SpatiaLite Reader/Writer

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	FME Platform			Operating System
Reader/Writer	FME Form	FME Flow	FME Flow Hosted	Windows 64-bit	Linux	Mac
Reader	Yes	Yes	Yes	Yes	Yes	Yes
Writer	Yes	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	Writer Mode parameter
Feature Type	Feature Operation parameter
Feature	fme_db_operation attribute