Lyr Lysander

Hi there,

I've implemented an Entity with a seperate primary key class as embedded-id field. My embeddable primary key inherits from a super primary key class.

My problem is that the primary key class fields of the child class are correctliy initialized, but not the "derived" fields from the super class. These fields a empty.

The table/column-mappings are defined in my persistence.xml file.

What I am missing...

Best regards
Lysander

Here is the used code. As mentioned earlier, it is ugly Cobol :

01 display-new-methodname PIC X(6). 01 display-new-sig PIC X(3). ... move x"3c696e69743e00" to display-new-methodname. * same as: move z"<init>" to display-new-methodname. move x"28295600" to display-new-sig . * same as move z"()V" to display-new-sig . call GetMethodID using by reference JEnv by reference DisplayClass by reference display-new-methodname by reference display-new-sig returning display-new-methodId end-call ...

The converning class owns definitely a parameterless constructor.

public class Display { public Display(){} ... }

My first thought was, that there is something wrong with the used signature. I'm confused because of the blanks between <init> and ()V.

However, I used UFT8-Strings, which are zero-terminated, for the method name and the signature. 6 signs for the method anme and 3 signs for the signature.

The error message is confusing.

Hi there,

I am new to JNI and I try to call Java from a cobol program with JNI. The jvm is loaded properly and the FindClass works well.

If I call GetMethodID with the method-name <init> and the signature ()V I am getting the following error message:


FAILED: runJNI java.lang.NoSuchMethodError: <init> ()V


Consists in specifying the method signature (for the constructor) a problem?

Many thanks in advance

Lys.