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From "Tim Smith (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1923) Add toString() or getName() method to IndexReader
Date Wed, 23 Sep 2009 14:30:16 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12758717#action_12758717
] 

Tim Smith commented on LUCENE-1923:
-----------------------------------

I'll work up a patch that will do the following:

add getName() method to IndexReader (and all subclasses (SegmentReader, DirectoryReader, MultiReader,
any others i'm not currently aware of that i track down)

have toString() return "indexreaderclassname(getName())"

so, toString for a SegmentReader will look something like:
"org.apache.lucene.index.SegmentReader(_ae)"

for a DirectoryReader, it'll look like:
"org.apache.lucene.index.DirectoryReader(segments_7)"



> Add toString() or getName() method to IndexReader
> -------------------------------------------------
>
>                 Key: LUCENE-1923
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1923
>             Project: Lucene - Java
>          Issue Type: Wish
>          Components: Index
>            Reporter: Tim Smith
>
> It would be very useful for debugging if IndexReader either had a getName() method, or
a toString() implementation that would get a string identification for the reader.
> for SegmentReader, this would return the same as getSegmentName()
> for Directory readers, this would return the "generation id"?
> for MultiReader, this could return something like "multi(sub reader name, sub reader
name, sub reader name, ...)
> right now, i have to check instanceof for SegmentReader, then call getSegmentName(),
and for all other IndexReader types, i would have to do something like get the IndexCommit
and get the generation off it (and this may throw UnsupportedOperationException, at which
point i have would have to recursively walk sub readers and try again)
> I could work up a patch if others like this idea

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