Question

I am requesting links to sources/material that will help me with the following problem (a problem because I am novice to Java/JAXB and coming from a PHP background).

I am supplied with a complex XSD that is created & maintained by an organization. I created the java object model using JAXB 2.1. I need to map database fields to the java/jaxb derived classes. The database fields/elements are rendered via simple XML output. Example of the XML database record output is as follows:

<PROBLEM>
<PID>262</ID>
<PROBLEM_DATE>14-DEC-10</PROBLEM_DATE>
<PROBLEM_TYPE>T</PROBLEM_TYPE>
<PROBLEM_CODE>244.9</PROBLEM_CODE>
</PROBLEM>

Example of of the JAXB derived class:

protected IvlTs problemDate;

public IvlTs getProblemDate() {
            return problemDate;
        }

public void setProblemDate(IvlTs value) {
            this.problemDate = value;
        }

How would I map the xml element <PROBLEM_DATE> to problemDate? Please advise of an article/tutorial that can help me get started. Also, the XML database extract is large, having nearly 500 fields/xml elements, is there a way to automate the mapping or must this all be done by hand?

Answer 1

You’ll want to read up on JAXB annotations. For this particular problem, you want to annotate the getProblemDate() method with

@XmlElement(name="PROBLEM_DATE")

If there’s a common pattern, like problemDate -> PROBLEM_DATE and in general fooBar -> FOO_BAR, then it should be pretty easy to write a regex find/replace to get what you need.