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  • Hibernate OrderColumn with Spring Roo merge()

    I am using Hibernate's @OrderColumn annotation to order a list in my database. It correctly generates the column in the database table to store index and also stores the correct index initially.

    But when I try to change the ordering in the list and then use Spring Roo's merge() method to update the database, the ordering doesn't change.

    Here is the code for my entity:

    Code:
    @RooJavaBean
    @RooToString
    @RooEntity
    public class Story {
    
        @ManyToMany(cascade = CascadeType.ALL)
        @OrderColumn
        private List<Slide> slides = new ArrayList<Slide>();
    
        @ManyToOne
        private Question question;
    
        private String title;
    
    }
    Here is the update method which calls merge function:

    Code:
    @RequestMapping(method = RequestMethod.PUT)
    public String StoryController.update(@Valid Story story, BindingResult bindingResult, Model uiModel, HttpServletRequest httpServletRequest) {
        if (bindingResult.hasErrors()) {
            uiModel.addAttribute("story", story);
            return "storys/update";
        }
        uiModel.asMap().clear();
        story.merge();
        return "redirect:/storys/" + encodeUrlPathSegment(story.getId().toString(), httpServletRequest);
    }
    I have checked using debugging that the story object has the updated indices in the slides list.
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