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From geronimo-...@incubator.apache.org
Subject [Apache Geronimo Wiki] New: EWSGeronimoIntegeration
Date Sat, 26 Jun 2004 17:05:47 GMT
   Date: 2004-06-26T10:05:47
   Editor: 203.94.92.227 <>
   Wiki: Apache Geronimo Wiki
   Page: EWSGeronimoIntegeration
   URL: http://wiki.apache.org/geronimo/EWSGeronimoIntegeration

   no comment

New Page:

== Geronimo – JSR-109 Service Impl Integration ==
Here I am trying to extend the Proposal by Luis and Jeremy Geronimov Axis Integration.

The geronimo – JSR-109 Service Impl integration basically consists in the definition of a
deployment architecture that defines the way how web services are implemented in Geronimo
server and a set of interfaces that will be used by classes responsible for the ws's deployment.

http://cvs.apache.org/viewcvs.cgi/*checkout*/ws-axis/contrib/ews/docs/images/ews-GerInt.gif

== How a web service request is served ==
A servlet listener that will wait for soap calls. This servlet provide by Axis will act as
a JAX-RPC handler and will be in charge to dispatch request either to POJOs or EJBs. 
The Axis webapp will be deployed at startup. Or if It's possible as soon as JAX-RPC handler
is need. 
There will be only one web-app where will reside the listeners and impl for the web ws, and
the proxys to call the ejb service impl. 

== Deployment ==
 1. We will extend existing module in charge of WAR and EJB-JAR deployment, to take into consideration
specific ws deployment files. 

 2. The Geronimo deployer will call the EWS tool and it will generate the implementation classes
+ DD looking at the web service module. The EWS will take care of the parsing of the JSR109
specific DD (webservice.xml file and jaxrpc mapping file.) For avoid the web.xml and ejb-jar.xml
are parsed twice EWS hope to use Geronimo DD mechanism (to my understating that can done via
GBeans.) But right now EWS use DOM to parse them. 

 3. The implementation classes will contains a web service. To deploy the webservice in the
Axis 3 things should be done. 

  3.1. the classes in the webservice should be loaded to the WebContiner the web service can
be deployed in Geronimo using the Axis AdminClient 

  3.2. The web service Client side stubs should be generated and the service interface (XXLocator)
should be bind under the JNDI context. (if service mappings defined) The WSDL file of the
Web service should be published in the JAXR registry 

  3.3. If the implementation bean is based on EJB the EWS will generate an EJB that used the
Session Bean. The Geronimo EJB-Jar deployment support will be used to deploy the generated
EJB. The EJB should be Bind under the JNDI name as given in the Open EJB DD generated by the
EWS. 

  4. If we deployed the Axis webapp the first time a JAX-RPC handler is need, we will trigger
an event that will do it 

== Concerns ==
 1. We have to be sure that the service has started after the web container, because our service
depends on it. How do we manage dependencies?? 

 2. Is it possible to have more than one listener (JAX-RPC handler) 

 3. How the “extend existing module in charge of WAR and EJB-JAR deployment” is done and
we should decide how the EWS called from the module. I think to read and Loading the web service
module, Class loading and parsing (created DDBeans and pass them in if that works or should
I create the DDBeans myself.) the ejb-jar.xml and web.xml file EWS can use Geronimo services.


 4. To get the Geronimo Internal based implementation working. I think it is theoretically
resolved but got to get it working. 




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