org.apache.beam.sdk.io.mongodb

Class MongoDbGridFSIO.Read<T>

java.lang.Object

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

org.apache.beam.sdk.io.mongodb.MongoDbGridFSIO.Read<T>

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

Enclosing class:

MongoDbGridFSIO

public abstract static class MongoDbGridFSIO.Read<T>
extends PTransform<PBegin,PCollection<T>>

A PTransform to read data from MongoDB GridFS.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	MongoDbGridFSIO.Read.BoundedGridFSSource A BoundedSource for MongoDB GridFS.

Field Summary

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

name, resourceHints

Constructor Summary

Constructors

Constructor and Description
Read()

Method Summary

Modifier and Type	Method and Description
PCollection<T>	expand(PBegin input) Override this method to specify how this PTransform should be expanded on the given InputT.
void	populateDisplayData(DisplayData.Builder builder) Register display data for the given transform or component.
MongoDbGridFSIO.Read<T>	withBucket(java.lang.String bucket)
MongoDbGridFSIO.Read<T>	withCoder(Coder<T> coder)
MongoDbGridFSIO.Read<T>	withDatabase(java.lang.String database)
MongoDbGridFSIO.Read<T>	withFilter(java.lang.String filter)
<X> MongoDbGridFSIO.Read<X>	withParser(MongoDbGridFSIO.Parser<X> parser)
MongoDbGridFSIO.Read<T>	withSkew(Duration skew)
MongoDbGridFSIO.Read<T>	withUri(java.lang.String uri)

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Read

public Read()

Method Detail

withUri

public MongoDbGridFSIO.Read<T> withUri(java.lang.String uri)

withDatabase

public MongoDbGridFSIO.Read<T> withDatabase(java.lang.String database)

withBucket

public MongoDbGridFSIO.Read<T> withBucket(java.lang.String bucket)

withParser

public <X> MongoDbGridFSIO.Read<X> withParser(MongoDbGridFSIO.Parser<X> parser)

withCoder

public MongoDbGridFSIO.Read<T> withCoder(Coder<T> coder)

withSkew

public MongoDbGridFSIO.Read<T> withSkew(Duration skew)

withFilter

public MongoDbGridFSIO.Read<T> withFilter(java.lang.String filter)

populateDisplayData

public void populateDisplayData(DisplayData.Builder builder)

Description copied from class: PTransform

Register display data for the given transform or component.

populateDisplayData(DisplayData.Builder) is invoked by Pipeline runners to collect display data via DisplayData.from(HasDisplayData). Implementations may call super.populateDisplayData(builder) in order to register display data in the current namespace, but should otherwise use subcomponent.populateDisplayData(builder) to use the namespace of the subcomponent.

By default, does not register any display data. Implementors may override this method to provide their own display data.

Specified by:

populateDisplayData in interface HasDisplayData

Overrides:

populateDisplayData in class PTransform<PBegin,PCollection<T>>

Parameters:

builder - The builder to populate with display data.

See Also:

HasDisplayData

expand

public PCollection<T> expand(PBegin 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<PBegin,PCollection<T>>