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Bug 364232

Summary:	Standardize the data service pattern with a common base class
Product:	z_Archived	Reporter:	Konstantin Komissarchik <konstantin>
Component:	Sapphire	Assignee:	Konstantin Komissarchik <konstantin>
Status:	CLOSED FIXED	QA Contact:
Severity:	enhancement
Priority:	P3	CC:	shenxue.zhou
Version:	unspecified	Keywords:	plan
Target Milestone:	---
Hardware:	All
OS:	All
Whiteboard:

Description Konstantin Komissarchik

2011-11-19 17:46:04 EST

Many of the services that form Sapphire API fall in the category of providing data (as opposed to operations). For these data services, a pattern has emerged that captures a way to handle caching computation of this data and handling listening/refresh. This pattern is currently manually replicated among various services such as EnablementService. Rather than continuing this way, we should extract this pattern into a common base class... DataService.

Comment 1 Konstantin Komissarchik

2011-11-20 22:52:09 EST

Defined DataService as the common base for all such services and converted the following list of services to use this common base. There are other services that should probably be made data services, but this will do for now.

DefaultValueService
DependenciesAggregationService
DependenciesService
DerivedValueService
EnablementService
FileExtensionsService
ImageService
InitialValueService
JavaTypeConstraintService
PossibleTypesService

Comment 2 Shenxue Zhou

2011-11-28 17:40:43 EST

Verified the class hierarchy of the generic Service class and their usage in Sapphire samples and our internal Sapphire adopter product.