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[CDO] How to get the userId of the user who locks a given CDO object [message #757242]

Thu, 17 November 2011 10:23

Jerome Godard

Messages: 6
Registered: November 2010

Junior Member

Hi,

I use a CDO repository with UserManager enabled (CDO 4.0.1). I would like to decorate my project explorer with the id of the user that locks (lockType = WRITE) a CDO element so that a user can know the people that work on an other element.

For the moment I have the following method provided by CDOLockImpl:

  public boolean isLockedByOthers()
  {
    return object.cdoView().isObjectLocked(object, type, true);
  }

this method delegates to a CDOSessionProtocol instance

sessionProtocol.isObjectLocked(this, object, lockType, byOthers);

Is there a better way to retreive this user ID or at least retreive the session that has a lock on this element.

Thanks for your help,

Jérôme

[Updated on: Thu, 17 November 2011 10:40]

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Re: [CDO] How to get the userId of the user who locks a given CDO object [message #757267 is a reply to message #757242]

Thu, 17 November 2011 12:22

Erdal Karaca

Messages: 854
Registered: July 2009

Senior Member

Did you try this:

cdoObject.cdoView().getSession().getUserID()

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Re: [CDO] How to get the userId of the user who locks a given CDO object [message #757269 is a reply to message #757267]

Thu, 17 November 2011 12:30

Erdal Karaca

Messages: 854
Registered: July 2009

Senior Member

That should not work as it would just return the session user Neutral

Erdal Karaca wrote on Thu, 17 November 2011 07:22

Did you try this:

cdoObject.cdoView().getSession().getUserID()

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Re: [CDO] How to get the userId of the user who locks a given CDO object [message #757962 is a reply to message #757242]

Fri, 18 November 2011 05:20

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

Hi Jérôme,

We've enhanced the locking support significantly in CDO 4.1. The CDOObject interface now has the method cdoLockState()
which return the CDOLockState of an object:

public interface CDOLockState
{
public Object getLockedObject();
public boolean isLocked(LockType lockType, CDOLockOwner lockOwner, boolean others);
public Set<CDOLockOwner> getReadLockOwners();
public CDOLockOwner getWriteLockOwner();
public CDOLockOwner getWriteOptionOwner();
}

public interface CDOLockOwner
{
public int getSessionID();
public int getViewID();
public String getDurableLockingID();
public boolean isDurableView();
}

With session.getRemoteSessionManager().getRemoteSessions() you get an array of CDORemoteSessions:

public interface CDORemoteSession extends Comparable<CDORemoteSession>
{
public CDORemoteSessionManager getManager();
public int getSessionID();
public String getUserID();
public boolean isSubscribed();
public boolean sendMessage(CDORemoteSessionMessage message);
}

Does that help?

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Am 17.11.2011 11:23, schrieb J:
> Hi,
>
> I use a CDO repository with UserManager enabled. I would like to decorate my project explorer with the id of the user
> that locks (lockType = WRITE) a CDO element so that a user can know the people that work on an other element.
>
> For the moment I have the following method provided by CDOLockImpl:
>
>
> public boolean isLockedByOthers()
> {
> return object.cdoView().isObjectLocked(object, type, true);
> }
>
>
> this method delegates to a CDOSessionProtocol instance
> sessionProtocol.isObjectLocked(this, object, lockType, byOthers);
>
>
> Is there a better way to retreive this user ID or at least retreive the session that has a lock on this element.
>
> Thanks for your help,
>
> Jérôme

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

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Re: [CDO] How to get the userId of the user who locks a given CDO object [message #758297 is a reply to message #757962]

Tue, 22 November 2011 15:47

Jerome Godard

Messages: 6
Registered: November 2010

Junior Member

Thanks for your answers.

I saw that the API regarding LockState has been enhanced in CDO 4.1. The problem is that the platform I am working on, is only CDO 4.0 compliant and that it can not be easily migrated to CDO 4.1. Anyway I will find a workaround waiting for the CDO 4.1 integration in my platform.

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