Examples of OverloadDispatcherGenerator

org.apache.s4.core.gen.OverloadDispatcherGenerator
This class generates a proxy to enable dispatching of events to methods of processing elements based on the runtime type of the event.
When an event is transferred to a processing element, the generated proxy finds the corresponding onEvent method with the event type argument matching the current parameter and calls this method.

If there is no exact match, the closest type in the hierarchy of events is used.

If there is still no match, an error statement is logged and the event is ignored (not processed).

Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator


    transient private CheckpointingConfig checkpointingConfig = new CheckpointingConfig.Builder(CheckpointingMode.NONE)
            .build();


    protected ProcessingElement() {
        OverloadDispatcherGenerator oldg = new OverloadDispatcherGenerator(this.getClass());
        Class<?> overloadDispatcherClass = oldg.generate();
        try {
            overloadDispatcher = (OverloadDispatcher) overloadDispatcherClass.newInstance();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator


public class OverloadDispatcherTest {


    @Test
    public void testDispatchWithEventHierarchies() throws Exception {
        OverloadDispatcherGenerator gen = new OverloadDispatcherGenerator(A.class);
        OverloadDispatcher dispatcher = (OverloadDispatcher) gen.generate().newInstance();
        A a = new A();
        // input events
        dispatcher.dispatchEvent(a, new Event1());
        Assert.assertEquals(Event1.class, a.processedEventClass);
        dispatcher.dispatchEvent(a, new Event1a());

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator

        Assert.assertFalse(a.processedTriggerThroughGenericMethod);
    }
    
    @Test
    public void testDispatchWithSingleMethod() throws Exception {
        OverloadDispatcherGenerator gen = new OverloadDispatcherGenerator(C.class);
        OverloadDispatcher dispatcher = (OverloadDispatcher) gen.generate().newInstance();
        C c = new C();
        dispatcher.dispatchEvent(c, new Event2());
        Assert.assertFalse(c.processedEvent1Class);
        dispatcher.dispatchEvent(c, new Event1());
        Assert.assertTrue(c.processedEvent1Class);

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator

        PrintStream stdout = System.out;
        try {
            ByteArrayOutputStream tmpOut = new ByteArrayOutputStream();
            System.setOut(new PrintStream(tmpOut));


            OverloadDispatcherGenerator gen = new OverloadDispatcherGenerator(B.class);
            OverloadDispatcher dispatcher = (OverloadDispatcher) gen.generate().newInstance();
            B b = new B();
            dispatcher.dispatchEvent(b, new Event1());
            String output = tmpOut.toString().trim();
            // use DOTALL to ignore previous lines in output debug mode
            Assert.assertTrue(Pattern.compile("^.+OverloadDispatcher\\d+ - Cannot dispatch event "

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator


    }
    
    @Test
    public void testGenericEvent() throws Exception {
        OverloadDispatcherGenerator gen = new OverloadDispatcherGenerator(D.class);
        OverloadDispatcher dispatcher = (OverloadDispatcher) gen.generate().newInstance();
        D d = new D();
        dispatcher.dispatchEvent(d, new Event2());
        Assert.assertTrue(d.processedGenericEvent);
        dispatcher.dispatchEvent(d, new Event1());
        Assert.assertTrue(d.processedEvent1);

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator


    transient private CheckpointingConfig checkpointingConfig = new CheckpointingConfig.Builder(CheckpointingMode.NONE)
            .build();


    protected ProcessingElement() {
        OverloadDispatcherGenerator oldg = new OverloadDispatcherGenerator(this.getClass());
        Class<?> overloadDispatcherClass = oldg.generate();
        try {
            overloadDispatcher = (OverloadDispatcher) overloadDispatcherClass.newInstance();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator

     * 
     * @param app
     *            the app that contains this PE
     */
    public ProcessingElement(App app) {
        OverloadDispatcherGenerator oldg = new OverloadDispatcherGenerator(this.getClass());
        Class<?> overloadDispatcherClass = oldg.generate();
        try {
            overloadDispatcher = (OverloadDispatcher) overloadDispatcherClass.newInstance();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator


public class OverloadDispatcherTest {


    @Test
    public void testDispatchWithEventHierarchies() throws Exception {
        OverloadDispatcherGenerator gen = new OverloadDispatcherGenerator(A.class);
        OverloadDispatcher dispatcher = (OverloadDispatcher) gen.generate().newInstance();
        A a = new A();
        // input events
        dispatcher.dispatchEvent(a, new Event1());
        Assert.assertEquals(Event1.class, a.processedEventClass);
        dispatcher.dispatchEvent(a, new Event1a());

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator

        Assert.assertFalse(a.processedTriggerThroughGenericMethod);
    }
    
    @Test
    public void testDispatchWithSingleMethod() throws Exception {
        OverloadDispatcherGenerator gen = new OverloadDispatcherGenerator(C.class);
        OverloadDispatcher dispatcher = (OverloadDispatcher) gen.generate().newInstance();
        C c = new C();
        dispatcher.dispatchEvent(c, new Event2());
        Assert.assertFalse(c.processedEvent1Class);
        dispatcher.dispatchEvent(c, new Event1());
        Assert.assertTrue(c.processedEvent1Class);

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Examples of org.apache.s4.core.gen.OverloadDispatcherGenerator

        PrintStream stdout = System.out;
        try {
            ByteArrayOutputStream tmpOut = new ByteArrayOutputStream();
            System.setOut(new PrintStream(tmpOut));


            OverloadDispatcherGenerator gen = new OverloadDispatcherGenerator(B.class);
            OverloadDispatcher dispatcher = (OverloadDispatcher) gen.generate().newInstance();
            B b = new B();
            dispatcher.dispatchEvent(b, new Event1());
            String output = tmpOut.toString().trim();
            // use DOTALL to ignore previous lines in output debug mode
            Assert.assertTrue(Pattern.compile("^.+OverloadDispatcher\\d+ - Cannot dispatch event "

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