Temporal Filtering Support for Vector and Raster Downloads

[dsuren1]

Description

MapStore currently does not support temporal filtering when downloading vector or raster data.

GeoServer provides temporal filtering capabilities that can be leveraged to address this limitation:

• Vector downloads: GeoServer supports temporal filtering for WFS downloads using OGC Filters.

• Raster downloads: GeoServer WPS gs:Download supports filtering ImageMosaic granules by time:

  • For a specific timestamp, TIFF and ArcGrid formats can be used.
  • For a time range matching multiple granules, NetCDF (application/x-netcdf) can be used to download the resulting multidimensional dataset. Note: NetCDF output requires the wps-download-netcdf and netcdf-out GeoServer extensions to be installed.

Acceptance criteria

Vector

• Identify the date/time attribute for vector sources.
• Support temporal filtering in WFS using OGC Filters.
• Support temporal filtering in WPS gs:Download using the filter parameter.
• Preserve existing spatial and attribute filtering.

Raster

• Support temporal filtering in WPS gs:Download using the filter parameter.
• Fetch the raster time attribute from the layer's coverage resource when required.
• If a WPS request already contains a time parameter, pass it through unchanged.
• If no time parameter exists, fall back to resolving the time attribute from the layer's dimension configuration and build the filter.
• Display supported formats based on the temporal filter:
  • Single timestamp: TIFF / ArcGrid.
  • Time range: NetCDF where supported.

UI

• Update the download workflow and options based on the selected raster implementation and temporal filter.
• Preserve backward compatibility with the existing download workflow.
• Update i18n for all new UI elements.

Other useful information

Security vulnerabilities

Do not report security vulnerabilities in public issues.

If you believe you have found a vulnerability in MapStore, please use GitHub private vulnerability reporting or contact the security address listed in SECURITY.md.

[dsuren1]

Mock

• When mosaic raster layer has one time attribute, it will be used avoiding any fallback call
• When a mosaic raster layer has multiple time-related attributes, a dropdown will be displayed, allowing the user to select the Time Attribute. By default, the first attribute is selected.
  
• When a time range is applied, GeoServer currently supports only NetCDF format, which will be used for the download. However, if the extension is missing from Geoserver the download will gracefully fail