DateField<LocalDateTime> not working in p7

Support
#1

After migrating to v7.0 i wanted to migrate to java.time from java.util.Date, but ran into this:

@Inject
DateField<LocalDateTime> dateField;

throws ClassCastException: java.util.Date cannot be cast to java.time.LocalDateTime

it seems the datatype is not set properly during initialization of the component. Has someone had this issue?

#2

Hi,

By default, DateField uses java.util.Date type. If you want to use LocalDateTime you have to bind field to LocalDateTime property or specify datatype explicitly:

@Inject
private DateField<LocalDateTime> demoDateField;

@Subscribe
protected void onInit(InitEvent event) {
    demoDateField.setDatatype(Datatypes.get(LocalDateTime.class));
}

It is required because @Inject field is not declaration of the component, it only wires already configured UI component to a screen controller.

1 Like
Formatter with LocalDateTime
#3

Thank you for the fast and clear answer Yuriy.

Is there a specific reason why java.util.Date is the default and not java.time? From what i see the below component WebDatefield work entirely based on java.time and then back converted to the older Date class for the default field setup.

#4

We cannot change the default, it will completely break compatibility. It was java.util.Date and it stays the same in 7.0.0