feat: Add asset language property (#173)

* feat: Add asset language property * feat: Enforce that `linz:language` is a string We don't need to test on the item as well because we've de-duped that part of the schema. * feat: Enforce that `linz:language` is an RFC 5646 language tag Got the language tags using `jq '.[].lang' <(curl --location https://datahub.io/core/language-codes/r/ietf-language-tags.json)`.
linz · Nov 22, 2021 · 66bd0d5 · 66bd0d5
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diff --git a/extensions/linz/README.md b/extensions/linz/README.md
@@ -107,11 +107,12 @@ This expands on the [provider object in the STAC spec](https://github.com/radian
 
 These fields apply to assets within both items and collections.
 
-| Field Name              | Type   | Description                                                                                             |
-| ----------------------- | ------ | ------------------------------------------------------------------------------------------------------- |
-| assets/\*/created       | string | **REQUIRED**. Creation date and time of the asset, in UTC.                                              |
-| assets/\*/updated       | string | **REQUIRED**. Date and time the asset was last updated, in UTC.                                         |
-| assets/\*/file:checksum | string | **REQUIRED**. See [reference](https://github.com/stac-extensions/file/blob/v2.0.0/README.md#checksums). |
+| Field Name              | Type   | Description                                                                                                                     |
+| ----------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------- |
+| assets/\*/created       | string | **REQUIRED**. Creation date and time of the asset, in UTC.                                                                      |
+| assets/\*/updated       | string | **REQUIRED**. Date and time the asset was last updated, in UTC.                                                                 |
+| assets/\*/file:checksum | string | **REQUIRED**. See [reference](https://github.com/stac-extensions/file/blob/v2.0.0/README.md#checksums).                         |
+| linz:language           | string | **REQUIRED**. [RFC 5646 language tag](https://datatracker.ietf.org/doc/html/rfc5646), for example `en-NZ` (New Zealand English) |
 
 ## Extensions
 

diff --git a/extensions/linz/examples/collection.json b/extensions/linz/examples/collection.json
@@ -78,6 +78,7 @@
       "created": "2000-01-01T00:00:00Z",
       "updated": "2020-01-01T00:00:00Z",
       "file:checksum": "1220e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+      "linz:language": "en-NZ",
       "proj:epsg": 32659
     }
   }

diff --git a/extensions/linz/examples/item.json b/extensions/linz/examples/item.json
@@ -40,7 +40,8 @@
       "href": "https://example.com/examples/file.xyz",
       "created": "2000-01-01T00:00:00Z",
       "updated": "2020-01-01T00:00:00Z",
-      "file:checksum": "1220e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+      "file:checksum": "1220e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+      "linz:language": "mi"
     }
   }
 }