Read Catalogue
1.dao[data Access Object] data Access objects
2.dto[data Transfer Object] data transfer objects
3.po[persistant Object] Persistence layer objects
4.bo[bussiness Object] Business objects
5.vo[value Object] Value objects
4.pojo[plain ordiary Java Object] Simple Java objects
Admire the ability to be complex and difficult to understand the technology, abstract into simple and easy to understand things peopl
What does vo, PO, BO, DAO, pojo mean in java?Recently in the project, met vo, my God ... Then learn to remember it together.Let's start with a simple explanation:the o/r Mapping is an abbreviation for the object relational Mapping. Simply put, the object is bound to the relational database, and the object is used to represent the relational Data.Java WEB three-tier Architecture We need to be skilled at it.VO: Value ObjectCreated with the new keyword,
object-oriented approach to deal with the problem.For example, if we have 100 fields in a table, then the corresponding PO has 100 attributes. However, as long as we display 10 fields on the interface, the client uses WebService to fetch the data, and there is no need to pass the entire PO object to the client, we can pass the result to the client with a DTO with only these 10 attributes. This also does not expose the service-side table structure. After reaching the client, if the object is use
the number of distributed calls, thereby improving the performance of distributed calls and reducing network load, but here I refer to the data transfer objects between the presentation layer and the service layer.VO (View object) value ObjectA View object, used for the presentation layer, that encapsulates all the data for a specified page (or component).BO (business object) service objectFrom the business model perspective, see the domain objects i
network load, but here I refer to the data transfer objects between the presentation layer and the service layer.VO (View object) Value ObjectA View object, used for the presentation layer, that encapsulates all the data for a specified page (or component).BO (business object) service objectFrom the business model perspective, see the domain objects in the UML component Domain model. A Java object that encapsulates the business logic, by invoking the
August 9, the famous Internet veteran Zhang Yingjun on his personal blog, said that its operating Bo Yi Network (anyp.cn) because some personal sites have violated content, by the higher authorities closed.
The news is really shocking!
In shock, there are four questions?
The question is, "because of some of the angry mouse excrement" is what contributed to the content? To the point where the superiors are angry and ordered to shut down? Not standar
Author: I am not myself [F. s.t]
Source: evil baboons Information Security Team (www.eviloctal.com)
Note: In this article, the Firefox Technology Alliance (www.wrsky.com) was first launched and submitted to the evil gossip Information Security Team by Firefox members.
This is my penetration vulnerability. Patches have been released officially.Vulnerability Discovery Date: 2005.6.13Vulnerability version: Bo-blog version Vulnerability analysis and util
Bo-Blog-specific IISRewrite program for Windows Server this article will provide a scheme for Bo-Blog users to implement URL Rewrite on Windows IIS 5.1/6.0 server. The advantage of this solution is that it does not require any component support and does not need to install ISAPI filters (there are many on-site, but it is not recommended to use them for free). The disadvantage is that it is the same as imple
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Download Now: Bo Ge v1.6 (875kb)
New Features of Bo Ge v1.6: (released on February 1)
1. EnhancedProgramStability and running speed;
2. The interface effect is beautified and the layout is more reasonable;
3. added the function of saving webpages and displaying favorite URLs;
4. added a new webpage display style, which is pleasing to the eye;
5. built-in
objects between the presentation layer and the service layer.VO (Value object) value objectsTypically used for data transfer between business tiers, as is the case with PO, which contains only data. But it should be abstracted out of business objects that can correspond to tables, or not, depending on the needs of the business. Created with the new keyword, collected by GC.BO (business object) service objectFrom the business model perspective, see the domain objects in the UML component Domain
public static mapWebserviceparambo Webserviceparambo) {field[] fields = Webserviceparambo.getclass (). Getdeclaredfields ();hashmapfor (Field field:fields) {Variables that can be obtained to the private propertyField.setaccessible (TRUE);try {The name obtained is the attribute in the Bo object, Field.get (Webserviceparambo) is the value of the incoming Bo objectData.put (Field.getname (), Field.get (Webserv
VO: Value object, view object PO: Persistent object qo: Query ObjectDAO: Data Access Object--also DAO pattern DTO: Data Transfer Object--also DTO modePO: Full Name is Persistant object The most vivid understanding of persistent objects is that a PO is a record in the database. The advantage is that a record can be processed as an object and can be easily converted to other objects.BO: The full name is business object: The main function of the operational objects is to encapsulate the business lo
Into this revolutionary era of change, as consumers in the past in the production and consumption of the role of the consumer will also be able to change, upgrade to become a consumer. Such a new consumption pattern, "consumer", is emerging and rapidly expanding its influence, as it is not difficult to find out from the great power and penetration that has developed rapidly.Bo Jie Online Mall app development Company: ( Zhang Li 185-6541.3369 Micro, electricity )
There are things to "weave a scarf"-more and more netizens are becoming "micro-blog control." And for a long time, "micro-bo control" will find that the need to maintain micro-blogging more and more time, previously did not care about the small operation will become a cumbersome burden. 工欲善其事, its prerequisite. Try to be proud to swim 3 browser, will let you in "weaving the scarf" time, more comfortable, relaxed.
One-click to open Weibo
How do you o
Comparison of Brio with Bo and CognosThe following is a specific product comparison, this is reproduced, only for reference: This is brio and Cognos comparison [reprint] brio compared with Cognos, its advantage lies in:Product Integration Brio:brio's series of products is fully integrated, the interface is the same, in a product provides all the features. Also, all products use the same file format, so the products on various platforms, Client/server,
Perhaps some children's shoes will be very puzzled, why have micro-Bo Shou function, but can not save it, the effect of the picture below, the bottom is not saved two words, can not set it? In fact, can be set, but the children's shoes to find the wrong setting, this is just copy code, especially troublesome and delay everyone's time, The following small series will tell you how to quickly save the micro-Bo
Sina Weibo this action represents the meaning of the need not to ignore, is constantly proactively advance the card position, the active layout of the business sense. From the earliest "exclusive agreement" for celebrity resources, and then to gather manpower and resources to the rapid grinding of products, as well as to now in the promotion of ongoing attempts and grab position. This series of movements, the rapid and half step forward, the rhythm of the very good control.
Micro
a few words of emotion
After more than six months of sharpening, Micro Bo V6.0 (hereinafter referred to as V6) in October, the official test. As a massive user of mature products, every change is full of challenges. And as a micro-Bo product design team, not only to make the world a better place to forget beginner's mind, more than a customer service for the product is responsible for the party always.
A year ago, in a few friends of nearly 200,000 of fund-raising sponsorship, Yang Bo founded a website called Watercress, the slogan is "radish greens, their own strokes", content is books, movies, music, all Yang Bo their favorite things.
Now, this page simple Douban (www.douban.com) on the network more and more fire, the member has developed to nearly 200,000 people, the day clicks the quantity above 800,0
. implementing the DAO pattern can be more focused on writing data access Code.DAO mode is one of the standard Java EE design patterns. developers use this pattern to separate the underlying data access operations from the business logic on top. A typical DAO implementation has the following components:1. A DAO factory class;2. A DAO interface;3. A specific class that implements the DAO interface;4. Data passing objects (sometimes called value objects).The specific DAO class contains the logic t
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