Hello,
I am using the commons pool for a project and would like only one object
instance to be stored per key using the GenericKeyedObjectPool - is this
actually possible?
The javadoc for KeyedObjectPool states that:
"KeyedObjectPool implementations may choose to store at most one instance per
key value, or may choose to maintain a pool of instances for each key
(essentially creating a Map of pools)."
However, having looked in the codebase, the GenericKeyedObjectPool implements a
linkedlist of objects, with no option for setting one object per key only...
Also, I am unable to subclass GenericKeyedObjectPool to alter the behaviour
since the members are all private, so that is not an option.
Another option would be to add a custom implementation to my project, however
certain member variables e.g. GenericObjectPool.EVICTION_TIMER are not visible,
which procludes this approach. The only option would be to add a new class to
the commons jar, which I am loathe to do since then it will not be compatible
with future releases e.g. v2.
Many thanks for any feedback.
Cheerio,
Nic Hemley
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