hi all,
I read lucene in action 2nd Ed. It says SimpleSpanFragmenter will
"make fragments that always include the spans matching each document".
And also a SpanScorer existed for this use. But I can't find any class
named SpanScorer in lucene 3.0.1. And the result of HighlighterTest
class in c
You can construct your own analyzer by creating
it from a pre-existing Tokenizer
(e.g. WhiteSpaceTokenizer) and any number
of TokenfFilters (e.g. TokenFilter). You can
string any number of TokenFilters together
to get many different effects.
But I have to ask, why you want to keep capitalization?
Hi Larry-
> Right now I'm using Lucene with a basic Whitespace Anayzer but I'm having
> problems with stemming. Does anyone have a recommendation for other
> text analyzers that handle stemming and also keep capitalization, stop words,
> and punctuation?
Have you tried the SnowballFilter? You co
I just skimmed your message, but Lucene provides
for multiple sorts. You can construct a Sort object
from an arbitrary number of fields, and any documents
that all sort equally for fields 1..k will be resolved
by considering field k+1.
The performance impact when searching is mostly
upon the very
BTW: Saw this in the SOLR docs...
- If sortMissingLast="false" and sortMissingFirst="false" (the
default),
* then default lucene sorting will be used which places docs without
the
field first in an ascending sort and last in a descending sort.*
On Wed, May 19, 2010 at 4
I'm not a Lucene Guru so hopefully you get a more definitive response.
I believe this means you want a way to specify ... "Nulls High" / "Nulls
Low" for your field (in this case you want Nulls High I believe).
I haven't seen support for that (but it might exist). Looking at
StringValComparator I'
Hi,
Right now I'm using Lucene with a basic Whitespace Anayzer but I'm having
problems with stemming. Does anyone have a recommendation for other text
analyzers that handle stemming and also keep capitalization, stop words, and
punctuation?
Thanks,
Larry
Larry A. Hendrix, Graduate Student
C
Hi All
I've got a problem I'm trying to solve the whole day:
Let's say I have an index with two fields, the first one is always filled and
the second one only sometimes.
Now I want to search something on the first field and want the results sorted
by relevance, then by the first field, then by
|Hi, I need to sort results by two fields. First one is numeric and sorting
should be in ascending order.
Second one should be ordered in a "levels" structure.
Here is the example:
Unsorted:
DocId SortFieldA SortFieldB
1101A
2102B
3102A
If you never delete docs, then w/ the default merge policy, the docIDs
should never change.
But... this should be considered an impl detail of Lucene. In theory
someday this could change. EG there's an issue open (LUCENE-1076) to
allow a merge policy to select out-of-order merges, which they can
> Is there a way (perhaps a formulae) to accurately
> judge the memory requirement for a Lucene index?
> (May be based on number of documents or index
> size etc?)
The short answer is no, although there are some things you can
estimate based on the number of fields, terms etc. Sorting will use
m
ummm i am just toying with Lucene and katta, so to have apples to apples
comparison I am using NFS mount for lucene and same FS as a filesystem for
Katta/HADOOP
Saurabh Agarwal
On Tue, May 18, 2010 at 1:46 PM, Uwe Schindler wrote:
> Then why use NFS?
>
> -
> Uwe Schindler
> H.-H.-Meier-Alle
Hi,
this works fine with Lucene.
Use NumericField and NumericRangeQuery to index the file date
(File.lastModified as NumericField.setLongValue()).
-
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: u...@thetaphi.de
> -Original Message-
> From: vijay r
Sure. Create an index with fields like
name: somefile.whatever
creator: james
lastmod: 20100518
created: 20100518
...
Make sure that the fields that you want to search on are indexed,
create some queries and away you go. You'll need range queries for
the before and since tests.
Good
Then why use NFS?
-
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: u...@thetaphi.de
> -Original Message-
> From: Saurabh Agarwal [mailto:srbh.g...@gmail.com]
> Sent: Tuesday, May 18, 2010 10:13 AM
> To: java-user@lucene.apache.org
> Subject: Re: Lock
Thanks :)
i am using only one server to create the index
Saurabh Agarwal
On Tue, May 18, 2010 at 1:41 PM, Ian Lea wrote:
> Use SimpleFSLockFactory. The default, NativeFSLockFactory, doesn't
> play well with NFS.
>
> And a warning: lucene does work on NFS but you may run into problems
> if you
Use SimpleFSLockFactory. The default, NativeFSLockFactory, doesn't
play well with NFS.
And a warning: lucene does work on NFS but you may run into problems
if your index has a lot of modifications and/or is accessed from
different servers.
--
Ian.
On Tue, May 18, 2010 at 6:56 AM, Saurabh Aga
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