Program: 115226
Project: 115226
Buggy source:
protected Element invokeInternal(Element requestElement,Document document) throws Exception {
  System.out.println("String_Node_Str");
  NodeList subjects=requestElement.getElementsByTagNameNS(CONNECTOR_NAMESPACE_V1,"String_Node_Str");
  SubjectBean finalSubjectBean=new SubjectBean();
  finalSubjectBean.setLabel("String_Node_Str");
  try {
    if (subjects.getLength() > 0) {
      System.out.println("String_Node_Str" + subjects.getLength());
      for (int i=0; i < subjects.getLength(); i++) {
        Node childNode=subjects.item(i);
        UserAccountBean user=this.getUserAccount();
        Role r=user.getActiveStudyRole();
        if (!this.canUserRegisterSubject(user)) {
          throw new CCSystemFaultException("String_Node_Str");
        }
        RegisterSubjectBean subjectBean=subjectService.generateSubjectBean(user,childNode,getStudyDao(),getStudyParamValueDao());
        NodeList performedMilestones=requestElement.getElementsByTagNameNS(CONNECTOR_NAMESPACE_V1,"String_Node_Str");
        if (performedMilestones.getLength() > 0) {
          for (int j=0; j < performedMilestones.getLength(); j++) {
            Node milestone=performedMilestones.item(j);
            subjectBean=subjectService.attachStudyIdentifiers(subjectBean,milestone);
          }
        }
        finalSubjectBean=subjectService.generateSubjectBean(subjectBean);
        SubjectBean checkSubjectBean=getSubjectDao().findByUniqueIdentifier(finalSubjectBean.getUniqueIdentifier());
        if (checkSubjectBean.getId() <= 0) {
          throw new CCBusinessFaultException("String_Node_Str" + "String_Node_Str");
        }
        StudySubjectBean studySubjectBean=subjectService.generateStudySubjectBean(subjectBean,finalSubjectBean,subjectBean.getStudyBean());
        StudySubjectBean checkStudySubjectBean=getStudySubjectDao().findByLabelAndStudy(studySubjectBean.getLabel(),subjectBean.getStudyBean());
        if (checkStudySubjectBean.getId() <= 0) {
          throw new CCBusinessFaultException("String_Node_Str" + "String_Node_Str");
        }
        checkStudySubjectBean.setStatus(Status.DELETED);
        checkStudySubjectBean.setUpdater(this.getUserAccount());
        checkSubjectBean.setStatus(Status.DELETED);
        checkSubjectBean.setUpdater(this.getUserAccount());
        checkStudySubjectBean=(StudySubjectBean)getStudySubjectDao().update(checkStudySubjectBean);
        checkSubjectBean=(SubjectBean)getSubjectDao().update(checkSubjectBean);
        System.out.println("String_Node_Str");
      }
    }
    return this.mapRegisterSubjectConfirmation(finalSubjectBean.getLabel());
  }
 catch (  Exception npe) {
    if (npe.getClass().getName().startsWith("String_Node_Str")) {
      npe.printStackTrace();
      System.out.println("String_Node_Str" + npe.getClass().getName());
      OpenClinicaException ope=(OpenClinicaException)npe;
      return mapSubjectErrorConfirmation("String_Node_Str",ope);
    }
 else {
      npe.printStackTrace();
      System.out.println("String_Node_Str" + npe.getClass().getName());
      return mapSubjectErrorConfirmation(npe.getMessage());
    }
  }
}

Fixed version (ground truth):
protected Element invokeInternal(Element requestElement,Document document) throws Exception {
  System.out.println("String_Node_Str");
  NodeList subjects=requestElement.getElementsByTagNameNS(CONNECTOR_NAMESPACE_V1,"String_Node_Str");
  SubjectBean finalSubjectBean=new SubjectBean();
  finalSubjectBean.setLabel("String_Node_Str");
  try {
    if (subjects.getLength() > 0) {
      System.out.println("String_Node_Str" + subjects.getLength());
      for (int i=0; i < subjects.getLength(); i++) {
        Node childNode=subjects.item(i);
        UserAccountBean user=this.getUserAccount();
        Role r=user.getActiveStudyRole();
        if (!this.canUserRegisterSubject(user)) {
          throw new CCSystemFaultException("String_Node_Str");
        }
        RegisterSubjectBean subjectBean=subjectService.generateSubjectBean(user,childNode,getStudyDao(),getStudyParamValueDao());
        NodeList performedMilestones=requestElement.getElementsByTagNameNS(CONNECTOR_NAMESPACE_V1,"String_Node_Str");
        if (performedMilestones.getLength() > 0) {
          for (int j=0; j < performedMilestones.getLength(); j++) {
            Node milestone=performedMilestones.item(j);
            subjectBean=subjectService.attachStudyIdentifiers(subjectBean,milestone);
          }
        }
        finalSubjectBean=subjectService.generateSubjectBean(subjectBean);
        SubjectBean checkSubjectBean=getSubjectDao().findByUniqueIdentifier(finalSubjectBean.getUniqueIdentifier());
        if (checkSubjectBean.getId() <= 0) {
          throw new CCBusinessFaultException("String_Node_Str" + "String_Node_Str");
        }
        StudySubjectBean studySubjectBean=subjectService.generateStudySubjectBean(subjectBean,finalSubjectBean,subjectBean.getStudyBean());
        StudySubjectBean checkStudySubjectBean=getStudySubjectDao().findByLabelAndStudy(studySubjectBean.getLabel(),subjectBean.getStudyBean());
        if (checkStudySubjectBean.getId() <= 0) {
          throw new CCBusinessFaultException("String_Node_Str" + "String_Node_Str");
        }
        checkStudySubjectBean.setStatus(Status.DELETED);
        checkStudySubjectBean.setUpdater(this.getUserAccount());
        checkSubjectBean.setStatus(Status.DELETED);
        checkSubjectBean.setUpdater(this.getUserAccount());
        checkStudySubjectBean=(StudySubjectBean)getStudySubjectDao().update(checkStudySubjectBean);
        checkSubjectBean=(SubjectBean)getSubjectDao().update(checkSubjectBean);
        checkSubjectBean=subjectService.changeStatus(Status.AVAILABLE,Status.AUTO_DELETED,checkSubjectBean,user,getSubjectDao(),getStudySubjectDao(),getEventCrfDao(),getItemDataDao(),getStudyEventDao());
        System.out.println("String_Node_Str");
      }
    }
    return this.mapRegisterSubjectConfirmation(finalSubjectBean.getLabel());
  }
 catch (  Exception npe) {
    if (npe.getClass().getName().startsWith("String_Node_Str")) {
      npe.printStackTrace();
      System.out.println("String_Node_Str" + npe.getClass().getName());
      OpenClinicaException ope=(OpenClinicaException)npe;
      return mapSubjectErrorConfirmation("String_Node_Str",ope);
    }
 else {
      npe.printStackTrace();
      System.out.println("String_Node_Str" + npe.getClass().getName());
      return mapSubjectErrorConfirmation(npe.getMessage());
    }
  }
}