package xuml.tools.diagram;
   
   import xuml.tools.datastore.DatastoreText;
   
   public class ModelPersistence {
   
       private static final String KEY_KIND = "diagram";
       private static ModelPersistencedelPersistence">ModelPersistence instance = new ModelPersistence();
   
      public static ModelPersistence instance() {
          return instance;
      }
  
      public String getXml(String id) {
          String entity = id + "-model";
          String property = "model";
          // TODO change to DatastoreText.instance()
          DatastoreText ds = Context.instance().getDatastore();
          String result = ds.get(KEY_KIND, entity, property);
          return result;
      }
  
      public void save(String id, String xml) {
          String entity = id + "-model";
          String property = "model";
          // TODO change to DatastoreText.instance()
          DatastoreText ds = Context.instance().getDatastore();
          ds.put(KEY_KIND, entity, property, xml);
      }
  }