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https://issues.apache.org/jira/browse/SOLR-10703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16036062#comment-16036062
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ASF GitHub Bot commented on SOLR-10703:
---------------------------------------

Github user m-khl commented on a diff in the pull request:

    https://github.com/apache/lucene-solr/pull/202#discussion_r119992903
  
    --- Diff: 
solr/contrib/ltr/src/java/org/apache/solr/ltr/response/transform/LTRFeatureLoggerTransformerFactory.java
 ---
    @@ -187,8 +187,8 @@ public String getName() {
         }
     
         @Override
    -    public void setContext(ResultContext context) {
    --- End diff --
    
    here is the problem: we have a plenty of transformers they are not changed? 
 (assuming they shouldn't be. see below)


> Add prepare() and finish() into DocTransformer 
> -----------------------------------------------
>
>                 Key: SOLR-10703
>                 URL: https://issues.apache.org/jira/browse/SOLR-10703
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Diego Ceccarelli
>            Priority: Minor
>             Fix For: master (7.0)
>
>
> This patch adds a {{prepare}} and a {{finish}} method to the interface of 
> {{DocTransformer}} allowing a developer to perform actions before/after a doc 
> transformer is applied to a result set. My use case was to benchmark the 
> performance of a transformer, since transformer time is not part of 
> {{QTime}}. 



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