import org.springframework.data.rest.core.annotation.HandleBeforeSave; //导入依赖的package包/类
/**
 * Do checks with the related publication before delete or save operations.
 * 
 * @param relatedPublication the updated or deleted related 
 *     publication before the delete or save process 
 */
@HandleBeforeCreate
@HandleBeforeSave
public void onRelatedPublicationBeforeSavedOrCreated(RelatedPublication relatedPublication) {
  RelatedPublication oldPublication = this.relatedPublicationRepository
      .findOne(relatedPublication.getId());
  
  if (oldPublication != null) {      
    List<String> deletedStudyIds = new ArrayList<>(oldPublication.getStudyIds());
    deletedStudyIds.removeAll(relatedPublication.getStudyIds());
    enqueueStudiesIfProjectIsReleased(deletedStudyIds);
    
    List<String> addedStudyIds = new ArrayList<>(relatedPublication.getStudyIds());
    addedStudyIds.removeAll(oldPublication.getStudyIds());
    enqueueStudiesIfProjectIsReleased(addedStudyIds);
    
    if (!oldPublication.getSourceReference().equals(relatedPublication.getSourceReference())) {
      enqueueStudiesIfProjectIsReleased(relatedPublication.getStudyIds());
    }
  } else {
    enqueueStudiesIfProjectIsReleased(relatedPublication.getStudyIds());
  }
}
 

import org.springframework.data.rest.core.annotation.HandleBeforeSave; //导入依赖的package包/类
/**
 * make sure the submission is ready for storing
 * * give it an ID if it has not got one
 * * check it can be modified if there it already exists
 *
 * @param submission
 */
@HandleBeforeSave
public void handleBeforeSave(Submission submission) {

    Submission storedSubmission = submissionRepository.findOne(submission.getId());
    submission.setSubmissionStatus(storedSubmission.getSubmissionStatus());

    submissionEventService.submissionUpdated(submission);
}
 

import org.springframework.data.rest.core.annotation.HandleBeforeSave; //导入依赖的package包/类
@HandleBeforeSave
public void handleBeforeSave(Moto moto) {
    System.out.println("before-save: " + moto.toString());
}
 

import org.springframework.data.rest.core.annotation.HandleBeforeSave; //导入依赖的package包/类
@HandleBeforeCreate
@HandleBeforeSave
public void beforeSave(User user) {
    user.setPassword(passwordEncoder.encode(user.getPassword()));
    user.setRoles(Arrays.asList("ROLE_USER"));
}
 

import org.springframework.data.rest.core.annotation.HandleBeforeSave; //导入依赖的package包/类
@HandleBeforeSave
@PreAuthorize("hasRole('ROLE_ADMIN')")
public void checkUpdateAuthority(Category category) {
	log.debug("Updating category {}", category);
}
 

import org.springframework.data.rest.core.annotation.HandleBeforeSave; //导入依赖的package包/类
@HandleBeforeSave
@PreAuthorize("hasRole('ROLE_ADMIN')")
public void checkUpdateAuthority(Article article) {
	log.debug("Updating article {}", article);
}
 

import org.springframework.data.rest.core.annotation.HandleBeforeSave; //导入依赖的package包/类
@HandleBeforeSave
@PreAuthorize("hasRole('ROLE_ADMIN')")
public void checkUpdateAuthority(Employee employee) {
    //only authority check
}