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.runtime.rtti;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.util.Arrays;
  
  /** Runtime type information which contains some type parameters. */
  public class GenericSqlTypeRtti extends RuntimeTypeInformation {
    final RuntimeTypeInformation[] typeArguments;
  
    public GenericSqlTypeRtti(RuntimeSqlTypeName typeName, RuntimeTypeInformation... typeArguments) {
      super(typeName);
      assert !typeName.isScalar() : "Generic type cannot be a scalar type " + typeName;
      this.typeArguments = typeArguments;
    }
  
    @Override public String getTypeString()  {
      switch (this.typeName) {
      case ARRAY:
        return "ARRAY";
      case MAP:
        return "MAP";
      case MULTISET:
        return "MULTISET";
      default:
        throw new RuntimeException("Unexpected type " + this.typeName);
      }
    }
  
    // This method is used to serialize the type in Java code implementations,
    // so it should produce a computation that reconstructs the type at runtime
    @Override public String toString() {
      StringBuilder builder = new StringBuilder();
      builder.append("new GenericSqlTypeRtti(")
          .append(this.getTypeString());
      for (RuntimeTypeInformation arg : this.typeArguments) {
        builder.append(", ");
        builder.append(arg.toString());
      }
      builder.append(")");
      return builder.toString();
    }
  
    @Override public boolean equals(@Nullable Object o) {
      if (this == o) {
        return true;
      }
      if (o == null || getClass() != o.getClass()) {
        return false;
      }
  
      GenericSqlTypeRtti that = (GenericSqlTypeRtti) o;
      return typeName == that.typeName && Arrays.equals(typeArguments, that.typeArguments);
    }
  
    @Override public int hashCode() {
      return Arrays.hashCode(typeArguments);
    }
  
    public RuntimeTypeInformation getTypeArgument(int index) {
      return typeArguments[index];
    }
  
    public int getArgumentCount() {
      return typeArguments.length;
    }
  }
  