API Reference > linear-referencing-backend > All linear-referencing-backend Classes Name Description DistanceExpression Core structure carrying linearly-referenced information. Beta ILinearElementProvidedBySource Relationship associating Linear-Elements with the elements they came from. Beta ILinearLocationLocatesElement Relationship indicating bis:Element being linearly-located by a concrete instance mixing-in ILinearLocationElement. Beta ILinearlyLocatedAlongILinearElement Relationship indicating the Linear-Element along which concrete instances mixing-in ILinearlyLocated are located. Beta ILinearlyLocatedAttributesElement Relationship indicating the bis:Element being attributed by a concrete instance mixing-in ILinearlyLocatedAttribution. Beta IReferentReferencesElement Relationship indicating the bis:SpatialElement being used as Referent for Linear Referencing purposes. Beta LinearElement A class offering services for linearly-located data along a Linear-Element. Beta LinearLocation Linear Referencing Location attached to an Element not inherently Linearly Referenced. Beta LinearLocationElement Base class for Spatial Location Element implementations that are linearly located along a Linear-Element. Beta LinearlyLocated A class offering services for LinearlyLocated elements. Beta LinearlyLocatedAttribution Base class for Spatial Location Element subclasses representing properties whose value is located along a Linear-Element and only applies to a portion of an Element. Beta LinearlyReferencedAtLocation Concrete multi-aspect class carrying 'at' linearly-referenced positions along a Linear-Element. Beta LinearlyReferencedAtPositionRefersToReferent Relationship indicating the referent used by a particular linearly-referenced At position. Beta LinearlyReferencedFromPositionRefersToReferent Relationship indicating the referent used by a particular linearly-referenced From position. Beta LinearlyReferencedFromToLocation Concrete multi-aspect class carrying 'from-to' linearly-referenced positions along a Linear-Element. Beta LinearlyReferencedLocation Base class for multi-aspects carrying linearly-referenced locations. Beta LinearlyReferencedToPositionRefersToReferent Relationship indicating the referent used by a particular linearly-referenced To position. Beta LinearPhysicalElement Base class for Physical Elements that are inherently linearly located along a Linear-Element. Beta LinearReferencingSchema Schema for the LinearReferencing domain. Beta Referent Referent-implementation turning any bis:SpatialElement not inherently Linearly-Referenced into a Referent for Linear-Referencing purposes. Beta ReferentElement Spatial Location Element that can play the role of a Referent (known location along a Linear-Element). Beta Interfaces Name Description LinearlyLocatedBase Base interface to optionally be implemented by Elements inherently Linearly-Located. Beta LinearlyLocatedMultipleAt Interface to optionally be implemented by Elements inherently Linearly-Located whose linear-locations are always at-positions. Beta LinearlyLocatedMultipleFromTo Interface to optionally be implemented by Elements inherently Linearly-Located whose linear-locations are always from-to-positions. Beta LinearlyLocatedSingleAt Interface to optionally be implemented by Elements inherently Linearly-Located whose linear-locations are always a single at-position. Beta LinearlyLocatedSingleFromTo Interface to optionally be implemented by Elements inherently Linearly-Located whose linear-locations are always a single from-to-position. Beta Last Updated: 15 June, 2021