OSB: Looping through XML Structure

Question

How could I loop through a WHOLE XML structure and check the contents of each node to determine whether it is a dateTime stamp?
I attempted a for-each loop in OSB but I could not get my expected output
A sample xml structure may look like this
<ebo:CreateQuoteEBM >
    <ebo:DataArea>
      <ebo:CreateQuote>
        <ebo:Custom>
          <chubCommon:Quote>
              <chubCommon:ItemDetail>
                     <chub:Name>Test</chub:Name>
                    <chub:Value>20130527T12:02:13<chub:Value>
              </chubCommon:ItemDetail>
              <chubCommon:Reference>
                  <chubCommon:ReferenceQualifier>Bid Submit Date</chubCommon:ReferenceQualifier>
                  <chubCommon:Value>20130527T12:02:13</chubCommon:Value>
                </chubCommon:Reference>
          </chubCommon:Quote>
        </ebo:Custom>
      </ebo:CreateQuote>
    </ebo:DataArea>
  </ebo:CreateQuoteEBM>
Bonus: If it is a dateTime stamp convert into a date
Thanks!

Answer 1

You can use FLOWR loop to loop though this, and then for each node check if conditon is (fn:data() is true and fn:matches()) to check if the node is of datetime type. fn:data() will give you the if the xml node has some data and then using fn:matches() you can compare it with the datetime pattern, You can use a regex pattern to compare 20130527T12:02:13 . For converting this date use fn:substring() get the data before "T" and use fucntion similar to this functx:mmddyyyy-to-date for converting to date.For converting to date you can also use substring to extract the data from node and then use below fucntion to convert to date.
declare function functx:date
  ( $year as xs:anyAtomicType ,
  $month as xs:anyAtomicType ,
  $day as xs:anyAtomicType ) as xs:date {
  xs:date(
  concat(
  functx:pad-integer-to-length(xs:integer($year),4),'-',
  functx:pad-integer-to-length(xs:integer($month),2),'-',
  functx:pad-integer-to-length(xs:integer($day),2)))