XMLMessages

XMLMessages is a static utility class for consistent error reporting across xml-toolkit.

It centralizes:

• error code definitions (human-readable templates),
• message formatting with argument substitution,
• error object creation with debug metadata.

Error Code Vocabulary

All messages are stored in XMLMessages.VOCABULARY — a Map<code, template>.

Prefixes

Prefix	Scope	Example codes
XML-	Core XML parsing	XML-00001, XML-00002, XML-00003
XSD-	XML Schema definitions	XSD-00001, XSD-00002
XVC-	Validation: structure/constraints	XVC-00001 … XVC-00005
XVS-	Validation: simple type values	XVS-00001 … XVS-00041

Selected Messages

XML Parsing (XML-*)

Code	Template	When raised
XML-00001	maxLength=%i exceeded	XMLLexer encountered a lexeme longer than maxLength option
XML-00002	Unbalanced end element	</tag> without matching <tag>
XML-00003	Unmatched end element, %s expected	</wrong> when </expected> was anticipated

Schema Definitions (XSD-*)

Code	Template	When raised
XSD-00001	Unknown namespace: %s	Referenced namespace not found in loaded schemas
XSD-00002	The element %s is not found in %s	Element used but not declared in schema

Structural Validation (XVC-*)

Code	Template	When raised
XVC-00001	No nested elements allowed inside %s	Complex type with simpleContent received child elements
XVC-00002	%s is unexpected here; should be %s	Element order violates xs:sequence/xs:choice
XVC-00003	Unknown attribute: %s	Attribute not declared in schema
XVC-00004	The attribute "%s" must have the value "%s", not "%s"	Fixed-value attribute mismatch
XVC-00005	Missing required attribute: "%s"	Required attribute absent

Simple Type Validation (XVS-*)

Code	Template	When raised
XVS-00001	The value "%s" doesn't match the pattern %s	xs:pattern facet mismatch
XVS-00003	The value '%s' is not in list: %s	xs:enumeration facet mismatch
XVS-00004–006	Length constraint violations	xs:minLength/maxLength/length
XVS-00007–0010	Range constraint violations	xs:minInclusive/maxExclusive etc.
XVS-00011–00012	Boolean parsing errors	Invalid true/false/1/0
XVS-00013–00019	Decimal parsing errors	Invalid format, digit count, precision
XVS-00020–00021	Float parsing errors	Invalid floating-point syntax
XVS-00022–00041	Date/time parsing errors	Invalid date, time, timezone, separators