Comments on: Speed up XML programming with JAXB

By: jeff kish

jeff kish — Sun, 03 Apr 2011 00:04:26 +0000

Hi.
Can anyone point to instructions or an overview on how to debug whether or not the annotations are generating correctly? I happen to be using someones JAXB program to generate java classes, however one of the getter methods is returning NULL when it should not, and I was told it was probably an improper annotation related issue.
I’m just coming up to speed, and being old, still have DTD’s in my brain.

thanks
Jeff

By: 10 practical recommendations for designing and building highly reusable XML Schemas | Summa Blog

Tue, 10 Nov 2009 13:55:03 +0000

[...] Even if you are an XML schema expert, an XML Schema editor can help you become more productive. From my experience, a good tool must meet three basic requirements. First, it must provide auto-complete capabilities and allow you to validate the schema. The second requirement is that it should let you generate sample XML files with various options, such as for populating optional nested elements up to N levels. Finally, it must let you validate an XML file against a set of schemas. This last functionality is essential during integration testing for validating files generated by applications that are not relying on an XML binding framework. [...]

By: Jorge Balderas

Jorge Balderas — Tue, 30 Jun 2009 15:13:25 +0000

Das - I’ve never done that particular customization. My recommendation is to check out class and property bindings. You may be able to accomplish this by overriding the binding to use your own “first name” property (get/set implementation)… hope this helps!

By: das

das — Sun, 28 Jun 2009 18:49:42 +0000

I want to create a custom getter method. I will explain.
If the generated default getter method for String firstName is

public String getFirstName(){
return this.firstName;
}

I want something like

public String getFirstName(){
if(this.firstName==null){
return new String(”xyz”);
}
}

In case of custom objects, I need something like

public MyObject getMyObject(){
if(this.myObject==null){
return new MyObject);
}
}

How can I do this using JAXB when I generate the beans from XSD.
Please help.

-Das

By: Jorge Balderas

Jorge Balderas — Tue, 03 Mar 2009 02:25:33 +0000

Thanks for adding the reference to XStream, Handerson. It is an interesting and practical approach. I specially liked the annotations capability from XStream. It is good to know about it.

I should mention that JAXB allows generating an XML Schema from Java classes using the schemagen plugin. Not quite as practical as XStream, but can be useful in some cases.

By: Handerson Gomes

Handerson Gomes — Mon, 02 Mar 2009 22:07:01 +0000

I would like to add a reference to XStream (http://xstream.codehaus.org/) which is a plain library to serialize objects to XML and back again.

It has some customizations options and is very simple to use. It can work well in some scenarios, for example, when the need is to create an XML version of a Java Object, instead of writing Java code to handle a pre-defined XML format.

We have used XStream in a project to communicate with Flex using HTTP Services and it worked quite well.