org.apache.beam.sdk.io.gcp.spanner

Class SpannerIO.Read

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PBegin,PCollection<com.google.cloud.spanner.Struct>>

org.apache.beam.sdk.io.gcp.spanner.SpannerIO.Read

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

Enclosing class:

SpannerIO

@Experimental(value=SOURCE_SINK)
public abstract static class SpannerIO.Read
extends PTransform<PBegin,PCollection<com.google.cloud.spanner.Struct>>

A PTransform that reads data from Google Cloud Spanner.

See Also:

SpannerIO, Serialized Form

Field Summary

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

name

Constructor Summary

Constructors

Constructor and Description
Read()

Method Summary

Modifier and Type	Method and Description
PCollection<com.google.cloud.spanner.Struct>	expand(PBegin input) Override this method to specify how this PTransform should be expanded on the given InputT.
void	validate(PipelineOptions options) Called before running the Pipeline to verify this transform is fully and correctly specified.
SpannerIO.Read	withColumns(java.util.List<java.lang.String> columns)
SpannerIO.Read	withColumns(java.lang.String... columns)
SpannerIO.Read	withDatabaseId(java.lang.String databaseId) Specifies the Cloud Spanner database.
SpannerIO.Read	withDatabaseId(ValueProvider<java.lang.String> databaseId) Specifies the Cloud Spanner database.
SpannerIO.Read	withIndex(java.lang.String index)
SpannerIO.Read	withInstanceId(java.lang.String instanceId) Specifies the Cloud Spanner instance.
SpannerIO.Read	withInstanceId(ValueProvider<java.lang.String> instanceId) Specifies the Cloud Spanner instance.
SpannerIO.Read	withKeySet(com.google.cloud.spanner.KeySet keySet)
SpannerIO.Read	withProjectId(java.lang.String projectId) Specifies the Cloud Spanner project.
SpannerIO.Read	withProjectId(ValueProvider<java.lang.String> projectId) Specifies the Cloud Spanner project.
SpannerIO.Read	withQuery(com.google.cloud.spanner.Statement statement)
SpannerIO.Read	withQuery(java.lang.String sql)
SpannerIO.Read	withSpannerConfig(SpannerConfig spannerConfig) Specifies the Cloud Spanner configuration.
SpannerIO.Read	withTable(java.lang.String table)
SpannerIO.Read	withTimestamp(com.google.cloud.Timestamp timestamp)
SpannerIO.Read	withTimestampBound(com.google.cloud.spanner.TimestampBound timestampBound)
SpannerIO.Read	withTransaction(PCollectionView<Transaction> transaction)

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

getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, populateDisplayData, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Read

public Read()

Method Detail

withSpannerConfig

public SpannerIO.Read withSpannerConfig(SpannerConfig spannerConfig)

Specifies the Cloud Spanner configuration.

withProjectId

public SpannerIO.Read withProjectId(java.lang.String projectId)

Specifies the Cloud Spanner project.

withProjectId

public SpannerIO.Read withProjectId(ValueProvider<java.lang.String> projectId)

Specifies the Cloud Spanner project.

withInstanceId

public SpannerIO.Read withInstanceId(java.lang.String instanceId)

Specifies the Cloud Spanner instance.

withInstanceId

public SpannerIO.Read withInstanceId(ValueProvider<java.lang.String> instanceId)

Specifies the Cloud Spanner instance.

withDatabaseId

public SpannerIO.Read withDatabaseId(java.lang.String databaseId)

Specifies the Cloud Spanner database.

withDatabaseId

public SpannerIO.Read withDatabaseId(ValueProvider<java.lang.String> databaseId)

Specifies the Cloud Spanner database.

withTransaction

public SpannerIO.Read withTransaction(PCollectionView<Transaction> transaction)

withTimestamp

public SpannerIO.Read withTimestamp(com.google.cloud.Timestamp timestamp)

withTimestampBound

public SpannerIO.Read withTimestampBound(com.google.cloud.spanner.TimestampBound timestampBound)

withTable

public SpannerIO.Read withTable(java.lang.String table)

withColumns

public SpannerIO.Read withColumns(java.lang.String... columns)

withColumns

public SpannerIO.Read withColumns(java.util.List<java.lang.String> columns)

withQuery

public SpannerIO.Read withQuery(com.google.cloud.spanner.Statement statement)

withQuery

public SpannerIO.Read withQuery(java.lang.String sql)

withKeySet

public SpannerIO.Read withKeySet(com.google.cloud.spanner.KeySet keySet)

withIndex

public SpannerIO.Read withIndex(java.lang.String index)

validate

public void validate(PipelineOptions options)

Description copied from class: PTransform

Called before running the Pipeline to verify this transform is fully and correctly specified.

By default, does nothing.

Overrides:

validate in class PTransform<PBegin,PCollection<com.google.cloud.spanner.Struct>>

expand

public PCollection<com.google.cloud.spanner.Struct> 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<com.google.cloud.spanner.Struct>>