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The Open Source Java API for CityGML
Type describing the thematic and geometric attributes and the associations of buildings. It is an
abstract type, only its subclasses Building and BuildingPart can be instantiated. An _AbstractBuilding may consist
of BuildingParts, which are again _AbstractBuildings by inheritance. Thus an aggregation hierarchy between
_AbstractBuildings of arbitrary depth may be specified. In such an hierarchy, top elements are Buildings, while
all other elements are BuildingParts. Each element of such a hierarchy may have all attributes and geometries of
_AbstractBuildings. It must, however, be assured than no inconsistencies occur (for example, if the geometry of a
Building does not correspond to the geometries of its parts, or if the roof type of a Building is saddle roof,
while its parts have an hip roof). As subclass of _CityObject, an _AbstractBuilding inherits all attributes and
relations, in particular an id, names, external references, and generalization relations.
The name will be represented by gml:name (inherited from _GML) . list order for
storeyHeightsAboveground: first floor, second floor,... list order for storeyHeightsBelowground: first
floor below ground, second floor below ground,... The lodXMultiSurface must be used, if the geometry
of a building is just a collection of surfaces bounding a solid, but not a topologically clean solid
boundary necessary for GML3 solid boundaries.
Class of a building. The values of this type are defined in the XML file BuildingClassType.xml,
according to the dictionary concept of GML3.
Intended function of a building. The values of this type are defined in the XML file
BuildingFunctionType.xml, according to the dictionary concept of GML3. The values may be adopted from ALKIS, the
german standard for cadastre modelling. If the cadastre models from other countries differ in the building
functions, these values may be compiled in another codelist to be used with CityGML.
Actual usage of a building. The values of this type are defined in the XML file
BuildingUsageType.xml, according to the dictionary concept of GML3.
Roof Types. The values of this type are defined in the XML file RoofTypeType.xml, according to the
dictionary concept of GML3.
Denotes the relation of an _AbstractBuilding to its building parts. The BuildingPartPropertyType
element must either carry a reference to a BuildingPart object or contain a BuildingPart object inline, but
neither both nor none.
A BuildingInstallation is a part of a Building which has not the significance of a BuildingPart.
Examples are stairs, antennas, balconies or small roofs. As subclass of _CityObject, a BuildingInstallation
inherits all attributes and relations, in particular an id, names, external references, and generalization
relations.
Class of a building installation. The values of this type are defined in the XML file
BuildingInstallationClassType.xml, according to the dictionary concept of GML3.
Function of a building installation. The values of this type are defined in the XML file
BuildingInstallationFunctionType.xml, according to the dictionary concept of GML3.
Actual usage of a building installation. The values of this type are defined in the XML file
BuildingInstallationUsageType.xml, according to the dictionary concept of GML3.
Denotes the relation of an _AbstractBuilding to its building installations. The
BuildingInstallationPropertyType element must either carry a reference to a BuildingInstallation object or contain
a BuildingInstallation object inline, but neither both nor none.
An IntBuildingInstallation is an interior part of a Building which has a specific function or
semantical meaning. Examples are interior stairs, railings, radiators or pipes. As subclass of _CityObject, a
nIntBuildingInstallation inherits all attributes and relations, in particular an id, names, external references,
and generalization relations.
Class of an interior building installation. The values of this type are defined in the XML file
IntBuildingInstallationClassType.xml, according to the dictionary concept of GML3.
Function of an interior building installation. The values of this type are defined in the XML file
IntBuildingInstallationFunctionType.xml, according to the dictionary concept of GML3.
Actual Usage of an interior building installation. The values of this type are defined in the XML
file IntBuildingInstallationUsageType.xml, according to the dictionary concept of GML3.
Denotes the relation of an _AbstractBuilding to its interior building installations. The
IntBuildingInstallationPropertyType element must either carry a reference to a IntBuildingInstallation object or
contain a IntBuildingInstallation object inline, but neither both nor none.
A BoundarySurface is a thematic object which classifies surfaces bounding a building or a room. The
geometry of a BoundarySurface is given by MultiSurfaces. As it is a subclass of _CityObject, it inherits all
atributes and relations, in particular the external references, and the generalization relations.
Denotes the relation of an _AbstractBuilding to its bounding thematic surfaces (walls, roofs, ..).
The BoundarySurfacePropertyType element must either carry a reference to a _BoundarySurface object or contain a
_BoundarySurface object inline, but neither both nor none. There is no differentiation between interior surfaces
bounding rooms and outer ones bounding buildings (one reason is, that ClosureSurfaces belong to both types). It
has to be made sure by additional integrity constraints that, e.g. an _AbstractBuilding is not related to
CeilingSurfaces or a room not to RoofSurfaces.
Denotes the relation of an _BondarySurface to its openings (doors, windows). The OpeningPropertyType
element must either carry a reference to an _Opening object or contain an _Opening object inline, but neither both
nor none.
Type for openings (doors, windows) in walls. Used in LOD3 and LOD4 only. As subclass of
_CityObject, an _Opening inherits all attributes and relations, in particular an id, names, external references,
and generalization relations.
Type for windows in walls. Used in LOD3 and LOD4 only . As subclass of _CityObject, a window
inherits all attributes and relations, in particular an id, names, external references, and generalization
relations.
Type for doors in walls. Used in LOD3 and LOD4 only . As subclass of _CityObject, a Door inherits
all attributes and relations, in particular an id, names, external references, and generalization relations.
A Room is a thematic object for modelling the closed parts inside a building. It has to be closed,
if necessary by using closure surfaces. The geometry may be either a solid, or a MultiSurface if the boundary is
not topologically clean. The room connectivity may be derived by detecting shared thematic openings or closure
surfaces: two rooms are connected if both use the same opening object or the same closure surface. The thematic
surfaces bounding a room are referenced by the boundedBy property. As subclass of _CityObject, a Room inherits all
attributes and relations, in particular an id, names, external references, and generalization relations.
Class of a room . The values of this type are defined in the XML file RoomClassType.xml, according
to the dictionary concept of GML3.
Function of a room. The values of this type are defined in the XML file RoomFunctionType.xml,
according to the dictionary concept of GML3.
Actual Usage of a room. The values of this type are defined in the XML file RoomUsageType.xml,
according to the dictionary concept of GML3.
Type for building furnitures. As subclass of _CityObject, a BuildingFurniture inherits all
attributes and relations, in particular an id, names, external references, and generalization relations.
Class of a building furniture. The values of this type are defined in the XML file
BuildingFurnitureClassType.xml, according to the dictionary concept of GML3.
Function of a building furniture. The values of this type are defined in the XML file
BuildingFurnitureFunctionType.xml, according to the dictionary concept of GML3.
Actual Usage of a building Furniture. The values of this type are defined in the XML file
BuildingFurnitureUsageType.xml, according to the dictionary concept of GML3.
Denotes the relation of an _AbstractBuilding to its rooms. The InteriorRoomPropertyType element must
either carry a reference to a Room object or contain a Room object inline, but neither both nor none.
Denotes the relation of a Room to its interior furnitures (movable). The
InteriorFurniturePropertyType element must either carry a reference to a BuildingFurniture object or contain a
BuildingFurniture object inline, but neither both nor none.
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