stac-item Y Builds a STAC item with nested properties and a dynamic assets object from repeated asset rows. Demonstrates the JSON Object Builder: typed field mappings, JSON Pointer insertion at /properties and /assets, dynamic object keys from the asset_key field, and grouped merging of all asset rows of an item into one JSON object. The result is written to ${OUTPUT_DIR}/stac-item.json. Normal OUTPUT_DIR ${java.io.tmpdir} N 1000 100 - 2026/09/01 00:00:00.000 - 2026/09/01 00:00:00.000 251 232 201 90 58 14 N 90 58 14 N Segoe UI 11 78 64 32 One row per asset. Item fields repeat on every row; the JSON Object Builder merges all rows of an item into one JSON document with a dynamic "assets" object (grouped by item_id, input sorted by item_id). 655 Read STAC metadataSort by itemY Sort by itemAsset objectY Asset objectItem baseY Item basePropertiesY PropertiesAssetsY AssetsWrite STAC itemY DataGrid Read STAC metadata ch.so.agi.gemeindegrenzen-2026-09-01 ch.so.agi.gemeindegrenzen Gemeindegrenzen Kanton Solothurn 2026-09-01T00:00:00Z [7.34, 47.07, 8.03, 47.5] {"type":"Polygon","coordinates":[[[7.34,47.07],[8.03,47.07],[8.03,47.5],[7.34,47.5],[7.34,47.07]]]} geoparquet GeoParquet https://files.geo.so.ch/ch.so.agi.gemeindegrenzen/2026-09-01/gemeindegrenzen.parquet application/vnd.apache.parquet ch.so.agi.gemeindegrenzen-2026-09-01 ch.so.agi.gemeindegrenzen Gemeindegrenzen Kanton Solothurn 2026-09-01T00:00:00Z [7.34, 47.07, 8.03, 47.5] {"type":"Polygon","coordinates":[[[7.34,47.07],[8.03,47.07],[8.03,47.5],[7.34,47.5],[7.34,47.07]]]} interlis INTERLIS XTF https://files.geo.so.ch/ch.so.agi.gemeindegrenzen/2026-09-01/gemeindegrenzen.xtf application/xml item_id String -1 -1 N collection String -1 -1 N title String -1 -1 N datetime String -1 -1 N bbox_json String -1 -1 N geometry_json String -1 -1 N asset_key String -1 -1 N asset_title String -1 -1 N asset_href String -1 -1 N asset_type String -1 -1 N N 1 80120 none SortRows Sort by item ${java.io.tmpdir} out 1000000 N N item_id Y N N 0 N asset_key Y N N 0 N N 1 320120 none JSON_OBJECT_BUILDER Asset object asset_json JSON N CREATE LITERAL href FIELD asset_href AUTO N LITERAL type FIELD asset_type AUTO N LITERAL title FIELD asset_title AUTO N LITERAL roles LITERAL ["data"] JSON N N 1 560120 none JSON_OBJECT_BUILDER Item base item_json JSON N CREATE LITERAL stac_version LITERAL 1.1.0 STRING N LITERAL type LITERAL Feature STRING N LITERAL id FIELD item_id AUTO N LITERAL collection FIELD collection AUTO N LITERAL bbox FIELD bbox_json JSON N LITERAL geometry FIELD geometry_json JSON N N 1 800120 none JSON_OBJECT_BUILDER Properties item_json JSON N INSERT item_json /properties LITERAL datetime FIELD datetime AUTO N LITERAL title FIELD title AUTO N N 1 1040120 none JSON_OBJECT_BUILDER Assets item_json JSON Y INSERT item_json /assets FIELD asset_key FIELD asset_json JSON N item_id N 1 1280120 none TextFileOutput Write STAC item None ; " N N

N

UNIX UTF-8 N Y ${OUTPUT_DIR}/stac-item N Y json N N N N N N N N N item_json JSON both -1 -1 N 1 1520120 none