BUG-576: fixed possible null pointer dereference in BindingGeneratorImpl

Possible null pointer dereference of resultTOBuilder.

Change-Id: I5f50f1ca0fb19d7310e5278f8f6915e6dd180723
Signed-off-by: Martin Vitez <mvitez@cisco.com>

diff --git a/code-generator/binding-generator-impl/src/main/java/org/opendaylight/yangtools/sal/binding/generator/impl/BindingGeneratorImpl.java b/code-generator/binding-generator-impl/src/main/java/org/opendaylight/yangtools/sal/binding/generator/impl/BindingGeneratorImpl.java
index befe3e88e02c494e48b287d8089cf2f05eb8fd08..1070f4c33c26797dcc82f72e7be0a6a930d92a32 100644 (file)
--- a/code-generator/binding-generator-impl/src/main/java/org/opendaylight/yangtools/sal/binding/generator/impl/BindingGeneratorImpl.java
+++ b/code-generator/binding-generator-impl/src/main/java/org/opendaylight/yangtools/sal/binding/generator/impl/BindingGeneratorImpl.java
@@ -30,7 +30,6 @@ import static org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.findP
 import com.google.common.base.Splitter;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Sets;
-
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -39,7 +38,6 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-
 import org.opendaylight.yangtools.binding.generator.util.BindingGeneratorUtil;
 import org.opendaylight.yangtools.binding.generator.util.BindingTypes;
 import org.opendaylight.yangtools.binding.generator.util.ReferencedTypeImpl;
@@ -1918,11 +1916,12 @@ public class BindingGeneratorImpl implements BindingGenerator {
             genTOBuilders.addAll(types);
 
             GeneratedTOBuilder resultTOBuilder = null;
-            if (!types.isEmpty()) {
-                resultTOBuilder = types.remove(0);
-                for (GeneratedTOBuilder genTOBuilder : types) {
-                    resultTOBuilder.addEnclosingTransferObject(genTOBuilder);
-                }
+            if (types.isEmpty()) {
+                throw new IllegalStateException("No GeneratedTOBuilder objects generated from union " + typeDef);
+            }
+            resultTOBuilder = types.remove(0);
+            for (GeneratedTOBuilder genTOBuilder : types) {
+                resultTOBuilder.addEnclosingTransferObject(genTOBuilder);
             }
 
             final GeneratedPropertyBuilder genPropBuilder = resultTOBuilder.addProperty("value");