org.eclipse.xtext.util.concurrent
Class AbstractReadWriteAcces<P>

java.lang.Object
  org.eclipse.xtext.util.concurrent.AbstractReadWriteAcces<P>

All Implemented Interfaces:

IReadAccess<P>

Direct Known Subclasses:

XtextDocument.XtextDocumentLocker

public abstract class AbstractReadWriteAcces<P>
extends java.lang.Object
implements IReadAccess<P>

Author:

Sven Efftinge - Initial contribution and API, Jan Koehnlein

Field Summary

protected java.util.concurrent.locks.Lock	readLock
protected java.util.concurrent.locks.ReentrantReadWriteLock	rwLock
protected java.util.concurrent.locks.Lock	writeLock

Constructor Summary

AbstractReadWriteAcces()

Method Summary

protected void	afterModify(P state, java.lang.Object result, IUnitOfWork<?,P> work) is executed within the transaction right after the unit of work has been executed and delivered the result.
protected void	afterReadOnly(P state, java.lang.Object result, IUnitOfWork<?,P> work) is executed within the transaction right after the unit of work has been executed and delivered the result.
protected void	beforeModify(P state, IUnitOfWork<?,P> work) Is called before a write lock is obtained
protected void	beforeReadOnly(P state, IUnitOfWork<?,P> work) is called before a read lock is obtained
protected abstract P	getState()
<T> T	modify(IUnitOfWork<T,P> work)
<T> T	readOnly(IUnitOfWork<T,P> work)

Methods inherited from class java.lang.Object

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

Field Detail

rwLock

protected final java.util.concurrent.locks.ReentrantReadWriteLock rwLock

writeLock

protected final java.util.concurrent.locks.Lock writeLock

readLock

protected final java.util.concurrent.locks.Lock readLock

Constructor Detail

AbstractReadWriteAcces

public AbstractReadWriteAcces()

Method Detail

getState

protected abstract P getState()

readOnly

public <T> T readOnly(IUnitOfWork<T,P> work)

Specified by:

readOnly in interface IReadAccess<P>

modify

public <T> T modify(IUnitOfWork<T,P> work)

beforeModify

protected void beforeModify(P state,
                            IUnitOfWork<?,P> work)

Is called before a write lock is obtained

Parameters:

work - - the unit of work to be processed

beforeReadOnly

protected void beforeReadOnly(P state,
                              IUnitOfWork<?,P> work)

is called before a read lock is obtained

Parameters:

work - - the unit of work to be processed

afterModify

protected void afterModify(P state,
                           java.lang.Object result,
                           IUnitOfWork<?,P> work)

is executed within the transaction right after the unit of work has been executed and delivered the result.

Parameters:

result -

work -

afterReadOnly

protected void afterReadOnly(P state,
                             java.lang.Object result,
                             IUnitOfWork<?,P> work)

is executed within the transaction right after the unit of work has been executed and delivered the result.

Parameters:

result -

work -