/** * Tear-down method for the NFA. */ public void close() throws Exception { for (State<T> state : getStates()) { for (StateTransition<T> transition : state.getStateTransitions()) { IterativeCondition condition = transition.getCondition(); FunctionUtils.closeFunction(condition); } } }
for (StateTransition<?> transition : currentState.getStateTransitions()) { if (transition.getAction() == StateTransitionAction.PROCEED) { if (transition.getTargetState().isFinal()) {
private State<T> findFinalStateAfterProceed( ConditionContext context, State<T> state, T event) { final Stack<State<T>> statesToCheck = new Stack<>(); statesToCheck.push(state); try { while (!statesToCheck.isEmpty()) { final State<T> currentState = statesToCheck.pop(); for (StateTransition<T> transition : currentState.getStateTransitions()) { if (transition.getAction() == StateTransitionAction.PROCEED && checkFilterCondition(context, transition.getCondition(), event)) { if (transition.getTargetState().isFinal()) { return transition.getTargetState(); } else { statesToCheck.push(transition.getTargetState()); } } } } } catch (Exception e) { throw new FlinkRuntimeException("Failure happened in filter function.", e); } return null; }
/** * Initialization method for the NFA. It is called before any element is passed and thus suitable for one time setup * work. * @param cepRuntimeContext runtime context of the enclosing operator * @param conf The configuration containing the parameters attached to the contract. */ public void open(RuntimeContext cepRuntimeContext, Configuration conf) throws Exception { for (State<T> state : getStates()) { for (StateTransition<T> transition : state.getStateTransitions()) { IterativeCondition condition = transition.getCondition(); FunctionUtils.setFunctionRuntimeContext(condition, cepRuntimeContext); FunctionUtils.openFunction(condition, conf); } } }
private void updateWithGreedyCondition( State<T> state, IterativeCondition<T> takeCondition) { for (StateTransition<T> stateTransition : state.getStateTransitions()) { stateTransition.setCondition( new RichAndCondition<>(stateTransition.getCondition(), new RichNotCondition<>(takeCondition))); } } }
Collection<StateTransition<T>> stateTransitions = currentState.getStateTransitions();
private <T> Set<Tuple2<String, StateTransitionAction>> unfoldTransitions(final State<T> state) { final Set<Tuple2<String, StateTransitionAction>> transitions = new HashSet<>(); for (StateTransition<T> transition : state.getStateTransitions()) { transitions.add(Tuple2.of( transition.getTargetState().getName(), transition.getAction())); } return transitions; }
private State<T> copy(final State<T> state) { final State<T> copyOfState = createState( NFAStateNameHandler.getOriginalNameFromInternal(state.getName()), state.getStateType()); for (StateTransition<T> tStateTransition : state.getStateTransitions()) { copyOfState.addStateTransition( tStateTransition.getAction(), tStateTransition.getTargetState().equals(tStateTransition.getSourceState()) ? copyOfState : tStateTransition.getTargetState(), tStateTransition.getCondition()); } return copyOfState; }
for (StateTransition<T> tStateTransition : sinkState.getStateTransitions()) {
State<Event> endingState = stateMap.get(NFACompiler.ENDING_STATE_NAME); assertTrue(endingState.isFinal()); assertEquals(0, endingState.getStateTransitions().size());
private State<T> findFinalStateAfterProceed(State<T> state, T event, ComputationState<T> computationState) { final Stack<State<T>> statesToCheck = new Stack<>(); statesToCheck.push(state); try { while (!statesToCheck.isEmpty()) { final State<T> currentState = statesToCheck.pop(); for (StateTransition<T> transition : currentState.getStateTransitions()) { if (transition.getAction() == StateTransitionAction.PROCEED && checkFilterCondition(computationState, transition.getCondition(), event)) { if (transition.getTargetState().isFinal()) { return transition.getTargetState(); } else { statesToCheck.push(transition.getTargetState()); } } } } } catch (Exception e) { throw new RuntimeException("Failure happened in filter function.", e); } return null; }
for (StateTransition<?> transition : currentState.getStateTransitions()) { if (transition.getAction() == StateTransitionAction.PROCEED) { if (transition.getTargetState().isFinal()) {
private State<T> findFinalStateAfterProceed( ConditionContext<T> context, State<T> state, T event) { final Stack<State<T>> statesToCheck = new Stack<>(); statesToCheck.push(state); try { while (!statesToCheck.isEmpty()) { final State<T> currentState = statesToCheck.pop(); for (StateTransition<T> transition : currentState.getStateTransitions()) { if (transition.getAction() == StateTransitionAction.PROCEED && checkFilterCondition(context, transition.getCondition(), event)) { if (transition.getTargetState().isFinal()) { return transition.getTargetState(); } else { statesToCheck.push(transition.getTargetState()); } } } } } catch (Exception e) { throw new FlinkRuntimeException("Failure happened in filter function.", e); } return null; }
private State<T> findFinalStateAfterProceed( ConditionContext<T> context, State<T> state, T event) { final Stack<State<T>> statesToCheck = new Stack<>(); statesToCheck.push(state); try { while (!statesToCheck.isEmpty()) { final State<T> currentState = statesToCheck.pop(); for (StateTransition<T> transition : currentState.getStateTransitions()) { if (transition.getAction() == StateTransitionAction.PROCEED && checkFilterCondition(context, transition.getCondition(), event)) { if (transition.getTargetState().isFinal()) { return transition.getTargetState(); } else { statesToCheck.push(transition.getTargetState()); } } } } } catch (Exception e) { throw new FlinkRuntimeException("Failure happened in filter function.", e); } return null; }
Collection<StateTransition<T>> stateTransitions = currentState.getStateTransitions();
private void updateWithGreedyCondition( State<T> state, IterativeCondition<T> takeCondition) { for (StateTransition<T> stateTransition : state.getStateTransitions()) { stateTransition.setCondition( new AndCondition<>(stateTransition.getCondition(), new NotCondition<>(takeCondition))); } } }
private void updateWithGreedyCondition( State<T> state, IterativeCondition<T> takeCondition) { for (StateTransition<T> stateTransition : state.getStateTransitions()) { stateTransition.setCondition( new AndCondition<>(stateTransition.getCondition(), new NotCondition<>(takeCondition))); } } }
private void serializeStates(Set<State<T>> states, DataOutputView out) throws IOException { TypeSerializer<String> nameSerializer = StringSerializer.INSTANCE; TypeSerializer<State.StateType> stateTypeSerializer = new EnumSerializer<>(State.StateType.class); TypeSerializer<StateTransitionAction> actionSerializer = new EnumSerializer<>(StateTransitionAction.class); out.writeInt(states.size()); for (State<T> state: states) { nameSerializer.serialize(state.getName(), out); stateTypeSerializer.serialize(state.getStateType(), out); } for (State<T> state: states) { nameSerializer.serialize(state.getName(), out); out.writeInt(state.getStateTransitions().size()); for (StateTransition<T> transition : state.getStateTransitions()) { nameSerializer.serialize(transition.getSourceState().getName(), out); nameSerializer.serialize(transition.getTargetState().getName(), out); actionSerializer.serialize(transition.getAction(), out); serializeCondition(transition.getCondition(), out); } } }
private State<T> copy(final State<T> state) { final State<T> copyOfState = createState( NFAStateNameHandler.getOriginalNameFromInternal(state.getName()), state.getStateType()); for (StateTransition<T> tStateTransition : state.getStateTransitions()) { copyOfState.addStateTransition( tStateTransition.getAction(), tStateTransition.getTargetState().equals(tStateTransition.getSourceState()) ? copyOfState : tStateTransition.getTargetState(), tStateTransition.getCondition()); } return copyOfState; }
private State<T> copy(final State<T> state) { final State<T> copyOfState = createState( NFAStateNameHandler.getOriginalNameFromInternal(state.getName()), state.getStateType()); for (StateTransition<T> tStateTransition : state.getStateTransitions()) { copyOfState.addStateTransition( tStateTransition.getAction(), tStateTransition.getTargetState().equals(tStateTransition.getSourceState()) ? copyOfState : tStateTransition.getTargetState(), tStateTransition.getCondition()); } return copyOfState; }