Assigns an editor based on the current column for this schema.

def assignPlugin(self):
        """
        Assigns an editor based on the current column for this schema.
        """
        self.uiOperatorDDL.blockSignals(True)
        self.uiOperatorDDL.clear()
        
        plugin = self.currentPlugin()
        if plugin:
            flags = 0
            if not self.queryWidget().showReferencePlugins():
                flags |= plugin.Flags.ReferenceRequired
            
            self.uiOperatorDDL.addItems(plugin.operators(ignore=flags))
        
        self.uiOperatorDDL.blockSignals(False)
        self.assignEditor()