/*
 * 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.driver.core;

/** A value for a Tuple. */
public class TupleValue extends AbstractAddressableByIndexData<TupleValue> {

  private final TupleType type;

  /**
   * Builds a new value for a tuple.
   *
   * @param type the {@link TupleType} instance defining this tuple's components.
   */
  TupleValue(TupleType type) {
    super(type.getProtocolVersion(), type.getComponentTypes().size());
    this.type = type;
  }

  protected DataType getType(int i) {
    return type.getComponentTypes().get(i);
  }

  @Override
  protected String getName(int i) {
    // This is used for error messages
    return "component " + i;
  }

  @Override
  protected CodecRegistry getCodecRegistry() {
    return type.getCodecRegistry();
  }

  /**
   * The tuple type this is a value of.
   *
   * @return The tuple type this is a value of.
   */
  public TupleType getType() {
    return type;
  }

  @Override
  public boolean equals(Object o) {
    if (!(o instanceof TupleValue)) return false;

    TupleValue that = (TupleValue) o;
    if (!type.equals(that.type)) return false;

    return super.equals(o);
  }

  @Override
  public int hashCode() {
    return super.hashCode();
  }

  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    TypeCodec<Object> codec = getCodecRegistry().codecFor(type);
    sb.append(codec.format(this));
    return sb.toString();
  }
}
