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https://issues.apache.org/jira/browse/SOLR-1033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12675580#action_12675580
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Fergus McMenemie commented on SOLR-1033:
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Sorry. I was not as clear as I could have been. No the use case is more
<entity name="e" transformer="TemplateTransformer,RegexTransformer">
<field column="a" template="hello"/>
<field column="c" template="hello world"/>
<field column="b" regex="${e.a}(.*)" sourceColName="c"/>
</entity>
> DIH transformers cannot reuse output from previous transformations
> ------------------------------------------------------------------
>
> Key: SOLR-1033
> URL: https://issues.apache.org/jira/browse/SOLR-1033
> Project: Solr
> Issue Type: Improvement
> Components: contrib - DataImportHandler
> Affects Versions: 1.4
> Environment: All operating systems and software platforms
> Reporter: Fergus McMenemie
> Fix For: 1.4
>
> Attachments: SOLR-1033.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> It can be very useful to reuse the output from a DIH template in other
> templates and or regex transformers. Currently this cannot be done. The
> resolver is initialized at the start of the transformer run with what ever
> values exist for a column name at that instant. As the transformer executes
> it may define new values for column names. My change is intended to update
> the hash used by the resolver after each successful transformation.
> This only applies to the template and regex transformers.
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