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From Ray Tsang <saturn...@gmail.com>
Subject Re: Why is delete() part of IndexREADER?
Date Tue, 23 Aug 2005 09:12:03 GMT
I have come to peace with this problem.  Basically, I think it's
because you need to read/find what you are deleting first? hehe

Writer just need to write whatever it's been told to write.

ray,

On 8/23/05, Mikko Noromaa <mikko@noromaa.fi> wrote:
> Hi,
> 
> Why IndexReader allows me to do write-operations like delete? I'd think this
> should be part of the IndexWriter class instead.
> 
> I had created a wrapper class that callers can open for either writing or
> searching. It creates either an IndexWriter or an IndexSearches and stores
> that inside itself for later use in methods like MyAddDocument and MySearch.
> Implementation of MyUpdateDocument, however, became very ugly:
> 
> // Open the index for "reading" first.
> writer.close();
> reader = IndexReader.open(CurrentIndexPath);
> 
> // Delete the requested document.
> reader.delete(new Term("id", String.valueOf(ID)));
> reader.close();
> 
> // Re-open the IndexWriter.
> writer = new IndexWriter(CurrentIndexPath, analyzer, false);
> 
> // Add the new document through normal add-logic.
> DoAddDocument (DocText, ID);
> 
> 
> Could the delete() method be moved from IndexReader to IndexWriter? Or
> perhaps IndexWriter should implement IndexReader, so delete() would be
> callable on IndexWriter as well?
> 
> --
> 
> Mikko Noromaa (mikko@noromaa.fi) - tel. +358 40 7348034
> Noromaa Solutions - see http://www.nm-sol.com/
> 
> 
> 
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