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.arrow;
  
  import org.apache.calcite.model.ModelHandler;
  import org.apache.calcite.schema.Schema;
  import org.apache.calcite.schema.SchemaFactory;
  import org.apache.calcite.schema.SchemaPlus;
  
  import java.io.File;
  import java.util.Map;
  
  /**
   * Factory that creates an {@link ArrowSchema}.
   */
  public class ArrowSchemaFactory implements SchemaFactory {
  
    @Override public Schema create(SchemaPlus parentSchema, String name,
        Map<String, Object> operand) {
      final File baseDirectory =
          (File) operand.get(ModelHandler.ExtraOperand.BASE_DIRECTORY.camelName);
      final String directory = (String) operand.get("directory");
      File directoryFile = null;
      if (directory != null) {
        directoryFile = new File(directory);
      }
      if (baseDirectory != null) {
        if (directoryFile == null) {
          directoryFile = baseDirectory;
        } else if (!directoryFile.isAbsolute()) {
          directoryFile = new File(baseDirectory, directoryFile.getPath());
        }
      }
      if (directoryFile == null) {
        throw new RuntimeException("no directory");
      }
      return new ArrowSchema(directoryFile);
    }
  }
  