identity identifier generator

Http://www.cnblogs.com/talo/articles/1663978.html This article describes the significance of the generator attribute of hibernate. There are 7 types of generator attributes. This article briefly describes the meaning and usage of these 7 classes.

This article describes the meaning of Hibernate's generator attribute. The generator attribute has 7 classes, and this article briefly describes the meaning and usage of these 7 classes. [XHTML]View Plaincopy class name="Onlyfun.caterpillar.

This article describes the meaning of Hibernate's generator attribute. The generator attribute has 7 classes, and this article briefly describes the meaning and usage of these 7 classes. [XHTML]View Plaincopy class name="Onlyfun.caterpillar.

The Hibernate primary key generator is used to generate the primary key for data table records. There are several common primary key generation methods.Key GeneratorPrimary key generator:First, we will introduce several common primary key generators:

"Increment"The primary key increments in numerical order. The implementation mechanism of this method is to maintain a variable in the current application instance to save the current maximum value, and then add 1 as the primary key each time the

Hibernate uses object identifiers (OIDs) to establish correspondence between objects in memory and records in database tables, and the OID of the object corresponds to the primary key of the database. To ensure the uniqueness and immutability of the

IncrementGenerates an auto-grow primary key for a long, int, short data column. Used in the database to not set the table primary key to self-increment, but also want the table primary key self-incrementImplementation mechanism: Maintain a variable

Hibernate generator element generates the primary key for new record. There are provided options provided by the generator method to be used in different situations.   The element   Here is the example Here are the list of some commonly used

  Object IdentifierIn relational database tables, the primary key is used to identify records and ensure the uniqueness of each record. In Java, you can determine whether the two objects are equal by comparing whether the memory addresses of the

Enterprise-level Java applications often move data back and forth between Java objects and related databases. From manually writing SQL code There are many methods to implement the mature object relationship ing (ORM) solution. Regardless of the