org.apache.shiro.authc
Class ConcurrentAccessException

java.lang.Object
  extended by java.lang.Throwable
      extended by java.lang.Exception
          extended by java.lang.RuntimeException
              extended by org.apache.shiro.ShiroException
                  extended by org.apache.shiro.authc.AuthenticationException
                      extended by org.apache.shiro.authc.AccountException
                          extended by org.apache.shiro.authc.ConcurrentAccessException
All Implemented Interfaces:
Serializable

public class ConcurrentAccessException
extends AccountException

Thrown when an authentication attempt has been received for an account that has already been authenticated (i.e. logged-in), and the system is configured to prevent such concurrent access.

This is useful when an application must ensure that only one person is logged-in to a single account at any given time.

Sometimes account names and passwords are lazily given away to many people for easy access to a system. Such behavior is undesirable in systems where users are accountable for their actions, such as in government applications, or when licensing agreements must be maintained, such as those which only allow 1 user per paid license.

By disallowing concurrent access, such systems can ensure that each authenticated session corresponds to one and only one user at any given time.

Since:
0.1
See Also:
Serialized Form

Constructor Summary
ConcurrentAccessException()
          Creates a new ConcurrentAccessException.
ConcurrentAccessException(String message)
          Constructs a new ConcurrentAccessException.
ConcurrentAccessException(String message, Throwable cause)
          Constructs a new ConcurrentAccessException.
ConcurrentAccessException(Throwable cause)
          Constructs a new ConcurrentAccessException.
 
Method Summary
 
Methods inherited from class java.lang.Throwable
fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ConcurrentAccessException

public ConcurrentAccessException()
Creates a new ConcurrentAccessException.


ConcurrentAccessException

public ConcurrentAccessException(String message)
Constructs a new ConcurrentAccessException.

Parameters:
message - the reason for the exception

ConcurrentAccessException

public ConcurrentAccessException(Throwable cause)
Constructs a new ConcurrentAccessException.

Parameters:
cause - the underlying Throwable that caused this exception to be thrown.

ConcurrentAccessException

public ConcurrentAccessException(String message,
                                 Throwable cause)
Constructs a new ConcurrentAccessException.

Parameters:
message - the reason for the exception
cause - the underlying Throwable that caused this exception to be thrown.


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