[jboss-dev] generic collection item type

[Alexey Loubyansky]

Yes, that didn't sound right, sorry.
What I wanted to say is that the argument to getTypeInfo() should be the 
one obtained with e.g. Field.getGenericType() or 
Method.getGenericReturnType() and so on. Otherwise, the generic-specific 
information won't be available. E.g. here is instance variable vs local 
variable

       List<String> sList = new ArrayList<String>();
       Type gType = sList.getClass();
       System.out.println("type: " + gType);
       classInfo = (ClassInfo) configuration.getTypeInfo(gType);
       System.out.println("type args: " + 
classInfo.getActualTypeArguments());

       gType = sListField.getType();
       System.out.println("type: " + gType);
       classInfo = (ClassInfo) configuration.getTypeInfo(gType);
       System.out.println("type args: " + 
classInfo.getActualTypeArguments());

       Field sListField = getClass().getDeclaredField("sList");
       gType = sListField.getGenericType();
       System.out.println("type: " + gType);
       classInfo = (ClassInfo) configuration.getTypeInfo(gType);
       System.out.println("type args: " + 
classInfo.getActualTypeArguments());

The output is

type: class java.util.ArrayList
type args: null
type: interface java.util.List
type args: null
type: java.util.List<java.lang.String>
type args: [Lorg.jboss.reflect.spi.TypeInfo;@7a78d3

Alexey

Ales Justin wrote:
>  >> configuration.getTypeInfo(...) may be a wrong way to load a generic 
> type
> but even if I declare a field of type JBossEnterpriseBeansMetaData and
> 
> But I don't understand this.
> 
> Cheers,
>     Ales