diff -r a10844a9914d -r a60f8b6b1d32 hgcacheproxymodel/tsrc/unit/dataproviderhelper.cpp
--- a/hgcacheproxymodel/tsrc/unit/dataproviderhelper.cpp	Fri Sep 17 15:55:58 2010 +0300
+++ b/hgcacheproxymodel/tsrc/unit/dataproviderhelper.cpp	Wed Oct 06 14:53:41 2010 +0300
@@ -372,6 +372,11 @@
     mObserverDataUpdated.append(p);
 }
 
+bool DataProviderHelper::isCached(int idx) const
+{
+    return HgDataProviderModel::isCached(idx);
+}
+
 void DataProviderHelper::slotDataUpdated(QModelIndex from,QModelIndex to)
 {
     QPair< int, int > p;