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https://issues.apache.org/jira/browse/SOLR-1675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Inger updated SOLR-1675:
-----------------------------
Attachment: SqlArrayTransformer.java
Attaching the transformer class for transforming the javax.sql.Array instance
to a java.lang.Object[] instance for a multi valued field.
> Placing Custom Transform in example/lib directory does not work properly
> ------------------------------------------------------------------------
>
> Key: SOLR-1675
> URL: https://issues.apache.org/jira/browse/SOLR-1675
> Project: Solr
> Issue Type: Bug
> Components: contrib - DataImportHandler
> Affects Versions: 1.4
> Reporter: Matt Inger
> Priority: Blocker
> Attachments: SqlArrayTransformer.java
>
>
> I have created a Custom transformer for transforming a javax.sql.Array
> instance into a java.lang.Object[] value, and placed it in the example/lib
> directory. I then configured the transformer appropriately in my
> db-data-config.xml:
> {code}
> <entity ...
> transformer="org.apache.solr.handler.dataimport.SqlArrayTransformer"
> {code}
> However, when i try to actually index my documents, i get the following error
> in the console:
> {code}
> org.apache.solr.handler.dataimport.DataImportHandlerException:
> java.lang.NoClassDefFoundError: org/apache/solr/handler/dataimport/Transformer
> at
> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:424)
> at
> org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:242)
> at
> org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:180)
> at
> org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.java:331)
> at
> org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:389)
> at
> org.apache.solr.handler.dataimport.DataImporter$1.run(DataImporter.java:370)
> Caused by: java.lang.NoClassDefFoundError:
> org/apache/solr/handler/dataimport/Transformer
> {code}
> It seems there is some issue with the classloader going on here, and the only
> solution to this problem seems to be to find the exploded web application in
> the "work" directory, and place the .jar file for my transformer in the
> WEB-INF/lib directory there. My guess is that the classloader for the custom
> transformer class is not using the web application's class loader as it's
> parent classloader, and as a result, the Transformer class can't be found.
> I believe I tried this in 1.5-dev as well and had no success either.
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