Ok great.. Seems like SerializationHelper.clone and just a normal
compound model could work..
Francisco Diaz Trepat - gmail wrote:
Don't know, but LOL.
This might be an instancing issue in which special handling is good for this
scenario but seems to be fine for most cases. And in a lazy TDD programming
way it might be good enough.
Although I know from blog and other threads that you look for greatness :-)
and not just code that works. Which is very inspiring now a days, in this
business hour of programming history.
I'll ask arround though, I think I might know someone who might know, and
also is not my mother...
f(t)
On Thu, Nov 20, 2008 at 6:26 PM, Nino Saturnino Martinez Vazquez Wael <
[EMAIL PROTECTED]> wrote:
I love simple and simple is good. But this approach has issues with
hibernate if your hibernate sessions are per request and your shadowmodel
lives in multiple requests and your entities has references to other
entities for example 1..* etc ... In "simple" use cases, and possibly also
when not using hibernate this might be fine. This is what I am exploring
currently. When not attending seminars or talking with people..
Im wondering how eclipselink & openJPA handles the "hibernate lazy load
problem", according to a oracle guy theres not a problem when using Toplink
(which now are eclipselink?)
Input on these things are very welcome...
regards Nino
Francisco Diaz Trepat - gmail wrote:
why?
simple is good. doesn't need to be complex.
what part you dislike the most?
f(t)
On Thu, Nov 20, 2008 at 2:29 AM, Nino Saturnino Martinez Vazquez Wael <
[EMAIL PROTECTED]> wrote:
BTW this is a flawed approch.. We need something a little more
intelligent.. I'll return on the subject..
Nino Saturnino Martinez Vazquez Wael wrote:
heres the raw and completely untested version of it. probably with a
whole
bunch of issues...:
package zeuzgroup.web.model;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.wicket.Component;
import org.apache.wicket.WicketRuntimeException;
import org.apache.wicket.model.AbstractPropertyModel;
import org.apache.wicket.model.CompoundPropertyModel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.IWrapModel;
public class EditorModel<T> extends CompoundPropertyModel<T> {
private final Map<String, Object> newValues = new HashMap<String,
Object>();
public EditorModel(IModel<T> underlyingModel) {
super(underlyingModel);
}
public void fillOriginal() {
Class<?> c = this.getObject().getClass();
for (Entry<String, Object> entry : newValues.entrySet()) {
try {
Field t = c.getDeclaredField(entry.getKey());
t.set(this.getObject(), entry.getValue());
} catch (Exception e) {
throw new WicketRuntimeException("Could not set "
+ entry.getKey(), e);
}
}
}
public <C> IWrapModel<C> wrapOnInheritance(Component component) {
return new AttachedCompoundPropertyModel<C>(component,
newValues);
}
private class AttachedCompoundPropertyModel<C> extends
AbstractPropertyModel<C> implements IWrapModel<C> {
private static final long serialVersionUID = 1L;
private final Component owner;
private final Map<String, Object> newValues;
/**
* Constructor
*
* @param owner
* component that this model has been attached to
*/
public AttachedCompoundPropertyModel(Component owner,
Map<String,Object> map) {
super(EditorModel.this);
this.owner = owner;
this.newValues = map;
}
@Override
public C getObject() {
if (EditorModel.this.newValues.containsKey(owner.getId()))
{
return (C) newValues.get(owner.getId());
} else {
return super.getObject();
}
}
@Override
public void setObject(C object) {
newValues.put(owner.getId(), object);
}
/**
* @see
org.apache.wicket.model.AbstractPropertyModel#propertyExpression()
*/
@Override
protected String propertyExpression() {
return EditorModel.this.propertyExpression(owner);
}
/**
* @see org.apache.wicket.model.IWrapModel#getWrappedModel()
*/
public IModel<T> getWrappedModel() {
return EditorModel.this;
}
/**
* @see org.apache.wicket.model.AbstractPropertyModel#detach()
*/
@Override
public void detach() {
super.detach();
EditorModel.this.detach();
}
}
}
// IComponentAssignedModel / IWrapModel
Francisco Diaz Trepat - gmail wrote:
Nice, I was up to something similar.
On Tue, Nov 18, 2008 at 9:43 AM, Nino Saturnino Martinez Vazquez Wael <
[EMAIL PROTECTED]> wrote:
Hi
Im trying todo a compoundpropertymodel which does not change original
values in the "original" model. I need this since I am updating some
stuff
in a wizard but I first want to commit when the user confirms in the
end
of
the wizard, and if the model are changed directly the transaction are
automatically committed to the database....
So my idea were to todo a shadowCompoundPropertyModel something like
this:
class EditorModel extends CompoundPropertyModel {
private Map newValues=new HashMap<String, Object>();
public EditorModel(CompoundPropertyModel underlyingModel,
String propertyName) {
super(underlyingModel);
}
public getObject (String property){
check if there are something in the map if so return it, otherwise
fall
back to the underlying model
} public setObject (String prop, Value){
put changes in the map...
}
public UpdateOriginal(){
iterate over the map and use reflection to set values on the original
model..
}
}
Does anybody have something similar floating around, in a more
complete
state..? Or could it be done in a easier way?
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
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For additional commands, e-mail: [EMAIL PROTECTED]
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
