org.apache.beam.sdk.schemas.transforms

Class Cast.Narrowing

java.lang.Object

org.apache.beam.sdk.schemas.transforms.Cast.Narrowing

All Implemented Interfaces:

java.io.Serializable, Cast.Validator

Enclosing class:

Cast<T>

public static class Cast.Narrowing
extends java.lang.Object
implements Cast.Validator

Narrowing changes type without guarantee to preserve data.

Standard narrowing conversions:

• any conversions of Cast.Widening
• conversions the opposite to Cast.Widening

Row narrowing

• wider schema to schema with a subset of fields
• non-nullable fields to nullable fields
• nullable fields to non-nullable fields

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Narrowing()

Method Summary

Modifier and Type	Method and Description
java.util.List<Cast.CompatibilityError>	apply(Schema input, Schema output)
static Cast.Narrowing	of()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Narrowing

public Narrowing()

Method Detail

of

public static Cast.Narrowing of()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

apply

public java.util.List<Cast.CompatibilityError> apply(Schema input,
                                                     Schema output)

Specified by:

apply in interface Cast.Validator