public interface URIChecker
A user-supplied implementation can be written either from scratch, or by reference to the
boolean isValidURI(CharSequence value)
This method is called during schema validation, and when casting string to xs:anyURI. It is not used when the xs:anyURI type is used as a return value from methods such as namespace-uri() or namespace-uri-from-QName() - in such cases no checking is applied to the name.
value- the string to be checked
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