aspect acd

Foo, and then the code that calls Foo () doesn't have to be modified at all! #-*-coding:utf-8-*-import timedef foo (): print ' in foo () ' # defines a timer, passes in one, and returns another method with the chronograph function added Def Timeit (func): # Define an inline wrapper function that adds the timer function to the incoming function. def wrapper (): start = Time.clock () func () end =time.clock () Print ' Used: ', End-start # Returns the

AOP is also called aspect-oriented programming, the "notice" is the specific aspect of the implementation, divided into before (forward notice), after (post notice), around (surround notice), with spring students must be very familiar with it, and in JS, AOP is a serious neglected technical points. However, the use of AOP can effectively improve the JS code logic, such as the front-end framework dojo and Yu

ASPECTJ allows you to use annotation to define facets, pointcuts, and enhanced processing. That is, by annotating the @aspect to turn a plain Java class into a slice bean and then enhance the other @component component Java class To use the annotation aspectj, you need to go to the environment configuration (URI configuration of XML namespace of the schema, installation of Jar package) 1. Environment configuration. 1.1 Using XML Schema Configuration F

First, the XML configuration form1. Add a facet-oriented configuration in the spring configuration fileThe method in the slice class is executed when any method of the Com.activemq.service.impl.ConsumerServiceImpl interface implementation class is called.2. Write Slice classAttention:1) can not do the Web layer (for example: com.activemq.action.ConsumerController) Proxy insert operation, the Pro-test is invalid.(Before the web layer is considered invalid, in fact, is not, invalid because the sli

Implementation of Spring_aop_annotation:1.1 Adding an AOP schema to Beans.xml1.2 Open automatic retrieval of AOP in XML1.3 Creating a class that needs to implement a dynamic proxy1.4 Import ASPECTJ Package, Spring uses aspect this package to implement AOP, so you need to import this package.MAVEN's Pom.xml:1.5 Use @aspect on this class to declare that the class is a slice classLet this slice class be manage

Programming with spring-oriented facets1. IntroductionAOP is a complement to OOP and provides another way of thinking about the structure of the program.The modular key unit of OOP is the class.AOP is the aspect facet.AOP divides the logic of the program into separate blocks (called concern center of gravity, Focus point).AOP is used to increase the modularity of the cross-cutting center of gravity (cross-cutting concerns).A cross-cutting concern is a

Choosing the ideal welding equipmentYou can get both functions in one machine. As cleanliness is a very important aspect this determines comfort and grandeur, house Clea. Every year as Christmas, Father ' s Day and dad's birthday roll around, the usual list of possible presents immediately come S to mind. Does He need a new razor? Anything starting to look a little ratty in the wardrobe? How about in the garage, CO2 laser engraver tool shed or basemen

Programming AOP for Facets is a major feature of springAspect Facets: A (Enhanced) class that encapsulates the functionality of a common featureAdvice by: A method of encapsulating enhancements in a slice class.PointCut: A pointcut, is the concept of a collection that expresses using a regular expressionBefore and after all the methods of all core business objects (transactional AOP typical applications)Joinpoint: Connection point, where the program needs to join advice, and the ponitcut being e

successfully.③after-returning: Notify after return, call notification after the Tangency method executes successfully.④after-throwing: Notifies after a throw is thrown, and a notification is invoked after the Pointcut method throws an exception.⑤arount: Surround notification, which invokes the notification both before the method call and after the method call. And can decide whether this method executes, when to execute.4. Facets ( Aspect):The combin

these infrastructure services, and with this problem, a lightweight Java solution emerges, which is the spring framework. Spring was born to simplify enterprise-level system development, and the spring Framework provides a simple, effective solution for Java EE to apply common problems, using spring, you can use simple Pojo (Plain old Java Object) To implement features that were previously only EJB-enabled. This will not only simplify server-side development, but any Java system development ca

as either a enabling technology that allows Spring to provide declarative transaction manage ment without EJB; Or use the full power of the Spring AOP framework to implement custom aspects.If you is interested only in generic declarative services or other pre-packaged declarative middleware services such as P Ooling, you don ' t need to work directly with Spring AOP, and can skip the most of the this chapter.1.1. AOP ConceptsLet us begin by defining some central AOP concepts. These terms is not

concise and elegant. In future maintenance, because business logic code is stored separately from common code, and common code is centrally stored, it makes maintenance easier and easier. Aspect-oriented programming AOP technology is to solve this problem is born, the section is cross-section, as shown in Figure 6-5, represents a universal common function, for example, log section, permission section and transaction plane. The

Spring in ActionData injectionAspect-oriented programmingPlain Old Java ObjectDependency injection keeps loosely combined software components that work togetherAspect-oriented programming allows you to isolate functionality across applications to form reusable componentsAspect-oriented programming is often defined as a technique that enables software systems to achieve separation of concerns. The system consists of many different components, each of which is responsible for each componentA speci

classHelloaroundadviceImplementsMethodinterceptor { PublicObject Invoke (Methodinvocation arg0)throwsthrowable {System.out.println ("++++++before Advice"); Arg0.proceed (); System.out.println ("++++++after Advice"); return NULL; }}XML configuration: Spring-aop-schema.xmlXML version= "1.0" encoding= "UTF-8"?>Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"XMLNS:AOP= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"xsi:schemalocation

The example in this article describes how PHP uses GD to create a way to maintain a wide-ratio thumbnail. Share to everyone for your reference. as follows: /** * Create a thumbnail image from $inputFileName no taller or wider than * $maxSize. Returns the new image resource or false on error. * Author:mthorn.net/function thumbnail ($inputFileName, $maxSize = m) {$info = getimagesize ($inputFileName); $type = Isset ($info [' type '])? $info [' type ']: $info [2]; Check support of file ty

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too many indexes and inadequate, incorrect indexes are not good for performance: Each index established on the table increases the storage overhead, and the index increases processing overhead for insert, delete, and update operations. In addition, too many composite indexes, in the case of single-field index, generally have no value; Conversely, it also reduces performance when data is being deleted, especially for tables that are frequently updated, with greater negative impact.Second questio

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Cut-off refers to things that have the same commonality in the code you write in different parts of the project. It may be a special way of handling exceptions in your code, recording method calls, time processing, re-executing some methods, and so

XSLT is something similar to CSS. It mainly converts XML into a style sheet output in HTML format (I have not understood it yet ).To output the content in XML in HTML format, you must create a template in XSLT to set the data format or display style