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From Ian Lea <ian....@gmail.com>
Subject Re: Creating Indexes when data inside the file is being written.
Date Tue, 13 Aug 2013 08:31:35 GMT
If I've understood your question correctly, the answer is yes.
Assuming the input data is coming from another file the flow will be
along the lines of

.  Open input file for reading
.  Open output file for writing
.  Open (or create) lucene index

.  For each input record
-   write to output file
-   add to lucene

Then at the end close the files and the index and you're done.


--
Ian.


On Tue, Aug 13, 2013 at 9:16 AM, Jugal Kolariya
<jugal.kolariya@rancoretech.com> wrote:
> That only answer my 2nd part.
>
> My most important question still remains.
>
> "
>
> In my code case, I am creating a new file and writing data to that file.
>
> Now, when the file writing is in progress, I would like to create Lucene
> Indexes. Once indexes are created, I can then perform operation on the
> indexes.
>
> I want to know whether I can create indexes for the file on which the data
> is still being getting written from the code.
>
> "
>
> Is it possible to create indexes of a file, data in which is still getting
> written...
>
> Any guidance will be highly appreciated.
>
>
> On 12-08-2013 PM 10:46, Michael McCandless wrote:
>>
>> You'll have to periodically re-index that document, if it's content is
>> constantly changing.
>>
>> Alternatively, it's possible to index sub-documents so that each new
>> "chunk" of content added because a new document, and then you join or
>> group the results back into a single document ...
>>
>> Mike McCandless
>>
>> http://blog.mikemccandless.com
>>
>>
>> On Mon, Aug 12, 2013 at 9:47 AM, Jugal Kolariya
>> <jugal.kolariya@rancoretech.com> wrote:
>>>
>>> Hello,
>>>            I have a potential usecase for which I am not sure whether
>>> using
>>> lucene will help me or not.
>>>
>>> In my code case, I am creating a new file and writing data to that file.
>>>
>>> Now, when the file writing is in progress, I would like to create Lucene
>>> Indexes. Once indexes are created, I can then perform operation on the
>>> indexes.
>>>
>>> I want to know whether I can create indexes for the file on which the
>>> data
>>> is still being getting written from the code.
>>>
>>> If yes, what about the incremental changes which happen in file. Those
>>> details wont be captured in the indexes. Does this effectively means
>>> everytime I try to perform a search I will first create index and then
>>> perform search operation.
>>>
>>> Any guidance on this will be highly appreciated. Javadoc does not seem to
>>> provide relevant information on this. Lucene version is 4.4.0
>>> --
>>>
>>>
>>>         Thanks & regards
>>>         /Jugal Kishore Kolariya
>>>         /
>>>
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>>
>
>
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