谷歌云BigQuery未定义ValueList

Question

I'm working with the BigQuery API on Google Cloud Platform and I've completed the Golang client library installation.

When I try to compile, I see the following errors:

[root@server ~]$ go install github.com/user/program
# github.com/user/program/handler
go/src/github.com/user/program/handler/file1.go:228: undefined:
"cloud.google.com/go/bigquery".ValueList
go/src/github.com/user/program/handler/file1.go:259: undefined: 
"cloud.google.com/go/bigquery".ValueList

The offending line for 228 is:

227 for {
228     var values bigquery.ValueList
229     err := it.Next(&values)

At the top of the file I import the package, as normally

import "cloud.google.com/go/bigquery"

and have taken care to install the client library for Golang https://cloud.google.com/bigquery/docs/reference/libraries#client-libraries-install-go

I can see that the cloud.google.com package is contained within my GOPATH and I see the ValueList type decleration inside of a file in there. It is therefore puzzling that I'm getting this error.

What's more: I can compile this fine on my Windows machine with no errors. It's only when I try to do the same thing on my CentOS VM that I run into this. Both are running go version go1.6.3.

Thank you.

Answer 1

@Spikey,

Hi, please make sure you've installed correct client. Here's why:

1. After installing go get -u cloud.google.com/go/bigquery I see that they do not have an exported ValueList type(!). Only valuelist, i.e. unexported. Check line 39 of ~go/src/google.golang.org/cloud/bigquery/value.go

2. However, they do mention ValueList as an exported type in their docs(!), for example:

   • line 52 of ~go/src/google.golang.org/cloud/bigquery/doc.go
   • https://godoc.org/cloud.google.com/go/bigquery
   • line 164 of ~/go/src/google.golang.org/cloud/README.md

3. Also, ValueList is an exported type if looking directly at: https://github.com/GoogleCloudPlatform/google-cloud-go/blob/master/bigquery/value.go

So there's a confusion about installing a correct Google client.

Hope this helps!