Getting dirty values from form on commit?

[cmadsen_dk]

Hello

How do I get the dirty values from a formmodel up on commit?

Maybe RCP-560 fixes it ?

But I can not figure how.

[cmadsen_dk]

This seems to work but does it not feel good. Are there any other way of doing this?

@Override
	public void commit() {
try {
	Field dirtyValueAndFormModelsField = AbstractFormModel.class
			.getDeclaredField("dirtyValueAndFormModels");
	dirtyValueAndFormModelsField.setAccessible(true);
	HashSet dirtyValueAndFormModels = (HashSet) dirtyValueAndFormModelsField
			.get(this.getFormModel());

	ValidatingFormModel formModel = getFormModel();
	for (Object o : dirtyValueAndFormModels) {
		if (o instanceof FieldMetadata) {
			Set<String> fNames = formModel.getFieldNames();
			for (String s : fNames) {
				if (o == formModel.getFieldMetadata(s)) {
					System.out.println("Changed " + s + " to "
							+ formModel.getValueModel(s).getValue());
						}
					}
				}
			}
			super.commit();
		} catch (Exception e) {
			// log.error("",e);
			e.printStackTrace();
		}
	}

[LievenDoclo]

Ok, I did NOT see that. That's really nasty code...

If you know which properties you need to monitor, you can add a listener on that property and monitor value changes.

Can you give me a use case when you'd want to use this 'feature'.

[cmadsen_dk]

I did try:

	Set<String> fNames = formModel.getFieldNames();
	for (String s : fNames) {
	DirtyTrackingValueModel v = (DirtyTrackingValueModel) formModel
				.getValueModel(s);
	if (v.isDirty()) {
		System.out.println("[Changed " + s + " to " + v.getValue()
					+ "]");
		}
	}

without luck. Teh cast to DirtyTrackingValueModel fails.

Use Case:

I'm trying to use spring rcp to produce a new front end to a legacy system that uses a protocol like this:

xttp://.../update?name1=value1&name2=value2...

the protocol requires/assumes that the client only sends values that has changed.

Being lazy I'm trying to come up with a generic way of doing this for all the forms I have to build.

[LievenDoclo]

Let's see... this might work...

Set<String> fNames = formModel.getFieldNames();
for(String fName : fNames)
{
    FieldMetaData fmd = formModel.getFieldMetaData(fName);
    if(fmd != null && fmd.isDirty())
    {
         // do something
    }
}

[cmadsen_dk]

Thanks, that did it.