) to navigate to next page<let> Element
- The <let> element is used to create variables.
- You can create a variable with global scope by positioning the <let> element at the top of the schema:
- <?xml version="1.0"?>
- <sch:schema xmlns:sch="http://purl.oclc.org/dsdl/schematron">
- <sch:let name="foo" value=" 'Hello World' " />
- ...
- </sch:schema>
- The variable foo has the value 'Hello World'.
- foo has global scope -- it can be used anywhere in the Schema.
- A variable is used by preceding the variable name with a $ symbol, e.g. $foo
<let> Element (cont.)
- You can create a variable that can be used only within a <pattern> by positioning the <let> element at the top of the <pattern>
- You can create a variable that can be used only within a <rule> by positioning the <let> element at the top of the <rule>
Variables: An ISO Capability
- You can only use variables in ISO Schematron schemas.
- Variables are not available in
Schematron 1.5
Example
- View the check-classifications.sch (example11 folder)
- It creates a variable at the top of the schema, and then uses the variable in each of the three rules.
- Use Oxygen XML (version 8.2 or later) to validate valid-document.xml and invalid-document.xml against the schema