For information on the parameters in this dialog that are specific to all formats, see Format attributes are specific to a format's schema. Some examples are: autocad_block_name and sde30_justification. They are not generically supported by FME and will change when translating to a different format. You can "expose" or make them visible so that you can set them to particular values and connect them to other format-specific attributes. In general, format attributes are designed for translations to and from the same format, although advanced users may find them useful for writing to other formats when using customized workspaces. Format attributes allow a wide variety of special things to be done with formats, such as setting line thickness, creating special entities, and setting particular bits or bytes.
The DocumentDB reader produces these format attributes.
|
Format Attribute |
Document Property |
Description |
|---|---|---|
| documentdb_id | id | The user-defined primary key. |
| documentdb_rid | _rid | A read-only and system-generated primary key. |
| documentdb_ts | _ts | A read-only and system-generated timestamp. The value is the Document’s last-updated timestamp, in seconds from the UNIX epoch. |
| documentdb_self | _self | A read-only and system-generated unique URI for the Document. |
| documentdb_etag | _etag | A read-only and system-generated value. |
| documentdb_attachments | _attachments | A read-only and system-generated value. |
| documentdb_json | N/A | If Include Document JSON is enabled, then features read from DocumentDB include the whole JSON for each Document in this attribute. |
| json_type | N/A | Geometry type. Read-only. |
Geometry Types
All geometries in DocumentDB are geospatial, in the LL84 coordinate system. The DocumentDB reader populates the json_type format attribute with the geometry types below, based on any GeoJSON value parsed from the attribute specified by Geometry Property reader feature type parameter.
|
Geometry Type |
Description |
|---|---|
| json_no_geom | No geometry |
| json_point | Single coordinate |
| json_line | Line geometry |
| json_polygon | Polygon geometry |
| json_collection | Any type of GeoJSON geometry collection, including homogeneous collection types |