53 lines
2.0 KiB
Diff
53 lines
2.0 KiB
Diff
diff --git a/tryton/trytond/trytond/backend/postgresql/table.py b/tryton/trytond/trytond/backend/postgresql/table.py
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index 75c4c8b276..8a8fc7a3cb 100644
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--- a/tryton/trytond/trytond/backend/postgresql/table.py
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+++ b/tryton/trytond/trytond/backend/postgresql/table.py
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@@ -571,7 +571,18 @@ class IndexMixin:
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@classmethod
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def _get_indexed_expressions(cls, index):
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- return index.expressions
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+ database = Transaction().database
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+ has_btree_gin = database.has_extension('btree_gin')
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+ has_trigram = database.has_extension('pg_trgm')
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+
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+ def filter(usage):
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+ if usage.__class__.__name__ == 'Similarity':
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+ return has_trigram
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+ elif usage.__class__.__name__ in {'Range', 'Equality'}:
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+ return has_btree_gin
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+ else:
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+ return False
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+ return [(e, u) for e, u in index.expressions if filter(u)]
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@classmethod
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def _get_expression_variables(cls, expression, usage):
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@@ -647,14 +658,24 @@ class TrigramTranslator(IndexMixin, IndexTranslatorInterface):
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@classmethod
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def score(cls, index):
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- has_trigram = Transaction().database.has_extension('pg_trgm')
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- if not has_trigram:
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+ database = Transaction().database
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+ has_btree_gin = database.has_extension('btree_gin')
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+ has_trigram = database.has_extension('pg_trgm')
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+ if not has_btree_gin and not has_trigram:
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return 0
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score = 0
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for _, usage in index.expressions:
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if usage.__class__.__name__ == 'Similarity':
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- score += 100
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+ if has_trigram:
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+ score += 100
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+ else:
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+ score += 50
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+ elif has_btree_gin:
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+ if usage.__class__.__name__ == 'Range':
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+ score += 90
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+ elif usage.__class__.__name__ == 'Equality':
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+ score += 40
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else:
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return 0
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return score
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