gocql MapScanCAS Usage

[Dave Rose]

Hi,

I am hoping i can get an assist here. I am trying to use the gocql driver with INSERT IF ... EXISTS but my geocode is not quite right. 

http://play.golang.org/p/N_-cz7mfde

The error is:

# command-line-arguments

./networkdataloadhack.go:108: not enough arguments in call to session.Query("INSERT INTO networks (provider_name,target_platform,source_field,source_value,\n            target_value,active,sequence,created_by_user)\n                VALUES (?, ?, ?, ?, ?, ?, ?, ?) IF NOT EXISTS", j.Value.(*Network).providerName, j.Value.(*Network).targetPlatform, j.Value.(*Network).sourceField, j.Value.(*Network).sourceValue, j.Value.(*Network).targetValue, j.Value.(*Network).active, j.Value.(*Network).sequence, j.Value.(*Network).createdByUser).MapScanCAS

[Kiki Sugiaman]

I've never used gocql so I'm making a few assumptions.
If MapScanCAS is the one with this signature: https://godoc.org/github.com/gocql/gocql#Query.MapScanCAS
then it takes 1 arg. In your code, you are calling it without any.

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[Ben Hood]

Hi Dave,

It's slightly difficult to read the snippet you posted but on face
value it looks like you might have missed out the destination for the
result data.

Here is an example for MapScanCAS from the test suite:

https://github.com/gocql/gocql/blob/ec1f5626d6984ebe4da69779317a76f3a6698381/cassandra_test.go#L363

BTW, it might be better to ask this question on the gocql mailing list.

Cheers,

Ben

[Dave Rose]

Thanks Ben. I'll use the gocql list. I appreciate your help.