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.avatica;
  
  import net.hydromatic.scott.data.hsqldb.ScottHsqldb;
  
  import java.util.concurrent.locks.ReentrantLock;
  
  /** Information necessary to create a JDBC connection. Specify one to run
   * tests against a different database. (hsqldb is the default.) */
  public class ConnectionSpec {
    public final String url;
    public final String username;
    public final String password;
    public final String driver;
  
    // CALCITE-687 HSQLDB seems to fail oddly when multiple tests are run concurrently
    private static final ReentrantLock HSQLDB_LOCK = new ReentrantLock();
  
    public ConnectionSpec(String url, String username, String password,
        String driver) {
      this.url = url;
      this.username = username;
      this.password = password;
      this.driver = driver;
    }
  
    public static final ConnectionSpec HSQLDB =
        new ConnectionSpec(ScottHsqldb.URI, ScottHsqldb.USER,
            ScottHsqldb.PASSWORD, "org.hsqldb.jdbcDriver");
  
    /**
     * Return a lock used for controlling concurrent access to the database as it has been observed
     * that concurrent access is causing problems with HSQLDB.
     */
    public static ReentrantLock getDatabaseLock() {
      return HSQLDB_LOCK;
    }
  }
  
  // End ConnectionSpec.java
  