SMP3.0学习笔记之五 使用OData Native SDK修改数据

作者：穿行印象

 http://blog.sina.com.cn/s/blog_7a9486880101qa3s.html

获取到航班信息之后，如果有满意的航班就需要预定了。于是增加如下界面进行航班的预定：

点击“Book”按钮后会使用OData SDK创建POST操作所需要的对象，然后向SMP暴露的OData服务发起POST操作：

  public void Book(View v)  
 {  
  this.bookFlight();  
 } 
 private void bookFlight()
 {
  IODataEntry newBookingEntry = new ODataEntry();
  newBookingEntry.putPropertyValue(ConnectivityConstants.AIRLINE_ID, mAirlineID);
  newBookingEntry.putPropertyValue(ConnectivityConstants.CONNECTION_ID, mConnectionID);
  newBookingEntry.putPropertyValue(ConnectivityConstants.FLIGHT_DATE, Utils.formatDate(mFlightDate, mApplication.useJSONFormat()));
  newBookingEntry.putPropertyValue(ConnectivityConstants.CUSTOMER_ID, ConnectivityConstants.DEFAULT_CUSTOMER_ID);
  newBookingEntry.putPropertyValue(ConnectivityConstants.AGENCY_ID, ConnectivityConstants.DEFAUL_AGENCY_ID);
  
  newBookingEntry.putPropertyValue(ConnectivityConstants.BOOKING_DATE, Utils.formatDate(new Date(), mApplication.useJSONFormat()));
  
  try
  {
   IRequest request = RequestBuilderHelper.getInstance().buildPOSTRequest(this, ConnectivityConstants.BOOKING_COLLECTION, newBookingEntry, BOOKING_REQUEST_TAG);
   mApplication.getRequestManager().makeRequest(request);
  }
  catch(Exception e)
  {
   e.printStackTrace();
  }  
 }

一旦调用成功，会触发onSuccess方法：

 

  @Override
 public void onSuccess(IRequest aRequest, IResponse aResponse) {
  final IResponse response = aResponse;
  mMessages = new ArrayList();
  mCurrentRequestTag = aRequest.getRequestTAG();
  if (aRequest.getRequestTAG().equalsIgnoreCase(BOOKING_REQUEST_TAG)) {
   try {

    HttpEntity responseEntity = response.getEntity();
    String responseString = EntityUtils.toString(responseEntity);

    Parser parser = mApplication.getParser();
    mBookingEntries = parser.parseODataEntries(responseString, ConnectivityConstants.FLIGHT_COLLECTION, mApplication.getODataSchema());
    showText();
   } catch (Exception e) {
    e.printStackTrace();
   }
  }  
 }

onSuccess该方法的最后会给出会调用showText()方法，给用户提示预定机票成功，如下图所示：

 

showText()方法代码：
  private void showText()
  {
   Message msg = new Message();    
   mHandler.sendMessage(msg);
  }

    private Handler mHandler = new Handler()
    { 
      public void handleMessage(Message msg)
      { 
         if (mBookingEntries != null)
         {
             String bookingID = mBookingEntries.get(0).getPropertyValu(ConnectivityConstants.BOOKING_ID);
         
              Toast.makeText(getApplicationContext(), "Book Flight Successfully, BookingID:" + bookingID, Toast.LENGTH_LONG).show();
          }
      }; 
    };