WebStatementHandler handler = (StatementHandler)invocation.getTarget (); BoundSql boundSql = handler.getBoundSql (); //mybatis 소소를 깊게 보기 싫어서 그냥 쓴다. PreparedStatementHandler delegate = (PreparedStatementHandler) F1.get (handler); MappedStatement mappedStatement = (MappedStatement) F2.get (delegate); String … Webmybatis拦截器可以对下面4种对象进行拦截：. 1、 Executor ：mybatis的内部执行器，作为调度核心负责调用 StatementHandler 操作数据库，并把结果集通过 ResultSetHandler 进行自动映射. 2、 StatementHandler ： 封装了 JDBC Statement 操作，是sql语法的构建器，负责和数据库进行交互 ...
Mybatis通过Interceptor来简单实现影子表进行动态sql读取和写入
WebStatementHandler (prepare, parameterize, Batch, Update, and Query) intercepts the processing of Sql syntax builds Mybatis adopts the responsibility chain mode, organizes multiple interceptors (plug-ins) through dynamic proxy, through which the interceptors can change the default behavior of Mybatis (such as SQL rewriting). WebMetaObject metaStatementHandler = SystemMetaObject.forObject(statementHandler); String sql = statementHandler.getBoundSql().getSql(); chimney bird spikes
DECLARE HANDLER statement - IBM
WebMar 23, 2024 · 实现Interceptor接口，重写intercept方法。 在intercept方法中编写拦截逻辑，对需要拦截的方法进行增强或修改。 在plugin方法中，将拦截器实例化，并返回代理对象。 在Mybatis配置中添加插件。 以下是一个统计SQL执行时间示例： Webpublic Object intercept (Invocation invocation) throws Throwable { StatementHandler handler = (StatementHandler) invocation.getTarget (); MetaObject metaObject = MetaObject.forObject (handler); Page page = pageByMetaObject (metaObject); if (page == null (page.getPageCount () == 0 && page.getPageSize () == 0)) return … WebMay 16, 2024 · public class Plugin implements InvocationHandler { public static Object wrap( Object target, Interceptor interceptor) { Map , Set > signatureMap = … chimney block loading