org.apache.beam.sdk.extensions.python.transforms

Class DataframeTransform

java.lang.Object

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

org.apache.beam.sdk.extensions.python.transforms.DataframeTransform

All Implemented Interfaces:

java.io.Serializable, org.apache.beam.sdk.transforms.display.HasDisplayData

public class DataframeTransform
extends org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row>,org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row>>

Wrapper for invoking external Python DataframeTransform.

See Also:

Serialized Form

Field Summary

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

annotations, displayData, name, resourceHints

Method Summary

Modifier and Type	Method and Description
org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row>	expand(org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row> input)
static DataframeTransform	of(java.lang.String func) Instantiates a multi-language wrapper for a Python DataframeTransform with a given lambda function.
DataframeTransform	withExpansionService(java.lang.String expansionService) Sets an expansion service endpoint for DataframeTransform.
DataframeTransform	withIndexes() Sets include_indexes option for DataframeTransform.

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

addAnnotation, compose, compose, getAdditionalInputs, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setDisplayData, setResourceHints, toString, validate, validate

Methods inherited from class java.lang.Object

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

Method Detail

of

public static DataframeTransform of(java.lang.String func)

Instantiates a multi-language wrapper for a Python DataframeTransform with a given lambda function.

Parameters:

func - A Python lambda function that accepts Pandas dataframe object.

Returns:

A DataframeTransform for the given lambda function.

withIndexes

public DataframeTransform withIndexes()

Sets include_indexes option for DataframeTransform.

Returns:

A DataframeTransform with include_indexes option enabled.

withExpansionService

public DataframeTransform withExpansionService(java.lang.String expansionService)

Sets an expansion service endpoint for DataframeTransform.

Parameters:

expansionService - A URL for a Python expansion service.

Returns:

A DataframeTransform for the given expansion service endpoint.

expand

public org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row> expand(org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row> input)

Specified by:

expand in class org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row>,org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row>>