[+] on proposition shadow
On Tue, Nov 18, 2008 at 4:16 PM, Nino Saturnino Martinez Vazquez Wael <
[EMAIL PROTECTED]> wrote:
> And heres the result in all its glory, should I create jira issue and
> attach the code?.. :
>
> package zeuzgroup.web.model;
>
> import java.lang.reflect.Field;
> import java.lang.reflect.Method;
> import java.util.HashMap;
> import java.util.Map;
> import java.util.Map.Entry;
>
> import org.apache.wicket.Application;
> import org.apache.wicket.Component;
> import org.apache.wicket.Session;
> 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;
> import org.apache.wicket.util.lang.PropertyResolver;
> import org.apache.wicket.util.lang.PropertyResolverConverter;
>
> public class ShadowCompoundPropertyModel<T> extends
> CompoundPropertyModel<T> {
>
> private final Map<String, Object> newValues = new HashMap<String,
> Object>();
>
> public ShadowCompoundPropertyModel(IModel<T> underlyingModel) {
> super(underlyingModel);
> }
>
> public void fillOriginal() {
> for (Entry<String, Object> entry : newValues.entrySet()) {
>
> PropertyResolverConverter prc = null;
> prc = new
> PropertyResolverConverter(Application.get().getConverterLocator(),
> Session.get().getLocale());
> PropertyResolver.setValue(entry.getKey(), getObject(),
> entry.getValue(), prc);
> }
> }
>
> 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(ShadowCompoundPropertyModel.this);
> this.owner = owner;
> this.newValues = map;
> }
>
> @Override
> public C getObject() {
> if
> (ShadowCompoundPropertyModel.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
> ShadowCompoundPropertyModel.this.propertyExpression(owner);
> }
>
> /**
> * @see org.apache.wicket.model.IWrapModel#getWrappedModel()
> */
> public IModel<T> getWrappedModel() {
> return ShadowCompoundPropertyModel.this;
> }
>
> /**
> * @see org.apache.wicket.model.AbstractPropertyModel#detach()
> */
> @Override
> public void detach() {
> super.detach();
> ShadowCompoundPropertyModel.this.detach();
> }
> }
>
> }
>
> // IComponentAssignedModel / IWrapModel
>
>
> Nino Saturnino Martinez Vazquez Wael 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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