Ticket	Summary	Owner	Status	Type	Component	Priority	Effort	Importance
#337	BASE_PERSISTENCE_PROPERTY_FORMAT_R0	peko	closed	planned_task	BASE_PERSISTENCE	3	1	0
Reported by Astea, 4 years ago.
Description	wiki page: BASE_PERSISTENCE_PROPERTY_FORMAT_R0 - effort: 1d
Analysis_owners	peko
Analysis_reviewers	pav
Analysis_score	3.5
Design_owners	mira, deni
Design_reviewers	meddle, meddle
Design_score	0
Imp._reviewers	meddle
Imp._score	0
Test_score	0

Analysis

Overview

This task is about persisting ProObjects/Properties. Generally the idea is that in Sophie 2 we have immutables and ProObjects/Properties and they have to be persisted. This task is responsible for persisting the property part.

Task requirements

• ProObjects should be persisted and the following should be taken into consideration when designing how this will be done:
  • ProObjects and immutables form an acyclic graph of dependencies in Sophie 2. Having this in mind, persisting should be designed in such a way that:
    • saving and especially loading shouldn't be affected by the order of traversal.
    • usage of SharedSaver and SharedLoader should be explained in the context of persisting ProObjects/Properties.
      • sample use case with explanations should be provided.
      • explanations on why the proposed design won't be affected by the loading order.
    • immutables are the leaves in this graph of dependencies. Explain how persisting ProObject/Properties should collaborate with persisting of immutables to achieve a working scheme for persisting the whole graph.
  • Think of scenarios and define the way properties save/load.
• Create a wiki page with the design of the format that will handle the things stated above.
  • provide scenarios to show that this format is really needed.
  • create diagrams.
  • give concrete explanations.
• All important wiki content should be put in the corresponding section of a wiki page => BASE_PERSISTENCE

Task result

• wiki page.

Implementation idea

• view code:
  • => trunk/sophie2-platform/modules/org.sophie2.base.persistence
  • => trunk/sophie2-platform/modules/org.sophie2.main.model.book.format.r1/src/main/java/org/sophie2/main/model/book/format/r1
  • => trunk/sophie2-platform/modules/org.sophie2.main.model.book.format.r2/src/main/java/org/sophie2/main/model/book/format/r2
• View the related things.
• Design format and create a wiki page with the task requirements fulfilled.

Related

• BASE_PERSISTENCE_COMMONS_R0
• BASE_PERSISTENCE_INTERMEDIATE_STORAGE_R0
• BASE_PERSISTENCE_FORMAT_REGISTRY_R0
• BASE_PERSISTENCE_FORMAT_POINT_R0
• BASE_PERSISTENCE_IMMUTABLES_R0

How to demo

• show the wiki page and explain the things described there.

Design

^{(Describe your design here.)}

Implementation

^{(Describe and link the implementation results here (from the wiki or the repository).)}

Testing

^{(Place the testing results here.)}

Comments

^{(Write comments for this or later revisions here.)}