de.aristaflow.adept2.util.locking

Class ReleaseLockException

java.lang.Object

java.lang.Throwable

java.lang.Exception

de.aristaflow.adept2.util.LockException

de.aristaflow.adept2.util.locking.ReleaseLockException

All Implemented Interfaces:

java.io.Serializable

public class ReleaseLockException
extends LockException

An ReleaseLockException indicates that the lock on an object can not be released since the releasing object does not have the lock. This is usually a programming error since unlocking should always have a corresponding lock some time before.

Author:

Ulrich Kreher

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	locked Whether the object is already locked (but not by the lock releasing object) or is not locked at all.
protected java.lang.Object	lockReleasingObject The object trying to release the lock (but failing).

Constructor Summary

Constructors

Constructor and Description
ReleaseLockException(java.lang.Object lockedObject, boolean locked, java.lang.Object lockReleasingObject, java.lang.String lockType) Creates a new lock exception indicating that the designated lockReleasingObject can not unlock the designated lockedObject but the current lock owner is unknown or the object is not locked at all.
ReleaseLockException(java.lang.Object lockedObject, java.lang.Object lockOwner, java.lang.Object lockReleasingObject, java.lang.String lockType) Creates a new lock exception indicating that the designated lockReleasingObject can not unlock the designated lockedObject since it does not have the lock but the lockOwner has.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	getLockReleasingObject() Returns the object that wants to release the lock.
java.lang.String	getMessage()
boolean	isLocked() Wether the exception occurred due to another object having the lock (true) or having no lock at all (false).

Methods inherited from class de.aristaflow.adept2.util.LockException

getLockedObject, getLockOwner, getLockType

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

locked

protected final boolean locked

Whether the object is already locked (but not by the lock releasing object) or is not locked at all.

lockReleasingObject

protected final java.lang.Object lockReleasingObject

The object trying to release the lock (but failing).

Constructor Detail

ReleaseLockException

public ReleaseLockException(java.lang.Object lockedObject,
                            boolean locked,
                            java.lang.Object lockReleasingObject,
                            java.lang.String lockType)

Creates a new lock exception indicating that the designated lockReleasingObject can not unlock the designated lockedObject but the current lock owner is unknown or the object is not locked at all.

Parameters:

lockedObject - The object that is currently locked and that should be unlocked.

locked - Whether the object is locked (and the lock owner is unknown).

lockReleasingObject - The object that wanted to release the lock which led to the created exception.

lockType - The type of the lock which can not be released.

ReleaseLockException

public ReleaseLockException(java.lang.Object lockedObject,
                            java.lang.Object lockOwner,
                            java.lang.Object lockReleasingObject,
                            java.lang.String lockType)

Creates a new lock exception indicating that the designated lockReleasingObject can not unlock the designated lockedObject since it does not have the lock but the lockOwner has.

Parameters:

lockedObject - The object that is currently locked and that should be unlocked.

lockOwner - The object that currently locks the object.

lockReleasingObject - The object that wanted to release the lock which led to the created exception.

lockType - The type of the lock which can not be released.

Method Detail

isLocked

public boolean isLocked()

Wether the exception occurred due to another object having the lock (true) or having no lock at all (false).

Returns:

Whether the object is already locked by another object or not locked at all.

getLockReleasingObject

public java.lang.Object getLockReleasingObject()

Returns the object that wants to release the lock.

Returns:

The object that wants to release the lock.

getMessage

public java.lang.String getMessage()

Overrides:

getMessage in class java.lang.Throwable