write_read_null_float64_array project_id:, instance_id:, database_id:

in spanner/spanner_samples.rb [1911:1949]

• 26 lines of code
• 1 McCabe index (conditional complexity)

def write_read_null_float64_array project_id:, instance_id:, database_id:
  
  
  
  

  require "google/cloud/spanner"
  require "google/cloud/spanner/admin/database"
  require "securerandom"

  database_admin_client = Google::Cloud::Spanner::Admin::Database.database_admin

  db_path = database_admin_client.database_path project: project_id,
                                                instance: instance_id,
                                                database: database_id

  job = database_admin_client.update_database_ddl database: db_path, statements: [
    "CREATE TABLE Boxes (
      BoxId             STRING(36) NOT NULL,
      Heights           ARRAY<INT64>,
      Weights           ARRAY<FLOAT64>,
      ErrorChecks       ARRAY<BOOL>
      ) PRIMARY KEY (BoxId)"
  ]
  job.wait_until_done!

  spanner = Google::Cloud::Spanner.new project: project_id
  client = spanner.client instance_id, database_id

  box_id = SecureRandom.uuid
  client.insert "Boxes", [{ BoxId: box_id, Weights: [nil, nil, nil] }]
  results = client.read "Boxes", [:BoxId, :Weights], keys: box_id

  results.rows.each do |row|
    row["Weights"].each { |weight| puts weight.nil? }
  end
  
end