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From Filip Anselm <fi...@nable.dk>
Subject Re: How do I avoid reindexing?
Date Sun, 11 Sep 2005 18:44:00 GMT
I haven't had much time to look through the lucene documentation - but
still: How could I miss that! DOH - hehe
Much easier than starting from scratch... ;)

Thanks to all of you!


Erik Hatcher wrote:

>
> On Sep 11, 2005, at 6:03 AM, Filip Anselm wrote:
>
>> I'm completely new to lucene, but could figure out myself that I 
>> need to
>> delete the old doc and add the new... But as I see it, the only way to
>> delete a document is to create an implementation of the abstract
>> IndexReader and use its delete(Term term) method. In my case this 
>> sounds
>> like overkill... - Is there an other way?
>
>
> IndexReader is abstract, but there are some concrete subclasses under 
> the covers.  To get an instance, use one of the .open() static 
> methods on that class.
>
>     Erik
>
>
>>
>>
>> Mikko Noromaa wrote:
>>
>>
>>> Hi,
>>>
>>>
>>>
>>>
>>>> delete document with this id and then add document with the same id.
>>>>
>>>>
>>>>
>>>
>>> Yes, this is clearly the way to go. I implemented a similar 
>>> application
>>> myself. However, earlier I stored my ID as a binary field to save 
>>> space,
>>> because I only ever needed to read the value from a found  document.
>>> With the
>>> update logic added, I had to store the ID as text so that Lucene 
>>> can search
>>> for the document to delete.
>>>
>>> This was annoying because in my application updates are very rare, 
>>> but the
>>> possibility must be there. Storing numbers as text doesn't sound like
>>> something a modern application does.
>>>
>>> So, if it hasn't been asked for before, here comes: It would be 
>>> nice if
>>> Lucene could search by binary fields.
>>>
>>> -- 
>>>
>>> Mikko Noromaa (mikko@noromaa.fi) - tel. +358 40 7348034
>>> Noromaa Solutions - see http://www.nm-sol.com/
>>>
>>>
>>>
>>>
>>>
>>>> -----Original Message-----
>>>> From: jian chen [mailto:chenjian1227@gmail.com]
>>>> Sent: Sunday, September 11, 2005 2:24 AM
>>>> To: java-user@lucene.apache.org
>>>> Subject: Re: How do I avoid reindexing?
>>>>
>>>>
>>>> delete document with this id and then add document with the same id.
>>>>
>>>> Jian
>>>>
>>>> On 9/10/05, Filip Anselm <filip@nable.dk> wrote:
>>>>
>>>>
>>>>
>>>>> ...well the title says it all
>>>>>
>>>>> I index some documents - all with the same fields... One of
>>>>>
>>>>>
>>>>>
>>>> the fields,
>>>>
>>>>
>>>>
>>>>> "id" is unique for the indexed documents. If i try to index
>>>>>
>>>>>
>>>>>
>>>> a document
>>>>
>>>>
>>>>
>>>>> with an id, that is already indexed - the old document
>>>>>
>>>>>
>>>>>
>>>> should be updated
>>>>
>>>>
>>>>
>>>>> or replaced with the new document, so that I avoid indexed  documents
>>>>> with the same id. How is the best way to do this?
>>>>>
>>>>> thanks
>>>>>
>>>>> - Filip
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>> -------------------------------------------------------------------- -
>>>>
>>>>
>>>>
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>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>
>>>
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>>>
>>>
>>>
>>>
>>>
>>
>>
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>>
>
>
> ---------------------------------------------------------------------
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>
>


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