Dump the modification which fails to produce a root node

[yangtools.git] / yang / yang-data-impl / src / main / java / org / opendaylight / yangtools / yang / data / impl / schema / tree / AbstractDataTreeTip.java

diff --git a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/AbstractDataTreeTip.java b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/AbstractDataTreeTip.java
index b2b132d1369485d14f6585afdeaf7d2f1d46a96b..9b1ef2d2ef50148aacbf47488c95ae4f718fe0d0 100644 (file)
--- a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/AbstractDataTreeTip.java
+++ b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/AbstractDataTreeTip.java
@@ -51,7 +51,7 @@ abstract class AbstractDataTreeTip implements DataTreeTip {
 
         final Optional<TreeNode> newRoot = m.getStrategy().apply(m.getRootModification(),
             Optional.<TreeNode>of(currentRoot), m.getVersion());
-        Preconditions.checkState(newRoot.isPresent(), "Apply strategy failed to produce root node");
+        Preconditions.checkState(newRoot.isPresent(), "Apply strategy failed to produce root node for modification %s", modification);
         return new InMemoryDataTreeCandidate(PUBLIC_ROOT_PATH, root, currentRoot, newRoot.get());
     }
 }