From ff95d49d4ae7b8d22cef002e84fb7c5673416cde Mon Sep 17 00:00:00 2001
From: hns <hannesw@gmail.com>
Date: Thu, 27 Feb 2003 13:06:43 +0000
Subject: [PATCH] Make getVirtualMapping() aware of prototyped collections,
 i.e. the application's DbMapping is returned instead of a synthetic
 virtualMapping.

---
 src/helma/objectmodel/db/Relation.java | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/helma/objectmodel/db/Relation.java b/src/helma/objectmodel/db/Relation.java
index 7554356a..c29a08c1 100644
--- a/src/helma/objectmodel/db/Relation.java
+++ b/src/helma/objectmodel/db/Relation.java
@@ -344,9 +344,20 @@ public final class Relation {
     }
 
 
+    /**
+     *  get a DbMapping to use for virtual aka collection nodes.
+     */
     public DbMapping getVirtualMapping () {
+	// return null unless this relation describes a virtual/collection node.
 	if (!virtual)
 	    return null;
+	// if the collection node is prototyped, return the app's DbMapping 
+	// for that prototype
+	if (prototype != null) {
+	    return otherType;
+	}
+	// create a synthetic DbMapping that describes how to fetch the 
+	// collection's child objects.
 	if (virtualMapping == null) {
 	    virtualMapping = new DbMapping (ownType.app);
 	    virtualMapping.subRelation = getVirtualSubnodeRelation ();