Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/582#discussion_r28691764
--- Diff:
flink-java/src/main/java/org/apache/flink/api/java/typeutils/ObjectArrayTypeInfo.java
---
@@ -143,6 +143,18 @@ else if (type instanceof Class<?> && ((Class<?>)
type).isArray()
throw new InvalidTypesException("The given type is not a valid
object array.");
}
+ /**
+ * Creates a new {@link
org.apache.flink.api.java.typeutils.ObjectArrayTypeInfo} from a
+ * {@link TypeInformation} for the component type.
+ *
+ * <p>
+ * This must be used in cases where the complete type of the array is
not available as a
+ * {@link java.lang.reflect.Type} or {@link java.lang.Class}.
+ */
+ public static <T, C> ObjectArrayTypeInfo<T, C>
getInfoFor(TypeInformation<C> componentInfo) {
+ return new ObjectArrayTypeInfo<T, C>(Object[].class,
componentInfo.getTypeClass(), componentInfo);
--- End diff --
Is `Object[].class` actually correct? Why not give the class of the real
array type? There are a few ways to get that, for example
`Array.newInstance(clazz, 0).getClass();`
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