Java Code Examples for org.apache.flink.cep.pattern.GroupPattern#getRawPattern()

The following examples show how to use org.apache.flink.cep.pattern.GroupPattern#getRawPattern() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: NFACompiler.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
/**
 * Create the states for the group pattern as a looping one.
 *
 * @param groupPattern the group pattern to create the states for
 * @param sinkState the state that the group pattern being converted should point to
 * @return the first state of the states of the group pattern
 */
private State<T> createLoopingGroupPatternState(
	final GroupPattern<T, ?> groupPattern,
	final State<T> sinkState) {
	final IterativeCondition<T> proceedCondition = getTrueFunction();

	Pattern<T, ?> oldCurrentPattern = currentPattern;
	Pattern<T, ?> oldFollowingPattern = followingPattern;
	GroupPattern<T, ?> oldGroupPattern = currentGroupPattern;

	final State<T> dummyState = createState(currentPattern.getName(), State.StateType.Normal);
	State<T> lastSink = dummyState;
	currentGroupPattern = groupPattern;
	currentPattern = groupPattern.getRawPattern();
	lastSink = createMiddleStates(lastSink);
	lastSink = convertPattern(lastSink);
	lastSink.addProceed(sinkState, proceedCondition);
	dummyState.addProceed(lastSink, proceedCondition);
	currentPattern = oldCurrentPattern;
	followingPattern = oldFollowingPattern;
	currentGroupPattern = oldGroupPattern;
	return lastSink;
}
Example 2
Source File: NFACompiler.java    From flink with Apache License 2.0 6 votes vote down vote up 
/**
 * Create the states for the group pattern as a looping one.
 *
 * @param groupPattern the group pattern to create the states for
 * @param sinkState the state that the group pattern being converted should point to
 * @return the first state of the states of the group pattern
 */
private State<T> createLoopingGroupPatternState(
	final GroupPattern<T, ?> groupPattern,
	final State<T> sinkState) {
	final IterativeCondition<T> proceedCondition = getTrueFunction();

	Pattern<T, ?> oldCurrentPattern = currentPattern;
	Pattern<T, ?> oldFollowingPattern = followingPattern;
	GroupPattern<T, ?> oldGroupPattern = currentGroupPattern;

	final State<T> dummyState = createState(currentPattern.getName(), State.StateType.Normal);
	State<T> lastSink = dummyState;
	currentGroupPattern = groupPattern;
	currentPattern = groupPattern.getRawPattern();
	lastSink = createMiddleStates(lastSink);
	lastSink = convertPattern(lastSink);
	lastSink.addProceed(sinkState, proceedCondition);
	dummyState.addProceed(lastSink, proceedCondition);
	currentPattern = oldCurrentPattern;
	followingPattern = oldFollowingPattern;
	currentGroupPattern = oldGroupPattern;
	return lastSink;
}
Example 3
Source File: NFACompiler.java    From flink with Apache License 2.0 6 votes vote down vote up 
/**
 * Create the states for the group pattern as a looping one.
 *
 * @param groupPattern the group pattern to create the states for
 * @param sinkState the state that the group pattern being converted should point to
 * @return the first state of the states of the group pattern
 */
private State<T> createLoopingGroupPatternState(
	final GroupPattern<T, ?> groupPattern,
	final State<T> sinkState) {
	final IterativeCondition<T> proceedCondition = getTrueFunction();

	Pattern<T, ?> oldCurrentPattern = currentPattern;
	Pattern<T, ?> oldFollowingPattern = followingPattern;
	GroupPattern<T, ?> oldGroupPattern = currentGroupPattern;

	final State<T> dummyState = createState(currentPattern.getName(), State.StateType.Normal);
	State<T> lastSink = dummyState;
	currentGroupPattern = groupPattern;
	currentPattern = groupPattern.getRawPattern();
	lastSink = createMiddleStates(lastSink);
	lastSink = convertPattern(lastSink);
	lastSink.addProceed(sinkState, proceedCondition);
	dummyState.addProceed(lastSink, proceedCondition);
	currentPattern = oldCurrentPattern;
	followingPattern = oldFollowingPattern;
	currentGroupPattern = oldGroupPattern;
	return lastSink;
}
Example 4
Source File: NFACompiler.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
/**
 * Create all the states for the group pattern.
 *
 * @param groupPattern the group pattern to create the states for
 * @param sinkState the state that the group pattern being converted should point to
 * @param proceedState the state that the group pattern being converted should proceed to
 * @param isOptional whether the group pattern being converted is optional
 * @return the first state of the states of the group pattern
 */
private State<T> createGroupPatternState(
	final GroupPattern<T, ?> groupPattern,
	final State<T> sinkState,
	final State<T> proceedState,
	final boolean isOptional) {
	final IterativeCondition<T> proceedCondition = getTrueFunction();

	Pattern<T, ?> oldCurrentPattern = currentPattern;
	Pattern<T, ?> oldFollowingPattern = followingPattern;
	GroupPattern<T, ?> oldGroupPattern = currentGroupPattern;

	State<T> lastSink = sinkState;
	currentGroupPattern = groupPattern;
	currentPattern = groupPattern.getRawPattern();
	lastSink = createMiddleStates(lastSink);
	lastSink = convertPattern(lastSink);
	if (isOptional) {
		// for the first state of a group pattern, its PROCEED edge should point to
		// the following state of that group pattern
		lastSink.addProceed(proceedState, proceedCondition);
	}
	currentPattern = oldCurrentPattern;
	followingPattern = oldFollowingPattern;
	currentGroupPattern = oldGroupPattern;
	return lastSink;
}
Example 5
Source File: NFACompiler.java    From flink with Apache License 2.0 5 votes vote down vote up 
/**
 * Create all the states for the group pattern.
 *
 * @param groupPattern the group pattern to create the states for
 * @param sinkState the state that the group pattern being converted should point to
 * @param proceedState the state that the group pattern being converted should proceed to
 * @param isOptional whether the group pattern being converted is optional
 * @return the first state of the states of the group pattern
 */
private State<T> createGroupPatternState(
	final GroupPattern<T, ?> groupPattern,
	final State<T> sinkState,
	final State<T> proceedState,
	final boolean isOptional) {
	final IterativeCondition<T> proceedCondition = getTrueFunction();

	Pattern<T, ?> oldCurrentPattern = currentPattern;
	Pattern<T, ?> oldFollowingPattern = followingPattern;
	GroupPattern<T, ?> oldGroupPattern = currentGroupPattern;

	State<T> lastSink = sinkState;
	currentGroupPattern = groupPattern;
	currentPattern = groupPattern.getRawPattern();
	lastSink = createMiddleStates(lastSink);
	lastSink = convertPattern(lastSink);
	if (isOptional) {
		// for the first state of a group pattern, its PROCEED edge should point to
		// the following state of that group pattern
		lastSink.addProceed(proceedState, proceedCondition);
	}
	currentPattern = oldCurrentPattern;
	followingPattern = oldFollowingPattern;
	currentGroupPattern = oldGroupPattern;
	return lastSink;
}
Example 6
Source File: NFACompiler.java    From flink with Apache License 2.0 5 votes vote down vote up 
/**
 * Create all the states for the group pattern.
 *
 * @param groupPattern the group pattern to create the states for
 * @param sinkState the state that the group pattern being converted should point to
 * @param proceedState the state that the group pattern being converted should proceed to
 * @param isOptional whether the group pattern being converted is optional
 * @return the first state of the states of the group pattern
 */
private State<T> createGroupPatternState(
	final GroupPattern<T, ?> groupPattern,
	final State<T> sinkState,
	final State<T> proceedState,
	final boolean isOptional) {
	final IterativeCondition<T> proceedCondition = getTrueFunction();

	Pattern<T, ?> oldCurrentPattern = currentPattern;
	Pattern<T, ?> oldFollowingPattern = followingPattern;
	GroupPattern<T, ?> oldGroupPattern = currentGroupPattern;

	State<T> lastSink = sinkState;
	currentGroupPattern = groupPattern;
	currentPattern = groupPattern.getRawPattern();
	lastSink = createMiddleStates(lastSink);
	lastSink = convertPattern(lastSink);
	if (isOptional) {
		// for the first state of a group pattern, its PROCEED edge should point to
		// the following state of that group pattern
		lastSink.addProceed(proceedState, proceedCondition);
	}
	currentPattern = oldCurrentPattern;
	followingPattern = oldFollowingPattern;
	currentGroupPattern = oldGroupPattern;
	return lastSink;
}