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.adapter.tpcds;
  
  import org.apache.calcite.schema.Schema;
  import org.apache.calcite.schema.SchemaFactory;
  import org.apache.calcite.schema.SchemaPlus;
  import org.apache.calcite.util.Util;
  
  import java.util.Map;
  
  /**
   * Factory that creates a {@link TpcdsSchema}.
   *
   * <p>Allows a custom schema to be included in a model.json file.
   */
  @SuppressWarnings("UnusedDeclaration")
  public class TpcdsSchemaFactory implements SchemaFactory {
    // public constructor, per factory contract
    public TpcdsSchemaFactory() {
    }
  
    @Override public Schema create(SchemaPlus parentSchema, String name,
        Map<String, Object> operand) {
      @SuppressWarnings("RawTypeCanBeGeneric") final Map map = operand;
      double scale = Util.first((Double) map.get("scale"), 1D);
      return new TpcdsSchema(scale);
    }
  }
  