Examples with Supplier java.util.function.Supplier used on opensource projects

Example 31 with Supplier

use of java.util.function.Supplier in project riposte by Nike-Inc.

the class ParserTest method test_match6_works.

@Test
public void test_match6_works() throws ParserFailure {
    final Pattern numberPattern = Pattern.compile("([0-9])");
    final Pattern booleanPattern = Pattern.compile("(true|false)");
    final Supplier<Parser<Integer>> number = () -> regex(numberPattern).map(m -> new Integer(m.group(1)));
    final Supplier<Parser<Boolean>> bool = () -> regex(booleanPattern).map(m -> new Boolean(m.group(1)));
    Parser<String> parser = number.get().thenParse(string("A")).thenParse(bool).thenParse(number).thenParse(string("B")).thenParse(bool).map(match((first, second, third, fourth, fifth, sixth) -> {
        return first.toString() + "+" + second.toString() + "+" + third.toString() + "+" + fourth.toString() + "+" + fifth.toString() + "+" + sixth.toString();
    }));
    Optional<String> oResult = parser.tryParse("1Atrue2Bfalse");
    assertThat(oResult.isPresent()).isTrue();
    assertThat(oResult.get()).isNotNull();
    assertThat(oResult.get()).isEqualTo("1+A+true+2+B+false");
}

Example 32 with Supplier

use of java.util.function.Supplier in project jdk8u_jdk by JetBrains.

the class ConcurrentAssociateTest method testOnce.

private static void testOnce(String desc, BiConsumer<ConcurrentMap<Object, Object>, Object> associator) {
    ConcurrentHashMap<Object, Object> m = new ConcurrentHashMap<>();
    CountDownLatch s = new CountDownLatch(1);
    Supplier<Runnable> sr = () -> () -> {
        try {
            s.await();
        } catch (InterruptedException e) {
        }
        for (int i = 0; i < N; i++) {
            Object o = new X();
            associator.accept(m, o);
            if (!m.containsKey(o)) {
                throw new AssociationFailure(desc + " failed: entry does not exist");
            }
        }
    };
    int ps = Runtime.getRuntime().availableProcessors();
    Stream<CompletableFuture> runners = IntStream.range(0, ps).mapToObj(i -> sr.get()).map(CompletableFuture::runAsync);
    CompletableFuture all = CompletableFuture.allOf(runners.toArray(CompletableFuture[]::new));
    // Trigger the runners to start associating
    s.countDown();
    try {
        all.join();
    } catch (CompletionException e) {
        Throwable t = e.getCause();
        if (t instanceof AssociationFailure) {
            throw (AssociationFailure) t;
        } else {
            throw e;
        }
    }
}

Example 33 with Supplier

use of java.util.function.Supplier in project java-design-patterns by iluwatar.

the class Java8HolderTest method getInternalHeavyValue.

@Override
Heavy getInternalHeavyValue() throws Exception {
    final Field holderField = Java8Holder.class.getDeclaredField("heavy");
    holderField.setAccessible(true);
    final Supplier<Heavy> supplier = (Supplier<Heavy>) holderField.get(this.holder);
    final Class<? extends Supplier> supplierClass = supplier.getClass();
    // The lazy holder is at first a lambda, but gets replaced with a new supplier after loading ...
    if (supplierClass.isLocalClass()) {
        final Field instanceField = supplierClass.getDeclaredField("heavyInstance");
        instanceField.setAccessible(true);
        return (Heavy) instanceField.get(supplier);
    } else {
        return null;
    }
}

Example 34 with Supplier

use of java.util.function.Supplier in project wildfly by wildfly.

the class RemoveOnCancelScheduledExecutorServiceBuilder method build.

@Override
public ServiceBuilder<ScheduledExecutorService> build(ServiceTarget target) {
    Function<ScheduledExecutorService, ScheduledExecutorService> mapper = executor -> JBossExecutors.protectedScheduledExecutorService(executor);
    Supplier<ScheduledExecutorService> supplier = () -> {
        ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(this.size, this.factory);
        executor.setRemoveOnCancelPolicy(true);
        executor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
        return executor;
    };
    Service<ScheduledExecutorService> service = new SuppliedValueService<>(mapper, supplier, ScheduledExecutorService::shutdown);
    return new AsynchronousServiceBuilder<>(this.name, service).startSynchronously().build(target).setInitialMode(ServiceController.Mode.ON_DEMAND);
}

Example 35 with Supplier

use of java.util.function.Supplier in project wildfly by wildfly.

the class WeldComponentIntegrationProcessor method addWeldIntegration.

/**
     * As the weld based instantiator needs access to the bean manager it is installed as a service.
     */
private void addWeldIntegration(final Iterable<ComponentIntegrator> componentIntegrators, final ComponentInterceptorSupport componentInterceptorSupport, final ServiceTarget target, final ComponentConfiguration configuration, final ComponentDescription description, final Class<?> componentClass, final String beanName, final ServiceName weldServiceName, final ServiceName weldStartService, final ServiceName beanManagerService, final Set<Class<?>> interceptorClasses, final ClassLoader classLoader, final String beanDeploymentArchiveId) {
    final ServiceName serviceName = configuration.getComponentDescription().getServiceName().append("WeldInstantiator");
    final WeldComponentService weldComponentService = new WeldComponentService(componentClass, beanName, interceptorClasses, classLoader, beanDeploymentArchiveId, description.isCDIInterceptorEnabled(), description, isComponentWithView(description, componentIntegrators));
    final ServiceBuilder<WeldComponentService> builder = target.addService(serviceName, weldComponentService).addDependency(weldServiceName, WeldBootstrapService.class, weldComponentService.getWeldContainer()).addDependency(weldStartService);
    configuration.setInstanceFactory(WeldManagedReferenceFactory.INSTANCE);
    configuration.getStartDependencies().add(new DependencyConfigurator<ComponentStartService>() {

        @Override
        public void configureDependency(final ServiceBuilder<?> serviceBuilder, ComponentStartService service) throws DeploymentUnitProcessingException {
            serviceBuilder.addDependency(serviceName);
        }
    });
    boolean isComponentIntegrationPerformed = false;
    for (ComponentIntegrator componentIntegrator : componentIntegrators) {
        Supplier<ServiceName> bindingServiceNameSupplier = () -> {
            if (componentInterceptorSupport == null) {
                WeldLogger.DEPLOYMENT_LOGGER.componentInterceptorSupportNotAvailable(componentClass);
            }
            return addWeldInterceptorBindingService(target, configuration, componentClass, beanName, weldServiceName, weldStartService, beanDeploymentArchiveId, componentInterceptorSupport);
        };
        DefaultInterceptorIntegrationAction integrationAction = (bindingServiceName) -> {
            if (componentInterceptorSupport == null) {
                WeldLogger.DEPLOYMENT_LOGGER.componentInterceptorSupportNotAvailable(componentClass);
            }
            addJsr299BindingsCreateInterceptor(configuration, description, beanName, weldServiceName, builder, bindingServiceName, componentInterceptorSupport);
            addCommonLifecycleInterceptionSupport(configuration, builder, bindingServiceName, beanManagerService, componentInterceptorSupport);
            configuration.addComponentInterceptor(new UserInterceptorFactory(factory(InterceptionType.AROUND_INVOKE, builder, bindingServiceName, componentInterceptorSupport), factory(InterceptionType.AROUND_TIMEOUT, builder, bindingServiceName, componentInterceptorSupport)), InterceptorOrder.Component.CDI_INTERCEPTORS, false);
        };
        if (componentIntegrator.integrate(beanManagerService, configuration, description, builder, bindingServiceNameSupplier, integrationAction, componentInterceptorSupport)) {
            isComponentIntegrationPerformed = true;
            break;
        }
    }
    if (!isComponentIntegrationPerformed) {
        //otherwise they will be called twice
        description.setIgnoreLifecycleInterceptors(true);
        // for components with no view register interceptors that delegate to InjectionTarget lifecycle methods to trigger lifecycle interception
        configuration.addPostConstructInterceptor(new ImmediateInterceptorFactory(new AbstractInjectionTargetDelegatingInterceptor() {

            @Override
            protected void run(Object instance) {
                weldComponentService.getInjectionTarget().postConstruct(instance);
            }
        }), InterceptorOrder.ComponentPostConstruct.CDI_INTERCEPTORS);
        configuration.addPreDestroyInterceptor(new ImmediateInterceptorFactory(new AbstractInjectionTargetDelegatingInterceptor() {

            @Override
            protected void run(Object instance) {
                weldComponentService.getInjectionTarget().preDestroy(instance);
            }
        }), InterceptorOrder.ComponentPreDestroy.CDI_INTERCEPTORS);
    }
    builder.install();
    configuration.addPostConstructInterceptor(new ImmediateInterceptorFactory(new WeldInjectionContextInterceptor(weldComponentService)), InterceptorOrder.ComponentPostConstruct.WELD_INJECTION_CONTEXT_INTERCEPTOR);
    configuration.addPostConstructInterceptor(new ImmediateInterceptorFactory(new WeldInterceptorInjectionInterceptor(interceptorClasses)), InterceptorOrder.ComponentPostConstruct.INTERCEPTOR_WELD_INJECTION);
    configuration.addPostConstructInterceptor(WeldInjectionInterceptor.FACTORY, InterceptorOrder.ComponentPostConstruct.COMPONENT_WELD_INJECTION);
}