Make ConstraintMetaDefition attributes Optional

[yangtools.git] / yang / yang-model-util / src / main / java / org / opendaylight / yangtools / yang / model / util / PatternConstraintImpl.java

diff --git a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/PatternConstraintImpl.java b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/PatternConstraintImpl.java
index 742d2d1e0d2e50fdd574d7bc6d12701e1f536cb3..bb10b18389ae4f09244e78e234d15b53c4d4b81d 100644 (file)
--- a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/PatternConstraintImpl.java
+++ b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/PatternConstraintImpl.java
@@ -57,13 +57,13 @@ final class PatternConstraintImpl implements PatternConstraint, Immutable {
     }
 
     @Override
-    public String getErrorAppTag() {
-        return errorAppTag;
+    public Optional<String> getErrorAppTag() {
+        return Optional.ofNullable(errorAppTag);
     }
 
     @Override
-    public String getErrorMessage() {
-        return errorMessage;
+    public Optional<String> getErrorMessage() {
+        return Optional.ofNullable(errorMessage);
     }
 
     @Override