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The session cache stores the correlated object graphs. By default, when hibernate loads the customer object from the database, it loads all associated order objects at the same time. Take the customer and order classes as an example. Assuming that the customer_id foreign key of the orders table can be null, figure 1 lists the records in the customers table and the orders table. The find () method of the following session

abstracted, or the process of creating an object is encapsulated, as a customer program, you only need to use objects, instead of the logic in the object creation process. The structural mode is designed to solve the problem of assembling existing classes and their interaction methods, so as to achieve certain functions. The structural model can solve many problems. For example: Scalability (appearance,

Http://mef.codeplex.com/wikipage? Title = overview referringtitle = home) What is MEF? Managed extensibility framework (MEF) can easily construct scalable applications.Program. MEF provides discovery and combination capabilities, so you can choose to load the plug-in. What problems does MEF solve? MEF presents a simple extension problem durin

Javascript is an object-based, event-driven, and secure scripting language. It is widely used, not just webpage, but not trapped by jsp.Based on the object, you do not need to specify the type of the variable. You can give it a value of 3, which knows it is an integer. If you assign a value of '

Javascript is an object-based, event-driven, and secure scripting language. It is widely used, not just webpage, but not trapped by jsp. Based on the object, you do not need to specify the type of the variable. You can give it a value of 3, which knows it is an integer. If you assign a value of '

What is good software? First, it must meet the customer's requirements and do what the customer wants. Then, good software is well-designed and well-coded. It is easy to maintain, reuse, and expand. In other words, good software not only satisfies customers, but als

Javascript is the basis of many things, such as jsp and ajax. If this is not the case, it will be more difficult to learn these things, lay a solid economic foundation for future learning/('V ')/. Javascript is an object-and event-driven and secure scripting language.It is widely used, not only webpage, but not jsp. Ba

1. Bob has two keys: one is the public key and the other is the private key. 2. Bob sent the public key to his friends, who are Parti, Doug, and Susan. 3. Susan wants to write a confidential letter to Bob. After writing it, She encrypted it with Bob's public key to achieve the effect of confidentiality. 4.

* iOS is an operating system developed by Apple (OS is the abbreviation of operating Systen), just like Windows XP, Window 7, which is used on the computer, is the operating system.* What is an operating system? The operating syst

JavaScript is an object-based and event-driven, security-based scripting language that is widely used, not just web pages, and not trapped by JSP. Based on the object, that is, you do not need to specify the type of the variable, you give him a 3, it knows the integer, if given a value of '

What is a style sheet? CSSYesCascading Style Sheet. It is translated as "stacked style form 」. It is a markup language used to (enhance) control webpage styles and allow separation of style information from webpage content. How to add a style sheet to Your webpage You can use the following3.You can add a style

The latest version of this article has been migrated:Http://thinkinside.tk/2006/10/12/whats_conception.html Logic studies the structure and law of thinking forms, and studies reasoning methods. We need to study the nature of human cognition, understand the laws of knowledge generation and development, and gain great inspiration from logic. This seriesArticleFirst, we start to study general logic and use computer modeling techniques and methods to propose a UML Model for logic as the compu