Feature Representation

Features read from Ingres Spatial consist of a series of attribute values and geometry. The feature type of each feature is defined in its Feature Type Properties.

The geometry object model in Ingres Spatial follows the OGC Simple Features Specification 1.1. For more information, see http://www.opengeospatial.org/.

Features written to the database have the destination table as their feature type, and attributes as defined in Feature Type Properties.

In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Attributes), this format adds the format-specific attributes described in this topic.

Attribute Name

Contents

ingres_type

The type of geometric entity stored within the feature. The valid values for the object model are listed below:

  • ingres_point
  • ingres_multipoint
  • ingres_linestring
  • ingres_multilinestring
  • ingres_polygon
  • ingres_multipolygon
  • ingres_geometrycollection
  • ingres_none

Features read from, or written to, Ingres Spatial also have an attribute for each column in the database table. The feature attribute name will be the same as the source or destination column name. The attribute and column names are case-insensitive.