Examples with SimpleCondition org.apache.flink.cep.pattern.conditions.SimpleCondition used on opensource projects

Example 16 with SimpleCondition

use of org.apache.flink.cep.pattern.conditions.SimpleCondition in project flink by apache.

the class GreedyITCase method testGreedyZeroOrMoreWithDummyEventsAfterQuantifier.

@Test
public void testGreedyZeroOrMoreWithDummyEventsAfterQuantifier() throws Exception {
    List<StreamRecord<Event>> inputEvents = new ArrayList<>();
    Event c = new Event(40, "c", 1.0);
    Event a1 = new Event(41, "a", 2.0);
    Event a2 = new Event(42, "a", 2.0);
    Event d = new Event(44, "d", 3.0);
    inputEvents.add(new StreamRecord<>(c, 1));
    inputEvents.add(new StreamRecord<>(a1, 2));
    inputEvents.add(new StreamRecord<>(a2, 3));
    inputEvents.add(new StreamRecord<>(new Event(43, "dummy", 2.0), 4));
    inputEvents.add(new StreamRecord<>(d, 5));
    // c a* d
    Pattern<Event, ?> pattern = Pattern.<Event>begin("start").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("c");
        }
    }).followedBy("middle").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("a");
        }
    }).oneOrMore().optional().greedy().followedBy("end").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("d");
        }
    });
    NFA<Event> nfa = compile(pattern, false);
    final List<List<Event>> resultingPatterns = feedNFA(inputEvents, nfa);
    comparePatterns(resultingPatterns, Lists.<List<Event>>newArrayList(Lists.newArrayList(c, a1, a2, d)));
}

Example 17 with SimpleCondition

use of org.apache.flink.cep.pattern.conditions.SimpleCondition in project flink by apache.

the class GreedyITCase method testGreedyZeroOrMore.

@Test
public void testGreedyZeroOrMore() throws Exception {
    List<StreamRecord<Event>> inputEvents = new ArrayList<>();
    Event c = new Event(40, "c", 1.0);
    Event a1 = new Event(41, "a", 2.0);
    Event a2 = new Event(42, "a", 2.0);
    Event a3 = new Event(43, "a", 2.0);
    Event d = new Event(44, "d", 3.0);
    inputEvents.add(new StreamRecord<>(c, 1));
    inputEvents.add(new StreamRecord<>(a1, 2));
    inputEvents.add(new StreamRecord<>(a2, 3));
    inputEvents.add(new StreamRecord<>(a3, 4));
    inputEvents.add(new StreamRecord<>(d, 5));
    // c a* d
    Pattern<Event, ?> pattern = Pattern.<Event>begin("start").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("c");
        }
    }).followedBy("middle").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("a");
        }
    }).oneOrMore().optional().greedy().followedBy("end").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("d");
        }
    });
    NFA<Event> nfa = compile(pattern, false);
    final List<List<Event>> resultingPatterns = feedNFA(inputEvents, nfa);
    comparePatterns(resultingPatterns, Lists.<List<Event>>newArrayList(Lists.newArrayList(c, a1, a2, a3, d)));
}

Example 18 with SimpleCondition

use of org.apache.flink.cep.pattern.conditions.SimpleCondition in project flink by apache.

the class CEPOperatorTest method testCEPOperatorSerializationWRocksDB.

@Test
public void testCEPOperatorSerializationWRocksDB() throws Exception {
    String rocksDbPath = tempFolder.newFolder().getAbsolutePath();
    RocksDBStateBackend rocksDBStateBackend = new RocksDBStateBackend(new MemoryStateBackend());
    rocksDBStateBackend.setDbStoragePath(rocksDbPath);
    final Event startEvent1 = new Event(40, "start", 1.0);
    final Event startEvent2 = new Event(40, "start", 2.0);
    final SubEvent middleEvent1 = new SubEvent(40, "foo1", 1.0, 10);
    final SubEvent middleEvent2 = new SubEvent(40, "foo2", 2.0, 10);
    final SubEvent middleEvent3 = new SubEvent(40, "foo3", 3.0, 10);
    final SubEvent middleEvent4 = new SubEvent(40, "foo4", 1.0, 10);
    final Event nextOne = new Event(40, "next-one", 1.0);
    final Event endEvent = new Event(40, "end", 1.0);
    final Pattern<Event, ?> pattern = Pattern.<Event>begin("start").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("start");
        }
    }).followedBy("middle").subtype(SubEvent.class).where(new IterativeCondition<SubEvent>() {

        private static final long serialVersionUID = 6215754202506583964L;

        @Override
        public boolean filter(SubEvent value, Context<SubEvent> ctx) throws Exception {
            if (!value.getName().startsWith("foo")) {
                return false;
            }
            double sum = 0.0;
            for (Event event : ctx.getEventsForPattern("middle")) {
                sum += event.getPrice();
            }
            sum += value.getPrice();
            return Double.compare(sum, 5.0) < 0;
        }
    }).oneOrMore().allowCombinations().followedBy("end").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 7056763917392056548L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("end");
        }
    });
    CepOperator<Event, Integer, Map<String, List<Event>>> operator = CepOperatorTestUtilities.getKeyedCepOperator(false, new NFACompiler.NFAFactory<Event>() {

        private static final long serialVersionUID = 477082663248051994L;

        @Override
        public NFA<Event> createNFA() {
            return NFACompiler.compileFactory(pattern, false).createNFA();
        }
    });
    OneInputStreamOperatorTestHarness<Event, Map<String, List<Event>>> harness = CepOperatorTestUtilities.getCepTestHarness(operator);
    try {
        harness.setStateBackend(rocksDBStateBackend);
        harness.open();
        harness.processWatermark(0L);
        harness.processElement(new StreamRecord<>(startEvent1, 1));
        harness.processElement(new StreamRecord<Event>(middleEvent1, 2));
        harness.processWatermark(2L);
        harness.processElement(new StreamRecord<Event>(middleEvent3, 5));
        harness.processElement(new StreamRecord<Event>(middleEvent2, 3));
        harness.processElement(new StreamRecord<>(startEvent2, 4));
        harness.processWatermark(5L);
        harness.processElement(new StreamRecord<>(nextOne, 7));
        harness.processElement(new StreamRecord<>(endEvent, 8));
        harness.processElement(new StreamRecord<Event>(middleEvent4, 6));
        harness.processWatermark(100L);
        List<List<Event>> resultingPatterns = new ArrayList<>();
        while (!harness.getOutput().isEmpty()) {
            Object o = harness.getOutput().poll();
            if (!(o instanceof Watermark)) {
                StreamRecord<Map<String, List<Event>>> el = (StreamRecord<Map<String, List<Event>>>) o;
                List<Event> res = new ArrayList<>();
                for (List<Event> le : el.getValue().values()) {
                    res.addAll(le);
                }
                resultingPatterns.add(res);
            }
        }
        compareMaps(resultingPatterns, Lists.<List<Event>>newArrayList(Lists.newArrayList(startEvent1, endEvent, middleEvent1, middleEvent2, middleEvent4), Lists.newArrayList(startEvent1, endEvent, middleEvent2, middleEvent1), Lists.newArrayList(startEvent1, endEvent, middleEvent3, middleEvent1), Lists.newArrayList(startEvent2, endEvent, middleEvent3, middleEvent4), Lists.newArrayList(startEvent1, endEvent, middleEvent4, middleEvent1), Lists.newArrayList(startEvent1, endEvent, middleEvent1), Lists.newArrayList(startEvent2, endEvent, middleEvent3)));
    } finally {
        harness.close();
    }
}

Example 19 with SimpleCondition

use of org.apache.flink.cep.pattern.conditions.SimpleCondition in project flink by apache.

the class UntilConditionITCase method testUntilConditionFollowedByZeroOrMore.

@Test
public void testUntilConditionFollowedByZeroOrMore() throws Exception {
    List<StreamRecord<Event>> inputEvents = new ArrayList<>();
    Event startEvent = new Event(40, "c", 1.0);
    Event middleEvent1 = new Event(41, "a", 2.0);
    Event middleEvent2 = new Event(42, "a", 3.0);
    Event breaking = new Event(44, "a", 5.0);
    Event ignored = new Event(45, "a", 6.0);
    inputEvents.add(new StreamRecord<>(startEvent, 1));
    inputEvents.add(new StreamRecord<>(middleEvent1, 3));
    inputEvents.add(new StreamRecord<>(middleEvent2, 4));
    inputEvents.add(new StreamRecord<>(breaking, 6));
    inputEvents.add(new StreamRecord<>(ignored, 7));
    Pattern<Event, ?> pattern = Pattern.<Event>begin("start").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("c");
        }
    }).followedBy("middle").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("a");
        }
    }).oneOrMore().optional().until(UNTIL_CONDITION).followedBy("end").where(UNTIL_CONDITION);
    NFA<Event> nfa = compile(pattern, false);
    NFAState nfaState = nfa.createInitialNFAState();
    NFATestHarness nfaTestHarness = NFATestHarness.forNFA(nfa).withNFAState(nfaState).build();
    final List<List<Event>> resultingPatterns = nfaTestHarness.feedRecords(inputEvents);
    comparePatterns(resultingPatterns, Lists.<List<Event>>newArrayList(Lists.newArrayList(startEvent, middleEvent1, middleEvent2, breaking), Lists.newArrayList(startEvent, middleEvent1, breaking), Lists.newArrayList(startEvent, breaking)));
    assertEquals(1, nfaState.getPartialMatches().size());
    assertEquals("start", nfaState.getPartialMatches().peek().getCurrentStateName());
}

Example 20 with SimpleCondition

use of org.apache.flink.cep.pattern.conditions.SimpleCondition in project flink by apache.

the class UntilConditionITCase method testUntilConditionFollowedByOneOrMoreConsecutive2.

@Test
public void testUntilConditionFollowedByOneOrMoreConsecutive2() throws Exception {
    List<StreamRecord<Event>> inputEvents = new ArrayList<>();
    Event startEvent = new Event(40, "c", 1.0);
    Event middleEvent1 = new Event(41, "a", 2.0);
    Event middleEvent2 = new Event(42, "b", 3.0);
    Event middleEvent3 = new Event(43, "a", 4.0);
    Event breaking = new Event(45, "a", 5.0);
    Event ignored = new Event(46, "a", 6.0);
    inputEvents.add(new StreamRecord<>(startEvent, 1));
    inputEvents.add(new StreamRecord<>(middleEvent1, 3));
    inputEvents.add(new StreamRecord<>(middleEvent2, 4));
    inputEvents.add(new StreamRecord<>(middleEvent3, 5));
    inputEvents.add(new StreamRecord<>(breaking, 7));
    inputEvents.add(new StreamRecord<>(ignored, 8));
    Pattern<Event, ?> pattern = Pattern.<Event>begin("start").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("c");
        }
    }).followedBy("middle").where(new SimpleCondition<Event>() {

        private static final long serialVersionUID = 5726188262756267490L;

        @Override
        public boolean filter(Event value) throws Exception {
            return value.getName().equals("a");
        }
    }).oneOrMore().consecutive().until(UNTIL_CONDITION).followedBy("end").where(UNTIL_CONDITION);
    NFA<Event> nfa = compile(pattern, false);
    NFAState nfaState = nfa.createInitialNFAState();
    NFATestHarness nfaTestHarness = NFATestHarness.forNFA(nfa).withNFAState(nfaState).build();
    final List<List<Event>> resultingPatterns = nfaTestHarness.feedRecords(inputEvents);
    comparePatterns(resultingPatterns, Lists.<List<Event>>newArrayList(Lists.newArrayList(startEvent, middleEvent1, breaking)));
    assertEquals(1, nfaState.getPartialMatches().size());
    assertEquals("start", nfaState.getPartialMatches().peek().getCurrentStateName());
}