Stateless Session Bean Reference Binding implementation
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Key: TUSCANY-1126
URL: https://issues.apache.org/jira/browse/TUSCANY-1126
Project: Tuscany
Issue Type: New Feature
Reporter: Rashmi Hunt
Please find Stateless Session Bean Reference Binding implementation and
corresponding sample attached with
this JIRA. This contribution is from IBM to Apache as granted by the CCLA
signed on 9 February 2007
Implementation:-
Stateless Session Bean reference binding enables SCA composite to consume
service exposed by external
Stateless EJB. This implementation conforms to current Stateless EJB binding
spec.
Reference binding implementation supports SCA composite running on both
1) managed environment (J2EE)
2) un-managed environment (J2SE)
This implementation can lookup and invoke any Stateless EJB just with the URI
and Reference interface from SCDL.
Key part of this implementation is caller (SCA composite with reference
binding) doesn't need to include
EJB home class or client related stub classes of the EJB. (see a note below).
Stateless EJB home lookup is done based on whether the SCA composite is running
on managed/unmanaged environment.
JNDI name gets resolved either from InitialContext or CosNaming context based
on whether composite is running on
managed/un-managed environment and based on whether JNDI properties are
configured or not. This implementation creates
the stub based on the type of home object through java reflection or via
RMI/IIOP. EJB method is invoked on the stub through java
reflection or through DII, based on whether the ejb object is local or remote.
Sample:-
EJB reference binding sample demonstrates how SCA composite can invoke
Stateless Session Bean which is running on Geronimo.
This sample exercises un-managed env path with configured JNDI properties.
Using Geronimo application server, managed path or
locating through cosNaming is not tested.
Note: Including home class at the caller (composite with reference binding) is
required only if the EJB is running on
Geronimo application server which uses openejb. This is not required for
application servers like WebSphere.
Tuscany revision:
Binding implementation and sample code is compiled and tested with Tuscany SCA
revision 497910.
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