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Posted to dev@lucene.apache.org by "Murali Krishna P (JIRA)" <ji...@apache.org> on 2018/12/28 04:23:00 UTC

[jira] [Comment Edited] (LUCENE-8601) Adding attributes to IndexFieldType

    [ https://issues.apache.org/jira/browse/LUCENE-8601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16730028#comment-16730028 ] 

Murali Krishna P edited comment on LUCENE-8601 at 12/28/18 4:22 AM:
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[^LUCENE-8601.05.patch] which retains the attributes during the merge and modifies the PerField formats to ignore them, has passed the Lucene/Solr QA above.


was (Author: muralikpbhat):
[^LUCENE-8601.05.patch] which retains the attributes during the merge and modifies the PerField formats ignore them, has passed the Lucene/Solr QA above.

> Adding attributes to IndexFieldType
> -----------------------------------
>
>                 Key: LUCENE-8601
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8601
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/index
>    Affects Versions: 7.5
>            Reporter: Murali Krishna P
>            Priority: Major
>         Attachments: LUCENE-8601.01.patch, LUCENE-8601.02.patch, LUCENE-8601.03.patch, LUCENE-8601.04.patch, LUCENE-8601.05.patch, LUCENE-8601.patch
>
>
> Today, we can write a custom Field using custom IndexFieldType, but when the DefaultIndexingChain converts [IndexFieldType to FieldInfo|https://github.com/apache/lucene-solr/blob/master/lucene/core/src/java/org/apache/lucene/index/DefaultIndexingChain.java#L662], only few key informations such as indexing options and doc value type are retained. The [Codec gets the FieldInfo|https://github.com/apache/lucene-solr/blob/master/lucene/core/src/java/org/apache/lucene/codecs/DocValuesConsumer.java#L90], but not the type details.
>   
>  FieldInfo has support for ['attributes'| https://github.com/apache/lucene-solr/blob/master/lucene/core/src/java/org/apache/lucene/index/FieldInfo.java#L47] and it would be great if we can add 'attributes' to IndexFieldType also and copy it to FieldInfo's 'attribute'.
>   
>  This would allow someone to write a custom codec (extending docvalueformat for example) for only the 'special field' that he wants and delegate the rest of the fields to the default codec.



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