Remove raw SQL condition from *CounterTrigger.

The `pgtrigger.Condition('''OLD.proj_epsg IS DISTINCT FROM NEW.proj_epsg''')`
condition is equivalent to `pgtrigger.AnyChange('proj_epsg')`, which is easier
to inspect and reason about. This change replaces the former with the latter.

Author: adk-swisstopo

app/stac_api/migrations/0072_remove_collectionasset_upd_dec_col_asset_proj_epsg_trigger_and_more.py

@@ -0,0 +1,60 @@
+# Generated by Django 5.2.11 on 2026-06-03 06:12
+
+import pgtrigger.compiler
+import pgtrigger.migrations
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('stac_api', '0071_remove_asset_update_asset_item_file_size_trigger_and_more'),
+    ]
+
+    operations = [
+        pgtrigger.migrations.RemoveTrigger(
+            model_name='collectionasset',
+            name='upd_dec_col_asset_proj_epsg_trigger',
+        ),
+        pgtrigger.migrations.RemoveTrigger(
+            model_name='collectionasset',
+            name='upd_inc_col_asset_proj_epsg_trigger',
+        ),
+        pgtrigger.migrations.AddTrigger(
+            model_name='collectionasset',
+            trigger=pgtrigger.compiler.Trigger(
+                name='upd_dec_col_asset_proj_epsg_trigger',
+                sql=pgtrigger.compiler.UpsertTriggerSql(
+                    condition='WHEN (OLD."proj_epsg" IS DISTINCT FROM (NEW."proj_epsg"))',
+                    declare=
+                    'DECLARE asset_instance stac_api_collectionasset%ROWTYPE; related_collection_id INT;',
+                    func=
+                    "\n        asset_instance = OLD;\n\n        related_collection_id = asset_instance.collection_id;\n\n        -- Remove entry when count will reach 0\n        DELETE FROM stac_api_projepsgcount\n        WHERE collection_id = related_collection_id\n            AND value = asset_instance.proj_epsg\n            AND count = 1;\n\n        IF NOT FOUND THEN\n        UPDATE stac_api_projepsgcount\n        SET count = count-1\n        WHERE collection_id = related_collection_id\n            AND value = asset_instance.proj_epsg;\n\n        RAISE INFO\n            'stac_api_projepsgcount (collection_id, value) (% %) count updated, due to asset.name=% update.',\n            related_collection_id, asset_instance.proj_epsg, asset_instance.name;\n\n        RETURN asset_instance;\n        END IF;\n\n        RAISE INFO\n            'stac_api_projepsgcount (collection_id, value) (% %) deleted, due to asset.name=% update.',\n            related_collection_id, asset_instance.proj_epsg, asset_instance.name;\n\n        RETURN asset_instance;\n        ",
+                    hash='56e4e1fae63cd83c85410bb5e49f1672f644c015',
+                    operation='UPDATE',
+                    pgid='pgtrigger_upd_dec_col_asset_proj_epsg_trigger_07a9d',
+                    table='stac_api_collectionasset',
+                    when='AFTER'
+                )
+            ),
+        ),
+        pgtrigger.migrations.AddTrigger(
+            model_name='collectionasset',
+            trigger=pgtrigger.compiler.Trigger(
+                name='upd_inc_col_asset_proj_epsg_trigger',
+                sql=pgtrigger.compiler.UpsertTriggerSql(
+                    condition='WHEN (OLD."proj_epsg" IS DISTINCT FROM (NEW."proj_epsg"))',
+                    declare=
+                    'DECLARE asset_instance stac_api_collectionasset%ROWTYPE; related_collection_id INT;',
+                    func=
+                    "\n        asset_instance = NEW;\n\n        related_collection_id = asset_instance.collection_id;\n\n        INSERT INTO stac_api_projepsgcount (collection_id, value, count)\n        VALUES (related_collection_id, asset_instance.proj_epsg, 1)\n        ON CONFLICT (collection_id, value)\n        DO UPDATE SET count = stac_api_projepsgcount.count+1;\n\n        RAISE INFO\n            'projepsgcount (collection_id, value) (% %) count updated, due to asset.name=% update.',\n            related_collection_id, asset_instance.proj_epsg, asset_instance.name;\n\n        RETURN asset_instance;\n        ",
+                    hash='0626a8387cba7cffb40dd81594e3d5c5c16e9ea4',
+                    operation='UPDATE',
+                    pgid='pgtrigger_upd_inc_col_asset_proj_epsg_trigger_d717d',
+                    table='stac_api_collectionasset',
+                    when='AFTER'
+                )
+            ),
+        ),
+    ]

app/stac_api/pgtriggers.py

@@ -327,7 +327,7 @@ class IncreaseCounterTrigger(pgtrigger.Trigger):
         DecreaseCounterTrigger(
             name='upd_dec_col_asset_proj_epsg_trigger',
             operation=pgtrigger.Update,
-            condition=pgtrigger.Condition('''OLD.proj_epsg IS DISTINCT FROM NEW.proj_epsg''')
+            condition=pgtrigger.AnyChange('proj_epsg')
         ),
         DecreaseCounterTrigger(
             name='del_col_asset_proj_epsg_trigger',
@@ -336,7 +336,7 @@ class IncreaseCounterTrigger(pgtrigger.Trigger):
         IncreaseCounterTrigger(
             name='upd_inc_col_asset_proj_epsg_trigger',
             operation=pgtrigger.Update,
-            condition=pgtrigger.Condition('''OLD.proj_epsg IS DISTINCT FROM NEW.proj_epsg''')
+            condition=pgtrigger.AnyChange('proj_epsg')
         ),
         IncreaseCounterTrigger(
             name='add_col_asset_proj_epsg_trigger',