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From Ahmet Arslan <iori...@yahoo.com.INVALID>
Subject Re: Preprocess input text before tokenizing
Date Fri, 24 Jun 2016 12:25:35 GMT
Hi Jaime,

Please see o.a.l.analysis.custom.CustomAnalyzer.builder() to create custom analyzers using
a builder-style API.

Ahmet


On Friday, June 24, 2016 10:54 AM, Jaime <j.pardos@estructure.es> wrote:
Thank you very much, that seems to solve my issue.

However, I find this a little cumbersome. I need to filter the text 
before any tokenizing takes place, so I have to implement a filtered 
version of every analyzer I'm using (StandardAnalyzer and 
SpanishAnalyzer and a custom analyzer right now).

If I need to support another analyzer in the future (a very plausible 
possibility) I will need to create another version of that analyzer. 
Whenever any of those analyzer is changed, I will need to manually apply 
the changes.

Isn't there a better way to do this?

El 23/06/2016 a las 20:28, Ahmet Arslan escribió:
> Hi,
>
> Zero or more CharFilter(s) is the way to manipulate text before the tokenizer.
> I think init reader is the method you want to plug char filters.
> https://github.com/apache/lucene-solr/blob/master/lucene/analysis/morfologik/src/java/org/apache/lucene/analysis/uk/UkrainianMorfologikAnalyzer.java
>
> Ahmet
>
> On Thursday, June 23, 2016 6:47 PM, Jaime <j.pardos@estructure.es> wrote:
> Hello,
>
> I want to change the input text before tokenizing. I think I just need
> to use some characters as word separators, and maybe remove some others
> completely.
>
> I was planning to use MappingCharFilterFactory to replace some chars
> with " " and others with "", but I feel like I'm not in the right track.
>
> First, I've implemented a custom analyzer to use my custom tokenizer. My
> idea was to inherit from StandardTokenizer and, in setReader, calling
> MappingCharFilterFactory.create(reader) from within.
>
> However, setReader is final, so I can't override it.
>
> Is there a better way to do this?
> In any case, how should I use MappingCharFilter in case I really needed it?
>
>
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-- 
Jaime Pardos
ESTRUCTURE MEDIA SYSTEMS, S.L.
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j.pardos@estructure.es
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