loading composition from another entity giving exception

Hi
I am trying to load the composition Entity from another Entity inside “initNewItem” and getting the following exception


java.lang.IllegalStateException: Invalid datasource state: INVALID
	at com.haulmont.cuba.gui.data.impl.CollectionPropertyDatasourceImpl.checkState(CollectionPropertyDatasourceImpl.java:267)
	at com.haulmont.cuba.gui.data.impl.CollectionPropertyDatasourceImpl.addItem(CollectionPropertyDatasourceImpl.java:283)
	at com.company.team.gui.recruitmentinterviewappraisal.RecruitmentInterviewAppraisalEdit.loadCriteria(RecruitmentInterviewAppraisalEdit.java:66)

Here is my code:


@Override
    protected void initNewItem(RecruitmentInterviewAppraisal item) {
        Date date = new Date();
        item.setInterviewDate(date);

        loadCriteria(item);

    }


    private void loadCriteria(RecruitmentInterviewAppraisal item){
        recruitmentInterviewEvaluationCriteriasDs.refresh();
        showNotification("size " + recruitmentInterviewEvaluationCriteriasDs.size(), NotificationType.HUMANIZED);

        for (RecruitmentInterviewEvaluationCriteria criteria : recruitmentInterviewEvaluationCriteriasDs.getItems()){

            if(criteria.getName() !=null){
                RecruitmentInterviewAppraisalDetail detail = metadata.create(RecruitmentInterviewAppraisalDetail.class);
                detail.setRecruitmentInterviewEvaluationCriteria(criteria);
                detail.setRecruitmentInterviewAppraisal(item);
                recruitmentInterviewAppraisalDetailDs.addItem(detail);

            }
        }

        recruitmentInterviewAppraisalDetailDs.refresh();
        recruitmentInterviewAppraisalDetailTable.repaint();
    }

Line 66 is this:


recruitmentInterviewAppraisalDetailDs.addItem(detail);

initNewItem() is invoked before editor datasources are initialized, so you shouldn’t work with them here. Try to move your login to postInit().

Thank you.