@Override public void writeObject(ObjectOutput output, FuzzyQuery object) throws IOException { output.writeObject(object.getTerm()); output.writeInt(object.getPrefixLength()); output.writeBoolean(object.getTranspositions()); output.writeInt(object.getMaxEdits()); output.writeInt((int) getValue(object, MAX_EXPANSIONS_FIELD)); }
FuzzyQueryInfo(String term, FuzzyQuery query) { this.term = term; this.maxEdits = query.getMaxEdits(); this.transpositions = query.getTranspositions(); this.prefixLength = query.getPrefixLength(); }
int prefixLength = Math.min(fq.getPrefixLength(), termLength); String suffix = UnicodeUtil.newString(termText, prefixLength, termText.length - prefixLength); LevenshteinAutomata builder = new LevenshteinAutomata(suffix, fq.getTranspositions()); String prefix = UnicodeUtil.newString(termText, 0, prefixLength); Automaton automaton = builder.toAutomaton(fq.getMaxEdits(), prefix);
protected void flattenQuery(FuzzyQuery query, float pathBoost, Object sourceOverride, IndexReader reader, Callback callback) { float boost = pathBoost; if (query.getMaxEdits() == 0) { callback.flattened(query.getTerm().bytes(), boost, sourceOverride); } String term = query.getTerm().bytes().utf8ToString(); if (query.getPrefixLength() >= term.length()) { callback.flattened(query.getTerm().bytes(), boost, sourceOverride); return; } FuzzyQueryInfo key = new FuzzyQueryInfo(term, query); if (!sentAutomata.add(key)) { return; } // Make an effort to resolve the fuzzy query to an automata String fuzzed = term.substring(query.getPrefixLength()); int editDistance = query.getMaxEdits(); if (editDistance > LevenshteinAutomata.MAXIMUM_SUPPORTED_DISTANCE) { editDistance = LevenshteinAutomata.MAXIMUM_SUPPORTED_DISTANCE; } LevenshteinAutomata automata = new LevenshteinAutomata(fuzzed, query.getTranspositions()); Automaton automaton = automata.toAutomaton(editDistance); if (query.getPrefixLength() > 0) { Automaton prefix = Automata.makeString(term.substring(0, query.getPrefixLength())); automaton = Operations.concatenate(prefix, automaton); } Object source = sourceOverride == null ? key : sourceOverride; callback.flattened(automaton, boost, source.hashCode()); }