"gYear", "gMonth" and "gDay" Datatypes

XSD Tutorials - Herong's Tutorial Examples - Version 5.10, by Dr. Herong Yang

XSD Tutorials - Herong's Tutorial Examples

∟"gYear", "gMonth" and "gDay" Datatypes

This section describes the built-in primitive datatype, 'gYear', 'gMonth' and 'gDay', that represents years, months and days in Gregorian calendar. Leading and trailing whitespaces are allowed and trimmed. Timezone offset is optional.

XSD 1.1 also provides 3 built-in datatypes, "gYear", "gMonth" and "gDay", to cover 3 properties within a "date" value with these rules:

The value space of "gYear" is all values of the "year" property representing all possible years in Gregorian calendar.
The lexical space of "gYear" is all possible "year" values represented in (year)(timezoneOffset)? patten.
The value space of "gMonth" is all values of the "month" property representing all possible months in a Gregorian calendar year.
The lexical space of "gMonth" is all possible "gMonth" values represented in --(month)(timezoneOffset)? patten.
The value space of "gDay" is all values of the "day" property representing all possible days in a Gregorian calendar month.
The lexical space of "gDay" is all possible "gDay" values represented in ---(day)(timezoneOffset)? patten.
"timezoneOffset" property is optional and no default timezone is defined.
Leading and trailing whitespaces allowed and trimmed.

To verify these rules, I wrote this simple XSD document that uses "gYear", "gMonth" and "gDay" datatypes to declare XML elements:

<?xml version="1.1"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<!-- gYear_gMonth_gDay_datatype_test.xsd
 - Copyright (c) 2013, HerongYang.com, All Rights Reserved.
-->
<xs:element name="GYear_GMonth_GDay_Datatype_Test">
  <xs:complexType>
    <xs:sequence>
      <xs:element name="GYear" type="xs:gYear" 
         maxOccurs="unbounded"/>
      <xs:element name="GMonth" type="xs:gMonth"
         maxOccurs="unbounded"/>
      <xs:element name="GDay" type="xs:gDay"
         maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>
</xs:schema>

Here is a sample XML document that can be used to test these declarations:

<?xml version="1.1"?>
<!-- gYear_gMonth_gDay_datatype_test.xml
 - Copyright (c) 2013, HerongYang.com, All Rights Reserved.
-->
<GYear_GMonth_GDay_Datatype_Test>

<!-- 3 valid "GYear" elements -->
  <GYear>    0101    </GYear>
  <GYear>   -1234567   </GYear>
  <GYear>    2013-05:00    </GYear>

<!-- 2 invalid "GYear" elements -->
  <GYear>    101    </GYear>
  <GYear>    2147483648    </GYear>

<!-- 2 valid "GMonth" elements -->
  <GMonth>   --01    </GMonth>
  <GMonth>   --12-05:00   </GMonth>

<!-- 2 invalid "GMonth" elements -->
  <GMonth>   --1    </GMonth>
  <GMonth>   --13    </GMonth>

<!-- 2 valid "GDay" elements -->
  <GDay>    ---01    </GDay>
  <GDay>    ---31-05:00   </GDay>

<!-- 2 invalid "GDay" elements -->
  <GDay>    ---1    </GDay>
  <GDay>    ---32    </GDay>
</GYear_GMonth_GDay_Datatype_Test>

When validating this XML document with my XsdSchemaValidator.java program presented earlier in the book, I get 6 groups of errors for 6 invalid XML elements:

c:\Progra~1\Java\jdk1.7.0_07\bin\java XsdSchemaValidator 
   gYear_gMonth_gDay_datatype_test.xsd 
   gYear_gMonth_gDay_datatype_test.xml
   
Error:
   Line number: 13
   Column number: 29
   Message: cvc-datatype-valid.1.2.1: '101' is not a valid value for 
   'gYear'. (Minimum 4 digits needed)

Error:
   Line number: 13
   Column number: 29
   Message: cvc-type.3.1.3: The value '    101    ' of element 'GYear'
   is not valid.

Error:
   Line number: 14
   Column number: 36
   Message: cvc-datatype-valid.1.2.1: '2147483648' is not a valid 
   value for 'gYear'. (Value out of "int" range)

Error:
   Line number: 14
   Column number: 36
   Message: cvc-type.3.1.3: The value '    2147483648    ' of element
   'GYear' is not valid.

Error:
   Line number: 21
   Column number: 30
   Message: cvc-datatype-valid.1.2.1: '--1' is not a valid value for
   'gMonth'. (Minimum 2 digits needed)

Error:
   Line number: 21
   Column number: 30
   Message: cvc-type.3.1.3: The value '   --1    ' of element 'GMonth'
   is not valid.

Error:
   Line number: 22
   Column number: 31
   Message: cvc-datatype-valid.1.2.1: '--13' is not a valid value for
   'gMonth'. (Value out of "month" range)

Error:
   Line number: 22
   Column number: 31
   Message: cvc-type.3.1.3: The value '   --13    ' of element 
   'GMonth' is not valid.

Error:
   Line number: 29
   Column number: 28
   Message: cvc-datatype-valid.1.2.1: '---1' is not a valid value for
   'gDay'. (Minimum 2 digits needed)

Error:
   Line number: 29
   Column number: 28
   Message: cvc-type.3.1.3: The value '    ---1    ' of element 'GDay'
   is not valid.

Error:
   Line number: 30
   Column number: 29
   Message: cvc-datatype-valid.1.2.1: '---32' is not a valid value for
   'gDay'. (Value out of "day" range)

Error:
   Line number: 30
   Column number: 29
   Message: cvc-type.3.1.3: The value '    ---32    ' of element 
   'GDay' is not valid.

Failed with errors: 12

Last update: 2013.

Table of Contents

About This Book

Introduction to XML Schema

XML Editor and Schema Processor - XMLPad

Java API for XML Processing - JAXP

JAXP - XML Schema (XSD) Validation

Xerces2 Java Parser - Java API of XML Parsers

Using Xerces2 Java API

XML Schema Language - Basics

Introduction of XSD Built-in Datatypes

"string" and Its Derived Datatypes