How to Extract particular field from a string ( Mapping)

Question

how to exteract the particular field from the given string:
ProcessEmp this element has a below string subfields.
<ProcessEmp>&lt;?xml version="1.0" encoding="utf-8" standalone="no"?&gt;
&lt;Employee PersonnelNumber="11111" FirstName="String" MiddleName="String" LastName="String" Department="String" Group="" SapUserID="10flname" EmailAddress="[email protected]" DefaultPassword="*" Status="Success" /&gt;</ProcessEmp>
how to extract only PersonalNumber, department, EmailAddress from above ProcessEmp into 3 diff fields.
Thanks
dhanush.

Answer 1

Hi,
You are receiving XML message within a field. To access a particular field from that XML message, you could create a User Defined Function, as suggested by many already.
You could write UDF using some of the String operation functions. This could include following:
1. If you need to access field Employee PersonnelNumber, you could get last index of that within string using function lastIndexOf(String str). Pass string "Employee PersonnelNumber="" for this function.
2. This function would return an index of rightmost occurance of this string.
3. after this you could get the index of next occurance of ", as the value of field is within quotes. You could use function indexOf(int ch, int fromIndex) for getting the same. You would pass Character as " and index as the one received by previous function.
4. Now you have index for starting and ending point of value string for desired field.
5. After this you could use substring(int beginIndex, int endIndex) function by passing first and second index values to retrieve the needed string, which contains value of field.
Hope this would be helful.
Thanks,
Bhavish
Reward points if comments found helpful:-)