/**
 * 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 org.apache.tajo.type;

import org.apache.tajo.common.TajoDataTypes;

import java.util.Objects;

public class Map extends Type {
  private final Type keyType;
  private final Type valueType;

  public Map(Type keyType, Type valueType) {
    this.keyType = keyType;
    this.valueType = valueType;
  }

  public Type keyType() {
    return this.keyType;
  }

  public Type valueType() {
    return this.valueType;
  }

  @Override
  public TajoDataTypes.Type baseType() {
    return TajoDataTypes.Type.MAP;
  }

  @Override
  public String toString() {
    return "map<" + keyType + "," + valueType + ">";
  }

  @Override
  public int hashCode() {
    return Objects.hash(baseType(), keyType, valueType);
  }

  @Override
  public boolean equals(Object object) {
    if (object instanceof Map) {
      Map other = (Map) object;
      return keyType.equals(other.keyType) && valueType.equals(other.valueType);
    }

    return false;
  }
}