Re: LoadableDetachableModel - should I call deatch() manually?

[Artur W.]

Hi!


Timo Rantalaiho wrote:
 
   @Override
   public void onDetach() {
   positionToDisplay.detach();
 super.onDetach();
   }
   ...
   }
 

Thanks for your help! It fixed my problem.

Artur

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LoadableDetachableModel - should I call deatch() manually?

[Artur W.]

Hi,

When I create LoadableDetachableModel  the onDeatch() and deatch() methods
are never called.
The load method is only called once. Becouse of it I get
LazyInitializationException from Hibernate.

Should I call deatch() manually or is there something wrong with my
LoadableDetachableModel?

Here is a code.

public class ClientLoadableDetachableModel extends LoadableDetachableModel {

private Long clientId;

public ClientLoadableDetachableModel(Long clientId) {
super();
this.clientId = clientId;
}

@Override
protected Object load() {
return Locator.getClientService().findClientById(clientId);
}

public Client getClient() {
return (Client) super.getObject();
}

public Long getClientId() {
return clientId;
}

}


Thanks for help,
Artur

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Re: LoadableDetachableModel - should I call deatch() manually?

[Michael Sparer]

The detach method should be called by the component that uses the model,
there should be no need for you to call detach manually. 


Artur W. wrote:
 
 Hi,
 
 When I create LoadableDetachableModel  the onDeatch() and deatch() methods
 are never called.
 The load method is only called once. Becouse of it I get
 LazyInitializationException from Hibernate.
 
 Should I call deatch() manually or is there something wrong with my
 LoadableDetachableModel?
 
 Here is a code.
 
 public class ClientLoadableDetachableModel extends LoadableDetachableModel
 {
 
   private Long clientId;
 
   public ClientLoadableDetachableModel(Long clientId) {
   super();
   this.clientId = clientId;
   }
 
   @Override
   protected Object load() {
   return Locator.getClientService().findClientById(clientId);
   }
 
   public Client getClient() {
   return (Client) super.getObject();
   }
 
   public Long getClientId() {
   return clientId;
   }
 
 }
 
 
 Thanks for help,
 Artur
 
 


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Michael Sparer
http://talk-on-tech.blogspot.com
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Re: LoadableDetachableModel - should I call deatch() manually?

[Timo Rantalaiho]

On Tue, 08 Jul 2008, Michael Sparer wrote:
 The detach method should be called by the component that uses the model,
 there should be no need for you to call detach manually. 

...unless the model is not the default model of any Component.
For example you can have

  public class EmployeePanel extends Panel {
  private final IModelPosition positionToDisplay;

  public EmployeePanel(String id, IModelEmployee employee,
  IModelPosition positionToDisplay  {
  super(id, employee);
  this.positionToDisplay = positionToDisplay;
  ...
  }

  @Override
  public void onDetach() {
  positionToDisplay.detach();
  super.onDetach();
  }
  ...
  }

The same goes for nested models, the outer model (assigned to
a component) must delegate the detach call to the inner 
model.

Best wishes,
Timo

-- 
Timo Rantalaiho   
Reaktor Innovations OyURL: http://www.ri.fi/ 

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