| /******************************************************************************* |
| * Copyright (c) 2010, 2013 Sonatype, Inc. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Stuart McCulloch (Sonatype, Inc.) - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.sisu.inject; |
| |
| import com.google.inject.Binding; |
| import com.google.inject.ImplementedBy; |
| import com.google.inject.Injector; |
| import com.google.inject.Key; |
| import com.google.inject.ProvidedBy; |
| import com.google.inject.TypeLiteral; |
| |
| /** |
| * Source of "implicit" bindings; includes @{@link ImplementedBy}, @{@link ProvidedBy}, and concrete types. |
| */ |
| final class ImplicitBindings |
| { |
| // ---------------------------------------------------------------------- |
| // Implementation fields |
| // ---------------------------------------------------------------------- |
| |
| private final Iterable<BindingPublisher> publishers; |
| |
| // ---------------------------------------------------------------------- |
| // Constructors |
| // ---------------------------------------------------------------------- |
| |
| ImplicitBindings( final Iterable<BindingPublisher> publishers ) |
| { |
| this.publishers = publishers; |
| } |
| |
| // ---------------------------------------------------------------------- |
| // Public methods |
| // ---------------------------------------------------------------------- |
| |
| @SuppressWarnings( { "unchecked", "rawtypes" } ) |
| public <T> Binding<T> get( final TypeLiteral<T> type ) |
| { |
| final Key implicitKey = TypeArguments.implicitKey( type.getRawType() ); |
| for ( final BindingPublisher p : publishers ) |
| { |
| if ( p instanceof InjectorPublisher ) |
| { |
| // first round: check for any re-written implicit bindings |
| final Injector i = ( (InjectorPublisher) p ).getInjector(); |
| final Binding binding = i.getBindings().get( implicitKey ); |
| if ( null != binding ) |
| { |
| Logs.trace( "Using implicit binding: {} from: <>", binding, i ); |
| return binding; |
| } |
| } |
| } |
| |
| final Key justInTimeKey = Key.get( type ); |
| for ( final BindingPublisher p : publishers ) |
| { |
| if ( p instanceof InjectorPublisher ) |
| { |
| // second round: fall back to just-in-time binding lookup |
| final Injector i = ( (InjectorPublisher) p ).getInjector(); |
| try |
| { |
| final Binding binding = i.getBinding( justInTimeKey ); |
| if ( InjectorPublisher.isVisible( binding ) ) |
| { |
| Logs.trace( "Using just-in-time binding: {} from: <>", binding, i ); |
| return binding; |
| } |
| } |
| catch ( final RuntimeException e ) // NOPMD |
| { |
| Logs.trace( "Problem with just-in-time binding: {}", justInTimeKey, e ); |
| } |
| catch ( final LinkageError e ) // NOPMD |
| { |
| Logs.trace( "Problem with just-in-time binding: {}", justInTimeKey, e ); |
| } |
| } |
| } |
| return null; |
| } |
| } |