@Documented
@Retention(value=RUNTIME)
@Target(value=METHOD)
public @interface Nullable
Storable
property can have a null value. By
default, all Storable properties are required to have a non-null value. It
is illegal to declare a property as nullable whose type is a primitive
non-object.
Example:
public interface UserInfo extends Storable<UserInfo> { @Nullable String getName(); void setName(String name); ... }
If the repository does not allow a property to be declared as nullable
because the underlying schema differs, it can be also annotated as Independent
. This makes it easier for a common set of Storables to interact
with schemas which are slightly different. Attempting to persist null into a
property for which null is not allowed will likely result in a constraint
exception.
Copyright © 2006-2013 Amazon Technologies, Inc.. All Rights Reserved.