com.google.cloud.dataflow.examples.complete

Class TfIdf

java.lang.Object

com.google.cloud.dataflow.examples.complete.TfIdf

public class TfIdf
extends Object

An example that computes a basic TF-IDF search table for a directory or GCS prefix.

Concepts: joining data; side inputs; logging

To execute this pipeline locally, specify general pipeline configuration:

   --project=YOUR_PROJECT_ID
 

and a local output file or output prefix on GCS:

   --output=[YOUR_LOCAL_FILE | gs://YOUR_OUTPUT_PREFIX]
 

To execute this pipeline using the Dataflow service, specify pipeline configuration:

   --project=YOUR_PROJECT_ID
   --stagingLocation=gs://YOUR_STAGING_DIRECTORY
   --runner=BlockingDataflowPipelineRunner
 and an output prefix on GCS:
   --output=gs://YOUR_OUTPUT_PREFIX
 

The default input is gs://dataflow-samples/shakespeare/ and can be overridden with --input.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TfIdf.ComputeTfIdf A transform containing a basic TF-IDF pipeline.
static class	TfIdf.ReadDocuments Reads the documents at the provided uris and returns all lines from the documents tagged with which document they are from.
static class	TfIdf.WriteTfIdf A PTransform to write, in CSV format, a mapping from term and URI to score.

Constructor Summary

Constructors

Constructor and Description
TfIdf()

Method Summary

Modifier and Type	Method and Description
static Set<URI>	listInputDocuments(com.google.cloud.dataflow.examples.complete.TfIdf.Options options) Lists documents contained beneath the options.input prefix/directory.
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

TfIdf

public TfIdf()

Method Detail

listInputDocuments

public static Set<URI> listInputDocuments(com.google.cloud.dataflow.examples.complete.TfIdf.Options options)
                                   throws URISyntaxException,
                                          IOException

Lists documents contained beneath the options.input prefix/directory.

Throws:

URISyntaxException

IOException

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception