Using the XML API to perform operations

You can use the IBM® XML Application Programming Interface (API) to perform operations that use the new and updated W3C XML standards.

Before you begin

Limitations of the processor:
  • When using the namespace axis, only the namespaces declared on the current node are accessible through the namespace axis (rather than all of the namespaces that are in scope for the current node) if the input document supplied is a StreamSource, SAXSource, or StAXSource.
  • When evaluating some string functions and operations, the processor might not handle Unicode characters with code points above #xFFFF correctly; it might incorrectly treat the surrogate pair in the UTF-16 encoding of the character as two separate characters.
  • Whitespace text nodes might not be stripped from elements that have complex type with element-only content. When matching children of such an element, use a sequence type that matches only elements such as element() to avoid processing these text nodes.
  • The column number reported in an error message relating to an operator expression might not point to the operand that is actually in error. Consider both operands when determining the cause of the error.
  • Using a variable declared in an XQuery typeswitch clause as an operand in an arithmetic expression might cause an error.
    When using the variable declared in an XQuery typeswitch clause in an arithmetic expression such as in the following example, the processor might incorrectly report a type error.
    typeswitch (.)
    case $a as xs:integer return ($a + 1)
    default return 17
    To work around this limitation, cast the variable to the expected type. For example:
    typeswitch (.)
    case $a as xs:integer return (($a cast as xs:integer) + 1)
    default return 17

Procedure




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Last updatedLast updated: Jan 30, 2014 9:17:32 AM CST
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