RE: What is the difference between SOAP and JAX-RPC

[Anne Thomas Manes]

Title: What is the difference between SOAP and JAX-RPC

SAAJ is the core SOAP API. Both JAXM and JAX-RPC use SAAJ. SAAJ was originally part of JAXM, but they split it out when JAX-RPC came out so that JAX-RPC wouldn't have a dependency on JAXM.

 

SAAJ supports any type of SOAP messaging. It is a low-level API that provides access to a SOAP envelope.

Axis uses SAAJ. Any JAX-RPC-compliant system must use SAAJ.

 

JAXM supports one-way asynchronous messaging. It uses SAAJ to construct the SOAP envelope according to a profile, which is essentially a template of your SOAP message. For example, when using an ebXML Message Service (ebMS) JAXM provider, JAXM will construct a SOAP message template that conforms to the ebMS specification, with all the right headers in place, and a manifest in the SOAP body. The application is then responsible for adding the XML payload to the SOAP message template.

 

Anne

-----Original Message-----
From: Volkmann, Mark [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 26, 2003 9:34 AM
To: '[EMAIL PROTECTED]'
Subject: RE: What is the difference between SOAP and JAX-RPC

I don't think the distinction between JAXM and SAAJ given below is exactly correct.  The documentation that ships with the JWSDP (in jaxm-1.1.1\docs\index.html) says this.

 

SOAP with Attachments API for Java^TM (SAAJ) 1.1
This specification covers the javax.xml.soap package, which provides the API for creating and sending SOAP messages.

 

Java^TM API for XML Messaging (JAXM) 1.1
This specification covers the javax.xml.messaging package, which provides the API for using a messaging provider to send messages.

 

Elsewhere I've seen the distinction described by saying that SAAJ supports point-to-point SOAP messaging while JAXM supports SOAP messaging using a provider.  I'd imagine that most implementations of JAXM would be built on top of an implementation of SAAJ.  What do I know though?  I also thought the logical way to build an implementation of JAX-RPC would be to build it on top of an SAAJ implementation and I'm not aware of any Java-based web service toolkit that has done that.

 

-----Original Message-----
From: Anne Thomas Manes [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 25, 2003 6:55 PM
To: [EMAIL PROTECTED]
Subject: RE: What is the difference between SOAP and JAX-RPC

- JAXM: an XML-oriented API that does not support WSDL and assumes that the application constructs the XML message.

- SAAJ: a low-level API that lets the application work directly with the SOAP message structure.



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