[Jboss-dev-forums] [Design of JBoss's Web Services Implementation] - Schema Model XSModel based on the Xerces Schema API

[<ani...@jb...>]

At JBoss, we made the decision to use the Xerces Schema API to represent our Schema Model.  An issue we found was that the schema model is more of a flat/read-only model, which when built has no hierarchical information and has lost track of custom prefixes etc.

So approach by JBoss:

1) Parse a schema file into a XSModel.
- Use Xerces Implementation of the XSModel.

2) Construct manually a Schema Model with the hope of adding types/ elements/attributes etc.
- Use JBossXSModel.

Now anytime, you built a Schema Model by parsing from a file, you are stuck. You get the Xerces Impl of XSModel which is read only.

Do not despair. There is a utility class called WSSchemaUtils that has a method called getJBossXSModel as follows:


  |    public JBossXSModel getJBossXSModel(XSModel)
  | 

You can use this utility method to obtain a JBossXSModel from any implementation of XSModel.

This inconvenience is regretted. But I could not help the read only nature of Xerces impl of XSModel.  In fact, the Xerces Schema API by itself is a flat read only model.

Another interesting thing about JBossXSModel, is that it can serialize itself into a String. This String can be written to a file or a Stream, after serialization.

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