Re: ValueListBox in GWT editor with one-to-one relationship creating a new entry in related table

I have some kind of problem lke yours.

I am creating a new Proxy:

LayoutExampleRequest r = requestFactory.employeeRequest();

DepartmentProxy d  = r.create(DepartmentProxy.class);

r.save(d);

departmentEditor.editProxy(d, r);

Then pass the Proxy and the Request(LayoutExampleRequest ) to my editor

driver.edit(proxy, request);

Ultil here ! everything works as espected. Now iam getting with a suggest box Proxys of EmployeeProxy.

search = new SuggestBox(new SuggestOracle() {

@Override

public void requestSuggestions(final Request request,final Callback callback) {

System.out.println(request.getQuery());

//ignore less than 3

if(request.getQuery().length() > 3){

requestFactory.employeeRequest().search(request.getQuery()).fire(new Receiver<List<EmployeeProxy>>(){

@Override

public void onSuccess(List<EmployeeProxy> response) {

List<MySuggestion<EmployeeProxy>> suggestions = new ArrayList<MySuggestion<EmployeeProxy>>();

for(EmployeeProxy e:response){

MySuggestion<EmployeeProxy> suggestion = new MySuggestion<EmployeeProxy>();

suggestion.setModel(e,e.getFirstName(),e.getFirstName()+" "+e.getLastName());

suggestions.add(suggestion);

}

callback.onSuggestionsReady(request, new Response(suggestions));

}

});

}

}

});

MySuggestion is a wrapper class to handle the EmployeeProxy.

Now i want to add this EmployeeProxy to my DeparmentProxy since i have a @OneToOne on JPA.

search.addSelectionHandler(new SelectionHandler<SuggestOracle.Suggestion>() {

@Override

public void onSelection(SelectionEvent<Suggestion> event) {

MySuggestion<EmployeeProxy> s = (MySuggestion<EmployeeProxy>)event.getSelectedItem();

proxy.setSupervisor(s.getModel());

}

});

proxy is a EntityProxy for Deparment

then i fire the driver:

departmentEditor.getDriver().flush().fire(new Receiver<Void>() {

@Override

public void onSuccess(Void response) {

Window.alert("Success");

// refresh the datagrid

Range range = dataGrid.getVisibleRange();

dataGrid.setVisibleRangeAndClearData(range, true); //1st way

                                // create a new DepartmentProxy to bind to the Editor.

createProxy();

    // change button text

    updateButton.setText("Save");

}

@Override

public void onConstraintViolation(Set<ConstraintViolation<?>> violations) {

for(ConstraintViolation v :violations){

Window.alert(v.getMessage()+" "+v.getPropertyPath());

}

}

@Override

public void onFailure(ServerFailure error) {

Window.alert(error.getMessage());

}

});

The problem is iam getting ConstraintViolations from the EmployeeProxy, is like the driver atach the EmployeeProxy but with null values.

(Take a look iam validating my Entityes with  JSR-330 )

Dont know how to make a relationship with a new Proxy with other taked from the server.

Any help would be nice!

Thank you

2012/2/25 Thomas Broyer <t.broyer@gmail.com>

Without seeing more code, I'd say it's your server-side code fault: when sending the Address back to the server, you're not retrieving the entity back from the database but creating a new one, *or* you don't "attach" the entity correctly to your "session" when persisting, which then persists a new row instead of updating an existing one.

On Friday, February 24, 2012 5:31:04 PM UTC+1, Rocky wrote:

Hi,

I have two objects person and address

class Person{

String name;

@one-to-one
Address adderss;
}

class Address{

String HNo;

String street;

String zip;
}

I  developed a screen with Person information  and a ValueListBox with
all the available addresses and a save button. By clicking on save
button I need to map only one address to a new Person object. I am
using RequestFactoryEditorDriver. But when i click on save button, a
new addess row is getting created with Null values and its id is
refering by new Person row in database instead of refering already
selected Address object in the ValueListBox.

Please suggest...

Thanks,
Rocky

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Liondev S.A. de C.V.

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