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From Amin Mohammed-Coleman <ami...@gmail.com>
Subject Re: Lucene Highlighting and Dynamic Summaries
Date Thu, 12 Mar 2009 21:57:22 GMT
I did the following:

highlighter.setMaxDocCharsToAnalyze(Integer.MAX_VALUE);


which works.

On Thu, Mar 12, 2009 at 6:41 PM, Amin Mohammed-Coleman <aminmc@gmail.com>wrote:

> JIRA updated.  Includes new testcase which shows highlighter not working as
> expected.
>
>
> On Thu, Mar 12, 2009 at 5:56 PM, Amin Mohammed-Coleman <aminmc@gmail.com>wrote:
>
>> Hi
>>
>> I have found that it is not issue with POI. I extracted text using PoI but
>> differenlty and the term is extracted properly.  When I store the text and
>> retrieve it the term exists. However running the text through highlighter
>> doesn't work
>>
>> I will post test case with plain text file on JIRA. Currently on a cramped
>> train!
>>
>> Cheers
>>
>>
>>
>> On 11 Mar 2009, at 18:11, markharw00d <markharw00d@yahoo.co.uk> wrote:
>>
>>  If you can supply a Junit test that recreates the problem I think we can
>>> start to make progress on this.
>>>
>>>
>>>
>>> Amin Mohammed-Coleman wrote:
>>>
>>>> Hi
>>>>
>>>> Apologies for re sending this mail. Just wondering if anyone has
>>>> experienced the below. I'm not sure if this could happen due nature of
>>>> document. It does seem strange one term search returns summary while another
>>>> does not even though same document is being returned.
>>>>
>>>> I'm asking this so I can code around this if is normal.
>>>>
>>>>
>>>> Apologies again for re sending this mail
>>>>
>>>> Cheers
>>>>
>>>> Amin
>>>>
>>>> Sent from my iPhone
>>>>
>>>> On 9 Mar 2009, at 07:50, Amin Mohammed-Coleman <aminmc@gmail.com>
>>>> wrote:
>>>>
>>>>  Hi
>>>>>
>>>>> I am seeing some strange behaviour with the highlighter and I'm
>>>>> wondering if anyone else is experiencing this.  In certain instances
I don't
>>>>> get a summary being generated.  I perform the search and the search returns
>>>>> the correct document.  I can see that the lucene document contains the
text
>>>>> in the field.  However after doing:
>>>>>
>>>>>   SimpleHTMLFormatter simpleHTMLFormatter = new
>>>>> SimpleHTMLFormatter("<span class=\"highlight\"><b>", "</b></span>");
>>>>>           //required for highlighting
>>>>>           Query query2 = multiSearcher.rewrite(query);
>>>>>           Highlighter highlighter = new
>>>>> Highlighter(simpleHTMLFormatter, new QueryScorer(query2));
>>>>> ...
>>>>>
>>>>> String text= doc.get(FieldNameEnum.BODY.getDescription());
>>>>>               TokenStream tokenStream =
>>>>> analyzer.tokenStream(FieldNameEnum.BODY.getDescription(), new
>>>>> StringReader(text));
>>>>>               String result = highlighter.getBestFragments(tokenStream,
>>>>> text, 3, "...");
>>>>>
>>>>>
>>>>> the string result is empty.  This is very strange, if i try a different
>>>>> term that exists in the document then I get a summary.  For example I
have a
>>>>> word document that contains the term "document" and "aspectj".  If I
search
>>>>> for "document" I get the correct document but no highlighted summary.
>>>>>  However if I search using "aspectj" I get the same doucment with
>>>>> highlighted summary.
>>>>>
>>>>> Just to mentioned I do rewrite the original query before performing the
>>>>> highlighting.
>>>>>
>>>>> I'm not sure what i'm missing here.  Any help would be appreciated.
>>>>>
>>>>> Cheers
>>>>> Amin
>>>>>
>>>>> On Sat, Mar 7, 2009 at 4:32 PM, Amin Mohammed-Coleman <
>>>>> aminmc@gmail.com> wrote:
>>>>> Hi
>>>>>
>>>>> Got it working!  Thanks again for your help!
>>>>>
>>>>>
>>>>> Amin
>>>>>
>>>>>
>>>>> On Sat, Mar 7, 2009 at 12:25 PM, Amin Mohammed-Coleman <
>>>>> aminmc@gmail.com> wrote:
>>>>> Thanks!  The final piece that I needed to do for the project!
>>>>>
>>>>> Cheers
>>>>>
>>>>> Amin
>>>>>
>>>>> On Sat, Mar 7, 2009 at 12:21 PM, Uwe Schindler <uwe@thetaphi.de>
>>>>> wrote:
>>>>> > cool.  i will use compression and store in index. is there anything
>>>>> > special
>>>>> > i need to for decompressing the text? i presume i can just do
>>>>> > doc.get("content")?
>>>>> > thanks for your advice all!
>>>>>
>>>>> No just use Field.Store.COMPRESS when adding to index and
>>>>> Document.get()
>>>>> when fetching. The decompression is automatically done.
>>>>>
>>>>> You may think, why not enable compression for all fields? The case is,
>>>>> that
>>>>> this is an overhead for very small and short fields. So you should only
>>>>> use
>>>>> it for large contents (it's the same like compressing very small files
>>>>> as
>>>>> ZIP/GZIP: These files mostly get larger than without compression).
>>>>>
>>>>> Uwe
>>>>>
>>>>>
>>>>> ---------------------------------------------------------------------
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>>>>> For additional commands, e-mail: java-user-help@lucene.apache.org
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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>>>>
>>>>
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>>>>
>>>>
>>>
>>>
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>>>
>>>
>

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