encoders

Value Members

1. object ExpressionEncoder extends Serializable

   

   A factory for constructing encoders that convert objects and primitives to and from the internal row format using catalyst expressions and code generation.

   A factory for constructing encoders that convert objects and primitives to and from the internal row format using catalyst expressions and code generation. By default, the expressions used to retrieve values from an input row when producing an object will be created as follows:

   • Classes will have their sub fields extracted by name using UnresolvedAttribute expressions and UnresolvedExtractValue expressions.
   • Tuples will have their subfields extracted by position using BoundReference expressions.
   • Primitives will have their values extracted from the first ordinal with a schema that defaults to the name value.

2. object OuterScopes

   

3. object RowEncoder

   

   A factory for constructing encoders that convert external row to/from the Spark SQL internal binary representation.