Costin,
> FYI, I'm planning to propose another pool package ( in the sandbox
> directory), using the code used in tomcat3 as initial code.
If you're talking about org.apache.tomcat.util.collections.SimplePool, then
there shouldn't been any genuine compatibility issues. As far as I can
tell, the interface functionality is the same as
org.apache.commons.pool.ObjectPool, only the methods names are different:
get() <===> borrowObject()
set(Object)/put(Object) <===> returnObject(Object)
getCount() <===> numIdle()
There isn't really a method directly corresponding to getMax(). Not every
pool will have a cap on the number of objects it might return, so that
method may not be appropriate for the top-level interface, although it could
certainly be added as an optional operation.
> maybe we can combine and/or define common interfaces/patterns for pool
access.
The interfaces defined in org.apache.commons.pool are intended to be those
common interfaces. If you don't think they suffice, I'd love to hear about
it.
- Rod
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 02, 2001 1:22 PM
To: '[EMAIL PROTECTED]'
Subject: Re: [PROPOSAL/VOTE] Object Pooling Package
+1 on the proposal.
FYI, I'm planning to propose another pool package ( in the sandbox
directory), using the code used in tomcat3 as initial code.
I think it would be a good idea to place your pool in sandbox first, maybe
we can combine and/or define common interfaces/patterns for pool access.
( it'll take another week or 2 before I can check in the code, I want to
integrated the pool used in the tag library pooling implementation and
another pooling we do before I do )
Costin
( that would also be a first good test on what happens when we have
multiple components doing the same thing ! )
On Mon, 2 Apr 2001, Waldhoff, Rodney wrote:
> Here's the proposal for the object pooling package. The attached JAR
> contains the full bundle.
>
> As I mentioned before, I stole the list of initial committers from the
DBCP
> package, since that's the leading client for this package.
>
> - Rod
>
> ---
> Proposal for Pool Package
>
> (0) Rationale
>
> Often a Java application makes use of instances or resources that are
> expensive to create or that need to be limited due to external
constraints.
> Database and other network connections are leading, although certainly not
> the only examples of this situation. A pool of instances can be helpful in
> these circumstances.
>
> A Commons package for object pooling would give committers an opportunity
to
> coordinate their efforts and create and maintain an efficient,
feature-rich
> package under the ASF license.
>
> (1) Scope of the Package
>
> The package will create and maintain an object (instance) pooling package
to
> be distributed under the ASF license.
>
> The package should support a variety of pool implementations, but
encourage
> support of an interface that makes these implementations interchangeable.
>
> (1.5) Interaction With Other Packages
>
> Pool relies upon on standard JDK 1.2 (or later) and the (proposed)
> Commons-Collections APIs for production deployment. It utilizes the JUnit
> unit testing framework for developing and executing unit tests, but this
is
> of interest only to developers of the component. Pool will also be a
> dependency for several future proposed components for the Jakarta Commons
> subproject.
>
> No external configuration files are utilized.
>
> (2) Initial Source of the Package
>
> The initial codebase was contributed by Rodney Waldhoff from a working
> project and can be distributed under the Apache license.
>
> The proposed package name for the new component is
org.apache.commons.pool.
>
> (3) Required Jakarta-Commons Resources
>
> CVS Repository - New directory pool in the jakarta-commons CVS
> repository. All initial committers are already committers on
> jakarta-commons, so no additional
> user setups are required.
> Mailing List - Discussions will take place on the general
> [EMAIL PROTECTED] mailing list. To help list subscribers
> identify messages of interest, it is
> suggested that the message subject of messages about this component
be
> prefixed with [Pool].
> Bugzilla - New component "Pool" under the "Commons" product category,
> with appropriate version identifiers as needed.
> Jyve FAQ - New category "commons-pool" (when available).
>
> (4) Initial Committers
>
> Morgan Delagrange
> Geir Magnusson Jr.
> Craig R. McClanahan
> Rodney Waldhoff
> David Weinrich
>
>
