Package org.apache.beam.sdk.io.gcp.healthcare

Class DicomIO.ReadStudyMetadata

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<String>,DicomIO.ReadStudyMetadata.Result>

org.apache.beam.sdk.io.gcp.healthcare.DicomIO.ReadStudyMetadata

All Implemented Interfaces:

Serializable, HasDisplayData

Enclosing class:

DicomIO

public static class DicomIO.ReadStudyMetadata
extends PTransform<PCollection<String>,DicomIO.ReadStudyMetadata.Result>

This class makes a call to the retrieve metadata endpoint (https://cloud.google.com/healthcare/docs/how-tos/dicomweb#retrieving_metadata). It defines a function that can be used to process a Pubsub message from a DICOM store, read the DICOM study path and get the metadata of the specified study. You can learn how to configure PubSub messages to be published when an instance is stored by following: https://cloud.google.com/healthcare/docs/how-tos/pubsub. The connector will output a DicomIO.ReadStudyMetadata.Result which will contain metadata of the study encoded as a json array.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DicomIO.ReadStudyMetadata.Result

Field Summary

Fields

Modifier and Type	Field	Description
static final TupleTag<String>	ERROR_MESSAGE	TupleTag for any error response.
static final TupleTag<String>	METADATA	TupleTag for the main output.

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

annotations, displayData, name, resourceHints

Method Summary

Modifier and Type	Method	Description
DicomIO.ReadStudyMetadata.Result	expand(PCollection<String> 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

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

Field Details

METADATA

public static final TupleTag<String> METADATA

TupleTag for the main output.

ERROR_MESSAGE

public static final TupleTag<String> ERROR_MESSAGE

TupleTag for any error response.

Method Details

expand

public DicomIO.ReadStudyMetadata.Result expand(PCollection<String> 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<String>,DicomIO.ReadStudyMetadata.Result>