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https://issues.apache.org/jira/browse/SOLR-139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12470082
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Ryan McKinley commented on SOLR-139:
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>
> That wouldn't work for multi-valued fields though, right?
'REMOVE' on a mult-valued field would clear the old fields before adding the
new ones. It is essentially the same as OVERWRITE, but you may or may not pass
in a new value on top of the old one.
> If we keep this option, perhaps we should find a better name...
how about 'IGNORE' or 'CLEAR' It is awkward because it refers to what was in
in the document before, not what you are passing in.
The more i think about it, I think we should drop the 'REMOVE' option. You can
get the same effect using 'OVERWRITE' and passing in a null value.
> Support updateable/modifiable documents
> ---------------------------------------
>
> Key: SOLR-139
> URL: https://issues.apache.org/jira/browse/SOLR-139
> Project: Solr
> Issue Type: Improvement
> Components: update
> Reporter: Ryan McKinley
> Attachments: SOLR-139-IndexDocumentCommand.patch,
> SOLR-139-IndexDocumentCommand.patch, SOLR-139-XmlUpdater.patch
>
>
> It would be nice to be able to update some fields on a document without
> having to insert the entire document.
> Given the way lucene is structured, (for now) one can only modify stored
> fields.
> While we are at it, we can support incrementing an existing value - I think
> this only makes sense for numbers.
> for background, see:
> http://www.nabble.com/loading-many-documents-by-ID-tf3145666.html#a8722293
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