I want my search to treat 'No. 1' and 'No.1' the same, because in our
context its one token I want 'No. 1' to become 'No.1', I need to do
this before tokenizing because the tokenizer would split one value into
two terms and one into just one term. I already use a NormalizeMapFilter
to map &' to 'and' but I think it only takes literal text and I need to
1. be case insensitive (but lowercasefilter is only applied after
tokenizing)
2. cope with all numbers e.g no. 109
So I was going to subclass BaseCharFilter and do my matches with a
regular expression like ([Nn]+[Oo]+\\.) ([0-9]+) but I'm struggling to
understand the offset methods you have to do once you get a match. Has
anyone already got a regular expression Charfilter OR am I approaching
this all wrong
thanks Paul
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