- 创建表达式的方法:激活某层的某个属性,选择菜单“动画(Animation)>添加表达式(Add Expression)”或者(快捷键“Alt+鼠标左键点击该属性的关键帧记录器”),这时候有一句默认的表达式语句出现在表达式输入框内。
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将这些属性的SQL表达式添加到SELECT列表中作为列。
Add the SQL expressions generated for each of these attributes as columns in the SELECT list.
由于这是自定义转换,因此需要添加自定义XPath表达式。
Because this is a custom transformation, you need to add a custom XPath expression.
如清单7所示,添加XPath表达式到异常消息将产生更详细的对验证失败的描述,这样大大方便了发现问题。
Adding XPath expressions to the exception message, as shown in Listing 7, results in a more detailed description of the validation failure, which greatly simplifies locating the problem.
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