Bug 167450 [DataBinding] Get rid of bind support factory magic
I finally realized that we don't need that other magic factory. I'll move fillBindSpecDefaults() and the methods it calls (createConverter, createValidator etc) to a new class DefaultBindSpec. Clients who want default validators and converters created for them just create a DefaultBindSpec as opposed to a (rather empty) BindSpec. I will also move the early type checking into DefaultBindSpec to make it optional as well.
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/scenarios/TextControlScenario.java
}
    public void testScenario08() {
        if (BindingTestSuite.failingTestsDisabled(this)) {
            return;
        }
        
        
        
        DataBindingContext parentDbc = getDbc();
        DataBindingContext childDbc = new DataBindingContext(parentDbc,
                Realm.getDefault(),
                new BindSupportFactory[] { new CustomBeanBindSupportFactory(parentDbc) });
        
        childDbc.bindValue(SWTObservables.observeText(text, SWT.Modify), BeansObservables.observeValue(adventure, "maxNumberOfPeople"), null);
        
        text.setText("4");
        assertEquals(4, adventure.getMaxNumberOfPeople());
        
        text.setText("999");
        assertEquals(4, adventure.getMaxNumberOfPeople());
        childDbc.dispose();
    }
    public void testScenario09() {