[jboss-user] [Javassist user questions] - NullPointerException at javassist.bytecode.annotation.ArrayM
Hello,
I am getting a NullPointerException somewhere beyond my control.
Here is my code
ClassPool pool = ClassPool.getDefault();
| CtClass cc = pool.makeClass(class_name);
| cc.stopPruning(true);
| ClassFile cf = cc.getClassFile();
| ConstPool cp = cf.getConstPool();
|
| try {
| CtClass persistent_class =
pool.get("net.sourceforge.pbeans.annotations.PersistentClass");
|
| Annotation a = new Annotation(cp, persistent_class);
| a.addMemberValue("table", new StringMemberValue(class_name, cp));
| a.addMemberValue("audoIncrement", new BooleanMemberValue(true, cp));
|
| AnnotationsAttribute attr = new AnnotationsAttribute(cp,
AnnotationsAttribute.visibleTag);
| attr.setAnnotation(a);
|
| cf.addAttribute(attr);
| cf.setVersionToJava5();
| }
| catch (NotFoundException e1) { e1.printStackTrace(); }
and this is the stack trace
Exception in thread "main" java.lang.NullPointerException
at javassist.bytecode.annotation.ArrayMemberValue.write(ArrayMemberValue.java:132)
at javassist.bytecode.annotation.Annotation.write(Annotation.java:303)
at javassist.bytecode.AnnotationsAttribute.setAnnotations(AnnotationsAttribute.java:246)
at javassist.bytecode.AnnotationsAttribute.setAnnotation(AnnotationsAttribute.java:265)
at com.....PBeanGenerator.generatePBean(PBeanGenerator.java:61)
at com.....PBeanGenerator.main(PBeanGenerator.java:145)
I have not added an ArrayMemberValue so I'm confused why I'm getting a null
pointer there. Am I missing something?
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