define passivation

Activation and passivation of JavaBean objects:If a property, such as String, is placed in the session field, or if a person class is placed in the session field, in order to implement the passivation and activation of the session, the JavaBean must implement the Serializable interface ...1.javaBean personpackage cn.itheima.domain;import Java.io.serializable;import Javax.servlet.http.httpsessionactivationli

Application Scenario: 1. Generally speaking, after the server is started, will not shut down again, but if forced to need to restart, and the user session is still in the corresponding operation, then need to use serialization to save sessions to put on the hard disk, the server restart, and reload. This ensures that the user information is not lost and that the permanent save is implemented 2. Taobao every year there will be regularly snapped activities, many users will be in advance login wa

The EJB stateful bean passivation time setting is used in JBoss: modifying Standardjboss.xml files Org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor Org.jboss.ejb.plugins.TxInterceptorCMT Org.jboss.ejb.plugins.CallValidationInterceptor Org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor Org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor Org.jboss.ejb.plugins.TxInterceptorBMT Org.jboss.ejb.plugins.CallValidatio

Introduction To define a variable in the source file that is related to the line number, it is too slow to manually enter each time. This article describes how to use macro definitions to define variables related to line numbers. For example, we want to define a shape variable such as a_10 in the 10th line of the source code. use macro definition to accomplish

Enter the appropriate information to connect to the login. 5.6 Verify that you are really connected to Oracle Write an SQL statement to verify that the query can see the following effect, indicating that the connection was successful. 6, define the client environment variable Nls_lang Machines that do not have the environment variable configured use the Plsql client to insert Chine

than 8 digits.) Trouble, you can enter the usual oneself habit of short password can be) No need to configure "Quick recovery zone" The Oracle database provides a sample user Scott/tiger, which can be used to practice the user at all times. If you do not create the user at this time, you can later use the script to create the user allocating memory to an Oracle database

#define是C语言中提供的宏定义命令, the main purpose is to provide programmers with certain convenience in programming, and to a certain extent, improve the efficiency of the program, but students often do not understand the nature of the command in learning, always create some confusion here, in the programming of the misuse of the command, To make the program run inconsistent with the intended purpose, or to read the program written by others, the results of the

Macro definition in many languages can see its shadow, C #, C++,c, and so on, especially the system API inside a lot of macro definition, looking very bluffing people. Reasonable use of macro definition, you can make your code look more standardized, more convenient, especially in certain places. Using a macro definition can also make your own code look tall with wood on it!This article was changed from http://www.cnblogs.com/ios8/p/ios-hong.htmlOn-line macro definition of iOS more, I summed up

Usage One: const is used for class member variables, once defined cannot be modified, define is used for global constants, is not used for definitions of class member variables, const can be used in classes or outside classes, define cannot.Definition: const constant NAME = value; No $ symbolAccess: Class Name:: Constant Name or interface name:: Constant name as　　　　is to access the direct constant name outs

, we explained that the best way to create a class is to define a property with a constructor and define the method with a prototype. This approach also applies to the inheritance mechanism, using the object to impersonate the inheritance constructor property, using the prototype chain to inherit the method of the prototype object . Rewrite the previous example in either of these ways, with the following co

Gradle-define Task and Gradle-define Task We talked about the Groovy syntax and the execution sequence of Gradle. This article describes the definition of a Task. Task can be understood as the execution unit of Gradle, which is too important. According to the previous analysis, Gradle completes the specific build tasks through tasks. Let's take a look at the definition of tasks. The simplest and most stra

Section 2 Interface Definition Technically, an interface is a set of data structures that contain functional methods. Through this set of data structures, the customerCodeYou can call the functions of component objects. The interface is defined in the following format:[Attributes] [modifiers] interface identifier [: Base-list] {interface-body} [;] Note: 1. attributes (optional): additional definition information. 2. modifiers (optional): allowed modifiers include new and four acce

Tags: style blog http io color ar os using SPTo write a rule in Excel, you only need to write rules in the table and use the Oracle Policy Modeling style to identify the type of information in the cell.So that these rules can be compiled and used in Oracle determinations Engine. You can create any number of rule sheets in your document.Understanding styles for a rule tableThe Excel rules that you intend to compile in Oracle policy Modeling need to be styled with the style tags provided with the

The following is the right border of the set button and the color of the bottom border is red and the frame size is 3DP, such as:Create a new Buttonstyle.xml file in drawable with the following contents:XML version= "1.0" encoding= "UTF-8"?> layer-listxmlns:android= "Http://schemas.android.com/apk/res/android"> Hyphen Color Value -Item> Shape> SolidAndroid:color= "#ff0000" /> Shape> Item> body Background color value - ItemAndroid:bottom= "3DP"Android:right=

As shown below: The above is a small series for everyone to use JSON to define functions, in which you can define the implementation of a number of functions all content, I hope that we support cloud Habitat Community ~

The first method, defined in Spring-servlet.xmlThe second method, Web. XML, defines the processing pageI know that there are two ways to configure Error-page in Web. XML, one is to configure by error code, but to configure it by the type of exception, respectively, as follows:A. Configuring Error-page with error codesEg.The above is configured to jump to the error handling page error.jsp when the system has a 500 error (that is, a server internal error).two. Configuring Error-page by type of e

Tags: variable oracle define variable declare1. Define (that is, host variable)The main role of the host variable is to act as an alternative variable, a medium in which the host environment can interact with Oracle . When you define a host variable by define, you must specify the variable name and the value of the var

As we all know, in PHP (PHP 4 and later), we can use the function define () to define constants, for example: However, after PHP 5.3.0, in addition to using function define (), we can also use the PHP keyword const to define constants. For example: Although constants can be defined in both of these ways, what is the

1. # difference between define and typedef # Define is generally used to define constants and statement macro definitions and act as macro replacement during compilation. Of course, you can also complete a small part of the typedef function. Remember that it is only a small part. Typedef is used to declare a new type name for readability and variable definition.

ExtJS learning ------- Ext. define alias and slave name, two methods to define static methods, mixed attributes and other attributes (1) Ext. define alias and backup name Ext. onReady (function () {Ext. define ('user', {config: {name: 'zhang san', age: 23}, // use the alias: 'Alias _ user', // use the alternate name a