Initial import from Docker volume

model/fields/numeric.py

@@ -0,0 +1,47 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from decimal import Decimal
+
+from sql import Cast, CombiningQuery, Literal, Select
+
+from trytond import backend
+
+from .field import order_method
+from .float import Float
+
+
+class Numeric(Float):
+    '''
+    Define a numeric field (``decimal``).
+    '''
+    _type = 'numeric'
+    _sql_type = 'NUMERIC'
+    _py_type = Decimal
+
+    @order_method
+    def convert_order(self, name, tables, Model):
+        columns = super().convert_order(name, tables, Model)
+        if backend.name == 'sqlite':
+            # Must be cast because Decimal is stored as bytes
+            columns = [Cast(c, self.sql_type().base) for c in columns]
+        return columns
+
+    def _domain_column(self, operator, column):
+        column = super()._domain_column(operator, column)
+        if backend.name == 'sqlite':
+            # Must be casted as Decimal is stored as bytes
+            column = Cast(column, self.sql_type().base)
+        return column
+
+    def _domain_value(self, operator, value):
+        value = super(Numeric, self)._domain_value(operator, value)
+        if backend.name == 'sqlite':
+            if isinstance(value, (Select, CombiningQuery)):
+                return value
+            # Must be casted as Decimal is adapted to bytes
+            type_ = self.sql_type().base
+            if operator in ('in', 'not in'):
+                return [Cast(Literal(v), type_) for v in value]
+            elif value is not None:
+                return Cast(Literal(value), type_)
+        return value