changes to ComponentHelper.sfShouldDetachOrTerminate()
Steve Loughran <[email protected]> Thu, 21 Sep 2006 11:59:53 +0100
| Newsgroups | gmane.comp.java.smartfrog.devel |
|---|---|
| Message-ID | <[email protected]> |
if you dont use or plan to use
ComponentHelper.sfShouldDetachOrTerminate(), then skip this message.
if you do use it, know that I've been editing the code to make it more
readable, and, I think, getting its semantics consistent with what was
intended.
If you use it on any component after it has started (or in a helper
thread, after all work has done), then it decides whether or not to
terminate or detach the component based on three attributes
sfShouldTerminate - should we terminate the component (default, false)
sfShouldTerminateQuietly - should we terminate the component quietly
(default, false)
sfShouldDetach - should we detach the component
Here is the policy I've implemented
-if either sfShouldTerminate or sfShouldTerminateQuietly is true, we
terminate
-if sfShouldTerminateQuietly is true, then we terminate quietly,
regardless of the value of sfShouldTerminate
-if sfShouldDetach is true then the component is detached. This happens
even if the component doesnt want to terminate
-If none of the attributes are set, or all are false then nothing happens.
The effect is that by adding a call to new
ComponentHelper(this).sfShouldDetachOrTerminate(...) at the end of
sfStart() -or at the end of any thread that does startup work, your
component slots straight into the workflow components, as it can be told
to terminate or detach after deployment. It will also slot into the
testing components that I am currently writing into sfServices, as these
will use sequences for assertions and finally {} operations.
I'm retrofitting the operation to components that make sense to embed
into workflow stuff. We already use it at some of the file and java
components, but it is not as ubiquitous as it ought to be for effective
workflow sequences -not enough things terminate after starting.
-steve
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