Howto prevent SEAM from mapping POJO ?

[w17chm4n]

Hi ! I have another problem. As I need a drop-down menu in my application, and data from which it`s created isn`t in database, I`m trying to do sth like this (look @ questionTypeList):

@Stateful
@Scope(ScopeType.SESSION)
@Name("QuestionController")
public class QuestionControllerBean implements QuestionController {

 @Logger
 private Log log;

 @In(create = true)
 private QuestionManager questionManager;

 @In(create = true)
 private PictureManager pictureManager;

 @In(required = false)
 private QuestionCategory questionCategory;

 @In(required = false)
 private Question question;

 @DataModel("answerList")
 private List<Answer> answerList;

 @In(required = false)
 @DataModelSelection("answerList")
 private Answer answer;

 @DataModel("questionTypeList")
 private List<QuestionType> questionTypeList;

 @In(required = false)
 @DataModelSelection("questionTypeList")
 private QuestionType questionType;

 @Out(required = false)
 private Picture picture;

 private int fileSize;
 private byte [] data;
 private String fileName;
 private String contentType;

 public void addQuestion() {
 if(fileName == null) {
 question.setQuestionType(questionType.getQuestionType());
 question.setCategory(questionCategory);
 questionManager.addQuestion(question);
 } else {
 picture.setQuestion(question);
 question.setPicture(picture);
 question.setQuestionType(questionType.getQuestionType());
 question.setCategory(questionCategory);
 questionManager.addQuestion(question);
 pictureManager.addPicture(picture);

 }
 }

 public void removeQuestion() {
 }

 public void selectQuestion() {
 }

 public void addAnswer() {
 }

 public void removeAnswer() {
 }

 @Factory("questionTypeList")
 public void createQuestionTypeList() {
 questionTypeList = new ArrayList<QuestionType>();
 questionTypeList.add(new QuestionType(Commons.INPUT,"Input answer as text"));
 questionTypeList.add(new QuestionType(Commons.SELECT_ONE,"Select one answer"));
 questionTypeList.add(new QuestionType(Commons.SELECT_MANY,"Select many answers"));
 }

 public void addPicture() {
 picture = new Picture(data, fileName, new Date());
 picture.setQuestion(question);
 }

 public byte[] getData() {
 return data;
 }

 public void setData(byte[] data) {
 this.data = data;
 }

 public String getFileName() {
 return fileName;
 }

 public void setFileName(String fileName) {
 this.fileName = fileName;
 }

 public String getContentType() {
 return contentType;
 }

 public void setContentType(String contentType) {
 this.contentType = contentType;
 }

 public int getFileSize() {
 return fileSize;
 }

 public void setFileSize(int fileSize) {
 this.fileSize = fileSize;
 }

 @Remove @Destroy
 public void destroy() {}

}

It uses a POJO

public class QuestionType {

 private int QuestionType;
 private String label;

 public QuestionType() {
 }

 public QuestionType(int questionType, String label) {
 this.QuestionType = questionType;
 this.label = label;
 }

 public int getQuestionType() {
 return QuestionType;
 }

 public void setQuestionType(int QuestionType) {
 this.QuestionType = QuestionType;
 }

 public String getLabel() {
 return label;
 }

 public void setLabel(String label) {
 this.label = label;
 }

}

and a simple class for static variables

public class Commons {

 public static final int INPUT = 0;
 public static final int SELECT_ONE = 1;
 public static final int SELECT_MANY = 2;

}

When I try to submit my form (addQuestion method) i get the following error:

org.hibernate.MappingException: Unknown entity: java.lang.Object

As i think, the problem is that JBoss is trying to map POJO and the Commons class to the database, because these files r in the same jar as the normal seam components and entities.

So, is there a way to prevent seam from trying to map those two files?

[pmuir]

Mark properties on entities you don't want to be mapped @Transient.

[w17chm4n]

The problem is that i don`t want to map whole classes, Commons and QuestionType, not only some properties.

[pmuir]

Well don't put @Entity on them then.

[w17chm4n]

Huh ? As u can see above, on Commons class and Question type there are no @Entity annotations...

[pmuir]

What about picture?

[w17chm4n]

Picture entity is not the problem here. The code works fine when I remove Common and QuetionType classes (also commeting all depencies in the code) so everything is about the fact that I want to have simple java class (POJO or any other, like Commons) in the same jar which helds Seam Components. I need those classes to create and outject a hardcoded dropdown menu.

[pmuir]

Ok, I'll try to help you one more time but its hard when you don't help yourself. But if you are struggling with the basics I suggest getting a book about Seam and Hibernate/JPA

You do picture.setQuestion(question); therefore your picture class (which you say is an entity) has a reference to question. So, when you persist picture, it will have a reference to question, which must be marked @Transient. Is it?

[w17chm4n]

No, that isn`t a problem at all. Nevertheless I`ve managed to fix my problem by changing QuestionType class to entity and persisting some data from which I`m creating selectOneMenu.
Thx for Your time !