From http://www.contextfree.net)
Declare war on dependencies
Dependency inversion, control inversion, and dependency Injection Analysis
In the book Tao nature-object-oriented Practice Guide, we use a dialectical relationship between opposites to illustrate the "template method" model-"positive dependency. dependency inversion
[From: http://www.contextfree.net/wangyw/index.html]
Author: Wang yongwu
In the book Tao nature-object-oriented Practice Guide, we use a dialectical relationship between opposites to illustrate the "template method" model-"positive dependency. dependency inversion "(see section 15th of" tao nature "[Wang yongwu, Wang Yonggang 2004]). This view of putting the "Hollywood" principle and the "Dependency inversion
In the book Tao nature-object-oriented Practice Guide, we use a dialectical relationship between opposites to illustrate the "template method" model-"positive dependency. dependency inversion "(see section 15th of" tao nature "[Wang yongwu, Wang Yonggang 2004]). This view of putting the "Hollywood" principle and the "Dependency inversion" principle in an equal volume actually comes from the section on the l
In the book Tao nature-object-oriented Practice Guide, we use a dialectical relationship between opposites to illustrate the "template method" model-"positive dependency. dependency inversion "(see section 15th of" tao nature "[Wang yongwu, Wang Yonggang 2004]). This view of putting the "Hollywood" principle and the "Dependency inversion" principle in an equal volume actually comes from the section on the l
In the book Tao nature-object-oriented Practice Guide, we use a dialectical relationship between opposites to illustrate the "template method" model-"positive dependency. dependency inversion "(see section 15th of" tao nature "[Wang yongwu, Wang Yonggang 2004]). This view of putting the "Hollywood" principle and the "Dependency inversion" principle in an equal volume actually comes from the section on the l
longer dependent on the underlying modules, but they are both dependent on abstraction. Rapidpassiveengine depends on the parameters of the Icustomizehandler interface type, and Customizehandler is also dependent on icustomizehandler--in the way it implements the interface, which is a paradigm of dependency inversion.
• Controlled inversion (inversion of
objectreturn Map.get (name);}}*************My handle class:*************public class Handle implements invocationhandler{Private Object obj;Public Handle (Object obj) {This.obj = obj;}@Overridepublic object invoke (object proxy, Method method, object[] args) throws Throwable {Filter out the pre-and post-execution methods of the service layerif (Method.tostring (). Contains ("Service")) {return Method.invoke (obj, args);}Add pre-and post-execution methods only at the DAO layerDobefor ();Object o
noun explanation
dependency: A description of the relationship between model elements. For example, Class A calls Class B, so we say Class A relies on Class B.
coupling: A description of the relationship between model elements. For example, Class A calls Class B or class B calls Class A, so we say that class A has a coupling relationship with Class B.
Coupling degree: A quantitative description of the degree of dependency between model elements.
noun explanation
dependency: A description of the relationship between model elements. For example, Class A calls Class B, so we say Class A relies on Class B.
coupling: A description of the relationship between model elements. For example, Class A calls Class B or class B calls Class A, so we say that class A has a coupling relationship with Class B.
Coupling degree: A quantitative description of the degree of dependency between model elements.
Glossary
Dependency: describes the relationship between model elements. For example, if Class A calls Class B, Class A depends on Class B.
Coupling: A description of the relationship between model elements. For example, if Class A calls Class B or Class B calls Class A, Class A is coupled with Class B.
Coupling Degree: quantitative description of the degree of dependency between model elements.
Control: describes the relationship between mo
This article introduces the content is about PHP: Dependency injection, control inversion, dependency inversion principle, has a certain reference value, now share to everyone, the need for friends can refer to
Judging the code is good or bad, we have our own standard: cohesion Poly, low coupling. In order to solve this problem, PHP has many excellent design pat
Understanding of control inversion in asp.net, and understanding of asp.net Inversion
IOC is interpreted as: "Inversion of control is a common characteristic of frameworks, so saying that these lightweight containers are special because they use
changed. You only need to modify the configuration file, and the stability is improved as follows:
public void PlayMedia() { IMediaFile _mtype = Assembly.Load(ConfigurationManager.AppSettings["AssemName"]).CreateInstance(ConfigurationManager.AppSettings["MediaName"]); IPlayer _player = Assembly.Load(ConfigurationManager.AppSettings["AssemName"]).CreateInstance(ConfigurationManager.AppSettings["PlayerName"]); _player.Play(_mtype); }
Which ob
Yesterday, I went through a friend's space and saw a discussion about control reversal. I wrote a piece of message, but after a long time, I didn't touch these words, so I checked some information, sorted it out again, and discussed it with you.Before sorting out, we should first talk about "dependency". What is dependency? dependency is association. The "association" defined in UML is the most extensive one, it is shown that there is a root line betw
Dependency Injection control inversion Service locator mode Dependency injection inversion of the control IoC service Locator Patterns
Author/martin Fowler compilation/Transparency
The Java community has recently unleashed a flurry of lightweight containers that can help developers assemble components from different pr
changed, only need to change the configuration file, stability has improved, as follows: public void PlayMedia () { Imediafile _mtype = Assembly.Load (configurationmanager.appsettings["Assemname"]). CreateInstance (configurationmanager.appsettings["MediaName"]); IPlayer _player = Assembly.Load (configurationmanager.appsettings["Assemname"]). CreateInstance (configurationmanager.appsettings["playername"]); _player. Play (_mtype); }This object
Controlled inversion (ioc,inversion of Control), is a concept, an idea. Refers to the object that is traditionally manipulated directly by the program code to the container, through the container to achieve the assembly and management of the object. Control inversion is the
savetodevice () {// Method for storing data to USB }}
From this perspective, dependency inversion means that a method does not depend on implementation, but both methods and implementations depend on abstraction.
IOC control is the meaning of control, and the meaning behind it is also the transfer of dependency. If a depends on B, it means that B has
First look at an example:
1. Detailed example code for PHP control inversion (IOC) and Dependency injection (DI)
Introduction: That is, if in the future development process, to the Class B or Class C modification, once the change of function, the number of function parameters, and even the entire class structure adjustment, we have to make corresponding adjustm
I. The basic knowledge and principles of the IOC:
The background of 1.IoC theory: in the software system designed by object-oriented method, the bottom implementation is composed of N objects, and all the objects realize the business logic of the system through cooperating with each other. That is, the coupling between objects in a software system, object A and object B are related, object B is dependent on object C, so there is a complex dependency b
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.