/**
    * Copyright 2005-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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 org.kuali.rice.krad.data.config;
  
  import org.apache.log4j.Logger;
  import org.kuali.rice.krad.data.KradDataServiceLocator;
  import org.kuali.rice.krad.data.provider.Provider;
  import org.kuali.rice.krad.data.provider.ProviderRegistry;
  import org.springframework.beans.BeansException;
  import org.springframework.beans.factory.InitializingBean;
  import org.springframework.context.ApplicationContext;
  import org.springframework.context.ApplicationContextAware;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Provides method to register Providers outside of ModuleConfiguration
   */
  public class ProviderRegistrationFactory implements InitializingBean{
      private static final Logger LOG = Logger.getLogger(ProviderRegistrationFactory.class);
  
      protected ProviderRegistry providerRegistry;
  
      @SuppressWarnings("unchecked")
      protected List<Provider> providers = Collections.unmodifiableList(Collections.EMPTY_LIST);
  
      @Override
      public void afterPropertiesSet() throws Exception {
          if ( getProviders() != null ) {
              if ( getProviderRegistry() != null ) {
                  for ( Provider provider : getProviders() ) {
                      LOG.info( "Registering data module provider for "+ provider);
                      getProviderRegistry().registerProvider(provider);
                  }
              } else {
                  LOG.error( "Provider registry not initialized.");
              }
          }
      }
  
      /**
       * Sets the list of providers for this module
       * @param providers list of providers
       */
      public void setProviders(List<Provider> providers) {
          this.providers = Collections.unmodifiableList(new ArrayList<Provider>(providers));
      }
  
      public List<Provider> getProviders() {
          return providers;
      }
  
      public ProviderRegistry getProviderRegistry() {
          if(this.providerRegistry == null){
              return KradDataServiceLocator.getProviderRegistry();
          }
          return this.providerRegistry;
      }
  
      public void setProviderRegistry(ProviderRegistry providerRegistry) {
          this.providerRegistry = providerRegistry;
      }
  }