crud

问题 My web application is a CRUD web application based on JSF 2.0 / JPA using Java EE 5 and JDK 1.6. Running on Glassfish 3.1. The IDE is Netbeans 7.0. (I do not use EJB, nor CDI). THE PROBLEM What I can achieve now is perform CRUD on my entities. Which is fine. For each entity I have: List.xhtml (LIsting all Datamodel items for that entity in datatable) Create.xhtml (A form to create a new item) View.xhtml (a form to view an item) Edit.xhtml (a form to edit an item) Structure entities package:

问题 I'm utilizing KevinDockx's JsonPatch extension for Visual Studio. My project uses .NET Web API (not Core) and Angular (6) . .Net Web API doesn't support the JsonPatchDocument namespace, thus the need for KevinDock's JsonPatch extension. I'm reading through his documentation here: https://github.com/KevinDockx/JsonPatch/blob/master/README.md JsonPatch consists of two parts: On the client (consumer of the API) : the JsonPatchDocument / JsonPatchDocument class to build what's essentially a

问题 Wanna do the following: BootStrap { def init = {servletContext -> ........ MyDomainClass.metaClass.save = {-> delegate.extraSave() //////// how to call original save() here? } } ......... } P.S. MyDomainClass#extraSave is defined as public void extraSave(){.....} 回答1: First of all, Bootstrap.groovy may not be the best place to do this kind of metaprogramming. The problem with this approach is that the changes to the classes will be applied when the application starts, but you may lose these

问题 I'm trying to override the list() function of the CRUD module for one of my models. I found this on google groups which is essentially the issue i'm having. Basically I want to filter the list based on certian categories, I tried this: CONTROLLER public static void list(string category){ List<Duty> object = Duty.getByCategory(category); render(object); } MODEL public static List<Duty> getByCategory(String category){ List<Duty> result = Duty.find("select distinct d from Duty d join " + "d

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . Background A simple database with about 20 tables, sprinkled with unique constraints, primary keys, and foreign key relationships. This is a database for internal use only. Only two or three people will have direct access to the data. Only one of those people is qualified to be a DBA. The database was developed

问题 Wordpress ships with the wpdb class which handles CRUD operations. The two methods of this class that I'm interested in are the insert() (the C in CRUD) and update() (the U in CRUD). A problem arises when I want to insert a NULL into a mysql database column - the wpdb class escapes PHP null variables to empty strings. How can I tell Wordpress to use an actual MySQL NULL instead of a MySQL string? 回答1: If you want it to compatible you would have to SHOW COLUMN and determine ahead if NULL is

问题 Working on a business application using MVC structure and a Business Object / DAO architecture. For any normal business object, the CRUD functions are fairly straightforward. But what's the best way to handle a parent-child relationship like "Customer is a User"? I know that the following classes are involved: User, UserDAO, Customer, CustomerDAO The Customer class can inherit from the User just fine, but how do you best reflect this in the DAO CRUD functions? 回答1: Martin Fowler has

问题 I am new in the MongoDB world and now I am struggling of how can I delete, update element in a nested array field of a document. Here is my sample document: { "_id" : ObjectId("55f354533dd61e5004ca5208"), "Name" : "Hand made products for real!", "Description" : "Products all made by hand", "Products" : [ { "Identifier" : "170220151653", "Price" : 20.5, "Name" : "Leather bracelet", "Description" : "The bracelet was made by hand", "ImageUrl" : "https://encrypted-tbn1.gstatic.com/images?q=tbn

问题 I'm struggling with updating existing lecturer's data in database. Every lecturer has Name , AcademicDegree and Courses which are taught by him/her ( Courses==Lessons ). In fact there are more properties in class Lecturer but they are not relevant. For simplicity lets assume that POCO class is defined this way: // POCO class (Entity Framework Reverse Engineering Code First) public class Lecturer { public Lecturer() { this.Courses = new List<Course>(); } public int Id_Lecturer { get; set; } //

问题 In my SpringBoot applicatication I'm using CrudRepo. I have found a problem with return value: Required != Found GitHub: https://github.com/einhar/WebTaskManager/tree/findById-problem No matter about changing method return type from Task into Object -> IDE stopped show error, but then it could be problem due to validation of data type later on. Do you know how to fix it? Any hint? CrudRepo public interface TaskRepository extends CrudRepository<Task, Integer> {} Service @Service @Transactional