Routing decisions entered in the Route node â™ s filter table as filter patterns may be any well formed category ( c) XPath general expression. 作为筛选模式输入Route节点的路由决策可以是任何组织良好的类别(c)XPath常规表达式。
By using content based routing, it is easy to evaluate an SQL expression against the contents of a message and take a decision whether the subscriber really need to get the message or not. 通过使用基于内容的路由,可以很方便地针对消息的内容评估SQL表达式,从而决定订阅者是否真的需要获得消息。