Change SmartFilterBar input from Multi to Single Value

[andrefernandes]

We are developing an ALP app in WebIDE which consumes xsodata. We want one of the filters on the Smart Filter Bar to only accept a single value instead of multiples. The Smart Filter Bar is automatically rendered by the annotations based on the metadata, however we are unable to add the v2 annotation sap:filter-restriction="single-value" which supposedly controls this area.

Upon checking the SmartFilterBar control on the API Reference (https://sapui5.netweaver.ondemand.com/sdk/#/api/sap.ui.comp.smartfilterbar.SmartFilterBar/annotations/FilterExpressionType), I saw that we could add the v4 annotation com.sap.vocabularies.Common.v1.FilterExpressionRestriction to the annotations on the app and set AllowedExpressions to SingleValue. However, I couldn't find that annotation on the Annotation Modeler. Additionally, when checking the content of the Vocabulary (https://wiki.scn.sap.com/wiki/display/EmTech/OData+4.0+Vocabularies+-+SAP+Common#FilterExpressionRestrictionType), I noticed that the annotation FilterExpressionRestriction suggested by the API Reference is actually deprecated, being replaced by Capabilities.FilterRestrictions. But this Vocabulary doesn't mention anything about single/multi values (https://www.odata.org/blog/introducing-a-capabilities-vocabulary/).

Could someone shed some light on how I can set a single field on the filter to allow only a single value?

Best regards,

André

[former_member542756]

Maybe thomas.jung can help?

[former_member423301]

Tried using annotations and faced the same problem. it seems they do not work as described by the documentation. see below for DisplayView

		
				<Annotation Term="Org.OData.Capabilities.V1.FilterRestrictions">
					<Record>
						<PropertyValue Property="FilterExpressionRestrictions">
							<Collection>
								<Record>
									<PropertyValue Property="Property" PropertyPath="DisplayView"/>
									<PropertyValue Property="AllowedExpressions" String="SingleValue"/>
								</Record>
							</Collection>
						</PropertyValue>
					</Record>
				</Annotation>

I will use the workaround by creating a custom Value help via the smartfilterbars custom control. Maybe others facing this issue can do the same.