Examples with BindingImpl org.elasticsearch.common.inject.internal.BindingImpl used on opensource projects

Example 1 with BindingImpl

use of org.elasticsearch.common.inject.internal.BindingImpl in project elasticsearch by elastic.

the class BindingProcessor method visit.

@Override
public <T> Boolean visit(Binding<T> command) {
    final Object source = command.getSource();
    if (Void.class.equals(command.getKey().getRawType())) {
        if (command instanceof ProviderInstanceBinding && ((ProviderInstanceBinding) command).getProviderInstance() instanceof ProviderMethod) {
            errors.voidProviderMethod();
        } else {
            errors.missingConstantValues();
        }
        return true;
    }
    final Key<T> key = command.getKey();
    Class<? super T> rawType = key.getTypeLiteral().getRawType();
    if (rawType == Provider.class) {
        errors.bindingToProvider();
        return true;
    }
    validateKey(command.getSource(), command.getKey());
    final Scoping scoping = Scopes.makeInjectable(((BindingImpl<?>) command).getScoping(), injector, errors);
    command.acceptTargetVisitor(new BindingTargetVisitor<T, Void>() {

        @Override
        public Void visit(InstanceBinding<? extends T> binding) {
            Set<InjectionPoint> injectionPoints = binding.getInjectionPoints();
            T instance = binding.getInstance();
            Initializable<T> ref = initializer.requestInjection(injector, instance, source, injectionPoints);
            ConstantFactory<? extends T> factory = new ConstantFactory<>(ref);
            InternalFactory<? extends T> scopedFactory = Scopes.scope(key, injector, factory, scoping);
            putBinding(new InstanceBindingImpl<>(injector, key, source, scopedFactory, injectionPoints, instance));
            return null;
        }

        @Override
        public Void visit(ProviderInstanceBinding<? extends T> binding) {
            Provider<? extends T> provider = binding.getProviderInstance();
            Set<InjectionPoint> injectionPoints = binding.getInjectionPoints();
            Initializable<Provider<? extends T>> initializable = initializer.<Provider<? extends T>>requestInjection(injector, provider, source, injectionPoints);
            InternalFactory<T> factory = new InternalFactoryToProviderAdapter<>(initializable, source);
            InternalFactory<? extends T> scopedFactory = Scopes.scope(key, injector, factory, scoping);
            putBinding(new ProviderInstanceBindingImpl<>(injector, key, source, scopedFactory, scoping, provider, injectionPoints));
            return null;
        }

        @Override
        public Void visit(ProviderKeyBinding<? extends T> binding) {
            Key<? extends Provider<? extends T>> providerKey = binding.getProviderKey();
            BoundProviderFactory<T> boundProviderFactory = new BoundProviderFactory<>(injector, providerKey, source);
            creationListeners.add(boundProviderFactory);
            InternalFactory<? extends T> scopedFactory = Scopes.scope(key, injector, (InternalFactory<? extends T>) boundProviderFactory, scoping);
            putBinding(new LinkedProviderBindingImpl<>(injector, key, source, scopedFactory, scoping, providerKey));
            return null;
        }

        @Override
        public Void visit(LinkedKeyBinding<? extends T> binding) {
            Key<? extends T> linkedKey = binding.getLinkedKey();
            if (key.equals(linkedKey)) {
                errors.recursiveBinding();
            }
            FactoryProxy<T> factory = new FactoryProxy<>(injector, key, linkedKey, source);
            creationListeners.add(factory);
            InternalFactory<? extends T> scopedFactory = Scopes.scope(key, injector, factory, scoping);
            putBinding(new LinkedBindingImpl<>(injector, key, source, scopedFactory, scoping, linkedKey));
            return null;
        }

        @Override
        public Void visit(UntargettedBinding<? extends T> untargetted) {
            // @ImplementedBy annotation or something.
            if (key.hasAnnotationType()) {
                errors.missingImplementation(key);
                putBinding(invalidBinding(injector, key, source));
                return null;
            }
            // This cast is safe after the preceding check.
            final BindingImpl<T> binding;
            try {
                binding = injector.createUnitializedBinding(key, scoping, source, errors);
                putBinding(binding);
            } catch (ErrorsException e) {
                errors.merge(e.getErrors());
                putBinding(invalidBinding(injector, key, source));
                return null;
            }
            uninitializedBindings.add(new Runnable() {

                @Override
                public void run() {
                    try {
                        ((InjectorImpl) binding.getInjector()).initializeBinding(binding, errors.withSource(source));
                    } catch (ErrorsException e) {
                        errors.merge(e.getErrors());
                    }
                }
            });
            return null;
        }

        @Override
        public Void visit(ExposedBinding<? extends T> binding) {
            throw new IllegalArgumentException("Cannot apply a non-module element");
        }

        @Override
        public Void visit(ConvertedConstantBinding<? extends T> binding) {
            throw new IllegalArgumentException("Cannot apply a non-module element");
        }

        @Override
        public Void visit(ConstructorBinding<? extends T> binding) {
            throw new IllegalArgumentException("Cannot apply a non-module element");
        }

        @Override
        public Void visit(ProviderBinding<? extends T> binding) {
            throw new IllegalArgumentException("Cannot apply a non-module element");
        }
    });
    return true;
}

Example 2 with BindingImpl

use of org.elasticsearch.common.inject.internal.BindingImpl in project elasticsearch by elastic.

the class InjectorImpl method createJustInTimeBinding.

/**
     * Returns a new just-in-time binding created by resolving {@code key}. The strategies used to
     * create just-in-time bindings are:
     * <ol>
     * <li>Internalizing Providers. If the requested binding is for {@code Provider<T>}, we delegate
     * to the binding for {@code T}.
     * <li>Converting constants.
     * <li>ImplementedBy and ProvidedBy annotations. Only for unannotated keys.
     * <li>The constructor of the raw type. Only for unannotated keys.
     * </ol>
     *
     * @throws org.elasticsearch.common.inject.internal.ErrorsException
     *          if the binding cannot be created.
     */
<T> BindingImpl<T> createJustInTimeBinding(Key<T> key, Errors errors) throws ErrorsException {
    if (state.isBlacklisted(key)) {
        throw errors.childBindingAlreadySet(key).toException();
    }
    // Handle cases where T is a Provider<?>.
    if (isProvider(key)) {
        // These casts are safe. We know T extends Provider<X> and that given Key<Provider<X>>,
        // createProviderBinding() will return BindingImpl<Provider<X>>.
        @SuppressWarnings("unchecked") BindingImpl binding = createProviderBinding((Key) key, errors);
        return binding;
    }
    // Handle cases where T is a MembersInjector<?>
    if (isMembersInjector(key)) {
        // These casts are safe. T extends MembersInjector<X> and that given Key<MembersInjector<X>>,
        // createMembersInjectorBinding() will return BindingImpl<MembersInjector<X>>.
        @SuppressWarnings("unchecked") BindingImpl binding = createMembersInjectorBinding((Key) key, errors);
        return binding;
    }
    // Try to convert a constant string binding to the requested type.
    BindingImpl<T> convertedBinding = convertConstantStringBinding(key, errors);
    if (convertedBinding != null) {
        return convertedBinding;
    }
    // If the key has an annotation...
    if (key.hasAnnotationType()) {
        // Look for a binding without annotation attributes or return null.
        if (key.hasAttributes()) {
            try {
                Errors ignored = new Errors();
                return getBindingOrThrow(key.withoutAttributes(), ignored);
            } catch (ErrorsException ignored) {
            // throw with a more appropriate message below
            }
        }
        throw errors.missingImplementation(key).toException();
    }
    Object source = key.getTypeLiteral().getRawType();
    BindingImpl<T> binding = createUnitializedBinding(key, Scoping.UNSCOPED, source, errors);
    initializeBinding(binding, errors);
    return binding;
}