1 Reply Latest reply on Nov 12, 2007 11:18 AM by Pete Muir

    org.hibernate.HibernateException: identifier of an instance

    Chris Malan Novice

      This is the set-up: a document belongs to a category. Category is a class with an ID (Integer - auto generated), a name and a description. One category can have many documents.

      A data table of documents is displayed. The category is in a selectOne and the name is displayed. This is what it looks like in the view:

      <h:selectOneMenu id="category" value="#{document.category.categoryID}" required="true">
       <f:selectItems value="#{categorySessionBean.categoryList}" />

      This is what an f:selecItem looks like:
      categoryList = new SelectItem[categories.size()];
      int i=0;
      for(Category cat:categories){
       categoryList(i)=new SelectItem(cat.getCategoryID(), cat.getName());

      The () after categoryList should be square brackets. It is seen as formatting and ignored.

      I've tried s:selectItems and it doesn't work for me. I get and "invalid value" when trying to do an update with it. Maybe the place holders have something to do with it.

      How can I use a selectOne to change the category of a document? The display is right, the xhtml code is right, just it does not work.

      Any help will be greatly appreciated.