Consider the follwing source and target structures,
Source
<src>
<Person> 0 to UB
<Gender>1</Gender> 1..1
<Surname>Miller</Surname > 1..1
</Person>
</src>
Target
<tgt>
<Passenger> 1 ..1
<Title>Mr.</Title> 0 to UB
<titlecnt> </titlecnt> 1
<Name>Miller</Name> 0 to UB
<namecnt> </namecnt> 1
</Passenger>
</tgt>
If Gender=1, then title=Mr.
If gender=2 , title =Miss,
NameCnt and Titlecnt are count of the number of Name and Title occuring in the source.
This is one simple mapping scenario. this can be implemented using Graphical Mapping by writing a user defined function, and can also be implemented using a JAVA mapping. I would suggest you try both techniques.
Hope this simple scenario will help you understand the mapping techniques in JAVA.
For graphical mapping, one important concept that is to be understood is the Context Change and how to use the same.
COnsider these simple scenarios,
1. In this case, DOB is withing otherdetails, but in my target i need it to come under details. this can be done using Remover Contexts. refer to link,
2. In this case, in the src, multiple details can occur and multiple names can occur in a single detail.but, in the destination, for every occurence of name in the source I want a detail tag to be generated. This can be done using COLLAPSE CONTEXTS. refer to this link for the same,
Mapping is basically done to convert one form of xml into another form. This can be done using either of them mentioned below.
- Graphical mapping
- XSLT mapping
- JAVA mapping
- ABAP mapping
To know more about each of them please go thru the following links. And if you ask me your which is better, it depends basically on the scenario you implementing and the complexity involved. Anyways please go thru the following links:
most of the links that I have provided also helps you get the step by step procedure of doing the same. And also involves the procedure to implement certain advanced features.
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