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.data;
  
  import com.datastax.oss.driver.api.core.ProtocolVersion;
  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.api.core.type.codec.registry.CodecRegistry;
  import com.datastax.oss.driver.shaded.guava.common.base.Preconditions;
  import com.datastax.oss.protocol.internal.util.Bytes;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import edu.umd.cs.findbugs.annotations.Nullable;
  import java.io.InvalidObjectException;
  import java.io.ObjectInputStream;
  import java.io.Serializable;
  import java.nio.ByteBuffer;
  import java.util.Objects;
  import net.jcip.annotations.NotThreadSafe;
  
  /**
   * Implementation note: contrary to most GettableBy* and SettableBy* implementations, this class is
   * mutable.
   */
  @NotThreadSafe
  public class DefaultTupleValue implements TupleValue, Serializable {
  
    private static final long serialVersionUID = 1;
    private final TupleType type;
    private final ByteBuffer[] values;
  
    public DefaultTupleValue(@NonNull TupleType type) {
      this(type, new ByteBuffer[type.getComponentTypes().size()]);
    }
  
    public DefaultTupleValue(@NonNull TupleType type, @NonNull Object... values) {
      this(
          type,
          ValuesHelper.encodeValues(
              values,
              type.getComponentTypes(),
              type.getAttachmentPoint().getCodecRegistry(),
              type.getAttachmentPoint().getProtocolVersion()));
    }
  
    private DefaultTupleValue(TupleType type, ByteBuffer[] values) {
      Preconditions.checkNotNull(type);
      this.type = type;
      this.values = values;
    }
  
    @NonNull
    @Override
    public TupleType getType() {
      return type;
    }
  
    @Override
    public int size() {
      return values.length;
    }
  
    @Override
    public ByteBuffer getBytesUnsafe(int i) {
      return values[i];
    }
  
    @NonNull
    @Override
    public TupleValue setBytesUnsafe(int i, @Nullable ByteBuffer v) {
      values[i] = v;
      return this;
    }
  
    @NonNull
    @Override
    public DataType getType(int i) {
      return type.getComponentTypes().get(i);
    }
  
    @NonNull
    @Override
    public CodecRegistry codecRegistry() {
      return type.getAttachmentPoint().getCodecRegistry();
    }
  
    @NonNull
    @Override
    public ProtocolVersion protocolVersion() {
      return type.getAttachmentPoint().getProtocolVersion();
    }
  
    /**
     * @serialData The type of the tuple, followed by an array of byte arrays representing the values
     *     (null values are represented by {@code null}).
     */
    private Object writeReplace() {
      return new SerializationProxy(this);
    }
  
    private void readObject(@SuppressWarnings("unused") ObjectInputStream stream)
        throws InvalidObjectException {
      // Should never be called since we serialized a proxy
      throw new InvalidObjectException("Proxy required");
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) {
        return true;
      }
  
      if (!(o instanceof TupleValue)) {
        return false;
      }
      TupleValue that = (TupleValue) o;
  
      if (!type.equals(that.getType())) {
        return false;
      }
  
      for (int i = 0; i < values.length; i++) {
        DataType innerThisType = type.getComponentTypes().get(i);
        DataType innerThatType = that.getType().getComponentTypes().get(i);
        if (!innerThisType.equals(innerThatType)) {
          return false;
        }
        Object thisValue =
            this.codecRegistry()
                .codecFor(innerThisType)
                .decode(this.getBytesUnsafe(i), this.protocolVersion());
        Object thatValue =
            that.codecRegistry()
                .codecFor(innerThatType)
                .decode(that.getBytesUnsafe(i), that.protocolVersion());
        if (!Objects.equals(thisValue, thatValue)) {
          return false;
        }
      }
      return true;
    }
  
    @Override
    public int hashCode() {
  
      int result = type.hashCode();
  
      for (int i = 0; i < values.length; i++) {
        DataType innerThisType = type.getComponentTypes().get(i);
        Object thisValue =
            this.codecRegistry()
                .codecFor(innerThisType)
                .decode(this.values[i], this.protocolVersion());
        if (thisValue != null) {
          result = 31 * result + thisValue.hashCode();
        }
      }
  
      return result;
    }
  
    private static class SerializationProxy implements Serializable {
  
      private static final long serialVersionUID = 1;
  
      private final TupleType type;
      private final byte[][] values;
  
      SerializationProxy(DefaultTupleValue tuple) {
        this.type = tuple.type;
        this.values = new byte[tuple.values.length][];
        for (int i = 0; i < tuple.values.length; i++) {
          ByteBuffer buffer = tuple.values[i];
          this.values[i] = (buffer == null) ? null : Bytes.getArray(buffer);
        }
      }
  
      private Object readResolve() {
        ByteBuffer[] buffers = new ByteBuffer[this.values.length];
        for (int i = 0; i < this.values.length; i++) {
          byte[] value = this.values[i];
          buffers[i] = (value == null) ? null : ByteBuffer.wrap(value);
        }
        return new DefaultTupleValue(this.type, buffers);
      }
    }
  }
  