Eclipse Community Forums: WindowBuilder

Home » Eclipse Projects » WindowBuilder » Converter(Model converter Class does not contains public constructor(s): )

Show: Today's Messages :: Show Polls :: Message Navigator

Converter [message #890221]

Thu, 21 June 2012 13:52

Peter Nagy

Messages: 4
Registered: September 2011

Junior Member

Hi!

I am trying to use the GUI's "Edit Data Binding" window to attach a Converter to one of my data bindings. After selecting the Converter(ExchangeMailToStringConverter) I get the following error message:

"Model converter Class does not contains public constructor(s):"
ExchangeMailToStringConverter().

The source of the Converter class:

import java.util.List;
import org.eclipse.core.databinding.conversion.Converter;
import com.moyosoft.exchange.mail.ExchangeMail;

public class ExchangeMailToStringConverter extends Converter{

public ExchangeMailToStringConverter(Object fromType, Object toType) {
super(fromType, toType);
}

@Override
public Object convert(Object fromObject) {
List<ExchangeMail> mails = (List<ExchangeMail>)fromObject;
return mails.get(Main.getInstance().getN());
}
}

Modifying the GUI's source manually works fine:

UpdateValueStrategy uvs = new UpdateValueStrategy();
uvs.setConverter(new ExchangeMailToStringConverter(ExchangeMail.class,String.class));
bindingContext.bindValue(text_4ObserveTextObserveWidget, logicKurtIpListObserveValue, null, uvs);

Any suggestions?

Thanks!
NagPer

Report message to a moderator

Re: Converter [message #890257 is a reply to message #890221]

Thu, 21 June 2012 15:58

Eric Clayberg

Messages: 979
Registered: July 2009
Location: Boston, MA

Senior Member

That error message seems very specific...it is looking for a default constructor. Presumably, your custom converter class should know what it wants to convert from/to. Have you tried something like this?

public ExchangeMailToStringConverter() {
    super(ExchangeMail.class,String.class);
}

Report message to a moderator

Re: Converter [message #902736 is a reply to message #890257]

Mon, 20 August 2012 08:14

Peter Nagy

Messages: 4
Registered: September 2011

Junior Member

Eric Clayberg wrote on Thu, 21 June 2012 11:58

That error message seems very specific...it is looking for a default constructor. Presumably, your custom converter class should know what it wants to convert from/to. Have you tried something like this?
public ExchangeMailToStringConverter() {
    super(ExchangeMail.class,String.class);
}

That works Eric! Thank you!

Report message to a moderator

Previous Topic:	Avoiding user to change the source
Next Topic:	Label ICON in a modal dialog doesn't display! Why?

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Mon Sep 23 15:14:22 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter