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From "Bob Paulin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TIKA-1507) Under OSGi, ForkParser failes to send core parser classes like ExternalParser
Date Sun, 12 Jul 2015 14:32:04 GMT

     [ https://issues.apache.org/jira/browse/TIKA-1507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bob Paulin updated TIKA-1507:
-----------------------------
    Attachment:     (was: TIKA-1507.patch)

> Under OSGi, ForkParser failes to send core parser classes like ExternalParser
> -----------------------------------------------------------------------------
>
>                 Key: TIKA-1507
>                 URL: https://issues.apache.org/jira/browse/TIKA-1507
>             Project: Tika
>          Issue Type: Bug
>          Components: packaging, parser
>    Affects Versions: 1.6, 1.7
>            Reporter: Nick Burch
>
> Under OSGi, if you try to use ForkParser with the Tesseract OCR parser, it will fail
with:
> java.lang.NoClassDefFoundError: org/apache/tika/parser/external/ExternalParser
> 	at org.apache.tika.parser.ocr.TesseractOCRParser.hasTesseract(TesseractOCRParser.java:117)
> 	at org.apache.tika.parser.ocr.TesseractOCRParser.getSupportedTypes(TesseractOCRParser.java:91)
> 	at org.apache.tika.parser.CompositeParser.getParsers(CompositeParser.java:81)
> 	at org.apache.tika.parser.DefaultParser.getParsers(DefaultParser.java:95)
> 	at org.apache.tika.parser.CompositeParser.getParser(CompositeParser.java:209)
> 	at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:244)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:622)
> 	at org.apache.tika.fork.ForkServer.call(ForkServer.java:144)
> 	at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:124)
> 	at org.apache.tika.fork.ForkServer.main(ForkServer.java:69)
> Caused by: java.lang.ClassNotFoundException: Unable to find class org.apache.tika.parser.external.ExternalParser
> 	at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
> 	... 13 more
> ExternalParser lives in the Tika Core jar, not the Tika Parsers one. This all works fine
outside of OSGi, so it looks like something about the OSGi bundling is causing the fork parser
to fail to send the parser-related classes from Tika Core over to the forked JVM



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