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https://issues.apache.org/jira/browse/SOLR-13267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jochen Barth closed SOLR-13267.
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> complex {!graph query: NullPointerException
> -------------------------------------------
>
> Key: SOLR-13267
> URL: https://issues.apache.org/jira/browse/SOLR-13267
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 7.7
> Reporter: Jochen Barth
> Priority: Major
>
> this query leads to NullPointerException:
> (\{!graph from=id to=parent_ids}fulltext_ocr_txtlarge:phoron
> AND \{!graph from=id to=parent_ids}fulltext_ocr_txtlarge:terrae)
> AND NOT (\{!graph from=id to=parent_ids returnRoot=false}
> (\{!graph from=id to=parent_ids}fulltext_ocr_txtlarge:phoron AND
> {!graph from=id to=parent_ids}fulltext_ocr_txtlarge:terrae))
> It is essentially the query
> X = \{!graph from=id to=parent_ids}fulltext_ocr_txtlarge:phoron
> AND \{!graph from=id to=parent_ids}fulltext_ocr_txtlarge:terrae
> (X) AND NOT (\{!graph from=id to=parent_ids returnRoot=false}(X))
> parent_ids is a multiValued string docValue-Field; fulltext_ocr_txtlarge is
> essentially like the *_txt field.
> Use case is: hierarchical solr-docs, think book, chapter, subchapter etc.
> Each containing fulltext_ocr_txtlarge with the fulltext of this element only.
> So higher level elements (e. g. book) does not contain the fulltext of lower
> level elements (e. g. chapters).
> The query X delivers all chapters with both words, but of course higher level
> elements, too, because the whole book has always more text than single
> chapters.
> the »AND NOT ({!graph ... « part is to filter out the unecessary results,
> like »book« if a chapter already matches.
>
>
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