UseCase_RideSharing_JavaSDK_import_data.java

import io.prediction.Client;
import io.prediction.UserActionItemRequestBuilder;
import io.prediction.CreateItemRequestBuilder;

// In the beginning of your application, you need to instantiate the PredictionIO client object.
// You need this client object to import data into PredictionIO and retrieve prediction results. 
// Add this line to the place where you do initialization:
Client client = new Client("your app key");

// Then add the following lines to your codes which handle the corresponding application logic:

// When a new user registers:
try {
  client.createUser("new user id");
} catch (Exception e) {
  handleException(e);
}

// When a new driver registers or an existing driver changes location:
try {
  String[] itypes = {"drivers"}; // NOTE: the item itype is "drivers"
  CreateItemRequestBuilder builder = client.getCreateItemRequestBuilder("new or existing driver id", itypes)
    .latitude(latitude) // current latitude of the driver. eg latitude = 37.7881
    .longitude(longitude); // current longitude of the driver. eg longitude = 122.4075
  client.createItem(builder);
} catch (Exception e) {
  handleException(e);
}

// When a user logs in:
client.identify("the logged-in user ID");


// When the logged-in user views a driver:
try {
  client.userActionItem("view", "the viewed driver id");
} catch (Exception e) {
  handleException(e);
}

// When the logged-in user rates the driver after the ride:
// the variable rating stores the rating value (from 1 to 5)
try {
  UserActionItemRequestBuilder builder = client.getUserActionItemRequestBuilder("rate", "the rated driver id")
    .rate(rating);
  client.userActionItem(builder);
} catch (Exception e) {
  handleException(e);
}

// When the logged-in user pays the driver after the ride:
// Use built-in action "conversion" to represent the "pay" action
try {
  client.userActionItem("conversion", "the driver id");
} catch (Exception e) {
  handleException(e);
}