DATAJDBC-150 - Provides better error message when execution of a DbAction fails.

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

@@ -86,7 +86,26 @@ public abstract class DbAction<T> {
 		return new DeleteAll<>(type, propertyPath, dependingOn);
 	}
 
-	abstract void executeWith(Interpreter interpreter);
+	/**
+	 * Executing this DbAction with the given {@link Interpreter}.
+	 *
+	 * @param interpreter the {@link Interpreter} responsible for actually executing the {@link DbAction}.
+	 */
+	void executeWith(Interpreter interpreter) {
+
+		try {
+			doExecuteWith(interpreter);
+		} catch (Exception e) {
+			throw new DbActionExecutionException(this, e);
+		}
+	}
+
+	/**
+	 * Executing this DbAction with the given {@link Interpreter} without any exception handling.
+	 *
+	 * @param interpreter the {@link Interpreter} responsible for actually executing the {@link DbAction}.
+	 */
+	protected abstract void doExecuteWith(Interpreter interpreter);
 
 	/**
 	 * {@link InsertOrUpdate} must reference an entity.
@@ -113,7 +132,7 @@ public abstract class DbAction<T> {
 		}
 
 		@Override
-		void executeWith(Interpreter interpreter) {
+		protected void doExecuteWith(Interpreter interpreter) {
 			interpreter.interpret(this);
 		}
 	}
@@ -130,7 +149,7 @@ public abstract class DbAction<T> {
 		}
 
 		@Override
-		void executeWith(Interpreter interpreter) {
+		protected void doExecuteWith(Interpreter interpreter) {
 			interpreter.interpret(this);
 		}
 	}
@@ -159,7 +178,7 @@ public abstract class DbAction<T> {
 		}
 
 		@Override
-		void executeWith(Interpreter interpreter) {
+		protected void doExecuteWith(Interpreter interpreter) {
 			interpreter.interpret(this);
 		}
 	}
@@ -176,7 +195,7 @@ public abstract class DbAction<T> {
 		}
 
 		@Override
-		void executeWith(Interpreter interpreter) {
+		protected void doExecuteWith(Interpreter interpreter) {
 			interpreter.interpret(this);
 		}
 	}

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

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 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;
+
+/**
+ * Exception thrown when during the execution of a {@link DbAction} an exception gets thrown. Provides additional
+ * context information about the action and the entity.
+ *
+ * @author Jens Schauder
+ */
+public class DbActionExecutionException extends RuntimeException {
+	public DbActionExecutionException(DbAction<?> action, Throwable cause) {
+		super( //
+				String.format("Failed to execute %s for instance %s of type %s with path %s", //
+						action.getClass().getSimpleName(), //
+						action.getEntity(), //
+						action.getEntityType(), //
+						action.getPropertyPath().toDotPath() //
+				), //
+				cause);
+	}
+}