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From Aleksander Slominski <>
Subject modularity and supporting SAAJ/JAX-RPC [Re: REQ: modular, small footprint, client side only SOAP Java impl? [Re: Apache.WebServices.Next?]]
Date Sat, 01 Nov 2003 20:29:45 GMT
Ganga Sah wrote:

>It will be nice if your implementation can support
>SAAJ/JAX-RPC interface(eg. javax.xml.rpc.Service/Call)
>to write portable SOAP client code.
this /support/ dimension is greatly complicated by requirements that SUN 
puts to get JSR TCK compliance. it seems that only big organizations 
(and limited subset of Apache developers) can get hands on them and to 
be able to fulfill requirements to claim SAAJ or JAX-RPC support - do i 
miss something?

anyway i think that strong and simple to use XML message support 
(including SOAP doc/literal support) is way more important regardless of 
API as what matters is what goes on the wire ...



>--- Aleksander Slominski <> wrote:
>>replying to Dims' "Apache.WebServices.Next" post i
>>would like to look on 
>>more fundamental question concerning Apache WS
>>modularity: i am 
>>interested to find out if there is any interest in
>>very modular, low 
>>footprint, Java SOAP implementation that is based
>>around XML Infoset 
>>object model with XPath support.
>>in AXIS requirements
>>there is identified need for "*A single SUPER TINY
>>.jar file must be 
>>enough for a client to communicate via SOAP*" but
>>based on my recent 
>>(and limited!) experience with extracting
>>functionality from AXIS this 
>>is very very difficult to do due to monolithic
>>source tree (i do not 
>>mind to be proven wrong!).
>>i also think that on client side what is really
>>required is just HTTP 
>>and doc/literal support, in other words to allow
>>direct manipulation of 
>>XML, and there is no real need for sophisticated 
>>serialization/deserialization infrastructure.
>>i am very interested to learn about open source Java
>>implementations that are in such space (modular,
>>small footprint, client 
>>side only SOAP Java).
>>as proof of concept i have built Web XML Services
>>Utility Library that 
>>currently has following modules:
>>* common (no dependencies except for XML pull
>>parsing API - currently 
>>uses XPP3/XB1 for XML Infoset API)
>>* http_client (depends on common)
>>- provides basic HTTP 1.x client side support with
>>simple HTTP 
>>connection manager
>>* http_server (depends on common)
>>- provide basic HTTP 1.x server side support with
>>Servlet-like API
>>* invoker (depends on http_client)
>>- allows simple invocation of service by sending XML
>>on top of HTTP
>>* processor (depends on http_server)
>>- provides basic support for processing incoming XML
>>over HTTP
>>* dsig_globus (depends on common and security jar
>>file from lib/dsig*)
>>- provides XML digital signature and limited WS SEC
>>support using Globus 
>>Toolkit 3 grid proxy certificates
>>(later: SOAP 1.1 Section 4 encoding
>>(de)serialization support, small 
>>footprint WSDL, dynamic invocations using WSDL,
>>WS-RM, and other modules)
>>client footprint for common + http_client + invoker
>>is currently 40K jar 
>>(+ 70K for XPP3).
>>the previous version of this client side library is
>>used in Xydra - An 
>>automatic form generator for Web Services 
>>( and was
>>tested for last few 
>>months so i am thinking about releasing it if there
>>is enough interest. 
>>to give you idea how it works here is small code
>>snippet (interfaces 
>>XmlElement, XmlDocument directly model XML Infoset
>>Element and Document 
>>Information Items and are implemented by XPP3/XB1):
>>//construct XML
>>XmlPullBuilder builder =
>>XmlElement request =
>>// create XML service invoker
>>HttpDynamicInfosetInvoker invoker = new
>>// do actual invocation by wrapping message in SOAP
>>1.1 Envelope and 
>>sending it over HTTP
>>XmlDocument response =
>>String r = builder.serializeToString(response);
>>System.out.println("got back "+r);
>>so let me know about other open source Java SOAP
>>implementations that 
>>are very modular and/or have good client side and i
>>would like to hear 
>>if there is need for such library (i noticed some
>>interest in axis-dev 
>>mailing list archives but i could not find any
>>references to open source 
>>toolkit only mentioned were GLUE and Wingfoot both
>>not under Apache-like 
>>Davanum Srinivas wrote:
>>>Please review the latest proposals that we are
>>working on. We can have a VOTE next week to start
>>>the ball rolling for the following. As usual, feel
>>free to sign up for anything you are interested
>>>#1: WS-FX - umbrella for WS-* specification
>>>#2: WSS4J - WS-Security Implementation under WS-FX
>>>#3: SANDESHA - WS-Reliability Implementation under
>>>Davanum Srinivas -
>>If everything seems under control, you're just not
>>going fast enough. —Mario Andretti
>Do you Yahoo!?
>Exclusive Video Premiere - Britney Spears

If everything seems under control, you're just not going fast enough. —Mario Andretti

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