98 lines
2.6 KiB
Python
98 lines
2.6 KiB
Python
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import datetime
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from .base import Database
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class InsertVar:
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"""
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A late-binding cursor variable that can be passed to Cursor.execute
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as a parameter, in order to receive the id of the row created by an
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insert statement.
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"""
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types = {
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"AutoField": int,
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"BigAutoField": int,
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"SmallAutoField": int,
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"IntegerField": int,
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"BigIntegerField": int,
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"SmallIntegerField": int,
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"PositiveBigIntegerField": int,
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"PositiveSmallIntegerField": int,
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"PositiveIntegerField": int,
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"FloatField": Database.NATIVE_FLOAT,
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"DateTimeField": Database.TIMESTAMP,
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"DateField": Database.Date,
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"DecimalField": Database.NUMBER,
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}
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def __init__(self, field):
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internal_type = getattr(field, "target_field", field).get_internal_type()
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self.db_type = self.types.get(internal_type, str)
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self.bound_param = None
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def bind_parameter(self, cursor):
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self.bound_param = cursor.cursor.var(self.db_type)
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return self.bound_param
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def get_value(self):
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return self.bound_param.getvalue()
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class Oracle_datetime(datetime.datetime):
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"""
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A datetime object, with an additional class attribute
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to tell cx_Oracle to save the microseconds too.
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"""
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input_size = Database.TIMESTAMP
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@classmethod
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def from_datetime(cls, dt):
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return Oracle_datetime(
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dt.year,
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dt.month,
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dt.day,
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dt.hour,
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dt.minute,
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dt.second,
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dt.microsecond,
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)
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class BulkInsertMapper:
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BLOB = "TO_BLOB(%s)"
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DATE = "TO_DATE(%s)"
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INTERVAL = "CAST(%s as INTERVAL DAY(9) TO SECOND(6))"
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NCLOB = "TO_NCLOB(%s)"
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NUMBER = "TO_NUMBER(%s)"
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TIMESTAMP = "TO_TIMESTAMP(%s)"
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types = {
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"AutoField": NUMBER,
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"BigAutoField": NUMBER,
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"BigIntegerField": NUMBER,
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"BinaryField": BLOB,
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"BooleanField": NUMBER,
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"DateField": DATE,
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"DateTimeField": TIMESTAMP,
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"DecimalField": NUMBER,
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"DurationField": INTERVAL,
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"FloatField": NUMBER,
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"IntegerField": NUMBER,
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"PositiveBigIntegerField": NUMBER,
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"PositiveIntegerField": NUMBER,
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"PositiveSmallIntegerField": NUMBER,
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"SmallAutoField": NUMBER,
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"SmallIntegerField": NUMBER,
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"TextField": NCLOB,
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"TimeField": TIMESTAMP,
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}
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def dsn(settings_dict):
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if settings_dict["PORT"]:
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host = settings_dict["HOST"].strip() or "localhost"
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return Database.makedsn(host, int(settings_dict["PORT"]), settings_dict["NAME"])
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return settings_dict["NAME"]
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