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From "Martin Desruisseaux (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SIS-393) Missing META-INF service declarations for authority factories
Date Fri, 20 Jul 2018 10:39:00 GMT

     [ https://issues.apache.org/jira/browse/SIS-393?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Martin Desruisseaux updated SIS-393:
------------------------------------
    Fix Version/s:     (was: 1.0)
                   1.1

> Missing META-INF service declarations for authority factories
> -------------------------------------------------------------
>
>                 Key: SIS-393
>                 URL: https://issues.apache.org/jira/browse/SIS-393
>             Project: Spatial Information Systems
>          Issue Type: Task
>          Components: Referencing
>    Affects Versions: 0.7, 0.8
>            Reporter: Martin Desruisseaux
>            Assignee: Martin Desruisseaux
>            Priority: Major
>             Fix For: 1.1
>
>
> The {{core/sis-referencing/src/main/resources/META-INF/services/}} directory registers
a {{CRSAuthorityFactory}}, but not yet any {{CSAuthorityFactory}}, {{DatumAuthorityFactory}}
or {{CoordinateOperationAuthorityFactory}}. The later in particular would be useful for an
easier access to the following method:
> {code:java}
> Set<CoordinateOperation> createFromCoordinateReferenceSystemCodes(String sourceCRS,
String targetCRS)
> {code}
> The reason why authority factories other than {{CRSAuthorityFactory}} are not yet registered
is because it is more convenient for Apache SIS to use a single instance for all kind of authority
factories (for sharing the cache). This can be done more cleanly in Java 9 using the new {{ServiceLoader}} capability.
In the meantime, users can get the factory with following code, which is unsafe, but should
work at least with SIS 0.8:
> {code:java}
> CoordinateOperationAuthorityFactory factory = (CoordinateOperationAuthorityFactory) CRS.getAuthorityFactory("EPSG");
> {code}



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