error handler

基本解释

Note that if no error handler is attached, the default implementation throws a SAXParseException on any validation error.
注意，如果没有指定错误处理程序，则默认的实现对任何验证错误都抛出 SAXParseException 异常。
You can then work with the XMLReader instance as you would with a straight SAX application which of course includes setting an error handler.
接下来可以像处理一个简单 SAX 应用程序一样处理 XMLReader 实例，并设置一个错误处理程序。
Note that proper exception handling in SQL PL dictates that each procedure has an error handler that could easily enough have told us the failing procedure.
注意，SQL PL 中适当的异常处理要求每个过程有一个错误处理程序，这个错误处理程序应该可以很容易地告诉我们出错的过程。