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https://issues.apache.org/jira/browse/CAY-1796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581541#comment-13581541
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Dzmitry Kazimirchyk commented on CAY-1796:
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Yes, exactly. Thanks for noticing, I've adjusted the description.
                
> ROP: All entity's to-many relationships getting faulted from database when 
> using it as a parameter in qualifier expression.
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CAY-1796
>                 URL: https://issues.apache.org/jira/browse/CAY-1796
>             Project: Cayenne
>          Issue Type: Bug
>          Components: ROP
>    Affects Versions: 3.1B2
>            Reporter: Dzmitry Kazimirchyk
>             Fix For: 3.1B3
>
>
> If entity is used as a parameter in qualifier expression all its unfaulted 
> to-many relationships are faulted prior to actual query sent to server. For 
> example:
> Expression exp = ExpressionFactory.matchExp(Painting.ARTIST_PROPERTY, artist);
> context.performQuery(new SelectQuery(Painting.class, exp));
> Before actual query will be sent to server all artist's to-many relationships 
> will be faulted. What I see is that in the process of query serialization on 
> client side PersistentObjectList.size() is invoked which triggers 
> relationships' faulting from database.

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