Examples of javax.inject.Provider

javax.inject.Provider

Factory to create instances of a bean.

Example: injecting and using Instance

 package example; import javax.enterprise.inject.*; import javax.servlet.*; public class MyServlet extends GenericServlet { {@link javax.enterprise.inject.Obtains @Obtains} {@literal @Instance}<MyBean> _beanFactory; public void service(ServletRequest req, ServletResponse res) { MyBean bean = _beanFactory.get(); } }

@see javax.event.Event


            // only stateful normally
            final InstanceBean<Object> bean = new InstanceBean<Object>(cdiEjbBean);
            if (webBeansContext.getBeanManagerImpl().isNormalScope(scopeClass)) {
                final BeanContext beanContext = cdiEjbBean.getBeanContext();
                final Provider provider = webBeansContext.getNormalScopeProxyFactory().getInstanceProvider(beanContext.getClassLoader(), cdiEjbBean);


                if (!beanContext.isLocalbean()) {
                    final List<Class> interfaces = new ArrayList<Class>();
                    final InterfaceType type = beanContext.getInterfaceType(interfce);
                    if (type != null) {
                        interfaces.addAll(beanContext.getInterfaces(type));
                    } else { // can happen when looked up from impl instead of API in OWB -> default to business local
                        interfaces.addAll(beanContext.getInterfaces(InterfaceType.BUSINESS_LOCAL));
                    }
                    interfaces.add(Serializable.class);
                    interfaces.add(IntraVmProxy.class);
                    if (BeanType.STATEFUL.equals(beanContext.getComponentType()) || BeanType.MANAGED.equals(beanContext.getComponentType())) {
                        interfaces.add(BeanContext.Removable.class);
                    }


                    try {
                        instance = ProxyManager.newProxyInstance(interfaces.toArray(new Class<?>[interfaces.size()]), new InvocationHandler() {
                            @Override
                            public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
                                try {
                                    return method.invoke(provider.get(), args);
                                } catch (final InvocationTargetException ite) {
                                    throw ite.getCause();
                                }
                            }
                        });

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            // only stateful normally
            final InstanceBean<Object> bean = new InstanceBean<Object>(cdiEjbBean);
            if (webBeansContext.getBeanManagerImpl().isNormalScope(scopeClass)) {
                final BeanContext beanContext = cdiEjbBean.getBeanContext();
                final Provider provider = webBeansContext.getNormalScopeProxyFactory().getInstanceProvider(beanContext.getClassLoader(), cdiEjbBean);


                if (!beanContext.isLocalbean()) {
                    final List<Class> interfaces = new ArrayList<Class>();
                    final InterfaceType type = beanContext.getInterfaceType(interfce);
                    if (type != null) {
                        interfaces.addAll(beanContext.getInterfaces(type));
                    } else { // can happen when looked up from impl instead of API in OWB -> default to business local
                        interfaces.addAll(beanContext.getInterfaces(InterfaceType.BUSINESS_LOCAL));
                    }
                    interfaces.add(Serializable.class);
                    interfaces.add(IntraVmProxy.class);
                    if (BeanType.STATEFUL.equals(beanContext.getComponentType()) || BeanType.MANAGED.equals(beanContext.getComponentType())) {
                        interfaces.add(BeanContext.Removable.class);
                    }


                    try {
                        instance = ProxyManager.newProxyInstance(interfaces.toArray(new Class<?>[interfaces.size()]), new InvocationHandler() {
                            @Override
                            public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
                                try {
                                    return method.invoke(provider.get(), args);
                                } catch (final InvocationTargetException ite) {
                                    throw ite.getCause();
                                }
                            }
                        });

View Full Code Here


            // only stateful normally
            final InstanceBean<Object> bean = new InstanceBean<Object>(cdiEjbBean);
            if (webBeansContext.getBeanManagerImpl().isNormalScope(scopeClass)) {
                final BeanContext beanContext = cdiEjbBean.getBeanContext();
                final Provider provider = webBeansContext.getNormalScopeProxyFactory().getInstanceProvider(beanContext.getClassLoader(), cdiEjbBean);


                if (!beanContext.isLocalbean()) {
                    final List<Class> interfaces = new ArrayList<Class>();
                    final InterfaceType type = beanContext.getInterfaceType(interfce);
                    if (type != null) {
                        interfaces.addAll(beanContext.getInterfaces(type));
                    } else { // can happen when looked up from impl instead of API in OWB -> default to business local
                        interfaces.addAll(beanContext.getInterfaces(InterfaceType.BUSINESS_LOCAL));
                    }
                    interfaces.add(Serializable.class);
                    interfaces.add(IntraVmProxy.class);
                    if (BeanType.STATEFUL.equals(beanContext.getComponentType()) || BeanType.MANAGED.equals(beanContext.getComponentType())) {
                        interfaces.add(BeanContext.Removable.class);
                    }


                    try {
                        instance = ProxyManager.newProxyInstance(interfaces.toArray(new Class<?>[interfaces.size()]), new InvocationHandler() {
                            @Override
                            public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
                                try {
                                    return method.invoke(provider.get(), args);
                                } catch (final InvocationTargetException ite) {
                                    throw ite.getCause();
                                }
                            }
                        });

View Full Code Here


        // only stateful normally
        final InstanceBean<Object> bean = new InstanceBean<Object>(cdiEjbBean);
        if (webBeansContext.getBeanManagerImpl().isNormalScope(scopeClass)) {
            final BeanContext beanContext = cdiEjbBean.getBeanContext();
            final Provider provider = webBeansContext.getNormalScopeProxyFactory().getInstanceProvider(beanContext.getClassLoader(), cdiEjbBean);


            if (!beanContext.isLocalbean()) {
                final List<Class> interfaces = new ArrayList<Class>();
                final InterfaceType type = beanContext.getInterfaceType(interfce);
                if (type != null) {
                    interfaces.addAll(beanContext.getInterfaces(type));
                } else { // can happen when looked up from impl instead of API in OWB -> default to business local
                    interfaces.addAll(beanContext.getInterfaces(InterfaceType.BUSINESS_LOCAL));
                }
                interfaces.add(Serializable.class);
                interfaces.add(IntraVmProxy.class);
                if (BeanType.STATEFUL.equals(beanContext.getComponentType()) || BeanType.MANAGED.equals(beanContext.getComponentType())) {
                    interfaces.add(BeanContext.Removable.class);
                }


                try {
                    instance = ProxyManager.newProxyInstance(interfaces.toArray(new Class<?>[interfaces.size()]), new InvocationHandler() {
                        @Override
                        public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
                            try {
                                return method.invoke(provider.get(), args);
                            } catch (final InvocationTargetException ite) {
                                throw ite.getCause();
                            }
                        }
                    });

View Full Code Here

  }


  public Object create(CreationalContext ctx) {
    Object instance;
    try {
      Provider provider = (Provider)providerIT.produce(ctx);
      providerIT.inject(provider, ctx);
      providerIT.postConstruct(provider);


      // Get instance
      instance = provider.get();


      // Now get rid of provider
      providerIT.preDestroy(provider);
      providerIT.dispose(provider);
    }

View Full Code Here

            }
          }
        } else {
          descriptor = null;
          for (ProviderFactory factory : factories) {
            Provider provider = factory.getProvider(beanClass);
            if (provider != null) {
              // Should check that the provider resolved <T> variable
              // is assignable from the implementation Type
              descriptor = BeanDescriptor.createFromProvider(beanClass, beanScope, null, provider);
            }

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        ConversationBean conversationBean = getInstance(ConversationBean.class);
        Assert.assertNotNull(conversationBean);
        Assert.assertTrue(conversationBean instanceof OwbNormalScopeProxy);


        Provider instanceProvider = getWebBeansContext().getNormalScopeProxyFactory().getInstanceProvider((OwbNormalScopeProxy) conversationBean);
        Assert.assertNotNull(instanceProvider);
        Assert.assertEquals(instanceProvider.getClass(), NormalScopedBeanInterceptorHandler.class);




        ApplicationBean applicationBean = getInstance(ApplicationBean.class);
        Assert.assertNotNull(applicationBean);
        Assert.assertTrue(applicationBean instanceof OwbNormalScopeProxy);
        instanceProvider = getWebBeansContext().getNormalScopeProxyFactory().getInstanceProvider((OwbNormalScopeProxy) applicationBean);
        Assert.assertNotNull(instanceProvider);
        Assert.assertEquals(instanceProvider.getClass(), ApplicationScopedBeanInterceptorHandler.class);


    }

View Full Code Here


  public Object get(Errors paramErrors, InternalContext paramInternalContext, Dependency paramDependency, boolean paramBoolean)
    throws ErrorsException
  {
    paramErrors = paramErrors.withSource(this.providerKey);
    Provider localProvider = (Provider)this.providerFactory.get(paramErrors, paramInternalContext, paramDependency, true);
    try
    {
      return paramErrors.checkForNull(localProvider.get(), this.source, paramDependency);
    }
    catch (RuntimeException localRuntimeException)
    {
      throw paramErrors.errorInProvider(localRuntimeException).toException();
    }

View Full Code Here

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Related Classes of javax.inject.Provider

com.google.inject.internal.BoundProviderFactory

com.netflix.governator.guice.ProviderBinderUtil$MyProvider

juzu.impl.inject.spi.cdi.DeclaredProviderBean

juzu.impl.plugin.binding.BindingService

org.apache.openejb.cdi.CdiPlugin

org.apache.webbeans.newtests.proxy.ProxyMappingTest

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