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From "Maciej Lizewski (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TIKA-1145) classloaders issue loading resources when extending Tika
Date Thu, 04 Jul 2013 11:27:47 GMT

    [ https://issues.apache.org/jira/browse/TIKA-1145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13700018#comment-13700018
] 

Maciej Lizewski commented on TIKA-1145:
---------------------------------------

it is exactly like you described - tika is embedded in WAR and only my custom parser is outside.
I do not remember the reason but I guess that with tika outside WAR some other functions did
not work, and we wanted parsers in Solr core directories for easier administration (adding/removing
etc)

But anyway like you said - it still *should* work properly when proper classLoader is provided
in TikaConfig :)
                
> classloaders issue loading resources when extending Tika
> --------------------------------------------------------
>
>                 Key: TIKA-1145
>                 URL: https://issues.apache.org/jira/browse/TIKA-1145
>             Project: Tika
>          Issue Type: Bug
>          Components: config, mime
>    Affects Versions: 1.3
>         Environment: Tika as part of standard Solr distribution
>            Reporter: Maciej Lizewski
>
> I noticed that ServiceLoader is using different classloader when loading 'services' like
Parsers, etc (java.net.FactoryURLClassLoader) than MimeTypesFactory (org.eclipse.jetty.webapp.WebAppClassLoader)
when loading mime types definitions. As result - it works completely different:
> When jar with custom parser and custom-mimetypes.xml is added to solr.war - both resources
are located and loaded (META-INF\services\org.apache.tika.parser.Parser and org\apache\tika\mime\custom-mimetypes.xml)
and everything works fine.
> When jar with custom parser is in Solr core lib and configured in solrconfig.xml - only
META-INF\services\org.apache.tika.parser.Parser is loaded, but custom-mimetypes.xml is ignored.
> MimeTypesFactory ignores custom classLoader provided in TikaConfig and always using
only context provided one:
> ClassLoader cl = MimeTypesReader.class.getClassLoader();

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