diff --git a/org.talend.librariesmanager/resources/java/routines/system/Document.java b/org.talend.librariesmanager/resources/java/routines/system/Document.java
index e99d30871c..b5017f408f 100644
--- a/org.talend.librariesmanager/resources/java/routines/system/Document.java
+++ b/org.talend.librariesmanager/resources/java/routines/system/Document.java
@@ -63,6 +63,13 @@ public class Document {
         org.dom4j.XPath xpathObjectForDoc = document.createXPath(loopXPath);
         xpathObjectForDoc.setNamespaceURIs(nsMapping);
         java.util.List<org.dom4j.tree.AbstractNode> nodes = xpathObjectForDoc.selectNodes(document);
+        if(nodes.size()==0) {
+        	//set root as loop when no loop nodes
+        	loopXPath = resetLoop(loopXPath,lookupInfo,xpathOfResults,xpathToTypeMap,xpathToPatternMap);
+        	xpathObjectForDoc = document.createXPath(loopXPath);
+        	xpathObjectForDoc.setNamespaceURIs(nsMapping);
+        	nodes = xpathObjectForDoc.selectNodes(document);
+        }
         for (org.dom4j.tree.AbstractNode node : nodes) {
             boolean reject = false;
             // lookup action
@@ -120,5 +127,59 @@ public class Document {
 		}
 		return result;
     }
-
+    
+    private String resetLoop(String loop, Map<String, Object> lookupInfo,
+    		Map<String, String> xpathOfResults, Map<String, String> xpathToTypeMap, Map<String, String> xpathToPatternMap) {
+    	
+    	resetMapRelativeXpathKey(lookupInfo,loop);
+    	resetMapRelativeXpathKey(xpathToTypeMap,loop);
+    	resetMapRelativeXpathKey(xpathToPatternMap,loop);
+    	resetMapRelativeXpathValue(xpathOfResults,loop);
+    	
+    	int index = loop.indexOf("/",1);
+    	return loop.substring(0, index>0 ? index : loop.length());
+    }
+    
+    private void resetMapRelativeXpathKey(Map<String, ? extends Object> source,String loop) {
+    	Map content = new HashMap();
+    	for(String key : source.keySet()) {
+    		String newKey = resetRelativeXPath(loop,key);
+    		content.put(newKey, source.get(key));
+    	}
+    	source.clear();
+    	source.putAll(content);
+    }
+    
+    private void resetMapRelativeXpathValue(Map<String,String> source,String loop) {
+    	Map content = new HashMap();
+    	for(String key : source.keySet()) {
+    		String value = source.get(key);
+    		String newValue = resetRelativeXPath(loop,value);
+    		content.put(key, newValue);
+    	}
+    	source.clear();
+    	source.putAll(content);
+    }
+    
+    private String resetRelativeXPath(String loop,String relativePath) {
+    	String absolutePath = loop;
+    	for(String step : relativePath.split("/")) {
+			if("..".equals(step)) {
+				absolutePath = absolutePath.substring(0,absolutePath.lastIndexOf("/"));
+			} else if(".".equals(step)){
+				//do nothing
+			} else if(!"".equals(step)){
+				absolutePath += "/" + step;
+			}
+		}
+		String result = null;
+		int index = absolutePath.indexOf("/", 1);
+		if(index<0) {
+			result = ".";
+		} else {
+			result = absolutePath.substring(index+1);
+		}
+		return result;
+    }
+    
 }