DTO « dao « Java Database Q&A

  1. Java Database Q&A
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1. DTO, DAO, and DCO. What is a DCO?    stackoverflow.com

My search for the meaning of DCO was quite fruitless, so I decided to ask here. In my Java application, there are many classes like EmployeeDetailsDto, EmployeeDetailsDao, but recently I also ...

2. Separation of concerns - DAO, DTO, and BO    stackoverflow.com

So I have a DAO, DTO, and BO. The following code is the result: 

// Instantiate a new user repository.
UserRepository rep = new UserRepository();

// Retrieve user by ID (returns DTO) and ...

3. instanceof vs isAnX()    stackoverflow.com

In java i am writing some DTO objects, which all inherit from AllocationDTO.
A list of these objects are then passed into a DAO object for saving to the database. Depending on which ...

4. Using DAO pattern    stackoverflow.com

I am trying to use the DAO pattern in my multiple web app projects. I have three different web applications and they share two different databases. Each databases have number of ...

5. caching a database into an array which refreshes every 5 minutes    stackoverflow.com

I need to cache a database into an array using Java, what is the best way to do this? I need this array to refresh every 5 minutes and I need to ...

6. DTO & DAO    coderanch.com

A DTO is basically an object to bundle other objects together in order to transport them. E.g. A client needs to get a customer object and a shopping trolley object for that customer. In stead of making two calls to the server, one for the customer and one for the trolley, the client makes one call. These two objects are put ...

7. dao and dto    forums.oracle.com

8. dao, dto need explanation    forums.oracle.com

9. Resource Explaining BD, BO, DAO, DTO, etc.    forums.oracle.com

bikingfool wrote: I'm new to Java and we're using JSF, Managed Beans, Backing Beans, BDs, EJBs, BOs, DBs, DAOs, DTOs. Does anyone know a good resource (book or online) that gives definitions of these and how they relate to each other. I can't find anything basic about them. Sounds like you are working with alphabet soup! A few of them are ...





10. DAO and DTO    forums.oracle.com

well Martin Fowlwer does propose IdentityMap pattern in such a case where he says that thes objects should be stored in a Map with the primary key being the key for the map. So next time you need an object you check with the map if it exists or not and if it doesnot you try to grab it again. But ...

11. Question about relationship between view layer and DAO and DTOs.    forums.oracle.com

Can I have some help in coming up with a clean way to model my domain? I have a DAO to retrieve data from the database to create a widget object. public com.acme.model.dao public void WidgetDAO{ public void save(WidgetDTO widget){} public WidgetDTO find(...){} public void delete(WidgetDTO widget){} } Next, I use the following DTO to transer the widget to the view ...