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https://issues.apache.org/jira/browse/GROOVY-6584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King closed GROOVY-6584.
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> Cannot use memoize() to cache metaclass method call
> ---------------------------------------------------
>
> Key: GROOVY-6584
> URL: https://issues.apache.org/jira/browse/GROOVY-6584
> Project: Groovy
> Issue Type: Bug
> Components: groovy-runtime
> Affects Versions: 2.2.1
> Reporter: Sargis Harutyunyan
> Assignee: John Wagenleitner
> Fix For: 2.4.8
>
>
> Hi I want to extend my list with new method and cache the result because
> actually it will query db but I am getting
> 'java.lang.UnsupportedOperationException', I reproduced it for simple case
> also using groovy console
> {code}
> def lst = []
> lst.metaClass.getTotalCount = {
> println ">>>>>>>>>> 12 <<<<<<<<<<"
> 12 // can be some select count(*) from xxx
> }.memoize()
> println lst.getTotalCount()
> println lst.getTotalCount()
> {code}
> I am getting
> {noformat}
> java.lang.UnsupportedOperationException:
> org.codehaus.groovy.runtime.metaclass.ClosureMetaMethod$AnonymousMetaMethod
> at ConsoleScript10.run(ConsoleScript10:2)
> {noformat}
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