What kind of application are you trying to write?
On Fri, Aug 9, 2013 at 6:31 AM, John C wrote:
> Hi,
>
> can I have an advice to write an EJB app that R/W on Lucene's Indexs?
> Please.
>
> Thank you
>
Part of the answer depends on what kind of records you have. For instance,
are you dealing with a lot of numeric data?
If you need all those functions and only want to support exact matches and
basic boolean comparisons, then I'd go with a RDBMS instead of Lucene.
You'll get better support for the
Paul,
So long as you are not writing to the 3.x index, it appears Lucene 4.0 can
read the indexes in a read only format. See Mike McCandle's blog post
http://blog.mikemccandless.com/2012/07/lucene-400-alpha-at-long-last.html about
the alpha release codecs. As to whether or not that codec allows yo
Trupti,
Looking over your sample query, that looks like you're trying to do a SQL
query against a database instead of a Lucene query. If you're going against
a SQL database, Lucene isn't a good tool for the problem you've outlined.
If you're using SQL, you can do multiple joins to link multiple ta
What metrics are you measuring performance by? Also, what is your current
setup? You might be able to speed up your current setup by tweaking
configuration settings without needing more hardware.
On Wed, Jul 18, 2012 at 11:50 AM, Dragon Fly wrote:
>
> Hi,
>
> If I want to improve performance, whi
Easiest way to do that would be to append all your values together and then
add them in one pass. Unfortunately, you can only add a field + values
once.
-Stephen
On Wed, Mar 7, 2012 at 9:39 AM, Dave Seltzer wrote:
> I'm using a MemoryIndex to search in-memory content.
>
> I was wondering if the
If you have enough RAM, have you looked into using a MMap directory instead
of the FSDirectory? That will push your index up into RAM instead of having
to keep hitting the disk to look stuff up.
Also, have you thought about running some precanned queries, prior to
exposing the app to the user, to
Working with Lucene 3.5, I'd like to append a payload to a specific field
in the index, at indexing time. To get that, I use the following code to
produce a token stream with the Standard Analyzer for the field I want to
place the payload on.
public static TokenStream tokenStream(final String fiel
Have you taken a look at the MemoryIndex?
http://lucene.apache.org/java/3_5_0/api/all/index.html See in particular:
> Typically, it is about 10-100 times faster than RAMDirectory. Note that
> RAMDirectory has particularly large efficiency overheads for small to
> medium sized texts, both in time a
Thanks for the reply, wrapping with the SlowMultiReaderWrapper worked.
Also, thanks for the overview on the direction of index readers!
On Wed, Jan 25, 2012 at 5:21 PM, Uwe Schindler wrote:
> Hi,
>
> > Goofing off with my index, I ran across this example
> >
> http://www.lucidimagination.com/blo
Goofing off with my index, I ran across this example
http://www.lucidimagination.com/blog/2009/05/26/accessing-words-around-a-positional-match-in-lucene/
for
using span queries to see what else is around a word that hits. Noticeably,
there's a nice getSpans(IndexReader) method that just takes in th
/blog.mikemccandless.com
>
> On Tue, Jan 24, 2012 at 4:10 PM, Stephen Howe
> wrote:
> > Hi all,
> >
> > Looking at some older Lucene examples, I noticed for older versions of
> > lucene that IndexReader came with a handy terms() method that would
> return
> > a
Hi all,
Looking at some older Lucene examples, I noticed for older versions of
lucene that IndexReader came with a handy terms() method that would return
a listing of all the terms in the index and let you get at the term
frequency. In Lucene 4.0, I noticed this method vanished from IndexReader.
I
I've been playing around with Lucene's MemoryIndex and anytime I try to use
index.addField(String, String, Analyzer), I
receive: java.lang.NoSuchMethodError:
org.apache.lucene.util.BytesRef.deepCopyOf(Lorg/apache/lucene/util/BytesRef;)Lorg/apache/lucene/util/BytesRef;
anytime I make a call to it. I
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