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https://issues.apache.org/jira/browse/POOL-338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16431549#comment-16431549
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Michael C commented on POOL-338:
--------------------------------
Your diff won't help my use case of calling default constructor
{{GenericObjectPool()}}. See the original stack trace. It is not the class
loader that throws the exception. It is the {{if (policy instanceof
EvictionPolicy<?>)}} line evaluates to false for whatever odd reason.
Nice addition to the 2.6 API, but consider adding:
{{ BaseObjectPoolConfig.setEvictionPolicy(EvictionPolicy<T> evictionPolicy)}}
{{ BaseObjectPoolConfig.getEvictionPolicy()}}
plus the logic that favors a not null {{evictionPolicy}} over
{{evictionPolicyClassName}}.
> GenericObjectPool constructor throws an exception
> -------------------------------------------------
>
> Key: POOL-338
> URL: https://issues.apache.org/jira/browse/POOL-338
> Project: Commons Pool
> Issue Type: Bug
> Affects Versions: 2.4.2, 2.4.3, 2.5.0
> Environment: Java 8, Liferay DXP (an OSGi environment).
> Reporter: Michael C
> Priority: Major
>
> Version 2.4.3 GenericObjectPool constructor throws this exception:
> {{java.lang.IllegalArgumentException:
> [org.apache.commons.pool2.impl.DefaultEvictionPolicy] does not implement
> EvictionPolicy}}
> {{ at
> org.apache.commons.pool2.impl.BaseGenericObjectPool.setEvictionPolicyClassName(BaseGenericObjectPool.java:618)}}
> {{ at
> org.apache.commons.pool2.impl.GenericObjectPool.setConfig(GenericObjectPool.java:318)}}
> {{ at
> org.apache.commons.pool2.impl.GenericObjectPool.<init>(GenericObjectPool.java:115)}}
> {{ at
> org.apache.commons.pool2.impl.GenericObjectPool.<init>(GenericObjectPool.java:88)}}
>
> Version 2.5.0 throws the same exception. Version 2.4.2 or older's
> setEvictionPolicyClassName method fail silently for the same reason. This
> line in BaseGenericObjectPool evaluates to false for all versions:
> {{ if (policy instanceof EvictionPolicy<?>) {}}
>
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