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Date: Sun, 4 Feb 2007 01:00:18 -0800 (PST)
From: "Ryan McKinley (JIRA)" <jira@apache.org>
To: solr-dev@lucene.apache.org
Subject: [jira] Commented: (SOLR-139) Support updateable/modifiable
 documents
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    [ https://issues.apache.org/jira/browse/SOLR-139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12470035 ] 

Ryan McKinley commented on SOLR-139:
------------------------------------

SOLR-139-IndexDocumentCommand.patch adds a new command to UpdateHandler and deprecates 'AddUpdateCommand'

This patch is only concerned with adding updateability to the UpdateHandler, it does not deal with how request handlers specify what should happen with each field.

I added:

public class IndexDocumentCommand 
{
  public enum MODE {
    OVERWRITE, // overwrite existing values with the new one. (the default behavior)
    APPEND,    // add the new value to existing value
    DISTINCT,  // same as APPEND, but make sure each value is distinct
    INCREMENT, // increment existing value.  Must be a number!
    REMOVE     // remove the previous value.
  };

  public boolean overwrite = true;
  public SolrDocument doc;
  public Map<SchemaField,MODE> mode; // What to do for each field.  null is the default
  public int commitMaxTime = -1; // make sure the document is commited within this much time
}

RequestHandlers will need to fill up the 'mode' map if they want to support updateability.  Setting the mode.put( null, APPEND ) sets the default mode.


> 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
>
>
> 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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