Goal 

The XML Parser uses XPath to extract field from a complex XML Event. This is generally used in conjunction with the XML Source Reader. The XML Source Reader will provide individual events to the XML Parser and the XML Parser is responsible for extracting fields from the event and mapping them to output schema. 

E.g. Assume you have a XML Event that looks as follows:

<employee>
  <name>
   <first>Joltie</first>
   <last>Root</last>
  </name>
  <address>
   <street> 180, Mars Ave </street>
   <city> Marsville </city>
   <state> Marscity </state>
   <country> M.A.R.S </country>
   <coordinates>
     <lat>89</lat>
     <long>117</long>
   </coordinate>
  </address>
  <dob>
    <day>1</day>
    <month>Jan</month>
    <year>2177</year>
  </dob>
</employee>

User wants to extract following fields from the XML event.

• first
• last
• lat
• long
• dob year

User uses the following XPath to extract those fields

/employee/name/first
/employee/name/last
/employee/address/coordinates/lat
/employee/address/coordinates/long
/employee/dob/year

Checklist

• User stories documented 
• User stories reviewed 
• Design documented 
• Design reviewed 
• Feature merged 
• Examples and guides 
• Integration tests 
• Documentation for feature 
• Short video demonstrating the feature

Use-case