GlassFish Metro
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Metro is an opensource web service stack that is a part of the GlassFish project, though it can also be used in a stand-alone configuration.[1] Components of metro include JAXB RI, JAX-WS RI, SAAJ RI, SJSXP, and WSIT. It is available under the CDDL and GPLv2 (with classpath exception.)[2]
It is supported by Sun Microsystems.
[edit] History
Originally, the Glassfish project developed two semi-independent project :
- JAX-WS RI, the Reference implementation of the JAX-WS specification
- WSIT, a Java implementation of some of the WS-* and an enhanced support for interoperability with the .Net Framework. It is based on JAX-WS RI as "Web Service layer".
In June 2007, it has been decided to bundle these two components as a single component named Metro[1].
[edit] Market share
Metro is bundled with Java Standard Edition 6 in order to allow consumers of JSE 6 to consume Web Services [2]
Metro is bundled with numerous Application Servers [3] such as :
- GlassFish
- Sun Java System Application Server Platform Edition 9.x
- BEA WebLogic
- JBoss (as of version 5.x)
- TmaxSoft JEUS 6.x
The JAXB reference implementation developed for Metro is used in virtually every Web Services framework (Apache Axis2, Codehaus XFire, Apache CXF) and Application Servers.
[edit] Features
Metro usually behave very well when compared to other web services frameworks in term of functionality. An example of such a comparison is realized by Codehaus at [4], it compares the Apache Axis 1.x, Axis 2.x, Celtix, Glue, JBossWS, Xfire 1.2 and JAX-WS RI + WSIT (the bundle was not yet named Metro at this time).
