How to use a generic common Interface for Jax-WS ?
public interface IGenericWebService<T extends Record> {
#WebMethod
public List<T> listAll();
}
how to make it works without overriding the method ?
#WebService
public interface IWCustomerService extends IGenericWebService<Customer>{
/*
#WebMethod
public List<Customer> listAll(); */
}
Common implementation
public abstract class GenericWebService<T extends Record> implements IGenericWebService<T>{
protected static Log log = LogFactory.getLog(GenericWebService.class);
}
Customer Service
#WebService(endpointInterface="com.dev.bridge.iwservices.IWCustomerService")
#Service
public class WCustomerService extends GenericWebService<Customer> implements IWCustomerService{
#Autowired
private ICustomerService customerService;
public List<Customer> listAll() {
try {
return customerService.listAll();
} catch (CoreException e) {
log.error(e.getMessage(), e);
}
return new ArrayList<Customer>();
}
}
Related
I want to find beans at runtime depending on user input, so using io.quarkus.arc.Arc.
However, I cannot figure out how to get beans with custom annotation in a reasonable way. Only got something working by implementing the annotation interface like:
InstanceHandle<Service> instanceHandleA = Arc.container()
.instance(Service.class, new SupportsJobTypeImpl(JobType.A));
InstanceHandle<Service> instanceHandleB = Arc.container()
.instance(Service.class, new SupportsJobTypeImpl(JobType.B));
class SupportsJobTypeImpl implements SupportsJobType {
JobType requestedJobType;
public SupportsJobTypeImpl(JobType requestedJobType) {
this.requestedJobType = requestedJobType;
}
#Override
public JobType value() {
return requestedJobType;
}
#Override
public Class<? extends Annotation> annotationType() {
return SupportsJobType.class;
}
}
Is there a way to get instanceHandleA, instanceHandleB with less cumbersome verbose code like SupportsJobTypeImpl?
Background info about my test code:
public enum JobType {
A,B
}
#Qualifier
#Retention(RUNTIME)
#Target({METHOD, FIELD, PARAMETER, TYPE})
public #interface SupportsJobType {
JobType value();
}
#ApplicationScoped
#SupportsJobType(JobType.A)
public class ServiceForA extends Service {
}
#ApplicationScoped
#SupportsJobType(JobType.B)
public class ServiceForB extends Service {
}
UPDATE: Tried to get it working by including SupportsJobTypeImpl in the SupportsJobType annotation interface (like in the example from https://docs.jboss.org/cdi/api/2.0/javax/enterprise/util/AnnotationLiteral.html):
#Qualifier
#Retention(RUNTIME)
#Target({METHOD, FIELD, PARAMETER, TYPE})
public #interface SupportsJobType {
JobType value();
public abstract class Literal extends AnnotationLiteral<SupportsJobType> implements SupportsJobType {
JobType requestedJobType;
public Literal() {
}
#Override
public JobType value() {
return requestedJobType;
}
#Override
public Class<? extends Annotation> annotationType() {
return SupportsJobType.class;
}
}
}
however, I get no bean instance from ArC by:
InstanceHandle<Service> instanceHandleA = Arc.container().instance(Service.class, new SupportsJobType.Literal() {
public JobType value() {
return JobType.A;
}
});
UPDATE2: also not working:
#Qualifier
#Retention(RUNTIME)
#Target({METHOD, FIELD, PARAMETER, TYPE})
public #interface SupportsJobType {
JobType value();
class Literal extends AnnotationLiteral<SupportsJobType> implements SupportsJobType {
JobType requestedJobType;
public Literal(JobType requestedJobType) {
this.requestedJobType = requestedJobType;
}
#Override
public JobType value() {
return requestedJobType;
}
#Override
public Class<? extends Annotation> annotationType() {
return SupportsJobType.class;
}
}
}
I get no bean instance from ArC by:
InstanceHandle<Service> instanceHandleA = Arc.container().instance(Service.class, new SupportsJobType.Literal(JobType.A));
As far as I can tell, what you're doing is exactly what you should do. It is idiomatic for implementations of annotation types to be nested in the annotation type itself, be called Literal and extend the AnnotationLiteral class. For example (writing from memory):
#Qualifier
#Retention(RUNTIME)
#Target({METHOD, FIELD, PARAMETER, TYPE})
public #interface SupportsJobType {
JobType value();
class Literal extends AnnotationLiteral<SupportsJobType> implements SupportsJobType {
private final JobType value;
public Literal(JobType value) {
this.value = value;
}
#Override
public JobType value() {
return value;
}
}
}
Turns out I was stumbling over a small detail like mentioned in https://stackoverflow.com/a/66980506/753724
which means I simply had to add #Unremovable to beans resulting in:
#ApplicationScoped
#Unremovable
#SupportsJobType(JobType.A)
public class ServiceForA extends Service {
}
#ApplicationScoped
#Unremovable
#SupportsJobType(JobType.B)
public class ServiceForB extends Service {
}
With the slightly adapted Annotation class (only new static method):
#Qualifier
#Retention(RUNTIME)
#Target({METHOD, FIELD, PARAMETER, TYPE})
public #interface SupportsJobType {
JobType value();
class Literal extends AnnotationLiteral<SupportsJobType> implements SupportsJobType {
JobType requestedJobType;
public Literal(JobType requestedJobType) {
this.requestedJobType = requestedJobType;
}
public static Literal of(JobType value) {
return new Literal(value);
}
#Override
public JobType value() {
return requestedJobType;
}
#Override
public Class<? extends Annotation> annotationType() {
return SupportsJobType.class;
}
}
}
the beans were found as expected by:
InstanceHandle<Service> instanceHandleA = Arc.container().instance(Service.class, SupportsJobType.Literal.of(JobType.A));
InstanceHandle<Service> instanceHandleB = Arc.container().instance(Service.class, SupportsJobType.Literal.of(JobType.B));
My Razor Page
public class IndexModel : BaseModel {
public void OnGet() {
BaseModelMethod();
}
public void LocalMethod() {}
}
calls a method in the base ViewModel
public class BaseModel : PageModel {
public void BaseModelMethod() {
// Do stuff
}
}
Is there a way to call back to the instance of LocalMethod in the calling Razor Page?
You have to define the function as a virtual function. Your BaseModel has to have the following form:
public class BaseModel : PageModel
{
public void BaseModelMethod()
{
LocalMethod();
}
public virtual void LocalMethod()
{
}
}
As you can see I creted the virtual function so that we will know what we kind of method we will call.
Now we can define our own version of LocalMethod like this:
public class IndexModel : BaseModel
{
public void OnGet()
{
BaseModelMethod();
}
public override void LocalMethod()
{
base.LocalMethod();
}
}
In guice, Is there a way to select particular implementation for binding based on some external parameter
Eg:
public interface Service {
void sendMessage()
}
class EmailService implements Service {
public EmailService() { }
#Override
void sendMessage() {
println "Sending email..."
}
}
class SMSService implements Service {
public EmailService() { }
#Override
void sendMessage() {
println "Sending sms..."
}
}
class Client {
private Service service
#Inject
Client(Service service) {
this.service = service
}
public void send() {
service.sendMessage()
}
}
public class ServiceProvider implements Provider<Service> {
Service get() {
return new SMSService() //Select implementation here?
}
}
public class MyModule extends AbstractModule {
#Override
protected void configure() {
bind(Service.class).toProvider(ServiceProvider.class).in(Scopes.SINGLETON)
}
}
public static void main(String...args) {
Injector injector = Guice.createInjector(new MyModule())
Client c = injector.getInstance(Client.class)
c.send()
}
In the above example, I'm forced to select which provider to use in Provider get() method. If I want to make this more dynamic, say for example, based on user preference, is there a way to wait select the provider at runtime and have guice inject it?
For these kind of problems, guice offers the MapBinder:
public class SnacksModule extends AbstractModule {
protected void configure() {
MapBinder<String, Snack> mapbinder
= MapBinder.newMapBinder(binder(), String.class, Snack.class);
mapbinder.addBinding("twix").toInstance(new Twix());
mapbinder.addBinding("snickers").toProvider(SnickersProvider.class);
mapbinder.addBinding("skittles").to(Skittles.class);
}
}
With this binding, a Map can now be injected:
class SnackMachine {
#Inject
public SnackMachine(Map<String, Snack> snacks) { ... }
}
You can define all your services in advance, and than pick the concrete instance (or provider) from the map byconfigured value.
I would like to intercept all spring integration gateways via AOP.
Is it possible to do that? If not what might be best way to do log input object coming to gateway?
#ContextConfiguration
#RunWith(SpringJUnit4ClassRunner.class)
#DirtiesContext
public class AdviceExample {
#Autowired
private TestGateway testGateway;
#Test
public void testIt() {
System.out.println(this.testGateway.testIt("foo"));
}
#MessagingGateway
public interface TestGateway {
#Gateway(requestChannel = "testChannel")
#CustomAnnotation
String testIt(String payload);
}
#Configuration
#EnableIntegration
#IntegrationComponentScan
#EnableMessageHistory
#EnableAspectJAutoProxy
public static class ContextConfiguration {
LoggingHandler logger = new LoggingHandler(LoggingHandler.Level.INFO.name());
#Bean
public IntegrationFlow testFlow() {
return IntegrationFlows.from("testChannel")
.transform("payload.toUpperCase()")
.channel("testChannel")
.transform("payload.concat(' Manoj')")
.channel("testChannel")
.handle(logger)
.get();
}
#Bean
public GatewayAdvice gtwyAdvice(){
return new GatewayAdvice();
}
}
#Retention(value = RetentionPolicy.RUNTIME)
#Target(value = ElementType.METHOD)
#Inherited
public #interface CustomAnnotation{
}
#Aspect
public static class GatewayAdvice {
#Before("execution(* advice.AdviceExample.TestGateway.testIt(*))")
public void beforeAdvice() {
System.out.println("Before advice called...");
}
#Before("#annotation(advice.AdviceExample.CustomAnnotation)")
public void beforeAnnotationAdvice() {
System.out.println("Before annotation advice called...");
}
}
}
Yes, you can do that. Take a look to the standard Spring AOP Framework. Since all those #Gateway are beans in the end you can add for them any Advice by their bean names and for the specific method, if that. For example we often suggest to use #Transactional on gateway's methods. And this is exactly a sample "how to use AOP on integration gateway".
I am trying to re-use the service registrations in an assembly that I use through a few services in my solution. I follow the example listed from the NServiceBus website to implement the solution. When following that, unless I add the IWantCustomInitialization interface, my Init method (and IoC container implementation) appears not to function. When I have that interface implemented, I get exceptions (listed in SO questions here and here). I can't seem to get it to work that there are no exceptions AND the dependencies in my MessageHandler are being populated properly. Here is my current EndpointConfig implementation.
[EndpointSLA("00:00:30")]
public class EndpointConfig : IConfigureThisEndpoint, AsA_Server, UsingTransport<Msmq>, INeedInitialization {
public void Init() {
Configure.With().ObjectBuilderAdapter();
}
}
public class ObjectBuilderAdapter : IContainer {
readonly IDependencyInjector injector;
public ObjectBuilderAdapter(IDependencyInjectionBuilder dependencyInjectionBuilder) {
injector = dependencyInjectionBuilder.Create(); //This method does all the common service registrations that I am trying to re-use
//injector.RegisterType<ExtractIncomingPrincipal, PrincipalExtractor>();
}
public void Dispose() {
injector.Dispose();
}
public object Build(Type typeToBuild) {
return injector.Resolve(typeToBuild);
}
public IContainer BuildChildContainer() {
return new ObjectBuilderAdapter(new DependencyInjectorBuilder());
}
public IEnumerable<object> BuildAll(Type typeToBuild) {
return injector.ResolveAll(typeToBuild);
}
public void Configure(Type component, DependencyLifecycle dependencyLifecycle) {
injector.RegisterType(component);
}
public void Configure<T>(Func<T> component, DependencyLifecycle dependencyLifecycle) {
injector.RegisterType(component);
}
public void ConfigureProperty(Type component, string property, object value) {
if (injector is AutofacDependencyInjector) {
((AutofacDependencyInjector)injector).ConfigureProperty(component, property, value);
} else {
Debug.WriteLine("Configuring {0} for property {1} but we don't handle this scenario.", component.Name, property);
}
}
public void RegisterSingleton(Type lookupType, object instance) {
injector.RegisterInstance(lookupType, instance);
}
public bool HasComponent(Type componentType) {
return injector.IsRegistered(componentType);
}
public void Release(object instance) { }
}
public static class Extensions {
public static Configure ObjectBuilderAdapter(this Configure config) {
ConfigureCommon.With(config, new ObjectBuilderAdapter(new DependencyInjectorBuilder()));
return config;
}
}
Note: When I use the INeedInitialization interface, I get the ComponentNotRegisteredException when it's looking for IStartableBus.
When you are trying to swap the built in container, then you need to implement IWantCustomInitialization in the same class that implements IConfigureThisEndpoint.
You can use your own container and register all your types in there and tell NSB to use that container.
For example:
public class EndpointConfig : IConfigureThisEndpoint, AsA_Server, IWantCustomInitialization
{
public void Init()
{
var container = new ContainerBuilder().Build();
Configure.With()
.AutofacBuilder(container);
}
}