Groovy data mapping from XML to Java Lists/Maps

xml2map.groovy

// no need to use builder here, just raw Groovy map syntax

//get DOMCategory to get access to GPATH style operations like getNode getNodeAt etc.
import au.com.sixtree.java.esb.mapper.DOMCategory;

//declare a java.util.Map to hold results
def result = [:]
//get input root element
def _in = payload.documentElement
use(DOMCategory) {
	/*using DOMCategory get access to various xml elements, this is like calling
	 *_in.bookId.text() is equivalent to responseDoc.getDocumentElement().getElementsByTagName("book").item(0).getFirstChild().getTextContent());
	 *result.bookId is equivalent to result.put("bookId" , "123456") in Java
	 */
	
	result.bookId = _in.bookId.text()
	
	//Using  ?: Java operator to create an if else condition
	/*
	 * Set results("inventoryStatus") value only if the inbound element has a non-empty value
	 * One of the setter calls a custom XREF method (ValueCrossReferenceHelper.lookup(String args...)) to retrieve the corresponding system value
	 * */
	(_in.inventoryStatus.text() != null && _in.inventoryStatus.text()!="")?(result.inventoryStatus = au.com.sixtree.esb.common.crossreferenceclient.ValueCrossReferenceHelper.lookup("Book Inventory Status", "Outbound_System_Name", _in.inventoryStatus.text() , "Inbound_System_Name")): (result.inventoryStatus = "");
	
}
return result