RelaxNG Validation¶

RelaxNG is a schema language for XML that is simpler and more expressive than XML Schema for many use cases.

Loading a Schema¶

# From a file
schema = XML::RelaxNG.new('/path/to/schema.rng')

# From a document
schema_doc = XML::Document.file('schema.rng')
schema = XML::RelaxNG.document(schema_doc)

Validating¶

doc = XML::Parser.file('data.xml').parse

begin
  doc.validate_relaxng(schema)
rescue XML::Error => e
  puts e.message
end

The validate_relaxng method returns true on success or raises XML::Error on failure.