record components as a first class reflection element
Alex Buckley
alex.buckley at oracle.com
Tue Sep 24 19:33:18 UTC 2019
At first glance, this is sensible because of the first-class status in
the JLS of record components and their mapping to accessors.
Based on a check of other implementations of AnnotatedElement, consider
`boolean isVarArgs()` (IIRC a varargs component will be allowed) and
`String toGenericString()`.
Alex
On 9/24/2019 12:05 PM, Vicente Romero wrote:
> Hi amber experts,
>
> We are considering our next move in the reflection area for records. It
> will be hoisting record components to a first class status in the
> reflection engine. Our current proposal is to define a new class named:
> java.lang.reflect.RecordComponent which will will be roughly defined as:
>
> public final class RecordComponent implements AnnotatedElement {
> private String name;
> private Class<?> type;
> private Method accessor;
>
> public String getName() { return name; }
>
> public Class<?> getType() { return type; }
>
> public Type getGenericType() {...}
>
> public AnnotatedType getAnnotatedType() {....}
>
> public Method getAccessor() { return accessor; }
> }
>
> Along with this change we are also proposing changes to java.lang.Class.
> Our proposal there is to remove current method:
> java.lang.Class::getRecordAccessors and add a new method named:
> java.lang.Class::getRecordComponents which will return a array of
> java.lang.reflect.RecordComponents. Thanks in advance for sharing any
> feedback on this proposal,
>
> Vicente
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