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[SPARK-7978] [SQL] [PYSPARK] DecimalType should not be singleton #6532

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[SPARK-7978] [SQL] [PYSPARK] DecimalType should not be singleton #6532

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1425359
DecimalType should not be singleton
May 31, 2015
c7fcbce
Update tests.py
May 31, 2015
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9 changes: 9 additions & 0 deletions python/pyspark/sql/tests.py
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Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,15 @@ def test_data_type_eq(self):
lt2 = pickle.loads(pickle.dumps(LongType()))
self.assertEquals(lt, lt2)

# regression test for SPARK-7978
def test_decimal_type(self):
t1 = DecimalType()
t2 = DecimalType(10, 2)
self.assertTrue(t2 is not t1)
self.assertNotEqual(t1, t2)
t3 = DecimalType(8)
self.assertNotEqual(t2, t3)


class SQLTests(ReusedPySparkTestCase):

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18 changes: 16 additions & 2 deletions python/pyspark/sql/types.py
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Expand Up @@ -97,8 +97,6 @@ class AtomicType(DataType):
"""An internal type used to represent everything that is not
null, UDTs, arrays, structs, and maps."""

__metaclass__ = DataTypeSingleton


class NumericType(AtomicType):
"""Numeric data types.
Expand All @@ -109,6 +107,8 @@ class IntegralType(NumericType):
"""Integral data types.
"""

__metaclass__ = DataTypeSingleton


class FractionalType(NumericType):
"""Fractional data types.
Expand All @@ -119,26 +119,36 @@ class StringType(AtomicType):
"""String data type.
"""

__metaclass__ = DataTypeSingleton


class BinaryType(AtomicType):
"""Binary (byte array) data type.
"""

__metaclass__ = DataTypeSingleton


class BooleanType(AtomicType):
"""Boolean data type.
"""

__metaclass__ = DataTypeSingleton


class DateType(AtomicType):
"""Date (datetime.date) data type.
"""

__metaclass__ = DataTypeSingleton


class TimestampType(AtomicType):
"""Timestamp (datetime.datetime) data type.
"""

__metaclass__ = DataTypeSingleton


class DecimalType(FractionalType):
"""Decimal (decimal.Decimal) data type.
Expand Down Expand Up @@ -172,11 +182,15 @@ class DoubleType(FractionalType):
"""Double data type, representing double precision floats.
"""

__metaclass__ = DataTypeSingleton


class FloatType(FractionalType):
"""Float data type, representing single precision floats.
"""

__metaclass__ = DataTypeSingleton


class ByteType(IntegralType):
"""Byte data type, i.e. a signed integer in a single byte.
Expand Down