This section describes a tutorial example of incorrect usages of 'redefine' components on changing existing datatypes.
One common error on using "redefine" components is that the redefined datatype uses a name different than the base datatype.
Here is a sample schema document, address_redefine_error.xsd, that has this type of errors:
Here is the error message reported by the schema checker program, XsdSchemaChecker.java:
>java XsdSchemaChecker address_redefine_error.xsd
Line number: 18
Column number: 41
Message: src-redefine.5.b.d: 'extension' does not have a 'base'
attribute that refers to the redefined element,
',addressOverseaType'. <complexType> children of <redefine>
elements must have <extension> or <restriction> descendants,
with 'base' attributes that refer to themselves.
Failed with 1 errors.