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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--
-Wicket for love
Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684
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