#coding: Utf-8 ' strategy mode: is the use of multiple algorithms to solve a problem, the most important feature is the ability to transparently switch the algorithm at runtime (client-side code is not aware of change) If there are two algorithms, one for a small amount of input effect, and the other for a lot of input, then you can use the policy mode at run time based on the input data to decide which algorithm to use to think or to cite an examp
Table policy (Table strategy)
In this strategy, the persistence engine (persistence engine) uses a table in a relational database to generate the primary key. This strategy portability is better because all relational databases support this strategy. Different Java EE application servers use different persistence engi
launch plan To achieve the company's goals. Strategy is a set of tactics, it is above the tactical, but not out of the tactical, it directs the tactics, the tactics assists it to succeed.
A very simple example of the launch strategy: the same project, a daily consumption of 50,000 yuan and a month to spend 50,000 yuan, how would you vote separately? You can think about it according to the project you are
Hello everyone, I am a just contact SEO novice webmaster soon. I recently in the operation of the giant Amoy customer network projects, encountered a lot of problems, found that according to those so-called SEO Master said some things, I did not see after the implementation of what effect, is now trying to find their own SEO personalized coping strategies. I think the best way to improve SEO skills is to encounter a problem, after referring to Baidu search s
Policy mode (stragety pattern)
The strategy pattern is a behavioral pattern, which defines a series of algorithms, encapsulates each algorithm, and allows them to replace each other, allowing the algorithm to change independently of the customer using it.
Using the policy model, you can separate behavior from the environment. The Environment class is responsible for maintaining and querying the behavior classes, and the various algorithms are provid
Role:
Define a series of algorithms that encapsulate them one by one and make them interchangeable. This mode allows the algorithm to be independent of the client that uses it.
Analytical:
In short, the strategy pattern is the encapsulation of an algorithm. When dealing with a problem there may be a variety of algorithms, the interface of these algorithms (input parameters, output parameters, etc.) are consistent, then you can consider using the
StrategyPart 1: What happens when a system has an explosion of strategy objects? Is there some way to better manage these strategies?Part 2: In the implementation section of this pattern, the authors describe two ways in which a strategy can get the information it needs to do its job. one way describes how a strategy object cocould get passed a reference to the c
In all my views on "Enterprise Informatization" in this series, I am talking about "Informatization" from the perspective of "enterprise"
Not from the perspective of a software company, I am very clear about how software companies are doing and why!
Therefore, the points, content, and suggestions I 've talked about will make it unacceptable to many people, so I can only tell you three words:No
Of course, I may be narrow-minded with some angles and consciousness, so please be clear about the
SEO is to optimize the site so that the site in search engines can get the top ranking, and then increase the exposure of the site to get enough traffic, and ultimately enhance the site's sales capacity or promotional capabilities, so the basic SEO strategy is based on the characteristics of the search engine summed up, usually divided into: keyword strategy, Web page optimization policies, other policies.
Can not blindly find the keyword to start optimization. Optimization is a long-term implementation of the process, corporate Web site optimization needs some marketing strategies. Then there is a tactical strategy that may be more helpful to optimization, while achieving both easy optimization and direct benefits. In particular, enterprises in the search for network companies to optimize the time should pay more attention to these matters the most com
The site's SEO diagnosis is a branch of SEO services, before the special proposed, but in fact already exist, such as SEO consultants to provide advice to the site when the SEO will be diagnosed, SEO diagnosis for the diagnosis of professional knowledge reserve requirements are very high, For the global site SEO data analysis requirements are also very high. SEO to the site to diagnose the purpose is to provide a better and more efficient SEO direction and s
Introduction: An effective and robust transaction strategy is critical for maintaining data consistency and integrity. API Layer transaction policies are easy to implement and are ideal for most business applications. The author of the Transaction Policy series, Mark Richards, uses an example of the Enterprise JavaBeans (EJB) 3.0 specification to explain what the transaction strategy means and how to implem
In the previous article, we analyzed three reasons for the gap between strategy and BPM: No detailed description and decomposition strategy, no governance of the implementation strategy, no measurement strategy. Bridging the gap requires the following three areas of work, namely, the elaboration and decomposition of st
From
The policy mode belongs to the behavior pattern of the object. It is intended for a set of algorithms that encapsulate each algorithm in a separate class with a common interface, so that they can be replaced with each other. The policy pattern allows the algorithm to change without affecting the client.
The strategy pattern is the wrapper over the algorithm, which separates the responsibility of the algorithm and the algorithm itself, delegati
It is important to back up your database if your database tables are missing or corrupted. If a system crash occurs, you will want to be able to recover as few data from your table as possible to the state at which the crash occurred. This paper mainly on the MyISAM table to do backup recovery.
Backup strategy One: Copy database files directly (not recommended)
Backup strategy Two: Use Mysqlhotcopy backup
ConceptThe policy pattern defines a series of algorithms, encapsulates each algorithm, and allows them to be replaced with each other. The policy model allows the algorithm to be independent of the customer using itChanges in the state. (Original: The Strategy Pattern defines a family of algorithms,encapsulates each one,and makesthem interchangeable. Strategy lets the algorithm vary independently from clien
Bridging (bridge) mode is one of the structural patterns, while the policy (strategy) pattern belongs to the behavior pattern. The following are their UML structure diagrams.
Bridge mode:Policy mode:In bridging mode, abstraction refers to implementor by aggregation. Give an example:
Policy mode: I want to draw a circle, a solid circle, I can use Solidpen to configure, draw a dashed circle can be configured with Dashedpen. This is the
I think the strategy pattern is very similar to the factory method pattern.
Policy mode:
Factory method Mode:
If you look at the picture alone, there is no similarity. But look at the calling method to know:
Policy mode:
Context context = new context ();
Abstractstrategy strategy;
Which strategy to use is determined by the caller
1. Definition:The strategy Pattern defines a family of algorithms,encapsulates each one,and makes them interchangeable. Strategy lets the algorithm vary independently from clients.Define a series of algorithms (these algorithms achieve the same work, just implement the difference), it can already call all the algorithms in the same way, reduce the coupling between the algorithm class and the algorithm.2. Pu
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