lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "David Smiley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-7277) Make Query.hashCode and Query.equals abstract
Date Mon, 16 May 2016 03:05:12 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-7277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15284096#comment-15284096
] 

David Smiley commented on LUCENE-7277:
--------------------------------------

+1 to make abstract only.

> Make Query.hashCode and Query.equals abstract
> ---------------------------------------------
>
>                 Key: LUCENE-7277
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7277
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Dawid Weiss
>            Assignee: Dawid Weiss
>            Priority: Trivial
>
> Custom subclasses of the Query class have the default implementation of hashCode/equals
that make all instances of the subclass equal. If somebody doesn't know this it can be pretty
tricky to debug with IndexSearcher's query cache on. 
> Is there any rationale for declaring it this way instead of making those methods abstract
(and enforcing their proper implementation in a subclass)?
> {code}
>   public int hashCode() {
>     return getClass().hashCode();
>   }
>   public boolean equals(Object obj) {
>     if (obj == null)
>       return false;
>     return getClass() == obj.getClass();
>   }
> {code}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message