[rules-dev] ResourceType - why is it not an enum?

[Mark Proctor]

  On 21/09/2010 13:44, Wolfgang Laun wrote:
> I find that the implementation shown below is more Java-ish. It would 
> have some
> advantages when branching based on a ResourceType value, etc. No 
> errors show
> up when I use this in Eclipse.
The reason is that enums cannot be extended, so it would make it 
impossible for sub modules to add new types without changing core.

Mark
>
> YMMV.
> -W
>
> public enum ResourceType {
>
>     DRL       ( "Drools Rule Language",          "drl"  ),
>     XDRL      ( "Drools XML Rule Language",      "xdrl" ),
>     DSL       ( "Drools DSL",                    "dsl"  ),
>     DSLR      ( "Drools DSL Rule",               "dslr" ),
>     DRF       ( "Drools Rule Flow Language",     "rf"   ),
>     BPMN2     ( "Drools BPMN2 Language",         "bpmn" ),
>     DTABLE    ( "Decision Table",                "xls"  ),
>     PKG       ( "Binary Package",                "pkg"  ),
>     BRL       ( "Drools Business Rule Language", "brl"  ),
>     CHANGE_SET( "Change Set",                    "xcs"  ),
>     XSD       ( "XSD",                           "xsd"  );
>
>     private String  description;
>     private String  defaultExtension;
>
>     ResourceType( String description, String defaultExtension ) {
>         this.description = description;
>         this.defaultExtension = defaultExtension;
>     }
>
>     public static ResourceType getResourceType(final String 
> resourceName) {
>         return valueOf( resourceName );
>     }
>
>     public static ResourceType determineResourceType( final String 
> resourceName ) {
>         try{
>             return valueOf( resourceName );
>         } catch( Exception iae ){
>             return null;
>         }
>     }
>
>     public boolean matchesExtension( String resourceName ) {
>         return resourceName != null && resourceName.endsWith( 
> "."+defaultExtension );
>     }
>
>     public String getDefaultExtension() {
>         return defaultExtension;
>     }
>
>     public String getDescription() {
>         return description;
>     }
>
>     public String getName() {
>         return this.name <http://this.name>();
>     }
>
>     @Override
>     public String toString() {
>         return "ResourceType = '" + this.description + "'";
>     }
> }
>
>
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