On Feb 3, 2005, at 9:26 AM, Owen Densmore wrote:
Is this the right way to make a porter analyzer using the standard tokenizer? I'm not sure about the order of the filters.
Owen
class MyAnalyzer extends Analyzer { public TokenStream tokenStream(String fieldName, Reader reader) { return new PorterStemFilter( new StopFilter( new LowerCaseFilter( new StandardFilter( new StandardTokenizer(reader))), StopAnalyzer.ENGLISH_STOP_WORDS)); } }
Yes, that is correct.
Analysis starts with a tokenizer, and chains the output of that to the next filter and so on.
I strongly recommend, as you start tinkering with custom analysis, to use a little bit of code to see how your analyzer works on some text. The Lucene Intro article I wrote for java.net has some code you can borrow to do this, as does Lucene in Action's source code. Also, Luke has this capability - which is a tool I also highly recommend.
Erik
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