content: /*
   * Copyright 2010 Proofpoint, Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package io.airlift.configuration;
  
  import com.google.common.collect.ImmutableList;
  import com.google.inject.Binder;
  import com.google.inject.Module;
  
  import java.util.List;
  
  import static com.google.common.base.Preconditions.checkArgument;
  
  public interface ConfigurationAwareModule
          extends Module
  {
      void setConfigurationFactory(ConfigurationFactory configurationFactory);
  
      static Module combine(Module... modules)
      {
          return combine(ImmutableList.copyOf(modules));
      }
  
      static Module combine(Iterable<Module> modulesIterable)
      {
          List<Module> modules = ImmutableList.copyOf(modulesIterable);
          checkArgument(!modules.isEmpty(), "no modules provided");
          if (modules.size() == 1) {
              return modules.get(0);
          }
          return new AbstractConfigurationAwareModule()
          {
              @Override
              protected void setup(Binder binder)
              {
                  for (Module module : modules) {
                      install(module);
                  }
              }
          };
      }
  }
  