Examples of com.google.inject.Scope

com.google.inject.Scope
A scope is a level of visibility that instances provided by Guice may have. By default, an instance created by the {@link Injector} has noscope, meaning it has no state from the framework's perspective -- the {@code Injector} creates it, injects it once into the class that required it,and then immediately forgets it. Associating a scope with a particular binding allows the created instance to be "remembered" and possibly used again for other injections. @see Scopes#SINGLETON @author crazybob@google.com (Bob Lee)


    if (scoping.isNoScope()) {
      return creator;
    }


    Scope scope = scoping.getScopeInstance();


    try {
      SingletonScope.singletonCreationPerRootInjectorLock.set(injector.state.singletonCreationLock());
      Provider<T> scoped
          = scope.scope(key, new ProviderToInternalFactoryAdapter<T>(injector, creator));
      return new InternalFactoryToProviderAdapter<T>(scoped, source);
    } finally {
      SingletonScope.singletonCreationPerRootInjectorLock.set(null);
    }
  }

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            @Override public <T> Void visit(Binding<T> binding) {
              if (!overriddenKeys.remove(binding.getKey())) {
                super.visit(binding);


                // Record when a scope instance is used in a binding
                Scope scope = getScopeInstanceOrNull(binding);
                if (scope != null) {
                  scopeInstancesInUse.put(scope, binding.getSource());
                }
              }

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  ScopeBindingProcessor(Errors errors) {
    super(errors);
  }


  @Override public Boolean visit(ScopeBinding command) {
    Scope scope = command.getScope();
    Class<? extends Annotation> annotationType = command.getAnnotationType();


    if (!Annotations.isScopeAnnotation(annotationType)) {
      errors.withSource(annotationType).missingScopeAnnotation();
      // Go ahead and bind anyway so we don't get collateral errors.
    }


    if (!Annotations.isRetainedAtRuntime(annotationType)) {
      errors.withSource(annotationType)
          .missingRuntimeRetention(command.getSource());
      // Go ahead and bind anyway so we don't get collateral errors.
    }


    Scope existing = injector.state.getScope(checkNotNull(annotationType, "annotation type"));
    if (existing != null) {
      errors.duplicateScopes(existing, annotationType, scope);
    } else {
      injector.state.putAnnotation(annotationType, checkNotNull(scope, "scope"));
    }

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    if (scoping.isNoScope()) {
      return creator;
    }


    Scope scope = scoping.getScopeInstance();


    Provider<T> scoped
        = scope.scope(key, new ProviderToInternalFactoryAdapter<T>(injector, creator));
    return new InternalFactoryToProviderAdapter<T>(
        Initializables.<Provider<? extends T>>of(scoped));
  }

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    Class<? extends Annotation> scopeAnnotation = scoping.getScopeAnnotation();
    if (scopeAnnotation == null) {
      return scoping;
    }


    Scope scope = injector.state.getScope(scopeAnnotation);
    if (scope != null) {
      return forInstance(scope);
    }


    errors.scopeNotFound(scopeAnnotation);

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  public void putBinding(Key<?> key, BindingImpl<?> binding) {
    explicitBindingsMutable.put(key, binding);
  }


  public Scope getScope(Class<? extends Annotation> annotationType) {
    Scope scope = scopes.get(annotationType);
    return scope != null ? scope : parent.getScope(annotationType);
  }

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            if (scoping != null) {
                scopeAnnotation = scoping.getScopeAnnotation();


                // TODO not sure why we need this hack???
                if (scopeAnnotation == null) {
                    Scope scope = scoping.getScopeInstance();
                    if (scope instanceof HasScopeAnnotation) {
                        HasScopeAnnotation hasScopeAnnotation = (HasScopeAnnotation) scope;
                        scopeAnnotation = hasScopeAnnotation
                                .getScopeAnnotation();
                    }

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            @Override public <T> void writeBind(Binder binder, final Binding<T> binding) {
              if (!overriddenKeys.remove(binding.getKey())) {
                super.writeBind(binder, binding);


                // Record when a scope instance is used in a binding
                Scope scope = getScopeInstanceOrNull(binding);
                if (scope != null) {
                  scopeInstancesInUse.put(scope, binding.getSource());
                }
              }
            }

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  public void putBinding(Key<?> key, BindingImpl<?> binding) {
    explicitBindingsMutable.put(key, binding);
  }


  public Scope getScope(Class<? extends Annotation> annotationType) {
    Scope scope = scopes.get(annotationType);
    return scope != null ? scope : parent.getScope(annotationType);
  }

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public class RequestScopeModule extends AbstractModule
{
   @Override
   protected void configure()
   {
      bindScope(RequestScoped.class, new Scope()
      {
         @Override
         public <T> Provider<T> scope(final Key<T> key, final Provider<T> creator)
         {
            return new Provider<T>()

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com.google.inject.internal.InheritingState

com.google.inject.internal.ScopeBindingProcessor

com.google.inject.internal.Scoping

com.google.inject.util.Modules$RealOverriddenModuleBuilder

org.apache.camel.guice.inject.Injectors

org.jboss.resteasy.plugins.guice.ext.RequestScopeModule

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