executeTransaction() throws NullPointerException

[zaki50]

Goal

Calling Realm#executeTransaction() and DynamicRealm#executeTransaction() against closed instance throws IllegalStateException with message This Realm instance has already been closed, making it unusable..

executeTransaction() should call checkIfValid() before calling checkAllowWritesOnUiThread().

Actual Results

Got java.lang.NullPointerException: Attempt to read from field 'io.realm.internal.Capabilities io.realm.internal.OsSharedRealm.capabilities' on a null object reference

Steps & Code to Reproduce

Calling Realm#executeTransaction() and DynamicRealm#executeTransaction() against closed Realm or DynamicRealm instance.

Version of Realm and tooling

Realm version(s): 10.6.0

Realm Sync feature enabled: both

Android Studio version: ?

Android Build Tools version: ?

Gradle version: ?

Which Android version and device(s): ?

[cmelchior]

Ups. Good catch 👍

[zaki50]

@cmelchior DynamicRealm has the same issue https://github.com/realm/realm-java/blob/master/realm/realm-library/src/main/java/io/realm/DynamicRealm.java#L301