如何將數據存儲在谷歌應用程序引擎

Question

我是新來的谷歌應用程序引擎，我正在閱讀此頁： https://developers.google.com/appengine/docs/java/datastore/queries

在這裏，他們解釋瞭如何從數據存儲中檢索數據：

// Get the Datastore Service 
    DatastoreService datastore = DatastoreServiceFactory.getDatastoreService(); 

     // The Query interface assembles a query 
Query q = new Query("Person"); 

    //Use CompositeFilter to set more than one filter 
    q.setFilter(CompositeFilterOperator.and(
new FilterPredicate("lastName", Query.FilterOperator.EQUAL, lastNameParam), 
new FilterPredicate("height", Query.FilterOperator.LESS_THAN, maxHeightParam))); 


    // PreparedQuery contains the methods for fetching query results 
    // from the Datastore 
    PreparedQuery pq = datastore.prepare(q); 

    for (Entity result : pq.asIterable()) { 
    String firstName = (String) result.getProperty("firstName"); 
    String lastName = (String) result.getProperty("lastName"); 
    Long height = (Long) result.getProperty("height"); 
    System.out.println(firstName + " " + lastName + ", " + height + " inches tall"); 
    } 

但如何保存這些數據，以及如何將這個firstName和LastName保存在DataStore中？

感謝

Answer 1

你有沒有覺得讀一些文檔的其他部分，比如一個只是一個that explains exactly what to do上面鏈接？