content: /**
   * 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.
   */
  package backtype.storm.serialization;
  
  import backtype.storm.tuple.Values;
  import backtype.storm.utils.ListDelegate;
  import com.esotericsoftware.kryo.Kryo;
  import com.esotericsoftware.kryo.io.Output;
  import java.io.IOException;
  import java.util.List;
  import java.util.Map;
  
  public class KryoValuesSerializer {
      Kryo _kryo;
      ListDelegate _delegate;
      Output _kryoOut;
  
      public KryoValuesSerializer(Map conf) {
          _kryo = SerializationFactory.getKryo(conf);
          _delegate = new ListDelegate();
          _kryoOut = new Output(2000, 2000000000);
      }
  
      public void serializeInto(List<Object> values, Output out) throws IOException {
      	if (values instanceof Values) {
      		Values val = (Values) values;
              out.writeInt(val.type, true);
      	    switch (val.type) {
      	        case Values.OBJECT:
      	        	serialize(values, out);
      	        	break;
      	        case Values.STRING:
      	        	serializeStrings(values, out);
      	        	break;
      	        case Values.INTEGER:
      	        	serializeIntegers(values, out);
      	        	break;
      	    }
      	} else {
      		out.writeInt(Values.OBJECT, true);
      		serialize(values, out);
      	}
      }
  
      public void serialize(List<Object> values, Output out) throws IOException {
          // this ensures that list of values is always written the same way, regardless
          // of whether it's a java collection or one of clojure's persistent collections
          // (which have different serializers)
          // Doing this lets us deserialize as ArrayList and avoid writing the class here
          _delegate.setDelegate(values);
          _kryo.writeObject(out, _delegate);
      }
  
      public byte[] serialize(List<Object> values) throws IOException {
          _kryoOut.clear();
          serializeInto(values, _kryoOut);
          return _kryoOut.toBytes();
      }
  
      public byte[] serializeObject(Object obj) {
          _kryoOut.clear();
          _kryo.writeClassAndObject(_kryoOut, obj);
          return _kryoOut.toBytes();
      }
  
      private void serializeStrings(List<Object> values, Output out) {
      	out.writeInt(values.size(), true);
      	for (Object o : values) {
      		String str = (String) o;
      		out.writeString(str);
      	}
      }
  
      private void serializeIntegers(List<Object> values, Output out) {
      	out.writeInt(values.size(), true);
      	for (Object o : values) {
      		Integer i = (Integer) o;
      		out.writeInt(i, true);
      	}
      }
  }
  