This is a reference documentation of the GML (Features) reader in hale studio. Usually you will not need this reference, as in hale studio the configuration of I/O providers is done via the respective wizards for import and export. Where this reference can come in handy is if you want launch a transformation via the command line.
| Name | GML (Features) |
|---|---|
| Identifier | eu.esdihumboldt.hale.io.gml.reader |
| Implementation | eu.esdihumboldt.hale.io.gml.reader.internal.GmlInstanceReader |
Following are the specific configuration parameters for this reader.
States if the root element should be ignored and thus not be loaded as an object itself.
| Setting name | ignoreRoot |
|---|---|
| Default value | true |
States if parsing of XML instances is done strictly according to the schema or if invalid property paths are allowed, e.g. if the element order in the data is not correct.
| Setting name | strict |
|---|---|
| Default value | false |
States if parsing of the XML instances should allow types and properties with namespaces that differ from those defined in the schema.
| Setting name | ignoreNamespaces |
|---|---|
| Default value | false |
Combine composite geometries (e.g. CompositeSurface, Surface) to a single (Simple Feature) geometry if possible.
| Setting name | geometry.combineComposites |
|---|---|
| Default value | true |
| By default this option is enabled |
Activate pagination for WFS GetFeature requests
| Setting name | paginateRequest |
|---|---|
| Default value | false |
| By default this option is disabled |
Number of features to retrieve at most in a single WFS GetFeature request
| Setting name | featuresPerWfsRequest |
|---|
Ignore number of matched features reported by the WFS
| Setting name | ignoreNumberMatched |
|---|
The identifier of the algorithm to use for the interpolation of Arc and Circle geometries
| Setting name | interpolation.algorithm |
|---|---|
| Example value | grid |
| Use the grid interpolation algorithm | |
| Default value | segment |
| The default interpolation algorithm splits arcs in smaller segments based on the maximum positional error |
Specify the Maximum positional error for geometry interpolation
| Setting name | interpolation.maxError |
|---|---|
| Default value | 0.1 |
| By default 0.1(unit) is supplied |
Moves all geometries to the interpolation grid to allow for topological consistency (only applicable if the grid interpolation algorithm is selected)
| Setting name | interpolation.grid.moveAllToGrid |
|---|---|
| Example value | true |
| will move all coordinates of all geometries to universal grid | |
| Default value | false |
| Leave non-interpolated geometries untouched |
The following configuration parameters are shared for all instance readers.
For cases where the spatial reference system cannot be detected
from the data you can specify a default SRS to assume for these
geometries. The SRS can be provided as code (with prefix
code:
) or as WKT (with prefix
wkt:
)
| Setting name | defaultSrs |
|---|---|
| Example value | code:EPSG:25832 |
The following configuration parameters are shared for all I/O providers.
During import the content type is tried to be auto-detected, for export this is not possible, but I/O providers may have a default content type associated. If an I/O provider only supports one content type, it's usually not necessary to set this parameter. In any case you can override the content type to use/assume using a content type identifier (see the list of supported content types at the bottom of the page).
| Setting name | contentType |
|---|---|
| Example value | eu.esdihumboldt.hale.io.gml |
Specifying a character encoding is important especially for the
import, so data is interpreted correctly. Not every I/O provider
may respect this setting though (e.g. if the encoding is given by
the data source).
Specify a character encoding by its name
as recognised by Java.
| Setting name | charset |
|---|---|
| Example value | UTF-8 |
eu.esdihumboldt.hale.io.gml)eu.esdihumboldt.hale.io.gml.gzip)