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https://issues.apache.org/jira/browse/JENA-1495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16385151#comment-16385151
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A. Soroka commented on JENA-1495:
---------------------------------
Thanks, [~jaco0646]! We should be able to incorporate this without too much
difficulty.
> Covariant return type for Model's PrefixMapping methods.
> --------------------------------------------------------
>
> Key: JENA-1495
> URL: https://issues.apache.org/jira/browse/JENA-1495
> Project: Apache Jena
> Issue Type: Improvement
> Components: Core
> Affects Versions: Jena 3.6.0
> Reporter: Adam Jacobs
> Priority: Trivial
> Labels: easyfix
>
> The {{Model}} interface inherits several methods from {{PrefixMapping}} which
> return {{this}}.
> The return type of these methods can be refined to allow call chaining with
> the {{Model}} object.
> There appear to be two concrete implementations of {{Model}} which override
> the {{PrefixMapping}} methods: {{ModelCom}} and {{SecuredModelImpl}}. Steps
> to add covariant return types for prefix mapping are as follows.
> Add these six methods to the Model interface.
> # Model setNsPrefix( String prefix, String uri );
> # Model removeNsPrefix( String prefix );
> # Model clearNsPrefixMap();
> # Model setNsPrefixes( PrefixMapping other );
> # Model setNsPrefixes( Map<String, String> map );
> # Model withDefaultMappings( PrefixMapping map );
> ...and update ModelCom accordingly.
> Add these six methods to the SecuredModel interface.
> # SecuredModel setNsPrefix( String prefix, String uri );
> # SecuredModel removeNsPrefix( String prefix ); // This method is already
> defined.
> # SecuredModel clearNsPrefixMap();
> # SecuredModel setNsPrefixes( PrefixMapping other );
> # SecuredModel setNsPrefixes( Map<String, String> map );
> # SecuredModel withDefaultMappings( PrefixMapping map );
> ...and update SecuredModelImpl accordingly.
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