co.cask.cdap.examples.helloworld

Class HelloWorld

java.lang.Object

co.cask.cdap.internal.api.AbstractProgramDatasetConfigurable

co.cask.cdap.internal.api.AbstractPluginConfigurable<ApplicationConfigurer>

co.cask.cdap.api.app.AbstractApplication

co.cask.cdap.examples.helloworld.HelloWorld

All Implemented Interfaces:

Application

public class HelloWorld
extends AbstractApplication

This is a simple HelloWorld example that uses one stream, one dataset, one flow and one service.

• A stream to send names to.
• A flow with a single flowlet that reads the stream and stores each name in a KeyValueTable
• A service that reads the name from the KeyValueTable and responds with 'Hello [Name]!'

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HelloWorld.Greeting A Service that creates a greeting using a user's name.
static class	HelloWorld.GreetingHandler Greeting Service handler.
static class	HelloWorld.NameSaver Sample Flowlet.
static class	HelloWorld.WhoFlow Sample Flow.

Constructor Summary

Constructors

Constructor and Description
HelloWorld()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure()

Methods inherited from class co.cask.cdap.api.app.AbstractApplication

addFlow, addMapReduce, addService, addService, addSpark, addWorker, addWorkflow, configure, getConfig, getConfigurer, getContext, scheduleWorkflow, scheduleWorkflow, setDescription, setName

Methods inherited from class co.cask.cdap.internal.api.AbstractPluginConfigurable

usePlugin, usePlugin, usePluginClass, usePluginClass

Methods inherited from class co.cask.cdap.internal.api.AbstractProgramDatasetConfigurable

addDatasetModule, addDatasetType, addStream, addStream, createDataset, createDataset, createDataset, createDataset

Methods inherited from class java.lang.Object

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

Constructor Detail

HelloWorld

public HelloWorld()

Method Detail

configure

public void configure()

Specified by:

configure in class AbstractApplication