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      1 /**
      2  * Copyright (C) 2010 Google Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.google.inject.throwingproviders;
     18 
     19 import static java.lang.annotation.ElementType.METHOD;
     20 import static java.lang.annotation.RetentionPolicy.RUNTIME;
     21 
     22 import java.lang.annotation.Documented;
     23 import java.lang.annotation.Retention;
     24 import java.lang.annotation.Target;
     25 
     26 /**
     27  * Annotates methods of a {@link com.google.inject.Module} to create a
     28  * {@link CheckedProvider} method binding that can throw exceptions. The
     29  * method's return type is bound to a {@link CheckedProvider} that can be
     30  * injected. Guice will pass dependencies to the method as parameters. Install
     31  * {@literal @}CheckedProvides methods by using
     32  * {@link ThrowingProviderBinder#forModule(com.google.inject.Module)} on the
     33  * module where the methods are declared.
     34  *
     35  * @author sameb (at) google.com (Sam Berlin)
     36  * @since 3.0
     37  */
     38 @Documented @Target(METHOD) @Retention(RUNTIME)
     39 public @interface CheckedProvides {
     40 
     41   /**
     42    * The interface that provides this value, a subinterface of {@link CheckedProvider}.
     43    */
     44   Class<? extends CheckedProvider> value();
     45 
     46   /**
     47    * Whether exceptions should be put into the Guice scope.
     48    * Default behavior is that exceptions are scoped.
     49    *
     50    * @since 4.0
     51    */
     52   boolean scopeExceptions() default true;
     53 }
     54