OData Import Rules

Bridge 7 The OData Importer imports OData Version 4.0 definitions encoded in CSDL (.edmx) and creates UML model elements corresponding to the definitions.
The CSDL file of your OData service can be retrieved from this URL: http://<servicehost>/<servicepath>/$metadata.

Limitations

• The OData Importer supports OData files of version 4.0 for entity and service description.
• Concerning older OData versions, we mostly support 3.0 for entity import but cannot import service descriptions.

Service Import Limitations

The OData Importer has the following limitations concerning import of service descriptions:

• You cannot use $count to get the number of records returned by a request. This would return an integer in the response body and that is not supported.
• You cannot use Open Type features to support dynamic properties.
• You cannot request an individual property of a complex structure using <entity name>('<entity ID')/<individual property name>.
• You cannot group multiple requests using the batch feature of OData.

OData Primitive Types

OData Type	Description	Supported by Importer	E2E Type
Edm.Binary	Binary data		Blob
Edm.Boolean	Binary-valued logic		Boolean
Edm.Byte	Unsigned 8-bit integer		Integer
Edm.Date	Date without a time-zone offset		DateTime
Edm.DateTimeOffset	Date and time with a time-zone offset, no leap seconds		DateTime
Edm.Decimal	Numeric values with fixed precision and scale		Float
Edm.Double	IEEE 754 binary64 floating-point number (15-17 decimal digits)		Float
Edm.Duration	Signed duration in days, hours, minutes, and (sub)seconds
Edm.Guid	16-byte (128-bit) unique identifier		String
Edm.Int16	Signed 16-bit integer		Integer
Edm.Int32	Signed 32-bit integer		Integer
Edm.Int64	Signed 64-bit integer		Integer
Edm.SByte	Signed 8-bit integer
Edm.Single	IEEE 754 binary32 floating-point number (6-9 decimal digits)		Float
Edm.Stream	Binary data stream
Edm.String	Sequence of UTF-8 characters		String
Edm.TimeOfDay	Clock time 00:00-23:59:59.999999999999
Edm.Geography	Abstract base type for all Geography types
Edm.GeographyPoint	A point in a round-earth coordinate system
Edm.GeographyLineString	Line string in a round-earth coordinate system
Edm.GeographyPolygon	Polygon in a round-earth coordinate system
Edm.GeographyMultiPoint	Collection of points in a round-earth coordinate system
Edm.GeographyMultiLineString	Collection of line strings in a round-earth coordinate system
Edm.GeographyMultiPolygon	Collection of polygons in a round-earth coordinate system
Edm.GeographyCollection	Collection of arbitrary Geography values
Edm.Geometry	Abstract base type for all Geometry types
Edm.GeometryPoint	Point in a flat-earth coordinate system
Edm.GeometryLineString	Line string in a flat-earth coordinate system
Edm.GeometryPolygon	Polygon in a flat-earth coordinate system
Edm.GeometryMultiPoint	Collection of points in a flat-earth coordinate system
Edm.GeometryMultiLineString	Collection of line strings in a flat-earth coordinate system
Edm.GeometryMultiPolygon	Collection of polygons in a flat-earth coordinate system
Edm.GeometryCollection	Collection of arbitrary Geometry values

On importing an OData entities description, the importer will generate a package structure from the OData definitions. The entities are generated to a package Entities, the types to a package Types. For each entity and type, a corresponding collection type is created.