How to use

createLooping

method

in

org.apache.flink.cep.nfa.compiler.NFACompiler$NFAFactoryCompiler

private State<T> convertPattern(final State<T> sinkState) {
  final State<T> lastSink;
  final Quantifier quantifier = currentPattern.getQuantifier();
  if (quantifier.hasProperty(Quantifier.QuantifierProperty.LOOPING)) {
    // if loop has started then all notPatterns previous to the optional states are no longer valid
    final State<T> sink = copyWithoutTransitiveNots(sinkState);
    final State<T> looping = createLooping(sink);
    if (!quantifier.hasProperty(Quantifier.QuantifierProperty.OPTIONAL)) {
      lastSink = createInitMandatoryStateOfOneOrMore(looping);
    } else {
      lastSink = createInitOptionalStateOfZeroOrMore(looping, sinkState);
    }
  } else if (quantifier.hasProperty(Quantifier.QuantifierProperty.TIMES)) {
    lastSink = createTimesState(sinkState, currentPattern.getTimes());
  } else {
    lastSink = createSingletonState(sinkState);
  }
  addStopStates(lastSink);
  return lastSink;
}

private State<T> convertPattern(final State<T> sinkState) {
  final State<T> lastSink;
  final Quantifier quantifier = currentPattern.getQuantifier();
  if (quantifier.hasProperty(Quantifier.QuantifierProperty.LOOPING)) {
    // if loop has started then all notPatterns previous to the optional states are no longer valid
    setCurrentGroupPatternFirstOfLoop(false);
    final State<T> sink = copyWithoutTransitiveNots(sinkState);
    final State<T> looping = createLooping(sink);
    setCurrentGroupPatternFirstOfLoop(true);
    lastSink = createTimesState(looping, sinkState, currentPattern.getTimes());
  } else if (quantifier.hasProperty(Quantifier.QuantifierProperty.TIMES)) {
    lastSink = createTimesState(sinkState, sinkState, currentPattern.getTimes());
  } else {
    lastSink = createSingletonState(sinkState);
  }
  addStopStates(lastSink);
  return lastSink;
}

private State<T> convertPattern(final State<T> sinkState) {
  final State<T> lastSink;
  final Quantifier quantifier = currentPattern.getQuantifier();
  if (quantifier.hasProperty(Quantifier.QuantifierProperty.LOOPING)) {
    // if loop has started then all notPatterns previous to the optional states are no longer valid
    setCurrentGroupPatternFirstOfLoop(false);
    final State<T> sink = copyWithoutTransitiveNots(sinkState);
    final State<T> looping = createLooping(sink);
    setCurrentGroupPatternFirstOfLoop(true);
    lastSink = createTimesState(looping, sinkState, currentPattern.getTimes());
  } else if (quantifier.hasProperty(Quantifier.QuantifierProperty.TIMES)) {
    lastSink = createTimesState(sinkState, sinkState, currentPattern.getTimes());
  } else {
    lastSink = createSingletonState(sinkState);
  }
  addStopStates(lastSink);
  return lastSink;
}

private State<T> convertPattern(final State<T> sinkState) {
  final State<T> lastSink;
  final Quantifier quantifier = currentPattern.getQuantifier();
  if (quantifier.hasProperty(Quantifier.QuantifierProperty.LOOPING)) {
    // if loop has started then all notPatterns previous to the optional states are no longer valid
    setCurrentGroupPatternFirstOfLoop(false);
    final State<T> sink = copyWithoutTransitiveNots(sinkState);
    final State<T> looping = createLooping(sink);
    setCurrentGroupPatternFirstOfLoop(true);
    lastSink = createTimesState(looping, sinkState, currentPattern.getTimes());
  } else if (quantifier.hasProperty(Quantifier.QuantifierProperty.TIMES)) {
    lastSink = createTimesState(sinkState, sinkState, currentPattern.getTimes());
  } else {
    lastSink = createSingletonState(sinkState);
  }
  addStopStates(lastSink);
  return lastSink;
}