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Subject: ISSUE LOGGED: JAVA-1: Accessing SCA Services from non-SCA component code
Von: Michael Rowley [mailto:mrowley@bea.com] Gesendet: Mittwoch, 26. September 2007 00:06 An: sca-j@lists.oasis-open.org Betreff: [sca-j] NEW ISSUE: Accessing SCA Services from non-SCA component code TARGET: Java Common Annotations and APIs specification,
Section
titled "ComponentContext” (currently 1.4.2.1) DESCRIPTION: Code that is completely external to an SCA
domain can communicate to SCA services through the externally advertised service
bindings. However, there is sometimes code that is
deployed that shares much in common with the SCA domain. In increasing
levels of coupling, the code might: 1.
Have SCA APIs on the classpath, implemented to work with
the target domain 2.
The client code is running on one of the JVM runtimes that
is associated with the target domain. 3.
The client code was deployed as part of an SCA deployment,
but the code is not within an SCA component. In some or all of these cases, we should
provide a simple way for the client to access the target
component. The current specification implies that the
client would accomplish this by accessing some ComponentContext that has
references injected on it, although it does not describe what component to use
for this purpose (after all, the client is not associated with a component).
Here is the current text of that section: Non-SCA client code can use the ComponentContext API to
perform operations against a component in an SCA domain. How client code obtains
a reference to a ComponentContext is runtime specific. The following example
demonstrates the use of the component Context API by non-SCA code:
ComponentContext
context = // obtained through host environment-specific means
HelloService
helloService = context.getService(HelloService.class,"HelloService"); String result =
helloService.hello("Hello
World!"); PROPOSAL: Nothing yet.
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