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.chinook;
  
  import com.google.common.io.CharStreams;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.nio.charset.StandardCharsets;
  import java.sql.Connection;
  import java.sql.DriverManager;
  import java.sql.SQLException;
  import java.util.Properties;
  
  import static java.util.Objects.requireNonNull;
  
  /**
   * Provider of calcite connections for end-to-end tests.
   */
  public class CalciteConnectionProvider {
  
    public static final String DRIVER_URL = "jdbc:calcite:";
  
    public Connection connection() throws IOException, SQLException {
      return DriverManager.getConnection(DRIVER_URL, provideConnectionInfo());
    }
  
    public Properties provideConnectionInfo() throws IOException {
      Properties info = new Properties();
      info.setProperty("lex", "MYSQL");
      info.setProperty("model", "inline:" + provideSchema());
      info.setProperty("conformance", "MYSQL_5");
      return info;
    }
  
    private String provideSchema() throws IOException {
      final InputStream stream =
          getClass().getResourceAsStream("/chinook/chinook.json");
      requireNonNull(stream, "stream");
      return CharStreams.toString(new InputStreamReader(stream, StandardCharsets.UTF_8));
    }
  
  }
  