[jira] [Commented] (ISIS-931) Make Isis faster to start.

["Martin Grigorov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ISIS-931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14193486#comment-14193486 ] 

Martin Grigorov commented on ISIS-931:
--------------------------------------

While debugging ISIS-911 I've noticed that is expensive. It is called at start time and tries to load .layout.json file for every introspected method. This includes JRE classes, JDO classes, and many more. I think it should be called only for objects/entities. The expensiveness is that it tries to find a file in the classpath and if it is not found then it throws org.apache.isis.core.metamodel.layoutmetadata.LayoutMetadataReader.ReaderException. The stacktrace of this exception is ignored at org.apache.isis.core.metamodel.specloader.specimpl.FacetedMethodsBuilder#readMetadataProperties so 
ReaderException could override java.lang.Throwable#fillInStackTrace() to return null and save some time.


> Make Isis faster to start.
> --------------------------
>
>                 Key: ISIS-931
>                 URL: https://issues.apache.org/jira/browse/ISIS-931
>             Project: Isis
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: core-1.7.0
>            Reporter: Dan Haywood
>            Assignee: Dan Haywood
>            Priority: Minor
>             Fix For: core-1.8.0
>
>
> Using profiling etc.  JProfiler have provided us with an open source license.



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