DATAJDBC-155 - Polishing.

Update Javadoc, assert state, default nullable properties in afterPropertiesSets and add tests.

Original pull request: #54.

src/main/java/org/springframework/data/jdbc/repository/support/JdbcRepositoryFactory.java

@@ -30,13 +30,15 @@ import org.springframework.data.repository.core.RepositoryMetadata;
 import org.springframework.data.repository.core.support.RepositoryFactorySupport;
 import org.springframework.data.repository.query.EvaluationContextProvider;
 import org.springframework.data.repository.query.QueryLookupStrategy;
+import org.springframework.util.Assert;
 
 /**
  * Creates repository implementation based on JDBC.
  *
  * @author Jens Schauder
  * @author Greg Turnquist
- * @since 2.0
+ * @author Christoph Strobl
+ * @since 1.0
  */
 public class JdbcRepositoryFactory extends RepositoryFactorySupport {
 
@@ -89,7 +91,12 @@ public class JdbcRepositoryFactory extends RepositoryFactorySupport {
 		return Optional.of(new JdbcQueryLookupStrategy(evaluationContextProvider, context, accessStrategy, rowMapperMap));
 	}
 
+	/**
+	 * @param rowMapperMap must not be {@literal null} consider {@link RowMapperMap#EMPTY} instead.
+	 */
 	public void setRowMapperMap(RowMapperMap rowMapperMap) {
+
+		Assert.notNull(rowMapperMap, "RowMapperMap must not be null!");
 		this.rowMapperMap = rowMapperMap;
 	}
 }

src/main/java/org/springframework/data/jdbc/repository/support/JdbcRepositoryFactoryBean.java

@@ -36,7 +36,8 @@ import org.springframework.util.Assert;
  *
  * @author Jens Schauder
  * @author Greg Turnquist
- * @since 2.0
+ * @author Christoph Strobl
+ * @since 1.0
  */
 public class JdbcRepositoryFactoryBean<T extends Repository<S, ID>, S, ID extends Serializable> //
 		extends TransactionalRepositoryFactoryBeanSupport<T, S, ID> implements ApplicationEventPublisherAware {
@@ -67,10 +68,7 @@ public class JdbcRepositoryFactoryBean<T extends Repository<S, ID>, S, ID extend
 
 		JdbcRepositoryFactory jdbcRepositoryFactory = new JdbcRepositoryFactory(publisher, mappingContext,
 				dataAccessStrategy);
-
-		if (rowMapperMap != null) {
-			jdbcRepositoryFactory.setRowMapperMap(rowMapperMap);
-		}
+		jdbcRepositoryFactory.setRowMapperMap(rowMapperMap);
 
 		return jdbcRepositoryFactory;
 	}
@@ -82,11 +80,18 @@ public class JdbcRepositoryFactoryBean<T extends Repository<S, ID>, S, ID extend
 		this.mappingContext = mappingContext;
 	}
 
+	/**
+	 * @param dataAccessStrategy can be {@literal null}.
+	 */
 	@Autowired(required = false)
 	public void setDataAccessStrategy(DataAccessStrategy dataAccessStrategy) {
 		this.dataAccessStrategy = dataAccessStrategy;
 	}
 
+	/**
+	 * @param rowMapperMap can be {@literal null}. {@link #afterPropertiesSet()} defaults to {@link RowMapperMap#EMPTY} if
+	 *          {@literal null}.
+	 */
 	@Autowired(required = false)
 	public void setRowMapperMap(RowMapperMap rowMapperMap) {
 		this.rowMapperMap = rowMapperMap;
@@ -95,7 +100,7 @@ public class JdbcRepositoryFactoryBean<T extends Repository<S, ID>, S, ID extend
 	@Override
 	public void afterPropertiesSet() {
 
-		Assert.notNull(this.mappingContext, "MappingContext must not be null!");
+		Assert.state(this.mappingContext != null, "MappingContext is required and must not be null!");
 
 		if (dataAccessStrategy == null) {
 
@@ -104,6 +109,10 @@ public class JdbcRepositoryFactoryBean<T extends Repository<S, ID>, S, ID extend
 					mappingContext);
 		}
 
+		if (rowMapperMap == null) {
+			rowMapperMap = RowMapperMap.EMPTY;
+		}
+
 		super.afterPropertiesSet();
 	}
 }

src/test/java/org/springframework/data/jdbc/repository/support/JdbcRepositoryFactoryBeanUnitTests.java

@@ -1,7 +1,22 @@
+/*
+ * Copyright 2017-2018 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.repository.support;
 
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.mockito.Mockito.mock;
+import static org.assertj.core.api.Assertions.*;
+import static org.mockito.Mockito.*;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -9,26 +24,26 @@ import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.junit.MockitoJUnitRunner;
 import org.springframework.beans.factory.BeanFactory;
-import org.springframework.beans.factory.ListableBeanFactory;
 import org.springframework.data.annotation.Id;
 import org.springframework.data.jdbc.core.DataAccessStrategy;
+import org.springframework.data.jdbc.core.DefaultDataAccessStrategy;
 import org.springframework.data.jdbc.mapping.model.JdbcMappingContext;
+import org.springframework.data.jdbc.repository.RowMapperMap;
 import org.springframework.data.repository.CrudRepository;
-import org.springframework.data.repository.Repository;
+import org.springframework.test.util.ReflectionTestUtils;
 
 /**
  * Tests the dependency injection for {@link JdbcRepositoryFactoryBean}.
  *
  * @author Jens Schauder
  * @author Greg Turnquist
+ * @author Christoph Strobl
  */
 @RunWith(MockitoJUnitRunner.class)
 public class JdbcRepositoryFactoryBeanUnitTests {
 
 	JdbcRepositoryFactoryBean<DummyEntityRepository, DummyEntity, Long> factoryBean;
 
-	@Mock ListableBeanFactory beanFactory;
-	@Mock Repository<?, ?> repository;
 	@Mock DataAccessStrategy dataAccessStrategy;
 	@Mock JdbcMappingContext mappingContext;
 
@@ -55,6 +70,25 @@ public class JdbcRepositoryFactoryBeanUnitTests {
 		factoryBean.setBeanFactory(mock(BeanFactory.class));
 	}
 
+	@Test(expected = IllegalStateException.class) // DATAJDBC-155
+	public void afterPropertiesThowsExceptionWhenNoMappingContextSet() {
+
+		factoryBean.setMappingContext(null);
+		factoryBean.afterPropertiesSet();
+	}
+
+	@Test // DATAJDBC-155
+	public void afterPropertiesSetDefaultsNullablePropertiesCorrectly() {
+
+		factoryBean.setMappingContext(mappingContext);
+		factoryBean.afterPropertiesSet();
+
+		assertThat(factoryBean.getObject()).isNotNull();
+		assertThat(ReflectionTestUtils.getField(factoryBean, "dataAccessStrategy"))
+				.isInstanceOf(DefaultDataAccessStrategy.class);
+		assertThat(ReflectionTestUtils.getField(factoryBean, "rowMapperMap")).isEqualTo(RowMapperMap.EMPTY);
+	}
+
 	private static class DummyEntity {
 		@Id private Long id;
 	}