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Debug Entry Find the XmlConfigBuilder Test in the mybatis source code and run shouldSuccessfully Load XMLConfigFile () in debug mode. Initialization First, create the XMLConfigBuilder object, in the construction method: Reading files through InputStream to generate Document objects for XML, the operations related to XML are beyond the sc ...

In the last chapter, we explained how to improve query efficiency by lazy loading of mybatis. What other methods can improve query efficiency besides lazy loading? This is the cache we talked about in this chapter. mybatis provides us with a first-level cache and a second-level cache, which can be understood by the following figure: 　　 Fir ...

In mybatis-spring, there's a comment called MapperScan, and we'll start with him today. When we add this comment, it represents the introduction of Bean s of the MapperScanner Registrar class. public class MapperScannerRegistrar implements ImportBeanDefinitionRegistrar, ResourceLoaderAware {} He's an example of ImportBean Definition Registrar ...

Note: This article is reproduced from Nan Ke Meng In the previous article, "Deep and Simple Mybatis Series (3) - Configuration Detailed Properties and Environments" (Mybatis Source Chapter), we introduced properties and environments. This article continues to talk about one of the remaining configuration nodes: type Aliases. The typeA ...

MyBatis designed a two-level structure for data caching, which is divided into a first-level cache and a second-level cache:A first-level cache is a Session session-level cache: among SqlSession objects that represent a database session, also known as a local cache.Level 1 caching is a feature implemented internally by MyBatis that users cannot ...

Click Open Link I used Idea's IDE environment. To create xml more easily and quickly using mybatis framework, I created templates in my IDE environment. Specific template creation can be viewed by clicking on the following link: ----> to be added later Under the resource folder, create the configuration xml file - > mybatis. cfg. xml Co ...

Mybatis development environment, select: Eclipse, MySQL 5.5, JDK 1.8, mybatis 3.2.3.jar package. These software tools can be downloaded from their official websites. The whole process is summarized as follows. In this tutorial, build java Engineering, but generally is the development of web projects, this series of tutorials ...

abstract Recently, mybatis framework has been studied. As an excellent ORM framework, many excellent design ideas of mybatis are worth learning. The configuration files of mybatis are mainly config and mapper. Config defines global parameters: data source type (POOL, UNPOOLED, JNDI), transaction management type (default manag ...

Secondary Cache This tag needs to be added to the mapping file <cache/> The select statement in the mapping statement will be cached, and the insert update delete statement in the mapping statement will refresh the cacheCache recycling using LRU algorithmNow the complete configuration file is as follows <?xml version="1.0" encoding ...

easymybatis is a mybatis enhanced class library, which aims to simplify the development of mybatis and make it more efficient. git address: easymybatis demo address: demo with springboot easymybatis has the following characteristics: The CRUD operation can be completed without writing xml files. Support multi-table query, aggregate query a ...