mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-22 00:22:01 -04:00
Mike Bayer
f03c791879
:meth:`.TypeEngine.column_expression` methods where these methods would not work if the target type were part of a :class:`.Variant`, or other target type of a :class:`.TypeDecorator`. Additionally, the SQL compiler now calls upon the dialect-level implementation when it renders these methods so that dialects can now provide for SQL-level processing for built-in types. Change-Id: Ic7b39575184db582e628e6ecee48dcda7d03a817 Fixes: #3981
81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
from sqlalchemy.engine import default
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from sqlalchemy.testing import fixtures, AssertsExecutionResults, profiling
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from sqlalchemy import MetaData, Table, Column, Integer, String, select
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t1 = t2 = None
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class CompileTest(fixtures.TestBase, AssertsExecutionResults):
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__requires__ = 'cpython',
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__backend__ = True
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@classmethod
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def setup_class(cls):
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global t1, t2, metadata
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metadata = MetaData()
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t1 = Table('t1', metadata,
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Column('c1', Integer, primary_key=True),
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Column('c2', String(30)))
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t2 = Table('t2', metadata,
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Column('c1', Integer, primary_key=True),
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Column('c2', String(30)))
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cls.dialect = default.DefaultDialect()
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# do a "compile" ahead of time to load
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# deferred imports, use the dialect to pre-load
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# dialect-level types
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t1.insert().compile(dialect=cls.dialect)
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# go through all the TypeEngine
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# objects in use and pre-load their _type_affinity
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# entries.
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for t in (t1, t2):
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for c in t.c:
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c.type._type_affinity
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from sqlalchemy.sql import sqltypes
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for t in list(sqltypes._type_map.values()):
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t._type_affinity
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@profiling.function_call_count()
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def test_insert(self):
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t1.insert().compile(dialect=self.dialect)
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@profiling.function_call_count(variance=.15)
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def test_update(self):
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t1.update().compile(dialect=self.dialect)
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def test_update_whereclause(self):
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t1.update().where(t1.c.c2 == 12).compile(dialect=self.dialect)
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@profiling.function_call_count()
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def go():
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t1.update().where(t1.c.c2 == 12).compile(dialect=self.dialect)
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go()
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def test_select(self):
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# give some of the cached type values
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# a chance to warm up
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s = select([t1], t1.c.c2 == t2.c.c1)
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s.compile(dialect=self.dialect)
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@profiling.function_call_count()
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def go():
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s = select([t1], t1.c.c2 == t2.c.c1)
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s.compile(dialect=self.dialect)
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go()
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def test_select_labels(self):
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# give some of the cached type values
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# a chance to warm up
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s = select([t1], t1.c.c2 == t2.c.c1).apply_labels()
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s.compile(dialect=self.dialect)
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@profiling.function_call_count()
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def go():
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s = select([t1], t1.c.c2 == t2.c.c1).apply_labels()
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s.compile(dialect=self.dialect)
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go()
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