The primitive type xs:hexBinary
represents binary data as a sequence of binary octets. The type xs:hexBinary
uses hexadecimal encoding, where each binary octet is a two-character hexadecimal number. Digits 0 through 9 and lowercase and uppercase letters A through F are permitted. For example, 0CD7
and 0cd7
are two equal xs:hexBinary
representations consisting of two octets.
Table B-16 lists some values of the xs:hexBinary
type.
Values of type xs:hexBinary
can be cast to and from xs:base64Binary
, xs:string
, and xs:untypedAtomic
. When cast to xs:string
, xs:hexBinary
values are converted to their canonical representation, which uses only uppercase letters.
Two xs:hexBinary
values can be compared using the value comparison operators =
and !=
. Two xs:hexBinary
values are considered equal if their canonical representations are equal. This means that the case of the letters is not taken into account in the comparison. An xs:hexBinary
value is never equal to an xs:base64Binary
value, nor is it equal to an xs:string
containing the same characters.
Because the type is not ordered, two xs:hexBinary
values cannot be compared using the <
, <=
, >
, or >=
operators.
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