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abstract.js

AbstractResourceProvider class.

 
             		           
                               
                            
                                
               
This class itention is to be a resource provider.
It is aware of the resource used. It knows how to
provide a resrouce from the storage.
             		                            
             		           
                               
                            
                                
               
Acts as a DAO layer used to provide a data.
             		                            
             		           
                               
                            
                                
               
General purpose of this class is to be overriden which enables
the clients to easely hook in their own DAO implementation.
             		                            
             		           
                               
                            
                                
               
It abstracts the concrete database related intactions and
forces the clients to encapsulate them within the subclasses.
             		                            
             		           
                               
                            
                                
               
@author Uroš Lates
             		                            
var AbstractResourceProvider = {

  find: function() {
    throw new Error('Method not implemented!');
  }

  , findOne: function(options, callback) {
    throw new Error('Method not implemented!');
  }

  , save: function() {
    throw new Error('Method not implemented!');
  }

  , update: function() {
    throw new Error('Method not implemented!');
  }
             		           
                               
                            
                                
               
Delegates call to save or update method depending on the .
Expects that first argument is the resource id (cause id can belong to
properties that are inconsistently named among different databases e.g. _id/id...)
remaining arguments should correspond to the save/update method signatures!
             		                            
  , saveOrUpdate: function(resource_id) {
    if (!resource_id) {
      save.apply(this, arguments);
    } else {
      update.apply(this, arguments);
    }
  }

  , delete: function() {
    throw new Error('Method not implemented!');
  }

};

exports.AbstractResourceProvider = AbstractResourceProvider;