org.apache.beam.sdk.io.gcp.bigtable

Class BeamRowToBigtableMutation

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<Row>,PCollection<KV<com.google.protobuf.ByteString,java.lang.Iterable<com.google.bigtable.v2.Mutation>>>>

org.apache.beam.sdk.io.gcp.bigtable.BeamRowToBigtableMutation

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

public class BeamRowToBigtableMutation
extends PTransform<PCollection<Row>,PCollection<KV<com.google.protobuf.ByteString,java.lang.Iterable<com.google.bigtable.v2.Mutation>>>>
implements java.io.Serializable

Bigtable reference: .

Requires a flat schema and a mapping which column family corresponds to which column.

Row represents Bigtable Mutation in the following way:

Mapped Beam Row:

BEAM_ROW: ROW

VALUE: Beam Schema type except for ARRAY, DECIMAL, ITERABLE, MAP, ROW

Mapped Mutation:

mutation: key, setCell[]

setCell: familyName, columnQualifier, ROW[columnQualifier] - familyName comes from the column: family mapping

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BeamRowToBigtableMutation.ToBigtableRowFn

Field Summary

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

name, resourceHints

Constructor Summary

Constructors

Constructor and Description
BeamRowToBigtableMutation(java.util.Map<java.lang.String,java.util.Set<java.lang.String>> familyColumnMapping)

Method Summary

Modifier and Type	Method and Description
PCollection<KV<com.google.protobuf.ByteString,java.lang.Iterable<com.google.bigtable.v2.Mutation>>>	expand(PCollection<Row> input) Override this method to specify how this PTransform should be expanded on the given InputT.

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

Constructor Detail

BeamRowToBigtableMutation

public BeamRowToBigtableMutation(java.util.Map<java.lang.String,java.util.Set<java.lang.String>> familyColumnMapping)

Method Detail

expand

public PCollection<KV<com.google.protobuf.ByteString,java.lang.Iterable<com.google.bigtable.v2.Mutation>>> expand(PCollection<Row> 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<Row>,PCollection<KV<com.google.protobuf.ByteString,java.lang.Iterable<com.google.bigtable.v2.Mutation>>>>