From 391c7935ae40f60672b88312b02151c3f941796e Mon Sep 17 00:00:00 2001
From: Andrew Branson <andrew.branson@cern.ch>
Date: Mon, 31 Mar 2014 16:18:42 +0200
Subject: Outcome.setFieldByXPath (refs #167)

---
 .../com/c2kernel/persistency/outcome/Outcome.java   | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/main/java/com/c2kernel/persistency/outcome/Outcome.java b/src/main/java/com/c2kernel/persistency/outcome/Outcome.java
index f25922c..5604332 100644
--- a/src/main/java/com/c2kernel/persistency/outcome/Outcome.java
+++ b/src/main/java/com/c2kernel/persistency/outcome/Outcome.java
@@ -12,6 +12,7 @@ import javax.xml.xpath.XPathExpressionException;
 import javax.xml.xpath.XPathFactory;
 
 import org.w3c.dom.Document;
+import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 import org.w3c.dom.Text;
 import org.w3c.dom.bootstrap.DOMImplementationRegistry;
@@ -118,11 +119,20 @@ public class Outcome implements C2KLocalObject {
     }
 
     public void setData(Document data) {
-        mData = serialize(data, false);
         dom = data;
+        mData = null;
     }
+    
+    public void setFieldByXPath(String xpath, String data) throws XPathExpressionException {
+    	Node field = getNodeByXPath(xpath);
+    	field.setNodeValue(data);
+    }
+
 
     public String getData() {
+    	if (mData == null && dom != null) {
+    		mData = serialize(dom, false);
+    	}
         return mData;
     }
 
@@ -158,7 +168,7 @@ public class Outcome implements C2KLocalObject {
      * @return a DOM Document
      */
     public Document getDOM() {
-    	if (dom == null)
+    	if (dom == null && mData != null)
         try {
             synchronized (parser) {
                 dom = parser.parse(new InputSource(new StringReader(mData)));
@@ -191,6 +201,13 @@ public class Outcome implements C2KLocalObject {
     	return (NodeList)expr.evaluate(getDOM(), XPathConstants.NODESET);
     	
     }
+    
+    public Node getNodeByXPath(String xpathExpr) throws XPathExpressionException {
+    	
+    	XPathExpression expr = xpath.compile(xpathExpr);
+    	return (Node)expr.evaluate(getDOM(), XPathConstants.NODE);
+    	
+    }
 
     static public String serialize(Document doc, boolean prettyPrint)
     {
-- 
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