/*
    * Copyright 2016 The Lannister Project
    * 
    * 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 net.anyflow.lannister.serialization;
  
  import java.io.IOException;
  import java.util.stream.Collectors;
  
  import com.fasterxml.jackson.core.JsonGenerator;
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.SerializerProvider;
  
  import net.anyflow.lannister.cluster.Map;
  
  public final class MapSerializer<K, V> extends com.fasterxml.jackson.databind.JsonSerializer<Map<K, V>> {
  	@Override
  	public void serialize(Map<K, V> value, JsonGenerator gen, SerializerProvider serializers)
  			throws IOException, JsonProcessingException {
  		gen.writeObject(value.keySet().stream().map(key -> value.get(key)).collect(Collectors.toList()));
  	}
  }