Feature Representation

Features read from Oracle Spatial GeoRaster consist of attribute values and raster data. FME features correspond to rows in GeoRaster tables. The attributes on the features correspond to non-spatial columns in the tables. The rasters on the features for a feature type correspond to the raster column of a raster table

In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Attributes), the Oracle Spatial GeoRaster module makes use of the following special attribute and trait names:

Attribute/Trait Name	Contents
oracle_type	oracle_raster
oracle_srid	For the Oracle Spatial GeoRaster reader, this attribute is set to the SRID value of the raster being read. If the SRID value is null, oracle_srid is not set on the feature. The SRID value on the first feature read is used to look up a coordinate system in FME, which is then set on all the subsequent features read, even if their SRID values conflict with the first SRID value. For the Oracle Spatial GeoRaster writer, oracle_srid specifies the SRID of the raster being written on a per feature type (table) basis. It overrides the coordinate system set on the writer.

Attribute/Trait Name

Contents

oracle_type

oracle_raster

oracle_srid

For the Oracle Spatial GeoRaster reader, this attribute is set to the SRID value of the raster being read. If the SRID value is null, oracle_srid is not set on the feature. The SRID value on the first feature read is used to look up a coordinate system in FME, which is then set on all the subsequent features read, even if their SRID values conflict with the first SRID value.

For the Oracle Spatial GeoRaster writer, oracle_srid specifies the SRID of the raster being written on a per feature type (table) basis. It overrides the coordinate system set on the writer.