storj/satellite/satellitedb/dbx/templates/golang.get-first.tmpl

{{- define "signature" -}}
First_{{ .Suffix }}({{ ctxparam .Args }}) (
	{{ param .Row }}, err error)
{{- end -}}

{{- define "invoke" -}}
First_{{ .Suffix }}({{ ctxarg .Args }})
{{- end -}}

{{- define "body" }}
	{{ embedplaceholders .Info }}
	{{ embedsql .Info "__embed_stmt" }}

	var __values []interface{}
	{{ embedvalues .Args "__values" }}

	var __stmt = __sqlbundle_Render(obj.dialect, __embed_stmt)
	obj.logStmt(__stmt, __values...)

  for {
    {{ arg .Row }}, err := func() ({{ param .Row }}, err error) {
    	__rows, err := obj.driver.QueryContext(ctx, __stmt, __values...)
    	if err != nil {
    	  return nil, err
      }
      defer __rows.Close()

      if !__rows.Next() {
        if err := __rows.Err(); err != nil {
          return nil, err
        }
        return nil, nil
      }

      {{ init .Row }}
      err = __rows.Scan({{ addrof (flatten .Row) }})
      if err != nil {
        return nil, err
      }

      return {{ arg .Row }}, nil
    }()
    if err != nil {
      if obj.shouldRetry(err) {
        continue
      }
      return nil, obj.makeErr(err)
    }
    return {{ arg .Row }}, nil
  }
{{ end -}}