Examples of com.flaptor.org.apache.lucene.util.BytesRef

  
  // TODO: this currently requites a determinized machine,
  // but it need not -- we can speed it up by walking the
  // NFA instead.  it'd still be fail fast.
  public static BytesRef getCommonPrefixBytesRef(Automaton a) {
    if (a.isSingleton()) return new BytesRef(a.singleton);
    BytesRef ref = new BytesRef(10);
    HashSet<State> visited = new HashSet<State>();
    State s = a.initial;
    boolean done;
    do {
      done = true;
      visited.add(s);
      if (!s.accept && s.numTransitions() == 1) {
        Transition t = s.getTransitions().iterator().next();
        if (t.min == t.max && !visited.contains(t.to)) {
          ref.grow(++ref.length);
          ref.bytes[ref.length - 1] = (byte)t.min;
          s = t.to;
          done = false;
        }
      }

    return new StringBuilder(SpecialOperations.getCommonPrefix(r)).reverse().toString();
  }
  
  public static BytesRef getCommonSuffixBytesRef(Automaton a) {
    if (a.isSingleton()) // if singleton, the suffix is the string itself.
      return new BytesRef(a.singleton);
    
    // reverse the language of the automaton, then reverse its common prefix.
    Automaton r = a.clone();
    reverse(r);
    r.determinize();
    BytesRef ref = SpecialOperations.getCommonPrefixBytesRef(r);
    reverseBytes(ref);
    return ref;
  }

Related Classes of com.flaptor.org.apache.lucene.util.BytesRef

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