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.activemq.store.jdbc;
  
  import java.io.IOException;
  
  import org.apache.activemq.Service;
  
  /**
   * Represents some kind of lock service to ensure that a broker is the only master
   *
   * @deprecated As of 5.7.0, use more general {@link org.apache.activemq.broker.Locker} instead
   */
  @Deprecated
  public interface DatabaseLocker extends Service {
  
      /**
       * allow the injection of a jdbc persistence adapter
       * @param adapter the persistence adapter to use
       * @throws IOException 
       */
      void setPersistenceAdapter(JDBCPersistenceAdapter adapter) throws IOException;
      
      /**
       * Used by a timer to keep alive the lock.
       * If the method returns false the broker should be terminated
       * if an exception is thrown, the lock state cannot be determined
       */
      boolean keepAlive() throws IOException;
  
      /**
       * set the delay interval in milliseconds between lock acquire attempts
       * @param lockAcquireSleepInterval the sleep interval in miliseconds
       */
      void setLockAcquireSleepInterval(long lockAcquireSleepInterval);
      
  }
  