Triggering Update Event

To trigger an event, update an existing Order object in the Backendless database. This can be done with any Backendless SDK (Android, iOS, JS, .NET), REST API or Backendless Console:

Using Java MapCustom Class

HashMap<String, Object> orderObject = // retrieve an existing object

// update a property in the object
orderObject.put( "orderAmount", 1200 );

// now save the updated object
Backendless.Data.of( "Order" ).save( orderObject, new AsyncCallback<Map>()
{
  @Override
  public void handleResponse( Map updatedOrder )
  {
    Log.i( "MYAPP", "Object has been updated in the database - " + updatedOrder.get( "objectId" ) );
  }

  @Override
  public void handleFault( BackendlessFault fault )
  {
    Log.e( "Server reported an error " + fault.getDetail() );
  }
} );

Order class:

package com.company;

public class Order
{
  public String objectId;
  public String orderName;
  public Double orderAmount;
}

Updating an instance of Order and saving it in the database:

Order order = // retrieve an order from the database

// update an order property
order.orderAmount = 2150d;

// save the object in the database
Backendless.Data.of( Order.class ).save( order, new AsyncCallback<Order>()
{
  @Override
  public void handleResponse( Order updatedOrder )
  {
    Log.i( "MYAPP", "Order object has been updated in the database - " + updatedOrder.objectId );
  }

  @Override
  public void handleFault( BackendlessFault fault )
  {
    Log.e( "Server reported an error - " + fault.getDetail() );
  }
} );