9.15. Fixed-Width Text Converter

The fixed-width text converter handles text files that follow a fixed format.

9.15.1. Configuration

The fixed-width converter supports the following configuration keys:

Key	Required	Type	Description
type	yes	String	Must be the string fixed-width.

9.15.2. Field Configuration

The fields element in a fixed-width converter supports additional keys:

Key	Description
start	The starting offset of a field.
width	The width/length of a field.

9.15.3. Transform Functions

The transform element supports referencing the fixed-width substring through $0. Each column will initially be a string, so further transforms may be necessary to create the correct type. See Transformation Functions for available functions.

9.15.4. Example Usage

Suppose you have a SimpleFeatureType that consists of a sole geometry: *geom:Point:srid=4326. Your input data is a fixed-width file where the latitude and longitude are defined as 2 digit numbers, following a single digit prefix:

14555
16565

The following configuration defines an appropriate converter for transforming this into our SimpleFeatureType:

geomesa.converters.example = {
  type = "fixed-width",
  id-field = "uuid()",
  fields = [
    { name = "lat",  start = 1, width = 2, transform = "$0::double" },
    { name = "lon",  start = 3, width = 2, transform = "$0::double" },
    { name = "geom", transform = "point($lon, $lat)" }
  ]
}