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https://issues.apache.org/jira/browse/LUCENE-4215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13411996#comment-13411996
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James Dyer commented on LUCENE-4215:
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roman,
See the constructor for oas.handler.dataimport.DocBuilder. If you specify the
"writerImpl" parameter, it overrides the passed-in SolrWriter with your
DIHWriter instance. The current situation is a poor one and what you propose
is definitely an improvement! However, I think you can override SolrWriter
with your own impl without code changes. See SOLR-2943 for a full example.
> DataImportHandler not using its own interface
> ---------------------------------------------
>
> Key: LUCENE-4215
> URL: https://issues.apache.org/jira/browse/LUCENE-4215
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/other
> Affects Versions: 4.0
> Reporter: roman
> Labels: DIH
> Fix For: 4.0
>
> Attachments: dateimporthandler-use-generic-type.patch
>
>
> It is hard to extend DIH (e.g. to provide our own writers). DIH accepts only
> the SolrWriter instances, despite they implement the DIHWriter interace.
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