Package com.globalmentor.model

Class AbstractReadWriteLockOperation

java.lang.Object

com.globalmentor.beans.BoundPropertyObject

com.globalmentor.model.AbstractTask

com.globalmentor.model.AbstractOperation

com.globalmentor.model.AbstractReadWriteLockOperation

All Implemented Interfaces:

PropertyBindable, PropertyConstrainable, Operation, Task, Runnable, ReadWriteLock

public abstract class AbstractReadWriteLockOperation
extends AbstractOperation
implements ReadWriteLock

Abstract implementation of some operation that can be executed, with state governed by a read/write lock.

This implementation is thread-safe, providing its own read/write lock. The state is governed by this read/write lock, which can also be used for locking other operation resources.

Author:

Garret Wilson

Field Summary

Fields inherited from class com.globalmentor.beans.BoundPropertyObject

NO_PROPERTY_CHANGE_LISTENERS, NO_VETOABLE_CHANGE_LISTENERS

Fields inherited from interface com.globalmentor.model.Task

STATE_PROPERTY

Constructor Summary

Constructors

Constructor	Description
AbstractReadWriteLockOperation()	Default constructor using a reentrant read/write lock.
AbstractReadWriteLockOperation(ReadWriteLock readWriteLock)	Read write lock constructor.

Method Summary

Modifier and Type	Method	Description
TaskState	getState()
Lock	readLock()	Returns the lock used for reading.
void	setState(TaskState newState)	Sets the current state of the task.
Lock	writeLock()	Returns the lock used for writing.

Methods inherited from class com.globalmentor.model.AbstractOperation

cancel, execute, initialize, isCanceled, run

Methods inherited from class com.globalmentor.model.AbstractTask

getEventListenerManager

Methods inherited from class com.globalmentor.beans.BoundPropertyObject

addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, createPostponedPropertyChangeEvent, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, getForwardPropertyChangeListener, getPropertyChangeListeners, getPropertyChangeListeners, getPropertyChangeSupport, getRepeatPropertyChangeListener, getRepeatVetoableChangeListener, getVetoableChangeListeners, getVetoableChangeListeners, getVetoableChangeSupport, hasPropertyChangeListeners, hasVetoableChangeListeners, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, removeVetoableChangeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.globalmentor.beans.PropertyBindable

addPropertyChangeListener, addPropertyChangeListener, getPropertyChangeListeners, getPropertyChangeListeners, hasPropertyChangeListeners, removePropertyChangeListener, removePropertyChangeListener

Methods inherited from interface com.globalmentor.beans.PropertyConstrainable

addVetoableChangeListener, addVetoableChangeListener, getVetoableChangeListeners, getVetoableChangeListeners, hasVetoableChangeListeners, removeVetoableChangeListener, removeVetoableChangeListener

Constructor Details

AbstractReadWriteLockOperation

public AbstractReadWriteLockOperation()

Default constructor using a reentrant read/write lock.

AbstractReadWriteLockOperation

public AbstractReadWriteLockOperation(ReadWriteLock readWriteLock)

Read write lock constructor.

Parameters:

readWriteLock - The lock for controlling access to the properties.

Throws:

NullPointerException - if the given lock is null.

Method Details

readLock

public Lock readLock()

Returns the lock used for reading.

Specified by:

readLock in interface ReadWriteLock

Returns:

the lock used for reading.

writeLock

public Lock writeLock()

Returns the lock used for writing.

Specified by:

writeLock in interface ReadWriteLock

Returns:

the lock used for writing.

getState

public TaskState getState()

Specified by:

getState in interface Task

Overrides:

getState in class AbstractTask

Returns:

The current state of the task.

setState

public void setState(TaskState newState)

Description copied from class: AbstractTask

Sets the current state of the task. This is a bound property.

Overrides:

setState in class AbstractTask

Parameters:

newState - The new state of the task.

See Also:

• Task.STATE_PROPERTY