SerializeNullable annotation not work

protocol

public class GetUserIdByIdRes {
    private @SerializeNullable byte[] userId;

    public GetUserIdByIdRes(@Deserialize("userId") byte[] userId) {
        this.userId = userId;
    }

    @Serialize
    public byte[] getUserId() {
        return userId;
    }
}

exception

java.util.concurrent.ExecutionException: io.activej.rpc.protocol.RpcRemoteException: java.lang.NullPointerException
	at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
	at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1928)
	at com.test.rookiedb.rpc.RookieClient.multiGet(RookieClient.java:150)
	at com.test.rookiedb.rpc.RookieClient.getUserIdById(RookieClient.java:168)
	at com.test.rookiedb.RookieDbEngine.getUserIdById(RookieDbEngine.java:190)
	at com.test.BaseEngine.read(BaseEngine.java:164)
	at com.test.DefaultEngine.read(DefaultEngine.java:116)
	at com.test.DefaultEngineTest$ReadTask.run(DefaultEngineTest.java:161)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
	at java.util.concurrent.FutureTask.run(FutureTask.java)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: io.activej.rpc.protocol.RpcRemoteException: java.lang.NullPointerException

[KciNKh]

In your original example, the location of the annotations is not correct. There are two solutions: either without getter and with public userId

public class GetUserIdByIdRes {

    @Serialize
    public byte @SerializeNullable [] userId;
}

in this case annotaion @Deserialize not required

or with getter with all serialize annotaions and priavte userId

public class GetUserIdByIdRes {
    private byte[] userId;

    public GetUserIdByIdRes(@Deserialize("userId") byte[] userId) {
        this.userId = userId;
    }

    @Serialize
    public byte @SerializeNullable [] getUserId() {
        return userId;
    }
}

• and @SerializeNullable location must be before [] - read more for example JSR308

[xsank]

@KciNKh thanks for your help~