PurchaseFlow.java

/*
 * Copyright © 2014 Cask Data, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package co.cask.cdap.examples.purchase;

import co.cask.cdap.api.flow.AbstractFlow;

/**
 * This is a simple Flow that consumes purchase events from a Stream and stores Purchase objects in datastore.
 * It has only two Flowlets: one consumes events from the Stream and converts them into Purchase objects,
 * the other consumes these objects and stores them in a DataSet.
 */
public class PurchaseFlow extends AbstractFlow {

  @Override
  protected void configure() {
    setName("PurchaseFlow");
    setDescription("Reads user and purchase information and stores in dataset");
    addFlowlet("reader", new PurchaseStreamReader());
    addFlowlet("collector", new PurchaseStore());
    connectStream("purchaseStream", "reader");
    connect("reader", "collector");
  }
}