Is there any general way of getting/looking what attributes a token stream has?
I want to use spell checker with a query analyzer, which the analyzer generates
ReadingAttribute for each tokens, and I want to use the ReadingAttributes for
spell checking. I think I can have my own SpellingQueryConverter extension to
override analyze method, but I saw the TODO comment in SpellingQueryConverter:
protected void analyze(Collection<Token> result, Reader text, int offset)
throws IOException {
TokenStream stream = analyzer.reusableTokenStream("", text);
// TODO: support custom attributes
CharTermAttribute termAtt = stream.addAttribute(CharTermAttribute.class);
FlagsAttribute flagsAtt = stream.addAttribute(FlagsAttribute.class);
TypeAttribute typeAtt = stream.addAttribute(TypeAttribute.class);
PayloadAttribute payloadAtt = stream.addAttribute(PayloadAttribute.class);
PositionIncrementAttribute posIncAtt =
stream.addAttribute(PositionIncrementAttribute.class);
OffsetAttribute offsetAtt = stream.addAttribute(OffsetAttribute.class);
:
If we can have a general way of getting such information, I think it would be
helpful
not only for spell checking. (For example, SynonymFilter can add
PartOfSpeechAttribute
if the original token has.)
koji
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