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
   *
   * https://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.cayenne.tools;
  
  /**
   * @since 4.0
   */
  
  import org.apache.commons.io.FileUtils;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.OutputStream;
  import java.sql.DriverManager;
  import java.sql.SQLException;
  
  public class DerbyManager {
  
      public static final OutputStream DEV_NULL = new OutputStream() {
  
          @Override
          public void write(int b) {
          }
      };
  
      DerbyManager(String location) {
  
          System.setProperty("derby.stream.error.field", DerbyManager.class.getName() + ".DEV_NULL");
  
          File derbyDir = new File(location);
          if (derbyDir.isDirectory()) {
              try {
                  FileUtils.deleteDirectory(derbyDir);
              } catch (IOException e) {
                  throw new RuntimeException(e);
              }
          }
      }
  
      void shutdown() {
          try {
              DriverManager.getConnection("jdbc:derby:;shutdown=true");
          } catch (SQLException e) {
              // the exception is actually expected on shutdown... go figure...
          }
      }
  }
  