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https://issues.apache.org/jira/browse/SIS-603?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Desruisseaux resolved SIS-603.
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Resolution: Fixed
> Make SQLStore abstract for allowing more customization
> ------------------------------------------------------
>
> Key: SIS-603
> URL: https://issues.apache.org/jira/browse/SIS-603
> Project: Spatial Information Systems
> Issue Type: Task
> Components: Storage
> Affects Versions: 1.4
> Reporter: Martin Desruisseaux
> Assignee: Martin Desruisseaux
> Priority: Major
> Fix For: 1.5
>
>
> {{SQLStore}} needs to be more extensible for making possible to use it as the
> basis of a Geopackage data store. The most important change is that the array
> of {{ResourceDefinitions}} (which specifies the tables, views or queries to
> view as {{FeatureSet}} resources) cannot be specified at construction time,
> because in a Geopackage file, this array is determined by the
> {{"gpkg_contents"}} table. It is more convenient to read this table _after_
> {{SQLStore}} construction because it allows reusing an existing connection
> and makes some services such as {{findCRS(srid)}} or {{findSRID(crs)}}
> available. However, this change requires that we make {{SQLStore}} an
> abstract class, because the {{ResourceDefinition}} objects are now specified
> by an {{readResourceDefinitions()}} method that sub-classes must override.
> Another change is that the type of resources returned by {{SQLStore}} needs
> to be relaxed from {{FeatureSet}} to {{Resource}}.
> Another change is that a low-level access to the database is needed, for
> allowing subclasses such as a Geopackage store to perform their own SQL
> query. This is done by a new class, {{DataAccess}}.
> h1. Incompatible changes
> Above-described changes contain the above incompatible changes:
> * {{SQLStore}} class has been made abstract.
> * {{ResourceDefinitions...}} argument in {{SQLStore}} constructor has been
> removed.
> * {{SQLStore.components()}} and {{findResource(String)}} now return
> {{Resource}} instead of {{FeatureSet}}.
> All the behavior of the old {{SQLStore}} are provided by
> {{SimpleFeatureStore}}. If any of above incompatible changes break an
> existing code, replacing {{SQStore}} by {{SimpleFeatureStore}} should fix the
> problem in mos cases.
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