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From "Tim Smith (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1784) Make BooleanWeight and DisjunctionMaxWeight protected
Date Mon, 10 Aug 2009 14:22:14 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741338#action_12741338
] 

Tim Smith commented on LUCENE-1784:
-----------------------------------

ok, will work up a patch on 2.9 making the classes (and members) protected with javadoc noting
the volatility of the classes

people will only be able to get at these classes if they first override BooleanQuery/DisjunctionMaxQuery,
and then in these overridden implementation also override BooleanWeight/DisjunctionMaxWeight
(casual user will never do this anyway)

> Make BooleanWeight and DisjunctionMaxWeight protected
> -----------------------------------------------------
>
>                 Key: LUCENE-1784
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1784
>             Project: Lucene - Java
>          Issue Type: Improvement
>    Affects Versions: 2.4
>            Reporter: Tim Smith
>            Priority: Minor
>         Attachments: LUCENE-1784.patch
>
>
> Currently, BooleanWeight is private, yet it has 2 protected members (similarity, weights)
which are unaccessible from custom code
> i have some use cases where it would be very useful to crawl a BooleanWeight to get at
the sub Weight objects
> however, since BooleanWeight is private, i have no way of doing this
> If BooleanWeight is protected, then i can subclass BooleanQuery to hook in and wrap BooleanWeight
with a subclass to facilitate this walking of the Weight objects
> Would also want DisjunctionMaxWeight to be protected, along with its "weights" member
> Would be even better if these Weights were made public with accessors to their sub "weights"
objects (then no subclassing would be necessary on my part)
> this should be really trivial and would be great if it can get into 2.9
> more generally, it would be nice if all Weight classes were public with nice accessors
to relevant "sub weights"/etc so custom code can get its hooks in where and when desired

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