPOSING_R0
PRO_CHANGE_MANAGER_R0

How to demo

Design

Implementation

Testing

Comments