Performance of DbDirectory

I recently had a thought to do with DbDirectory - specifically would it be possible to use something like Oracle's inbuilt replication to have mutiple Reader machine being able to read the index with automatic partitioning, redundancy and failover? Also, what is performance like for DbDirectory

Using Lucene as compressed DB

Hi, I am looking for a in memory Database which needs high speed search capability as well as should compress the data stored. Currently have only one table with two columns only in my design. Can we trick Lucene to use it for the above purpose? I am thinking something like: - Create a initial i

RE: Using Lucene as compressed DB

Its not a trick. And this is what lucene meant for. Jelda > -Original Message- > From: Sammpathkumar, C [mailto:[EMAIL PROTECTED] > Sent: Wednesday, June 13, 2007 9:36 AM > To: java-user@lucene.apache.org > Subject: Using Lucene as compressed DB > > Hi, > > I am looking for a in memor

Cannot save index to 'index' directory, please delete it first

Hello,I tried uninstalling and installing Lucene 2.1.0 and Tomcat 5.5. I followed the Lucene demo instructions and set the CLASSPATH as follows: .;C:\lucene-2.1.0\lucene-core-2.1.0.jar;C:\lucene-2.1.0\lucene-demos-2.1.0.jar I tehn typed java org.apache.lucene.demo.IndexFiles C:\lucene-2.1.0\

Re: ERROR opening the Index - contact sysadmin!

Here's what I did: 1. Downloaded and unpacked 2.1.0 2. >cd lucene-2.1.0 3. >java -cp lucene-core-2.1.0.jar:lucene-demos-2.1.0.jar org.apache.lucene.demo.IndexFiles /lucene-2.1.0/ docs Step 3 takes a little bit to run. You can point this at any directory you want to index 4. >ls BUILD.t

Re: How to implement AJAX search~Lucene Search part?

Thanks Mathieu! Didn't realise this was avalaible before you mentioned it. Did comparative tests, and it is as fast or much faster, thanks to caching, depending on the length of the prefix. Hey, it even works with wildcard within the "search string". Thanks again! Isn't Lucene wonderful! Patri

RE: ERROR opening the Index - contact sysadmin!

I tried doing what you did. At step 3, I got the following: Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/lucene/demo/IndexFiles Thank you in advance for your help. - Lucene User> From: [EMAIL PROTECTED]> Subject: Re: ERROR opening the Index - contact sysadmin!> Date:

Re: MultiSearcher, Hits and createWeight

In case anyone was interested, making the change I described surfaced a bug that causes the custom similarity to not work. There is a patch: https://issues.apache.org/jira/browse/LUCENE-789 On 5/29/07, Israel Tsadok <[EMAIL PROTECTED]> wrote: Hi, I am developing a distributed index, using Mult

Re: Using Lucene as compressed DB

Be very clear what you want Lucene to do. What your database schema is and whether the columns are indexable is totally irrelevant to your Lucene index. What is relevant is how you construct your lucene index to solve the underlying problem. Of course, the underlying problem may be reflected in yo

Re: ERROR opening the Index - contact sysadmin!

Really, check your e-mail settings. Or put in manual line breaks. The lack of line breaks makes it virtually impossible to read your messages and makes it very much less likely that anyone will respond. Best Erick On 6/13/07, Lucene Help <[EMAIL PROTECTED]> wrote: I tried doing what you did.

Re: ERROR opening the Index - contact sysadmin!

Lucene User... (that's a very generic name to be addressed. if you really want a phoney name, consider something less generic in this forum), you probably are using HTML format, try changing it to plain text. -Gopi On 6/13/07, Erick Erickson <[EMAIL PROTECTED]> wrote: Really, check your e-mail

Re: ERROR opening the Index - contact sysadmin!

This is a classpath issue. Please go back through the directions very carefully. My example of classpath is for my Operating System (OS X). You will need to configure you classpath appropriate for you operating system. On Jun 13, 2007, at 10:06 AM, Lucene Help wrote: I tried doing what

Re: Why use RMI search very slow! when have 13 TermQuery! Return cost 7500 ms .

I think you stumbled onto the same problem I had, check out: http://mail-archives.apache.org/mod_mbox/lucene-java-user/200705.mbox/[EMAIL PROTECTED] If you don't want to rebuild lucene, consider using the public TopDocs search(Query query, Filter filter, int n) method instead of the one that re

In which position of a document a word was found?

Hi all, I am new to Lucene and I have been reading the book "Lucene In Action", here is my question: When searching for a word through an index is there any way to know in which positions (may be more than one) of each document that word was found? The index is constructed in the following way:

Re: MultiSearcher, Hits and createWeight

Israel, I don't really know much about MultiSearcher, but just to clarify: are you saying that the change you have works ok, as long as people are also using hte patch in LUCENE-789 (which will be in 2.2) or are you saying that the change you tried doesn't work when using a custom similarity, for

multiple questions about lucene

Hi, 1. I am dealing with the logs files and have to index the whole file (the attempt to increase setMaxFielldLength eventually causes out of memory error). I am sure that I am not a first person that encounters this problem. What is the most efficient way to handle this situation? 2. I am index

Re: multiple questions about lucene

Hi Tanya, I think one option is to index each log file with 2 fields, the name of the log file and a line of your log. This way you can do a query like this: +log_file_name:"log1" +line:"word1" -(+line:"word1" +line"word2") Hope it helps, Rossini On 6/13/07, Tanya Levshina <[EMAIL PROT

Investigating Lucene's Applicability to [Unusual?] Use Case

Hello: [This is not an intentional cross-posting. I posted this same question to the 'general' lucene list; replies there suggested that I'd have better/quicker responses using this list instead.] I'm investigating Lucene as a replacement for a special-purpose search technology that was develop

Re: Performance of DbDirectory

Hi Simon: If you are using Oracle 10g you can get the advantage of using Lucene inside the Oracle JVM. Look at this contribution: http://issues.apache.org/jira/browse/LUCENE-724 The most important difference of this implementation in that all the operation between Lucene to index table data

Wildcard query with untokenized punctuation (again)

My very simple analyzer produces tokens made of digits and/or letters only. Anything else is discarded. E.g. the input "smith,anna" gets tokenized as 2 tokens, first "smith" then "anna". Say I have indexed documents that contained both "smith,anna" and "smith,annanicole". To find them, I enter th

Re: Wildcard query with untokenized punctuation (again)

After taking a quick look, I don't see how you can do this without modifying the QueryParser. In QueryParser.jj you will find the conflict of interest at line 891. This line will cause a match on smith,ann* and trigger a wildcard term match on the whole piece. This is again caused by the fact

Using Lucene to search Multiple Databases

HI, My requirement is to search multiple databases which are present on different machines all of which are indexed using lucene Can it be done using the web interface of lucene ? If yes what is the procedure for that and what other tools are requried? To make it more clear, i'm giving an exampl

How to Use ParallelReader

Hi, There is one class named org.apache.lucene.index.ParallelReader, as its javadoc stated: An IndexReader which reads multiple, parallel indexes. Each index added must have the same number of documents, but typically each contains different fields. Each document contains the union of the field