FME has read and write access to both attribute and spatial data held in SpatiaLite databases.
SpatiaLite is a spatial extension to SQLite which provides support for the Open Geospatial Consortium (OGC)’s Simple Feature Specification. SpatiaLite also provides more advanced functionality to SQLite databases, such as spatial indexes and multiple coordinate systems.
SpatiaLite is a relational database system that supports SQL and stores the entire database in a single file.
SpatiaLite Product and System Requirements
|
Format |
Platform |
Operating System |
||||
|---|---|---|---|---|---|---|
|
Reader/Writer |
FME Desktop License |
FME Server |
FME Cloud |
Windows 64-bit |
Linux |
Mac |
|
Reader |
Available in FME Professional Edition and higher |
Yes |
Yes |
Yes |
Yes |
Yes |
|
Writer |
Available in FME Professional Edition and higher |
Yes |
Yes |
Yes |
Yes |
Yes |
Terminology: SpatiaLite and FME
|
SpatiaLite |
Definition or FME Representation |
|---|---|
|
table or view |
feature type |
|
row |
feature |
|
column |
attribute |
Reader Overview
FME considers a database dataset to be a collection of relational tables. The tables must be defined in the workspace before they can be read. SpatiaLite metadata tables will be ignored.
The reader can also read SQLite Views.
Arbitrary WHERE clauses and joins are fully supported per table or view.
Writer Overview
The SpatiaLite writer module stores attribute records into a live relational database. The SpatiaLite writer provides the following capabilities:
- Transaction Support: The SpatiaLite writer provides transaction support that eases the data loading process. Occasionally, a data load operation terminates prematurely due to data difficulties. The transaction support provides a mechanism for reloading corrected data without data loss or duplication.
- Table Creation: The SpatiaLite writer uses the writer feature type schema information and options within the workspace to automatically create database tables as needed.
- Writer Mode Selection: The writer mode (Insert, Update, Upsert, and Delete) can be specified at three unique levels:
|
Writer Mode parameter |
|
|
Feature Operation parameter |
|
|
fme_db_operation attribute |