[jira] Commented: (SOLR-139) Support updateable/modifiable documents

["Erik Hatcher (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12520554 ] 

Erik Hatcher commented on SOLR-139:
-----------------------------------

I'm experimenting with this patch with tagging.   I'm modeling the fields in this way, beyond general document metadata fields:

   <username>_tags
  usernames

And copyFielding *_tags into "tags". 

usernames field allows seeing all users who have tagged documents.

Users are allowed to "uncollect" an object, which would remove the <username>_tags field and remove their name from the usernames field.   Removing the <username>_tags field use case is covered with the <username>_tags:OVERWRITE mode.  But removing a username from the multiValued and non-duplicating usernames field is not.

An example (from some conversations with Ryan): 

 id: 10
 usernames: ryan, erik

You want to be able to remove 'ryan' but keep 'erik'.

Perhaps we need to add a 'REMOVE' mode to remove the first (all?)
matching values
 /update?mode=OVERWRITE,username=REMOVE
 <doc>
  id=10,
  usernames=ryan
 </doc>

and make the output:

 id: 10
 usernames: erik

But what about duplicate values?  

> 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
>            Assignee: Ryan McKinley
>         Attachments: getStoredFields.patch, getStoredFields.patch, getStoredFields.patch, getStoredFields.patch, getStoredFields.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-IndexDocumentCommand.patch, SOLR-139-ModifyInputDocuments.patch, SOLR-139-ModifyInputDocuments.patch, SOLR-139-ModifyInputDocuments.patch, SOLR-139-ModifyInputDocuments.patch, SOLR-139-XmlUpdater.patch, SOLR-269+139-ModifiableDocumentUpdateProcessor.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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