Get a routine

  import 
  
 ( 
  
 "context" 
  
 "fmt" 
  
 "io" 
  
 "cloud.google.com/go/bigquery" 
 ) 
 // getRoutine demonstrates getting a routine's metadata via the API. 
 func 
  
 getRoutine 
 ( 
 w 
  
 io 
 . 
 Writer 
 , 
  
 projectID 
 , 
  
 datasetID 
 , 
  
 routineID 
  
 string 
 ) 
  
 error 
  
 { 
  
 // projectID := "my-project-id" 
  
 // datasetID := "mydatasetid" 
  
 // routineID := "myroutineid" 
  
 ctx 
  
 := 
  
 context 
 . 
 Background 
 () 
  
 client 
 , 
  
 err 
  
 := 
  
 bigquery 
 . 
 NewClient 
 ( 
 ctx 
 , 
  
 projectID 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "bigquery.NewClient: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 defer 
  
 client 
 . 
 Close 
 () 
  
 meta 
 , 
  
 err 
  
 := 
  
 client 
 . 
 Dataset 
 ( 
 datasetID 
 ). 
 Routine 
 ( 
 routineID 
 ). 
 Metadata 
 ( 
 ctx 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "couldn't retrieve routine metadata: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 // Print information about the routine. 
  
 fmt 
 . 
 Fprintf 
 ( 
 w 
 , 
  
 "Routine %s:\n" 
 , 
  
 routineID 
 ) 
  
 fmt 
 . 
 Fprintf 
 ( 
 w 
 , 
  
 "\tType %s:\n" 
 , 
  
 meta 
 . 
 Type 
 ) 
  
 fmt 
 . 
 Fprintf 
 ( 
 w 
 , 
  
 "\tLanguage %s:\n" 
 , 
  
 meta 
 . 
 Language 
 ) 
  
 fmt 
 . 
 Fprintln 
 ( 
 w 
 , 
  
 "\tArguments:" 
 ) 
  
 for 
  
 _ 
 , 
  
 v 
  
 := 
  
 range 
  
 meta 
 . 
 Arguments 
  
 { 
  
 fmt 
 . 
 Fprintf 
 ( 
 w 
 , 
  
 "\t\tName: %s\tType: %v" 
 , 
  
 v 
 . 
 Name 
 , 
  
 v 
 . 
 DataType 
 ) 
  
 } 
  
 return 
  
 nil 
 } 
 

  import 
  
 com.google.cloud.bigquery. BigQuery 
 
 ; 
 import 
  
 com.google.cloud.bigquery. BigQueryException 
 
 ; 
 import 
  
 com.google.cloud.bigquery. BigQueryOptions 
 
 ; 
 import 
  
 com.google.cloud.bigquery. Routine 
 
 ; 
 import 
  
 com.google.cloud.bigquery. RoutineId 
 
 ; 
 // Sample to get a routine 
 public 
  
 class 
 GetRoutine 
  
 { 
  
 public 
  
 static 
  
 void 
  
 main 
 ( 
 String 
 [] 
  
 args 
 ) 
  
 { 
  
 // TODO(developer): Replace these variables before running the sample. 
  
 String 
  
 datasetName 
  
 = 
  
 "MY_DATASET_NAME" 
 ; 
  
 String 
  
 routineName 
  
 = 
  
 "MY_ROUTINE_NAME" 
 ; 
  
 getRoutine 
 ( 
 datasetName 
 , 
  
 routineName 
 ); 
  
 } 
  
 public 
  
 static 
  
 void 
  
 getRoutine 
 ( 
 String 
  
 datasetName 
 , 
  
 String 
  
 routineName 
 ) 
  
 { 
  
 try 
  
 { 
  
 // Initialize client that will be used to send requests. This client only needs to be created 
  
 // once, and can be reused for multiple requests. 
  
  BigQuery 
 
  
 bigquery 
  
 = 
  
  BigQueryOptions 
 
 . 
 getDefaultInstance 
 (). 
 getService 
 (); 
  
  RoutineId 
 
  
 routineId 
  
 = 
  
  RoutineId 
 
 . 
 of 
 ( 
 datasetName 
 , 
  
 routineName 
 ); 
  
  Routine 
 
  
 routine 
  
 = 
  
 bigquery 
 . 
  getRoutine 
 
 ( 
 routineId 
 ); 
  
 System 
 . 
 out 
 . 
 println 
 ( 
 "Routine retrieved successfully" 
  
 + 
  
 routine 
 . 
 getDescription 
 ()); 
  
 } 
  
 catch 
  
 ( 
  BigQueryException 
 
  
 e 
 ) 
  
 { 
  
 System 
 . 
 out 
 . 
 println 
 ( 
 "Routine not retrieved. \n" 
  
 + 
  
 e 
 . 
 toString 
 ()); 
  
 } 
  
 } 
 } 
 

  // Import the Google Cloud client library and create a client 
 const 
  
 { 
 BigQuery 
 } 
  
 = 
  
 require 
 ( 
 ' @google-cloud/bigquery 
' 
 ); 
 const 
  
 bigquery 
  
 = 
  
 new 
  
  BigQuery 
 
 (); 
 async 
  
 function 
  
 getRoutine 
 () 
  
 { 
  
 // Gets an existing routine named "my_routine" in "my_dataset". 
  
 /** 
 * TODO(developer): Uncomment the following lines before running the sample. 
 */ 
  
 // const datasetId = 'my_dataset'; 
  
 // const routineId = 'my_routine'; 
  
 const 
  
 dataset 
  
 = 
  
 bigquery 
 . 
 dataset 
 ( 
 datasetId 
 ); 
  
 // Create routine reference and make API call 
  
 const 
  
 [ 
 routine 
 ] 
  
 = 
  
 await 
  
 dataset 
 . 
 routine 
 ( 
 routineId 
 ). 
 get 
 (); 
  
 console 
 . 
 log 
 ( 
  
 `Routine 
 ${ 
 routine 
 . 
 metadata 
 . 
 routineReference 
 . 
 routineId 
 } 
 retrieved.` 
 , 
  
 ); 
 } 
 getRoutine 
 (); 
 

  from 
  
 google.cloud 
  
 import 
  bigquery 
 
 # Construct a BigQuery client object. 
 client 
 = 
  bigquery 
 
 . 
  Client 
 
 () 
 # TODO(developer): Set the fully-qualified ID for the routine. 
 # routine_id = "my-project.my_dataset.my_routine" 
 routine 
 = 
 client 
 . 
  get_routine 
 
 ( 
 routine_id 
 ) 
 # Make an API request. 
 print 
 ( 
 "Routine ' 
 {} 
 ':" 
 . 
 format 
 ( 
 routine 
 . 
 reference 
 )) 
 print 
 ( 
 " 
 \t 
 Type: ' 
 {} 
 '" 
 . 
 format 
 ( 
 routine 
 . 
 type_ 
 )) 
 print 
 ( 
 " 
 \t 
 Language: ' 
 {} 
 '" 
 . 
 format 
 ( 
 routine 
 . 
  language 
 
 )) 
 print 
 ( 
 " 
 \t 
 Arguments:" 
 ) 
 for 
 argument 
 in 
 routine 
 . 
  arguments 
 
 : 
 print 
 ( 
 " 
 \t\t 
 Name: ' 
 {} 
 '" 
 . 
 format 
 ( 
 argument 
 . 
 name 
 )) 
 print 
 ( 
 " 
 \t\t 
 Type: ' 
 {} 
 '" 
 . 
 format 
 ( 
 argument 
 . 
  data_type 
 
 ))