[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: XML configuration

[jmesnil]

i've committed XML schema for all our configuration files.

Validation occurs in XmlDeployer subclasses.

Some tidbits about the XML schema:

== order matters ==

I've not found how to provide a "bag" of elements with a XML schema. Elements must now be ordered for the configuration to be valid

== ID/IDREF ==

I took advantage of ID & IDREF in the schema to validate our conf. E.g. if the backup-connector-ref element references a "blah" connector, there MUST be a connector element with the "blah" attribute. I did not change the code but we can now remove some validation done in Java and now handled by XSD.
However this does not apply to cross-configuration files (e.g. jbm-jms.xml connection-factory can not IDREF an element from jbm-configuration.xml).
This still must be done in Java

== Minimal configuration ==

The minimal valid configuration file is


  | <deployment>
  |    <configuration>
  |      <acceptor>...</acceptor>
  |    </configuration>
  | </deployment>
  | 

there MUST be at least 1 declared acceptor. All other elements are optional.

== Default values ==

The XML schemas DOES NOT define any default values. The defaults are taken from Configuration interface if the corresponding XML element is not present in the configuration

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