Minor code refactoring and improvements.

[controller.git] / opendaylight / sal / yang-prototype / code-generator / yang-model-parser-impl / src / main / java / org / opendaylight / controller / yang / parser / builder / impl / ExtensionBuilder.java

diff --git a/opendaylight/sal/yang-prototype/code-generator/yang-model-parser-impl/src/main/java/org/opendaylight/controller/yang/parser/builder/impl/ExtensionBuilder.java b/opendaylight/sal/yang-prototype/code-generator/yang-model-parser-impl/src/main/java/org/opendaylight/controller/yang/parser/builder/impl/ExtensionBuilder.java
index a0ee47f7b8d13a7fc7540e4480fac53f7c48abeb..764d2bf8dba0b445bdb95978d562653b68a0584e 100644 (file)
--- a/opendaylight/sal/yang-prototype/code-generator/yang-model-parser-impl/src/main/java/org/opendaylight/controller/yang/parser/builder/impl/ExtensionBuilder.java
+++ b/opendaylight/sal/yang-prototype/code-generator/yang-model-parser-impl/src/main/java/org/opendaylight/controller/yang/parser/builder/impl/ExtensionBuilder.java
@@ -37,11 +37,13 @@ public final class ExtensionBuilder extends AbstractSchemaNodeBuilder {
             instance.setStatus(status);
 
             // UNKNOWN NODES
-            final List<UnknownSchemaNode> unknownNodes = new ArrayList<UnknownSchemaNode>();
-            for (UnknownSchemaNodeBuilder un : addedUnknownNodes) {
-                unknownNodes.add(un.build());
+            if (unknownNodes == null) {
+                unknownNodes = new ArrayList<UnknownSchemaNode>();
+                for (UnknownSchemaNodeBuilder un : addedUnknownNodes) {
+                    unknownNodes.add(un.build());
+                }
+                Collections.sort(unknownNodes, Comparators.SCHEMA_NODE_COMP);
             }
-            Collections.sort(unknownNodes, Comparators.SCHEMA_NODE_COMP);
             instance.setUnknownSchemaNodes(unknownNodes);
 
             isBuilt = true;