All about Danilo Dadonas

E-commerce with FLEX. Good Idea?

I developed some webapps with flex/blazeDS. It was a good experience. But I think it's not (maybe yet) a good idea to develop wesites.
OK, Paul. My choice is HTML/AJAX.

Thanks a lot.

11 years ago

Flex

E-commerce with FLEX. Good Idea?

Right, Paul. But what languages/frameworks would you use to develop the client side? HTML/CSS, JQuery, Servlets/JSP, Wicket, Tiles, Velocity? What kind of technologies websites like amazon.com has been used? The server side is easy to me because I've worked with java for years. And maybe it's the problem. I'm a java programmer and I have dificult do make a rich client side. That's why I'm trying to use a good RIA.

11 years ago

Flex

E-commerce with FLEX. Good Idea?

Hi. I'm gonna develop an e-commerce but I'm having problem deciding what kind of technology to use. I'd like to use flex + Java, but I never saw an e-commerce built and working over flex. What do you think?

Thanks.

11 years ago

Flex

Help needed in login page

My advice is to begin from here: Head First Servlets and JSP

11 years ago

JSP

Problem with Hibernate Query

I never declered a parameter using "?". Try to use something like this: ":parameter_1".

Example:

12 years ago

Object Relational Mapping

Eclipse or Netbeans using Swing?

Hi,

What is the best IDE to develop Swing based applications?
And what is the most commom plug-in?

Thanks.

12 years ago

Swing / AWT / SWT

get a bean to populate itself

Hi David. In this case you're trying to clone a bean. You can implement the Cloneable interface, like this:

...and now you can do this:

Dadonas

12 years ago

Beginning Java

Data validation - Best practice - at what level

If you just put validate in the view it should not solve the problem. If you have a select with options listed from the server, you can hack it adding values using some free tools. In this case the user can put wrong values if the business tiers isn't validating the data. I've used AJAX to validate some simple features like if the value is a string, number, the length, etc. After the submit, the data is filtered by the business tier where the simple features are validated again + the business rules. I this case I'm using Hibernate Validator. After the business validation, the object is submited to the Data Access Tier where it is ready to be persisted. Pretend you are registering a customer; the class model should be:

customer.jsp > customer_validator.js > CustomerAction > CustomerBO > CustomerDAO > Repository

bye.

[ December 01, 2008: Message edited by: Danilo Dadonas ]
[ December 02, 2008: Message edited by: Danilo Dadonas ]

13 years ago

OO, Patterns, UML and Refactoring

Log tables

This is a pretty standard practice.

Thank you Stevi. It's just what I had to know.

14 years ago

Oracle/OAS

Log tables

Hi, all. I'm working to an Company which is using Oracle as database. Each table has another table named log. For example:

EMPLOYEE -> EMPLOYEE_LOG
CUSTOMER -> CUSTOMER_LOG

For each table, there is a trigger wich inserts a row in the log table when user updates or deletes a row in the table.
They have it to know in the future what user did perform the action of update or delete.

Is it a best practice? The is another way to do this?

Thanks.

14 years ago

Oracle/OAS

developing my first struts application. So need some help

What container are you using? Tomcat, JBoss, ...?

14 years ago

Struts

developing my first struts application. So need some help

It helped me a lot:

Planet Struts

14 years ago