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 com.datastax.dse.driver.internal.core.graph.binary;
  
  import com.datastax.oss.driver.api.core.data.TupleValue;
  import com.datastax.oss.driver.api.core.type.DataType;
  import com.datastax.oss.driver.api.core.type.TupleType;
  import com.datastax.oss.driver.internal.core.context.DefaultDriverContext;
  import java.io.IOException;
  import org.apache.tinkerpop.gremlin.structure.io.Buffer;
  import org.apache.tinkerpop.gremlin.structure.io.binary.GraphBinaryReader;
  import org.apache.tinkerpop.gremlin.structure.io.binary.GraphBinaryWriter;
  
  public class TupleValueSerializer extends AbstractDynamicGraphBinaryCustomSerializer<TupleValue> {
  
    private final DefaultDriverContext driverContext;
  
    public TupleValueSerializer(DefaultDriverContext driverContext) {
      this.driverContext = driverContext;
    }
  
    @Override
    public String getTypeName() {
      return GraphBinaryModule.GRAPH_BINARY_TUPLE_VALUE_TYPE_NAME;
    }
  
    @Override
    public TupleValue readDynamicCustomValue(Buffer buffer, GraphBinaryReader context)
        throws IOException {
      // read the type first
      DataType type = ComplexTypeSerializerUtil.decodeTypeDefinition(buffer, driverContext);
  
      assert type instanceof TupleType
          : "GraphBinary TupleValue deserializer was called on a value that is not encoded as a TupleValue.";
  
      TupleType tupleType = (TupleType) type;
      TupleValue value = tupleType.newValue();
  
      // then decode the values from the buffer
      return ComplexTypeSerializerUtil.decodeValue(
          buffer, value, tupleType.getComponentTypes().size());
    }
  
    @Override
    public void writeDynamicCustomValue(TupleValue value, Buffer buffer, GraphBinaryWriter context)
        throws IOException {
      // write type first in native protocol
      ComplexTypeSerializerUtil.encodeTypeDefinition(value.getType(), buffer, driverContext);
  
      // write value after
      ComplexTypeSerializerUtil.encodeValue(value, buffer);
    }
  }
  