Log4net Repository 模块

一。

       Repository 的意思是储存库，并且根据之前的分析，显然Repository模块 维护着系统中定义的ILogger,以及和Name，Assamble的对应关系，和Appender 的对应关系，那么现在要分析的就是：

• 如何实现命名实体。
• 如何支持实体查询。
• 实体查询是不是就是依赖查询呢？

二。

1.Hierarchy

在使用DefaultRepositorySelector创建ILoggerRepository时默认使用的LoggerRepository为Hierarchy ，

而Hierarchy结构：

Hierarchical organization of loggers

    /// This class is specialized in retrieving loggers by name and
    /// also maintaining the logger hierarchy. Implements the
    /// <see cref="ILoggerRepository"/> interface.
    /// </para>
    /// <para>
    /// The structure of the logger hierarchy is maintained by the
    /// <see cref="GetLogger(string)"/> method. The hierarchy is such that children
    /// link to their parent but parents do not have any references to their
    /// children. Moreover, loggers can be instantiated in any order, in
    /// particular descendant before ancestor.
    /// </para>
    /// <para>
    /// In case a descendant is created before a particular ancestor,
    /// then it creates a provision node for the ancestor and adds itself
    /// to the provision node. Other descendants of the same ancestor add
    /// themselves to the previously created provision node.

2.

 

3.