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 org.apache.calcite.sql.type;
  
  import org.apache.calcite.rel.type.RelDataType;
  import org.apache.calcite.rel.type.RelDataTypeFamily;
  
  import static java.util.Objects.requireNonNull;
  
  /**
   * SQL map type.
   */
  public class MapSqlType extends AbstractSqlType {
    //~ Instance fields --------------------------------------------------------
  
    private final RelDataType keyType;
    private final RelDataType valueType;
  
    //~ Constructors -----------------------------------------------------------
  
    /**
     * Creates a MapSqlType. This constructor should only be called
     * from a factory method.
     */
    public MapSqlType(
        RelDataType keyType, RelDataType valueType, boolean isNullable) {
      super(SqlTypeName.MAP, isNullable, null);
      this.keyType = requireNonNull(keyType, "keyType");
      this.valueType = requireNonNull(valueType, "valueType");
      computeDigest();
    }
  
    //~ Methods ----------------------------------------------------------------
  
    @Override public RelDataType getValueType() {
      return valueType;
    }
  
    @Override public RelDataType getKeyType() {
      return keyType;
    }
  
    // implement RelDataTypeImpl
    @Override protected void generateTypeString(StringBuilder sb, boolean withDetail) {
      sb.append("(")
          .append(
              withDetail
                  ? keyType.getFullTypeString()
                  : keyType.toString())
          .append(", ")
          .append(
              withDetail
                  ? valueType.getFullTypeString()
                  : valueType.toString())
          .append(") MAP");
    }
  
    // implement RelDataType
    @Override public RelDataTypeFamily getFamily() {
      return this;
    }
  }
  