Issue with LONG and INT columns when extracting from Oracle

Hello,

I am extracting data from oracle and generating avro schema based on column types from cx_Oracle. I have the following:

` if defaultType == cx_Oracle.NUMBER:

type = {
    "name": name,
    "type": ["null", {"name": name, "type": "long"}]
}
avro_schema.append(type)

` The main issue is that output_type_handler in cx_oracle puts LONG and INT under NUMBER datatype (or at least that’s how dba had the tables setup). When trying to generate the avro file with the schema and I encounter an INT column, I get the following error:

ValueError: 3453453453532423323L (type <type 'long'>) do not match ['null', {'type': 'long'}]

So i tried to convert all int and long to decimal:

` if defaultType == cx_Oracle.NUMBER:

type = {
    "name": name,
    "type": ["null", {"name": name, "type": "bytes", "logicalType": "decimal", "precision": 38, "scale": 0}]
}
avro_schema.append(type)

`

and i get error (i also tried replacing bytes with long) and same issue:

with long:

ValueError: 3453453453532423323L (type <type 'long'>) do not match [{'logicalType': 'decimal', 'scale': 0, 'type': 'long', 'precision': 38}, 'null']

with bytes:

ValueError: 3453232446456443 (type <type 'int'>) do not match [{'logicalType': 'decimal', 'scale': 0, 'type': 'bytes', 'precision': 38}, 'null']

Please let me know if there is any way around this.

I am using python==2.7.12 fastavro==0.21.5 cx-Oracle==6.2

Thank you.

[scottbelden]

I’m going to close this. I don’t have a way to reproduce it and my suspicion is that they are using the C-API to create their NUMBER such that it claims to be type <int> but doesn’t pass the isinstance test.

[scottbelden]

@oyamin Somewhere in your code where you have one of these cx_Oracle.NUMBER objects could you add the following prints and let me know what they return?

# some_value is the cx_Oracle.NUMBER
print("isinstance({}, int) = {}".format(some_value, isinstance(some_value, int)))
print("isinstance({}, long) = {}".format(some_value, isinstance(some_value, long)))
import numbers
print("isinstance({}, numbers.Number) = {}".format(some_value, isinstance(some_value, numbers.Number)))
print("type({}) = {}".format(some_value, type(some_value)))