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<h2>Welcome to Apache Axis2</h2> | |
<p>Apache Axis2 is an implementation of the <a | |
href="http://www.w3.org/TR/soap/">Simple Object Access Protocol (SOAP) | |
Recommendation</a> from the <a href="http://www.w3.org">W3C</a>. Axis2 can | |
be used to provide and consume Web Services.</p> | |
<p>From the <a href="http://www.w3.org/TR/soap/">W3C recommendation</a>:</p> | |
<div style="padding-left: 20px; padding-top: 5px; font-style:italic;"> | |
"SOAP is a lightweight protocol for exchange of information in a | |
decentralized, distributed environment. It is an XML based protocol that | |
consists of three parts: an envelope that defines a framework for describing | |
what is in a message and how to process it, a set of encoding rules for | |
expressing instances of application-defined datatypes, and a convention for | |
representing remote procedure calls and responses."</div> | |
<p>Apache Axis2 is an effort to re-implement both Axis/Java and Axis/C++ on a | |
new architecture. Building upon the "handler chain" model developed in | |
Axis1, Axis2 introduces a more flexible pipeline architecture which lends | |
itself to greater modularity and extensibility. This extensibility will | |
allow Axis2 to act as a foundation for a growing constellation of associated | |
Web Services protocols including:</p> | |
<ul> | |
<li><a | |
href="http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=wsrm">WS-ReliableMessaging</a></li> | |
<li><a | |
href="http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=wss">WS-Security</a></li> | |
<li><a | |
href="http://www.w3.org/Submission/ws-addressing/">WS-Addressing</a></li> | |
</ul> | |
<h2>Latest Release</h2> | |
<p><b>02 December 2005 - Apache Axis2 Version 0.93 Released!</b> <a | |
href="http://ws.apache.org/axis2/download.cgi">(Download 0.93)</a></p> | |
<p>Axis2 is becoming more and more stable. <a href="http://ws.apache.org/axis2/download.cgi">Download | |
it!. </a>This 0.93 release contains the following additional features:</p> | |
<ul> | |
<li>JDK 1.5 compatibility </li> | |
<li> Configurable handler chains using axis2.xml </li> | |
<li> Improved class loader hierarchy </li> | |
<li> Improved security module with dynamic configurability </li> | |
<li> ADB (Axis Data Binding) with complete simple types support and limited complex type support </li> | |
<li> Jalopy based code formatting of generated code </li> | |
<li>Proxy support and NTLM authentication </li> | |
<li>support for rpc/literal </li> | |
<li>And numerous bug fixes after 0.92 release </li> | |
</ul> | |
<h3 id="head-4804f145dbcf856d6cfef8fc5fff555e5590931b">Experimental features list</h3> | |
<ol type="1"> | |
<li> DOOM - DOM implementation over OM </li> | |
<li> Java2WSDL </li> | |
<li> RPC Support </li> | |
</ol> | |
<h3>Major changes since last release </h3> | |
<ol> | |
<li> Refactored org.apache.axis2.clientapi to org.apache.axis2.client </li> | |
<li> Introduction of Options to configure clients </li> | |
<li>Renaming of descriptors. OperationDescription -> AxisOperation, ServiceDescription -> AxisService, ServiceGroupDescription -> AxisServiceGroup</li> | |
</ol> | |
<p>We are getting closer to a 1.0 release, the remaining tasks to be | |
completed before a 1.0 release include: SOAP 1.1 and 1.2 validation, Our own | |
data binding implementation, WSDL Generation.</p> | |
<h2>Axis2 Background and Motivation</h2> | |
<p>Axis1 was built under the assumption that other protocols such as | |
WS-ReliableMessaging would be integrated into Axis1's handler chain. Axis1 | |
had the concept of a MessageContext and a chain of transport, service, and | |
global message handlers, but Axis1 lacked a clear extension architecture to | |
enable clean composition of such layers. One of the key motivations for Axis2 | |
is to provide a clean and simple environment for implementations of | |
associated WS standards such as <a | |
href="http://ws.apache.org/sandesha/">Apache Sandesha</a> and <a | |
href="http://ws.apache.org/wss4j/">Apache WSS4J</a>. Implementations of | |
associated standards should be able to easily interface with the base SOAP | |
Message handling system. In summary, Axis2 has a more modular and flexible | |
message handling pipeline, it focuses on the details of message handling and | |
provides clear hooks for implementations of associated Web Services standards | |
and protocols. This evolution will allow Axis to be a foundational | |
technology for next generation Web Services.</p> | |
<p>Axis2 introduces a representation for SOAP messages called <b>AXIOM (AXIs | |
Object Model)</b>. AXIOM consists of two parts: a complete XML Infoset | |
representation and a SOAP Infoset representation. The XML Infoset | |
representation provides a JDOM-esque API built atop a deferred model via a | |
StAX-based (Streaming API for XML) pull parsing API. A key feature of AXIOM | |
is that it allows one to stop building the XML tree and just access the pull | |
stream directly; thus enabling both maximum flexibility and maximum | |
performance. This approach allows Axis2 to support multiple levels of | |
abstraction for consuming and offering Web services: using plain AXIOM, using | |
generated code and statically data-bound data types and so on. Developers | |
with demanding performance requirements will be able to use AXIOM to create | |
highly scaleable Web Services.</p> | |
<p>A third shift in Axis 2 is the de-emphasis of RPC-oriented Web Services | |
and a shift towards more document-oriented, message style asynchronous | |
service interactions. With Axis2, clients can interact with servers in a | |
number of ways, and the client API provides both a blocking and non-blocking | |
API. At the time of Axis1's design, RPC-style, synchronous, request-response | |
interactions were the order of the day for Web services. Today service | |
interactions are much more message-oriented and exploit many different | |
message exchange patterns. The Axis2 engine architecture is careful to not | |
build in any assumptions of request-response patterns to ensure that it can | |
be used easily to support arbitrary message exchange patterns. Don't | |
worry,you'll still be able to use Axis2 like you used Axis1, you'll just have | |
a richer set of options for client-server interaction.</p> | |
<h2>Archived News</h2> | |
<p><b>26 September 2005 - Apache Axis2 Version 0.92 Released!</b> <a | |
href="http://ws.apache.org/axis2/download.cgi">(Download 0.92)</a></p> | |
<p>Axis2 is becoming more and more stable. <a href="releases.html#0.9">Download it!</a> This 0.92 release is a glimpse of 1.0 that should be comming soon. This 0.92 release contains the following additional features:</p> | |
<ul> | |
<li>WS-Security support using WSS4J</li> | |
<li>Support for context hierarchy serialization</li> | |
<li>Service Groups</li> | |
<li>and numerous bug fixes after 0.91 release</li> | |
<p>The release includes following tools</p> | |
<li>Admin Web App</li> | |
<li>WSDL2Java, eclipse Plugin/Command line version</li> | |
<li>Service Archive Wizard, eclipse Plugin</li> | |
<li>Module Archive Wizard, eclipse Plugin</li> | |
<li>Service Archive Wizard, IntelliJ IDEA Plugin</li> | |
</ul> | |
<p>We are getting closer to a 1.0 release, the remaining tasks to be completed before a 1.0 release include: SOAP 1.1 and 1.2 validation, Our own data binding implementation, WSDL Generation.</p> | |
<p><b>12 August 2005 - Apache Axis2 Version 0.91 Released!</b> <a | |
href="http://ws.apache.org/axis2/download.cgi">(Download 0.91)</a></p> | |
<p>Axis2 is becoming more and more stable. <a href="http://ws.apache.org/axis2/download.cgi">Download | |
it!</a> This 0.91 release is a glimpse of 1.0 that should be comming soon. | |
This 0.91 release contains the following additional features:</p> | |
<ul> | |
<li>File Caching for MTOM</li> | |
<li>SOAP Faults based on the SOAP version and better fault handling</li> | |
<li>Different character encoding support</li> | |
<li>Improved infoset support in AXIOM</li> | |
<li>Improved code generation templates</li> | |
<li>Numerous bug fixes</li> | |
</ul> | |
<p></p> | |
<p><b>02 July 2005 - Apache Axis2 Version 0.9 Released!</b> <a | |
href="releases.html#0.9">(Download 0.9)</a></p> | |
<p>Axis2 is taking shape. <a href="releases.html#0.9">Download it!</a> This | |
0.9 release is a glimpse of 1.0 that should be comming soon. This 0.9 release | |
contains the following additional features:</p> | |
<ul> | |
<li>XML Beans based data binding support</li> | |
<li>Support for WS-Addressing, both the submission and final versions</li> | |
<li>REST Web Service Support</li> | |
<li>MTOM/SWA attachments support</li> | |
<li>SAAJ implementation</li> | |
</ul> | |
<p><b>07 June 2005 - Apache Axis2 Milestone 2 (M2) Released</b></p> | |
<p>Apache Axis2 is starting to take shape, features implemented in this | |
second milestone release are:</p> | |
<ul> | |
<li>Modules - a mechanism to extend the SOAP Processing Model</li> | |
<li>Support for WS-Addressing</li> | |
<li>Axis2 Client API - Blocking and Non-Blocking API</li> | |
<li>Support for One-Way Messaging and Request Response Messaging</li> | |
<li>WSDL Code Generation Tool.</li> | |
<li>HTTP, SMTP, and TCP transport Support</li> | |
</ul> | |
This release also includes tools such as an administraion web application, | |
and three Eclipse plug-ins: WSDL2WS, Service Archive Wizard, and Module | |
Archive Wizard. | |
<p><b>24 February 2005 - Apache Axis2 Milestone 1 (M1) Released</b></p> | |
<p>This first milestone release of Axis2 includes the following features:</p> | |
<ul> | |
<li>AXIOM, a SOAP specific streaming XML infoset model for SOAP 1.1/1.2 | |
Messages</li> | |
<li>WSDL Object Model built based on the proposed WSDL 2.0 Component | |
Model.</li> | |
<li>Handler framework with the support to specify the location of the | |
Handler in a specific Phase</li> | |
<li>Support to bundle and enable the Handlers as Modules</li> | |
<li>Support for the Synchronous and Asynchronous IN-OUT messaging over HTTP | |
transport</li> | |
<li>Hot deployment of Web Services</li> | |
</ul> | |
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