<Object ID="ReadOnlyRule" __autoConstruct="DataSource" inheritsFrom="Rule" Constructor="readOnly" addGlobalId="false">
    <fields>
        <field name="fieldAppearance" type="enum">
            <valueMap>
                <value>readOnly</value>
                <value>hidden</value>
                <value>disabled</value>
            </valueMap>
        </field>
    </fields>
</Object>
