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https://issues.apache.org/jira/browse/LUCENENET-185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12728084#action_12728084
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Nick Crowther commented on LUCENENET-185:
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Hi Digy,

There's an example of using a custom filter in the Lucene In Action book from 
Manning that uses the 'docs' and 'freq' arrays after they've been passed into 
the TermDocs.Read() method, so I assumed that they should be passed by 
reference so any changes could be picked up. I've posted a question about it 
here: http://stackoverflow.com/questions/1079934

Nick

> Parameters in interface TermDocs.Read() are not passed by reference
> -------------------------------------------------------------------
>
>                 Key: LUCENENET-185
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-185
>             Project: Lucene.Net
>          Issue Type: Bug
>         Environment: Win XP SP3, .net framework 3.5
>            Reporter: Nick Crowther
>            Priority: Minor
>
> The 'docs' and 'freqs' integer arrays passed in as parameters may be modified 
> in classes that implement this method (e.g.: in class 
> Lucene.Net.Index.SegmentTermDocs), so they should be passed by reference to 
> allow calling classes to access the modifications.

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