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From Benson Margulies <bimargul...@gmail.com>
Subject Re: A little more CHANGES.txt help on terms(), please
Date Tue, 06 Mar 2012 14:59:44 GMT
On Tue, Mar 6, 2012 at 9:46 AM, Uwe Schindler <uwe@thetaphi.de> wrote:
> Hi,
>
> The recommended way to get an atomic reader from a composite reader is to use SlowCompositeReaderWrapper.wrap(reader).
MultiFields is now purely internal. I think it's only public because the codecs package may
need it, otherwise it should be pkg-private.

Oh! I'll rework the patch again, then. I might include some commentary
in MultiFields at all.

>
> -----
> Uwe Schindler
> H.-H.-Meier-Allee 63, D-28213 Bremen
> http://www.thetaphi.de
> eMail: uwe@thetaphi.de
>
>
>> -----Original Message-----
>> From: Benson Margulies [mailto:bimargulies@gmail.com]
>> Sent: Tuesday, March 06, 2012 3:40 PM
>> To: java-user@lucene.apache.org
>> Subject: Re: A little more CHANGES.txt help on terms(), please
>>
>> On Tue, Mar 6, 2012 at 9:34 AM, Uwe Schindler <uwe@thetaphi.de> wrote:
>> > Hi,
>> >
>> > MultiFields should only be used (as it is slow) if you exactly know
>> > what you are doing and what the consequences are. There is a change in
>> > Lucene 4.0, so you can no longer terms and postings from a top-level
>> > (composite) reader. More info is also here: http://goo.gl/lMKTM
>>
>> Uwe,
>>
>> The 4.0 change is how I got here in the first place. Some code we have here
>> dumped all the terms using the old IndexReader.terms(), so I was working on
>> figuring out how to replace it. For my purposes, which are a dev tool, I think
>> that MultiFields will be fine.
>>
>> --benson
>>
>>
>> >
>> > Uwe
>> >
>> > -----
>> > Uwe Schindler
>> > H.-H.-Meier-Allee 63, D-28213 Bremen
>> > http://www.thetaphi.de
>> > eMail: uwe@thetaphi.de
>> >
>> >
>> >> -----Original Message-----
>> >> From: Benson Margulies [mailto:bimargulies@gmail.com]
>> >> Sent: Tuesday, March 06, 2012 3:15 PM
>> >> To: java-user@lucene.apache.org
>> >> Subject: Re: A little more CHANGES.txt help on terms(), please
>> >>
>> >> On Tue, Mar 6, 2012 at 8:56 AM, Uwe Schindler <uwe@thetaphi.de> wrote:
>> >> > AtomicReader.fields()
>> >>
>> >> I went and read up AtomicReader in CHANGES.txt. Should I call
>> >> SegmentReader.getReader(IOContext)?
>> >>
>> >> I just posted a patch to CHANGES.txt to clarify before I read your
>> >> email, shall I improve it to use this instead of
>> >>
>> >>     MultiFields.getFields(indexReader).iterator();
>> >>
>> >> which I came up with by fishing around for myself?
>> >>
>> >> >
>> >> > -----
>> >> > Uwe Schindler
>> >> > H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de
>> >> > eMail: uwe@thetaphi.de
>> >> >
>> >> >
>> >> >> -----Original Message-----
>> >> >> From: Benson Margulies [mailto:bimargulies@gmail.com]
>> >> >> Sent: Tuesday, March 06, 2012 2:50 PM
>> >> >> To: java-user@lucene.apache.org
>> >> >> Subject: A little more CHANGES.txt help on terms(), please
>> >> >>
>> >> >> Under "LUCENE-1458, LUCENE-2111: Flexible Indexing", CHANGES.txt
>> >> >> appears to be missing one critical hint. If you have existing code
>> >> >> that called IndexReader.terms(), where do you start to get a FieldsEnum?
>> >> >>
>> >> >> ---------------------------------------------------------------------
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>> >> >
>> >> >
>> >> > ---------------------------------------------------------------------
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>> >> >
>> >>
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>> >
>> >
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>> >
>>
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>
>
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