I'd like to discuss this issue online with one of you, preferrably over MSN, AOL, or Yahoo messenger.
I am using BoundCompoundPropertyModel so if I understand you correctly then the conversion should be automatic. I provided my own converter, which I register using:
Converter converter = (Converter) getConverter(); converter.set(InternetAddress.class, new InternetAddressConverter());
from within the Form. Aside from that, what else could be going wrong?
Gili
Eelco Hillenius wrote:
I don't know what your problem is; I need more code.
Anyway, here are a few hints for working with converters in general:
- be sure conversion works two ways. Generally you have to have a converter for get- and one for setObject;
- conversion is only automatic when you use the PropertyModels (the ones that use Ognl);
- if you only support one locale (which is the case in a lot of my projects), you might want to pin down the locale.
- in order to make converters work throughout your application, override the factory method in your application class like:
/**
* @see wicket.Application#getConverterFactory()
*/
public IConverterFactory getConverterFactory()
{
return new IConverterFactory()
{
public IConverter newConverter(final Locale locale)
{
final Converter converter = new Converter(locale);
NumberToStringConverter numberToStringConverter = new NumberToStringConverter();
NumberFormat fmt = NumberFormat.getInstance(locale);
fmt.setMinimumFractionDigits(2);
fmt.setMaximumFractionDigits(2);
numberToStringConverter.setNumberFormat(locale, fmt);
final StringConverter stringConverter = new StringConverter();
stringConverter.set(Double.class, numberToStringConverter);
stringConverter.set(Double.TYPE, numberToStringConverter);
converter.set(String.class, stringConverter);
return converter;
}
};
}
Regards,
Eelco
(I'll contact you personally for more code)
Gili wrote:
Ok, I've defined convert() and added my converter to the default one but now I get this exception:
ognl.OgnlException: email [java.lang.ClassCastException: [Ljavax.mail.internet.InternetAddress;]
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:84)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:132)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:1629)
at ognl.ASTProperty.setValueBody(ASTProperty.java:105)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:180)
at ognl.SimpleNode.setValue(SimpleNode.java:249)
at ognl.Ognl.setValue(Ognl.java:476)
at ognl.Ognl.setValue(Ognl.java:494)
at wicket.model.AbstractPropertyModel.onSetObject(AbstractPropertyModel.java:184)
The model contains this method:
public void setEmail(InternetAddress value)
The Form contains this constructor:
public SubscriptionForm(String name, IFeedback feedback) { super(name, feedback);
BoundCompoundPropertyModel model = new BoundCompoundPropertyModel(new SubscriptionModel());
setModel(model);
Converter converter = (Converter) getConverter();
converter.set(InternetAddress.class, new InternetAddressConverter());
RequiredTextField email = new RequiredTextField("email", InternetAddress.class);
add(email);
model.bind(email, InternetAddress.class); add(new Button("submit")); }
Ideas?
Gili
Gili wrote:
Hi,
I need help with Wicket converters. I took a quick glance at AbstractConverter and it does not define:
Object convert(Object value, Locale locale)
which is defined by subclasses. This is confusing to me because I want to define a InternetAddressConverter which will ensure that a String field in the form is actually a valid email address. It is unclear to me what I need to do to get this to work. Any tips would be appreciated.
Gili
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