Don't pass null exception translation result into jOOQ

Closes gh-25717

Author: wilkinsona

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jooq/JooqExceptionTranslator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -80,10 +80,12 @@ private SQLExceptionTranslator getTranslator(ExecuteContext context) {
 	private void handle(ExecuteContext context, SQLExceptionTranslator translator, SQLException exception) {
 		DataAccessException translated = translate(context, translator, exception);
 		if (exception.getNextException() == null) {
-			context.exception(translated);
+			if (translated != null) {
+				context.exception(translated);
+			}
 		}
 		else {
-			logger.error("Execution of SQL statement failed.", translated);
+			logger.error("Execution of SQL statement failed.", (translated != null) ? translated : exception);
 		}
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jooq/JooqExceptionTranslatorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -21,15 +21,18 @@
 import org.jooq.Configuration;
 import org.jooq.ExecuteContext;
 import org.jooq.SQLDialect;
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.MethodSource;
 import org.mockito.ArgumentCaptor;
 
 import org.springframework.jdbc.BadSqlGrammarException;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 
 /**
@@ -55,6 +58,17 @@ void exceptionTranslation(SQLDialect dialect, SQLException sqlException) {
 		assertThat(captor.getValue()).isInstanceOf(BadSqlGrammarException.class);
 	}
 
+	@Test
+	void whenExceptionCannotBeTranslatedThenExecuteContextExceptionIsNotCalled() {
+		ExecuteContext context = mock(ExecuteContext.class);
+		Configuration configuration = mock(Configuration.class);
+		given(context.configuration()).willReturn(configuration);
+		given(configuration.dialect()).willReturn(SQLDialect.POSTGRES);
+		given(context.sqlException()).willReturn(new SQLException(null, null, 123456789));
+		this.exceptionTranslator.exception(context);
+		verify(context, times(0)).exception(any());
+	}
+
 	static Object[] exceptionTranslation() {
 		return new Object[] { new Object[] { SQLDialect.DERBY, sqlException("42802") },
 				new Object[] { SQLDialect.H2, sqlException(42000) },