search for: indexreaders

Hi, I''m building a web server application using Ferret [thanks so much Dave], Mongrel and Camping which works fine servicing one request at a time, but serialises searches if more than one request arrives, so I''d like some advice please about the best way to use multiple readers and one writer. Some background ... query requests which in my case are always read only, arrive via

Some time back in September, [sorry to be so slow], Dave wrote: > When you open an IndexReader on the index it is opened up on > that particular version (or state) of the index. So any > operations on the IndexReader (like searches) will only show > what was in the index at the time you opened it. Any modifications > to the index (usually through and IndexWriter) that occur

Hi All, Hope all is going well. I''m having trouble with the following code creating an in memory index reader - it seems to be attempting to read from a file regardless. Here''s the simple code: require ''rubygems'' require ''ferret'' a = Ferret::Index::Index.new r = Ferret::Index::IndexReader.new(nil) Running the code on my OS X machine

Hi there, Sorry if this has come up before, but I couldn''t see it obviously addressed anywhere. There are a few methods in IndexReader that raise NotImplementedErrors. I''m specifically interested in get_term_vector, but there are a number of others. Is there anything specific holding these back, or would patches to implement them be accepted? Thanks, -- Alex

Hi, I''m trying to get parallelized ferret indexing working for my AAF indices, based on the example in the O''Reilly Ferret shortcut. However, the resulting indices after merging seem to have no actual documents. I went and made minimal changes to the example in the Ferret shortcut pdf, and indeed can''t get that to work either. I''d appreciate any help

I need to get a set of terms being indexed using Ferret. I used IndexReader.terms and it returns a list of TermEnum nicely. The only problem is that my analyzer includes a stemming filter. So now, the terms I''m getting back are all stemmed. Is there anyway to get the original unstemmed terms back from the index somehow? Thanks. -- Posted via http://www.ruby-forum.com/.

I have a site with two indexes. Index A is created offline by RDig and queried from the web via RDig (specifically, RDig.searcher.search). Index B is managed by AAF with :remote => true. Simple enough. However, I need to query both indexes from RDig. Usually this is ok, as I modified RDig to accept an array of search_paths with an element for index A and index B. However, when Index

Hi, I have an index where each document contains an untokenized ''url'' field. I would like to query the index for the most popular urls. In SQL I would do this via a Group By clause. Is there anything in Ferret that will do something similar? I found this discussion that proposed a solution involving TermEnums:

Is it possible to query the index for a TermEnum for all fields in the index instead of just ? Thanks, John

Dave, thank you so much for the 0.11 release(s). You have solved many problems for me. As part of my appreciation for your good works, I am offering up for public consideration a silly little class that I wrote. (Code is below.) This class offers a simplified Hash-like interface to (a very restricted subset of) Ferret. Hence I call it FerretHash. FerretHash comes with its very own pet Ferret

We would like to show a list of "most recently added terms", meaning, the results of this query: Resource.aaf_index.ferret_index.reader.terms(:summary) BUT, only returning terms from a certain set of documents (in our case, we are going to filter by creation data). Is this possible? Thanks, John

I implemented a "reindex" command which simply creates an IndexWriter with :create => true for a prexisting index. The "reindexing" seems to start out ok, with several thousand docs added, then Ferret throws an exception: IO Error occured: couldn''t rename file "index\_0.tmp" to "index\_0.cfs": <File exists> I guess that _0.cfs is held

Hi, We have an index of around 1M web pages as part of our web app. The app uses ferret by way of RDig to perform searches. We have noticed anecdotally that some searches don''t work the way we thought they should, as if documents were missing from the index. Yesterday we came upon a concrete instance of this. Our documents have several fields, one of which is called :keywords and

Hi. I''m searching multiple indexes by passing an array of paths to Index::IndexReader.new(). I get several hits back, and can determine the document id of each. Now I want to fetch highlighted excerpts from a field in one of the matched documents. The problem I''m having is that Index::IndexReader doesn''t have a highlight() method. And, while Index::Index does

Hi, there. I need some help. Is there a way to count frequencies of terms in a document on Ferret? I know that Ferret has IndexReader#terms_docs_for method which counts all documents. I need to count frequencies of terms in a specific document. Some way?? -- Posted via http://www.ruby-forum.com/.

Hey gang, A post on the Rails forum a while back had it sound like you pretty much had to use the Index Readers & Writers if you were going to be potentially accessing an index from more than one process. (i.e. multiple dispatch.fcgi''s, etc) Is this still the case, or does the main Index class do that black magic behind the scenes? =) I was having trouble implementing the

Hi! First, thanks a LOT for ferret. The API and documentation is great. I''m trying to integrate ferret into a RoR app (DamageControl) and have run into a problem with locks. DamageControl consists of two processes that start up and run in parallel. The first one is the webapp (which is just a plain RoR app). The second is a daemon process that runs in the background. The daemon process

In the documentation, it says that optimize "should only be called when the index will no longer be updated very often, but will be read a lot". Does this mean it actually has a detrimental impact on updates and inserts? In my project there will be many more reads than updates, but there will still be a lot of updates. So should I be calling Optimize once a day or something like that,

Hey .. I was thinking about the way I need to use the Ferret::Index::Index Class and its subclasses .. i find it somehow complex .. I think this can be done more easily .. Most of the Time a user needs to open up a index to do queries, the best way would be to use a IndexReader afaik. I would suggest to do it that way: index = Ferret::Index::Index.new( :path =>

Hello! I am trying to read Ferret index files from Windows machine on my Mac G5 Leopard machine, but the following returns nil: Ferret::Index::IndexReader.new( index_paths ) Should this work? Are index files guaranteed to be platform independent or not? Is there any problem if files (top direectory) are renamed? izidor P.S. I can create the index myself and then everything works.