DATAJDBC-162 - Prevent NPE for missing PropertyPath in DbActionExecutionException.

src/main/java/org/springframework/data/jdbc/core/conversion/DbActionExecutionException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 the original author or authors.
+ * Copyright 2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,7 +28,7 @@ public class DbActionExecutionException extends RuntimeException {
 						action.getClass().getSimpleName(), //
 						action.getEntity(), //
 						action.getEntityType(), //
-						action.getPropertyPath().toDotPath() //
+						action.getPropertyPath() == null ? "" : action.getPropertyPath().toDotPath() //
 				), //
 				cause);
 	}

src/test/java/org/springframework/data/jdbc/core/conversion/DbActionExecutionExceptionTest.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.jdbc.core.conversion;
+
+import static org.mockito.Mockito.*;
+
+import org.junit.Test;
+
+/**
+ * @author Jens Schauder
+ */
+public class DbActionExecutionExceptionTest {
+
+	@Test // DATAJDBC-162
+	public void constructorWorksWithNullPropertyPath() {
+
+		DbAction<?> action = mock(DbAction.class);
+		new DbActionExecutionException(action, null);
+	}
+
+}