Spring 事务管理API分析

//获得事务信息
TransactionStatus getTransaction(TransactionDefinition definition) 
//提交事务
void commit(TransactionStatus status) 
//回滚事务
void rollback(TransactionStatus status)

//用于Spring JDBC以及Mybatis框架的事务代理
DataSourceTransactionManager
//用于Hibernate框架事务代理
HibernateTransactionManager
//用于Jpa框架的事务代理
JpaTransactionManager
//用于JDO框架的事务代码
JdoTransactionManager
//用于Jta事务代理，一个事务跨多资源必须要使用
JtaTransactionManager

public interface TransactionDefinition {
     //事务的传播行为
    int PROPAGATION_REQUIRED = 0;
    int PROPAGATION_SUPPORTS = 1;
    int PROPAGATION_MANDATORY = 2;
    int PROPAGATION_REQUIRES_NEW = 3;
    int PROPAGATION_NOT_SUPPORTED = 4;
    int PROPAGATION_NEVER = 5;
    int PROPAGATION_NESTED = 6;
    //事务的隔离级别
    int ISOLATION_DEFAULT = -1;
    int ISOLATION_READ_UNCOMMITTED = Connection.TRANSACTION_READ_UNCOMMITTED;
    int ISOLATION_READ_COMMITTED = Connection.TRANSACTION_READ_COMMITTED;
    int ISOLATION_REPEATABLE_READ = Connection.TRANSACTION_REPEATABLE_READ;
    int ISOLATION_SERIALIZABLE = Connection.TRANSACTION_SERIALIZABLE;
    int TIMEOUT_DEFAULT = -1;
    //获得事务信息
    int getPropagationBehavior();
    int getIsolationLevel();
    int getTimeout();
    boolean isReadOnly();
    String getName();
}

public interface TransactionStatus{
    // 是否是新的事物
    boolean isNewTransaction(); 
    // 是否有恢复点
    boolean hasSavepoint();
    // 设置为只回滚  
    void setRollbackOnly();
    // 是否为只回滚
    boolean isRollbackOnly();
    // 是否已完成  
    boolean isCompleted; 
}