about sharing doc builders

[Sanjiva Weerawarana <sa...@watson.ibm.com>]

Pavel Ausianik wrote:
> I get a Call from pool from thread t1. Since it is not exists, pool create
> it, t1 use it, creating a DocumentBuilder, return to pool
> I get a Call from pool from thread 2. Since we have an instance of Call in
> pool, it will be reused. The operation is not finished yet in the thread
> t2.
> I get a Call from pool from thread t1. Since it is not exists, pool create
> it, again from t1, since DocumentBuilder for t1 exists, it will be reused
> in new Call.

Sorry but this is not a valid scenario for Apache SOAP - the Apache
SOAP APIs are not thread-safe for mutlithreaded execution
like this. So you cannot have a pool of threads and a pool of Call's
and reuse them like this. Things could break horribly if a call
object is reused while another call is in progress.

If you assume that Calls are not re-used across threads then this
approach works fine right?

Sanjiva.



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