[infinispan-issues] [JBoss JIRA] Commented: (ISPN-1065) Use a better mechanism to parse config files

[Dan Berindei (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-1065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12615369#comment-12615369 ] 

Dan Berindei commented on ISPN-1065:
------------------------------------

If this was only about the XSD, you could design the Infinispan configuration so that different modules could add their own configuration: http://www.datypic.com/books/defxmlschema/chapter21.html

Seems like there's even a way to parse it with JAXB: http://stackoverflow.com/questions/420533/how-do-i-ensure-schema-extensibility-using-jaxb

The user will have to add the query module namespace declaration, and they won't have proper validation for the top query configuration element, but they will have validation inside it.


> Use a better mechanism to parse config files
> --------------------------------------------
>
>                 Key: ISPN-1065
>                 URL: https://issues.jboss.org/browse/ISPN-1065
>             Project: Infinispan
>          Issue Type: Enhancement
>          Components: Configuration
>    Affects Versions: 4.2.1.FINAL
>            Reporter: Manik Surtani
>            Assignee: Pete Muir
>            Priority: Blocker
>              Labels: jaxb
>             Fix For: 5.1.0.ALPHA1, 5.1.0.FINAL
>
>
> The current codebase heavily relies on JAXB to:
> 1.  Generate a XSD schema from a Configuration bean
> 2.  Generate a parser to use with an XML configuration
> This is known to be slow, and can significantly add to start up time:
> {quote}
> We did some analysis of our AS6 descriptor code which was using JAXB (800ms), compared to straight stax (10ms) 
> {quote}
> A possible solution could be to still use JAXB to generate the schema, but to also write a Maven plugin which would generate a STAX parser based on the XSD schema and Configuration bean at build time.  Infinispan would then use this STAX parser rather than a JAXB generated parser, which would be a lot faster.

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