package org.apache.fulcrum.json.jackson;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.
   */
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  import org.apache.avalon.framework.logger.LogEnabled;
  import org.apache.avalon.framework.logger.Logger;
  
  import com.fasterxml.jackson.databind.AnnotationIntrospector;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.ser.DefaultSerializerProvider;
  import com.fasterxml.jackson.databind.ser.FilterProvider;
  import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
  
  public class CacheService implements LogEnabled {
  
      AnnotationIntrospector primary;
      Map<String, FilterProvider> filters =  new ConcurrentHashMap<>();
      
      private static Logger logger;
      
      public CacheService(AnnotationIntrospector primary) {
          this.primary = primary;
      }
  
      <T> void removeFilter(Class<T> filterClass, Boolean excludeType) {
          if (filterClass == null)
              return;
          if (filters.containsKey(filterClass.getName())) {
              logger.debug("removing filter: " + filterClass.getName());
              removeCustomIntrospectorWithExternalFilterId(filterClass, excludeType);
              SimpleFilterProvider smpfilter = (SimpleFilterProvider) filters
                      .get(filterClass.getName());
              smpfilter.removeFilter(filterClass.getName());
              filters.remove(filterClass.getName());
          }
      }
      
      <T> void removeCustomIntrospectorWithExternalFilterId(
              Class<T> externalFilterId, Boolean excludeType) {
          if (primary instanceof SimpleNameIntrospector && externalFilterId != null) {
                  ((SimpleNameIntrospector) primary)
                          .removeFilteredClass(externalFilterId);
                  if (excludeType) {
                      ((SimpleNameIntrospector) primary)
                      .removeExternalFilterExcludeClass(externalFilterId);
                  }
          }
      }
  
      void cleanSerializerCache(ObjectMapper mapper) {
          if (mapper.getSerializerProvider() instanceof DefaultSerializerProvider) {
              int cachedSerProvs = ((DefaultSerializerProvider) mapper
                      .getSerializerProvider()).cachedSerializersCount();
              if (cachedSerProvs > 0) {
  //                getLogger()
  //                        .debug("flushing cachedSerializersCount:"
  //                                + cachedSerProvs);
                  ((DefaultSerializerProvider) mapper.getSerializerProvider())
                          .flushCachedSerializers();
              }
          }
      }
  
      public Map<String, FilterProvider> getFilters() {
          return filters;
      }
  
      public void setFilters(Map<String, FilterProvider> filters) {
          this.filters = filters;
      }
  
      @Override
      public void enableLogging(Logger logger) {
          CacheService.logger = logger;        
      }
  
  }