crud | 易学教程

Why are CRUD operations so bad in a SOA design?

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问题 I have just finished reading an article on MSDN by John Evdemon. He bashes the CRUD interfaces and calls it an anti-pattern. While I agree that having ANYTHING stateful is difficult and Current and MoveNext are bad ideas I don't agree that CRUD as in Create Read Update and Delete are bad. If I have a car service and I want to let clients be able to do the basics, as in Create a car, get a cars details, update a cars details or delete a car then how are they meant to be able to do those things

SAPUI5 - Batch Operations - how to do it right?

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问题 I got multiple EntititySets which I want to update in my SAP Backend, therefore I fetch my data (payload) as JSON and put it in a request (its successfully in the node "data"): Code: var oTreeJSON = oTreeTable.getModel().getProperty("/root"); var oModel = sap.ui.getCore().getModel(); var batchChanges = []; for (var i = 0; i < oTreeAll.length; i++) { batchChanges.push(oModel.createBatchOperation("/sap/opu/odata/sap/MY_SERVICE/?$batch", "POST", oTreeAll[i])); } oModel.submitBatch(); My Request

PHP and Microsoft Access database - Connection and CRUD

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I have no experience with access. How to do update/insert/delete/select statement with and without $rs = new com("ADODB.RecordSet"); ? PDO If you want to interface with an MS Access database using PHP, PDO is available for you. <?php try { $pdo = new PDO("odbc:Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\accounts.mdb;Uid=Admin"); } catch (PDOException $e) { echo $e->getMessage(); } When using PDO, due to the unified interface for DB operations, you have the opportunity to make your app more portable across various RDBMs systems. All you have to do is to provide the connection string to the

Create programmatically a product using CRUD methods in Woocommerce 3

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问题 I'd like to create a new Woocommerce product programmatically with PHP code and I have tried it with the Woocommerce 3 CRUD methods: //Woocommerce CRUD $objProduct = new WC_Product_Simple(); $objProduct->set_name('My Product 1'); //Set product name. $objProduct->set_status('publish'); //Set product status. //$objProduct->set_featured(FALSE); //Set if the product is featured. | bool $objProduct->set_catalog_visibility('visible'); //Set catalog visibility. | string $visibility Options: 'hidden'

Advanced customization of CRUD forms and controllers in Play

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问题 What I'm looking for is the ability to quickly (DRY!) generate forms for given models, but in a less-controlled way than using CRUD forms/models; for instance, by being able to use crud tags without the full crud controllers/routes, or by strongly customizing them. Let me explain through an example. I have a model A than links (ManyToOne) to 2 models, B and C class public A extends Model { public String name; @ManyToOne public A a; @ManyToOne public B b; } I would like to be able to write the

Cleanly updating a hierarchy in Entity Framework

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问题 I'm submitting a form for a StoredProcedureReport , which has many StoredProcedureParameters . Create works fine, but trying to update has left me asking whether or not Microsoft can seriously be serious. I come from a Rails background where @report.update_attributes(params[:report]) will know exactly what to do with whatever association data it finds within. From what I can tell, the .NET equivalent of this is TryUpdateModel , which looked promising. At first. So I tried it with some params

Single DAO & generic CRUD methods (JPA/Hibernate + Spring)

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Following my previous question, DAO and Service layers (JPA/Hibernate + Spring) , I decided to use just a single DAO for my data layer (at least at the beginning) in an application using JPA/Hibernate, Spring and Wicket. The use of generic CRUD methods was proposed, but I'm not very sure how to implement this using JPA. Could you please give me an example or share a link regarding this? Here is an example interface: public interface GenericDao<T, PK extends Serializable> { T create(T t); T read(PK id); T update(T t); void delete(T t); } And an implementation: public class GenericDaoJpaImpl<T,

A RESTful persistence solution usable with backbone.js… in PHP?

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问题 I'll preface this with saying that I'm a crappy programmer, I'm sure that what I want to do could be done in 10 lines of node or Rails or something else, but PHP is what I have available. So, I'm hoping to find a simple PHP library which wraps the database calls in an API that looks similar to the RESTful model. I've had little success trying to find such a thing -- searching for PHP CRUD or PHP REST turns up several zillion pages, and I've no idea how to filter through them. I'm really

Which HTTP methods match up to which CRUD methods?

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In RESTful style programming, we should use HTTP methods as our building blocks. I'm a little confused though which methods match up to the classic CRUD methods. GET/Read and DELETE/Delete are obvious enough. However, what is the difference between PUT/POST? Do they match one to one with Create and Update? Create = PUT with a new URI POST to a base URI returning a newly created URI Read = GET Update = PUT with an existing URI Delete = DELETE PUT can map to both Create and Update depending on the existence of the URI used with the PUT. POST maps to Create. Correction: POST can also map to

How to perform update operations on columns of type JSONB in Postgres 9.4

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Looking through the documentation for the Postgres 9.4 datatype JSONB, it is not immediately obvious to me how to do updates on JSONB columns. Documentation for JSONB types and functions: http://www.postgresql.org/docs/9.4/static/functions-json.html http://www.postgresql.org/docs/9.4/static/datatype-json.html As an examples, I have this basic table structure: CREATE TABLE test(id serial, data jsonb); Inserting is easy, as in: INSERT INTO test(data) values ('{"name": "my-name", "tags": ["tag1", "tag2"]}'); Now, how would I update the 'data' column? This is invalid syntax: UPDATE test SET data->