API Reference > Classes > Export Classes > TB_IFCEXPORT Namespace > Classes > OdMaterialRelationsCache Class
OdMaterialRelationsCache Class
Syntax
C++
class OdMaterialRelationsCache : public OdBmMap<OdDAIObjectId, OdBmSet<OdDAIObjectId> >;

TbIfcMaterialRelationsCache.h

Cache of the IfcRoot handles mapping to an IfcMaterial or IfcMaterialList handle.

Add 
Adds the IfcRoot handle to the dictionary.
 
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