Class

Class( name, [database] )
Class( name )
ScopedClass( name, database )
Class( name, [database] )
Class( name, [database] )
class_( name, [database] )
Class( name, [database] )
Class( name, [database] )

Description

This function is deprecated as of Fauna 2.7.0. Use Collection instead.

A Class was renamed to a Collection in Fauna 2.7.0. This function continues to exist for compatibility with older drivers.

The Class function returns a valid Reference for the specified class (now, collection) name, in the specified child database. If a child database is not specified, the returned class (now, collection) reference belongs to the current database.

When a child database is specified, an admin key must be used to call Class (server or client keys, or ABAC tokens, cannot be used to access a child database).

Also, Go does not support optional function parameters, nor function overloading. To specify a child database using the Go driver, call the ScopedClass function instead of Class.

Parameters

Argument Type Definition and Requirements

name

The name of a class (now, collection).

database

Optional - A Reference to a child database. If not specified, the current database is used.

A Reference to a child database.

Optional - A Reference to a child database. If not specified, the current database is used.

Optional - A Reference to a child database. If not specified, the current database is used.

Optional - A Reference to a child database. If not specified, the current database is used.

Optional - A Reference to a child database. If not specified, the current database is used.

Returns

A Reference to a class (now, collection) with the specified name, in the specified child database (or the current database if database is not specified).

Examples

  1. The following query gets a Reference to the class (now, collection) named "spells" within the current database:

    try
    {
        Value result = await client.Query(
            Class("spells")
        );
        Console.WriteLine(result);
    }
    catch (Exception e)
    {
        Console.WriteLine($"ERROR: {e.Message}");
    }
    RefV(id = "spells", collection = RefV(id = "collections"))
    result, err := client.Query(
    	f.Class("spells"))
    
    if err != nil {
    	fmt.Fprintln(os.Stderr, err)
    } else {
    	fmt.Println(result)
    }
    {spells 0xc000090360 0xc000090360 <nil>}
    System.out.println(
        client.query(
            Class("spells")
        ).get());
    ref(id = "spells", collection = ref(id = "collections"))
    client.query(
      q.Class('spells')
    )
    .then((ret) => console.log(ret))
    .catch((err) => console.error('Error: %s', err))
    Collection("spells")
    result = client.query(
        q.class_("spells")
    )
    print(result)
    Ref(id=spells, collection=Ref(id=collections))
    try {
      println(Await.result(
        client.query(Class("spells")),
        5.seconds
      ))
    } catch {
      case unknown: Throwable => println("Error: " + unknown.getMessage())
    }
    ref(id = "spells", collection = ref(id = "collections"))
    Class('spells')
    Collection("spells")
  2. The following query gets a Reference to the class (now, collection) named "spells" within a child database named "child_db":

    try
    {
        Value result = await client.Query(
            Class("spells", Database("child_db"))
        );
        Console.WriteLine(result);
    }
    catch (Exception e)
    {
        Console.WriteLine($"ERROR: {e.Message}");
    }
    RefV(id = "spells", collection = RefV(id = "collections"), database = RefV(id = "child_db", collection = RefV(id = "databases")))
    result, err := client.Query(
    	f.ScopedClass("spells", f.Database("child_db")))
    
    if err != nil {
    	fmt.Fprintln(os.Stderr, err)
    } else {
    	fmt.Println(result)
    }
    {spells 0xc0000902d0 0xc0000902d0 0xc000090330}
    System.out.println(
        client.query(
            Class("spells", Database("child_db"))
        ).get());
    ref(id = "spells", collection = ref(id = "collections"), database = ref(id = "child_db", collection = ref(id = "databases")))
    client.query(
      q.Class('spells', q.Database('child_db'))
    )
    .then((ret) => console.log(ret))
    .catch((err) => console.error('Error: %s', err))
    Collection("spells", Database("child_db"))
    result = client.query(
        q.class_("spells", q.database("child_db"))
    )
    print(result)
    Ref(id=spells, collection=Ref(id=collections), database=Ref(id=child_db, collection=Ref(id=databases)))
    try {
      println(Await.result(
        client.query(Class("spells", Database("child_db"))),
        5.seconds
      ))
    } catch {
      case unknown: Throwable => println("Error: " + unknown.getMessage())
    }
    ref(id = "spells", collection = ref(id = "collections"), database = ref(id = "child_db", collection = ref(id = "databases")))
    Class('spells', Database('child_db'))
    Collection("spells", Database("child_db"))

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