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From "Chris Male (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1566) Allow components to add fields to outgoing documents
Date Thu, 12 Aug 2010 11:39:19 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897704#action_12897704
] 

Chris Male commented on SOLR-1566:
----------------------------------

bq. I've got a basic implementation already that simply adds a small storage piece onto SolrQueryResponse.
It is a <code>Map<Integer, List<DocAnnotations>><code> where a DocAnnotation
is a String name and a Object value. At RespWriting time, it simply adds the objects as fields
onto the appropriate documents. The key to the Map is the Lucene doc id. Not sure if that
is ideal, but I figure anyone adding to a document would have that handle, but that remains
to be seen.

Sounds reasonable to me.  Except I still fear that by creating the DocAnnotation idea we are
now adding another construct to Documents.  Sure, as you say, Solr doesn't materialize Documents
till it needs to write them out, but still a Document consists only of Fields.  Now they consist
of Fields and DocAnnotations.  Its not a big issue I suppose, just wondering whether its needed.
 Perhaps a simple renaming to MetadataField or AnnotatedField or something would suffice.

> Allow components to add fields to outgoing documents
> ----------------------------------------------------
>
>                 Key: SOLR-1566
>                 URL: https://issues.apache.org/jira/browse/SOLR-1566
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>            Reporter: Noble Paul
>            Assignee: Grant Ingersoll
>             Fix For: Next
>
>         Attachments: SOLR-1566.patch, SOLR-1566.patch, SOLR-1566.patch, SOLR-1566.patch
>
>
> Currently it is not possible for components to add fields to outgoing documents which
are not in the the stored fields of the document.  This makes it cumbersome to add computed
fields/metadata .

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