OpenCompositionAction is a picker field action designed to open an editor screen for the one-to-one composition entity selected in the picker field. If there is no linked entity at the moment (i.e. the field is empty), a new instance is created and saved by the edit screen afterwards.

The action is implemented by com.haulmont.cuba.gui.actions.picker.OpenCompositionAction class and should be defined in XML using type="picker_open_composition" action’s attribute. The action parameters are the same as for OpenAction.