Hello, everyone.
I have maybe not standard question, how to use together Automaton and
SpanMultiTermQueryWrapper.
Main idea of this approach is solve some problem with search. I need search
combination of numbers on text. Combination is any numbers
[0-9]{3}-[0-9]{3}-[0-9]{3}, exclude 111 in any position.
So DFA for this will be:
Automaton full = new RegExp("[0-9]{3}.[0-9]{3}.[0-9]{3}").toAutomaton();
Automaton exclude1 = new RegExp("111.[0-9]{3}.[0-9]{3}").toAutomaton();
Automaton exclude2 = new RegExp("[0-9]{3}.111.[0-9]{3}").toAutomaton();
Automaton exclude3 = new RegExp("[0-9]{3}.[0-9]{3}.111").toAutomaton();
full = Operations.minus(full, exclude1);
full = Operations.minus(full, exclude2);
full = Operations.minus(full, exclude3);
full = MinimizationOperations.minimize(full);
Query query = new AutomatonQuery(new Term("body"), full);
This query working fine with single term like 123-456-789, but we are using
StandardAnalyzer for body, so it will be separated to 3 Terms {123, 456, 789}
and search will not work.
I want use SpanMultiTermQueryWrapper to make search terms with order using
automata rules.
Any clue?
Thanks
PS. Operations.subsetOf(Automata.makeString("123-456-789"), full); => true;
Operations.subsetOf(Automata.makeString("111-456-789"), full); => false.
TestCase for Automata works fine.
Regards,
Valentin Popov
