First, convert your constraint model — presumably a file on disk somewhere — into a format that JAXP can use.
首先，将约束模型(可能是某个磁盘上的文件)转化为JAXP可以使用的格式。
2
The code in Listing 3 shows how the constraint groups are set up in the schema group file.
清单3中的代码展示了约束组在模式组文件中是如何设置的。
3
This article includes a zip file (see the download) that has two examples of transforming NIEM XML Constraint XML Schemas directly into an XForms application.