Class: Aws::S3Tables::Types::MigrationPolicies

Inherits:

Struct

Object
Struct
Aws::S3Tables::Types::MigrationPolicies

show all

Defined in:: gems/aws-sdk-s3tables/lib/aws-sdk-s3tables/types.rb

Overview

The policies for source data that doesn't fit the destination schema.

Constant Summary collapse

SENSITIVE =

[]

Instance Attribute Summary collapse

#incompatible_values_policy ⇒ String
The migration policy for a source value that the destination column's type can't hold.
#unmatched_source_fields_policy ⇒ String
The migration policy for a source field that has no matching column in the destination schema.

Instance Attribute Details

#incompatible_values_policy ⇒ `String`

The migration policy for a source value that the destination column's type can't hold. Valid values:

fail - Fails the migration. This is the default.
setNull - Writes null for a value that the destination column's type can't hold. If a column's type in a source object is incompatible with the destination column's type, the column is null for that whole object.

A required column, or a type that migration doesn't support, fails the migration under either value.

Returns:

(String)

# File 'gems/aws-sdk-s3tables/lib/aws-sdk-s3tables/types.rb', line 2385

class MigrationPolicies < Struct.new(
  :unmatched_source_fields_policy,
  :incompatible_values_policy)
  SENSITIVE = []
  include Aws::Structure
end

#unmatched_source_fields_policy ⇒ `String`

The migration policy for a source field that has no matching column in the destination schema. Valid values:

fail - Fails the migration. This is the default.
drop - Leaves source columns that the destination schema doesn't have out of the destination table, and doesn't migrate source objects outside the Amazon Web Services Glue table's partition locations.

A destination schema that leaves out a partition column or a field of a struct column fails the migration under either value.