001    package org.odmg;
002    
003    
004    
005    /**
006    
007     * This exception is thrown when an attempt is made to call a method
008    
009     * on a Database that has been closed or has not been opened.
010    
011     * @author      David Jordan (as Java Editor of the Object Data Management Group)
012    
013     * @version ODMG 3.0
014    
015     * @see org.odmg.Database
016    
017     */
018    
019    
020    
021    public class DatabaseClosedException extends ODMGRuntimeException
022    
023    {
024    
025        /**
026    
027         * Construct an instance of the exception without a message.
028    
029         */
030    
031        public DatabaseClosedException()
032    
033        {
034    
035            super();
036    
037        }
038    
039    
040    
041        /**
042    
043         * Construct an instance of the exception with the provided message.
044    
045         *  @param  msg     A message indicating why the exception occurred.
046    
047         */
048    
049        public DatabaseClosedException(String msg)
050    
051        {
052    
053            super(msg);
054    
055        }
056    
057    }
058