Add new patch, issue12480 [trytond] Support GIN index with btree_gin PostgreSQL extension.

issue12480.diff

@@ -0,0 +1,53 @@
+diff --git a/tryton/trytond/trytond/backend/postgresql/table.py b/tryton/trytond/trytond/backend/postgresql/table.py
+index e874ee61c0..44ff97ce9b 100644
+--- a/tryton/trytond/trytond/backend/postgresql/table.py
++++ b/tryton/trytond/trytond/backend/postgresql/table.py
+@@ -647,23 +647,42 @@ class TrigramTranslator(IndexMixin, IndexTranslatorInterface):
+ 
+     @classmethod
+     def score(cls, index):
+-        has_trigram = Transaction().database.has_extension('pg_trgm')
+-        if not has_trigram:
++        database = Transaction().database
++        has_btree_gin = database.has_extension('btree_gin')
++        has_trigram = database.has_extension('pg_trgm')
++        if not has_btree_gin and not has_trigram:
+             return 0
+ 
+         score = 0
+         for _, usage in index.expressions:
+             if usage.__class__.__name__ == 'Similarity':
+-                score += 100
++                if has_trigram:
++                    score += 100
++                else:
++                    score += 50
++            elif has_btree_gin:
++                if usage.__class__.__name__ == 'Range':
++                    score += 90
++                elif usage.__class__.__name__ == 'Equality':
++                    score += 40
+             else:
+                 return 0
+         return score
+ 
+     @classmethod
+     def _get_indexed_expressions(cls, index):
+-        return [
+-            (e, u) for e, u in index.expressions
+-            if u.__class__.__name__ == 'Similarity']
++        database = Transaction().database
++        has_btree_gin = database.has_extension('btree_gin')
++        has_trigram = database.has_extension('pg_trgm')
++
++        def filter(usage):
++            if usage.__class__.__name__ == 'Similarity':
++                return has_trigram
++            elif usage.__class__.__name__ in {'Range', 'Equality'}:
++                return has_btree_gin
++            else:
++                return False
++        return [(e, u) for e, u in index.expressions if filter(u)]
+ 
+     @classmethod
+     def _get_expression_variables(cls, expression, usage):

series

@@ -47,3 +47,5 @@ issue12414.diff # [stock_lot_sled] Check expiration lot in case Shelf Life Time
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 issue12216.diff # [stock] Handle evaluation error of cost price in cost price revision
+
+issue12480.diff # [trytond] Support GIN index with btree_gin PostgreSQL extension