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.oss.driver.internal.core.type.codec.extras.array;
  
  import com.datastax.oss.driver.api.core.ProtocolVersion;
  import com.datastax.oss.driver.api.core.type.DataTypes;
  import com.datastax.oss.driver.api.core.type.reflect.GenericType;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import java.nio.ByteBuffer;
  import java.util.Objects;
  import net.jcip.annotations.Immutable;
  
  /**
   * A codec that maps the CQL type {@code list<double>} to the Java type {@code double[]}.
   *
   * <p>Note that this codec is designed for performance and converts CQL lists <em>directly</em> to
   * {@code double[]}, thus avoiding any unnecessary boxing and unboxing of Java primitive {@code
   * double} values; it also instantiates arrays without the need for an intermediary Java {@code
   * List} object.
   */
  @Immutable
  public class DoubleListToArrayCodec extends AbstractPrimitiveListToArrayCodec<double[]> {
  
    public DoubleListToArrayCodec() {
      super(DataTypes.listOf(DataTypes.DOUBLE), GenericType.of(double[].class));
    }
  
    @Override
    public boolean accepts(@NonNull Class<?> javaClass) {
      Objects.requireNonNull(javaClass);
      return double[].class.equals(javaClass);
    }
  
    @Override
    public boolean accepts(@NonNull Object value) {
      Objects.requireNonNull(value);
      return value instanceof double[];
    }
  
    @Override
    protected int sizeOfComponentType() {
      return 8;
    }
  
    @Override
    protected void serializeElement(
        @NonNull ByteBuffer output,
        @NonNull double[] array,
        int index,
        @NonNull ProtocolVersion protocolVersion) {
      output.putDouble(array[index]);
    }
  
    @Override
    protected void deserializeElement(
        @NonNull ByteBuffer input,
        @NonNull double[] array,
        int index,
        @NonNull ProtocolVersion protocolVersion) {
      array[index] = input.getDouble();
    }
  
    @Override
    protected void formatElement(@NonNull StringBuilder output, @NonNull double[] array, int index) {
      output.append(array[index]);
    }
  
    @Override
    protected void parseElement(@NonNull String input, @NonNull double[] array, int index) {
      array[index] = Double.parseDouble(input);
    }
  
    @NonNull
    @Override
    protected double[] newInstance(int size) {
      return new double[size];
    }
  }
  