Package org.apache.beam.sdk.schemas.transforms

Class AddFields.Inner<T>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<T>,PCollection<Row>>

org.apache.beam.sdk.schemas.transforms.AddFields.Inner<T>

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

Enclosing class:

AddFields

public static class AddFields.Inner<T>
extends PTransform<PCollection<T>,PCollection<Row>>

Inner PTransform for AddFields.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.beam.sdk.transforms.PTransform

name, resourceHints

Method Summary

Modifier and Type	Method	Description
PCollection<Row>	expand(PCollection<T> input)	Override this method to specify how this PTransform should be expanded on the given InputT.
AddFields.Inner<T>	field(java.lang.String fieldName, Schema.FieldType fieldType)	Add a new field of the specified type.
AddFields.Inner<T>	field(java.lang.String fieldName, Schema.FieldType fieldType, java.lang.Object defaultValue)	Add a new field of the specified type.

Methods inherited from class org.apache.beam.sdk.transforms.PTransform

compose, compose, getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setResourceHints, toString, validate, validate

Methods inherited from class java.lang.Object

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

Method Detail

field

public AddFields.Inner<T> field(java.lang.String fieldName,
                                Schema.FieldType fieldType)

Add a new field of the specified type. The new field will be nullable and will be filled in with null values.

field

public AddFields.Inner<T> field(java.lang.String fieldName,
                                Schema.FieldType fieldType,
                                java.lang.Object defaultValue)

Add a new field of the specified type. The new field will be filled in with the specified value.

expand

public PCollection<Row> expand(PCollection<T> input)

Description copied from class: PTransform

Override this method to specify how this PTransform should be expanded on the given InputT.

NOTE: This method should not be called directly. Instead apply the PTransform should be applied to the InputT using the apply method.

Composite transforms, which are defined in terms of other transforms, should return the output of one of the composed transforms. Non-composite transforms, which do not apply any transforms internally, should return a new unbound output and register evaluators (via backend-specific registration methods).

Specified by:

expand in class PTransform<PCollection<T>,PCollection<Row>>