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   *   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
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   ****************************************************************/
  package org.apache.cayenne.datasource;
  
  import java.io.PrintWriter;
  import java.sql.Connection;
  import java.sql.SQLException;
  import java.sql.SQLFeatureNotSupportedException;
  import java.util.logging.Logger;
  
  import javax.sql.DataSource;
  
  /**
   * A DataSource wrapper that prevents callers from obtaining connections from
   * another {@link DataSource}.
   * 
   * @since 4.0
   */
  class StoppedDataSource implements DataSource {
  
  	private DataSource dataSource;
  
  	public StoppedDataSource(DataSource dataSource) {
  		this.dataSource = dataSource;
  	}
  
  	@Override
  	public Connection getConnection() throws SQLException {
  		throw new SQLException("DataSource is stopped");
  	}
  
  	@Override
  	public Connection getConnection(String arg0, String arg1) throws SQLException {
  		throw new SQLException("DataSource is stopped");
  	}
  
  	@Override
  	public PrintWriter getLogWriter() throws SQLException {
  		return dataSource.getLogWriter();
  	}
  
  	@Override
  	public int getLoginTimeout() throws SQLException {
  		return dataSource.getLoginTimeout();
  	}
  
  	@Override
  	public boolean isWrapperFor(Class<?> iface) throws SQLException {
  		return (StoppedDataSource.class.equals(iface)) ? true : dataSource.isWrapperFor(iface);
  	}
  
  	@Override
  	public void setLogWriter(PrintWriter arg0) throws SQLException {
  		dataSource.setLogWriter(arg0);
  	}
  
  	@Override
  	public void setLoginTimeout(int arg0) throws SQLException {
  		dataSource.setLoginTimeout(arg0);
  	}
  
  	@SuppressWarnings("unchecked")
  	@Override
  	public <T> T unwrap(Class<T> iface) throws SQLException {
  		return StoppedDataSource.class.equals(iface) ? (T) this : dataSource.unwrap(iface);
  	}
  
  	@Override
  	public Logger getParentLogger() throws SQLFeatureNotSupportedException {
  		return dataSource.getParentLogger();
  	}
  }
  