DATAJDBC-395 - Added dedicated configuration class for MyBatis integration.

We now ship MyBatisJdbcConfiguration as an alternative to (Abstract)JdbcConfiguration to tweak the DataAccessStrategy bean registered to create one that tries MyBatis mappings first but still delegates to the default one.

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/config/MyBatisJdbcConfiguration.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 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
+ *
+ *      https://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.config;
+
+import org.apache.ibatis.session.SqlSession;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jdbc.core.convert.DataAccessStrategy;
+import org.springframework.data.jdbc.core.convert.JdbcConverter;
+import org.springframework.data.jdbc.mybatis.MyBatisDataAccessStrategy;
+import org.springframework.data.relational.core.mapping.RelationalMappingContext;
+import org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations;
+
+/**
+ * Configuration class tweaking Spring Data JDBC to use a {@link MyBatisDataAccessStrategy} instead of the default one.
+ *
+ * @author Oliver Drotbohm
+ * @since 1.1
+ */
+@Configuration(proxyBeanMethods = false)
+public class MyBatisJdbcConfiguration extends AbstractJdbcConfiguration {
+
+	private @Autowired SqlSession session;
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.jdbc.repository.config.AbstractJdbcConfiguration#dataAccessStrategyBean(org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations, org.springframework.data.jdbc.core.convert.JdbcConverter, org.springframework.data.relational.core.mapping.RelationalMappingContext)
+	 */
+	@Bean
+	@Override
+	public DataAccessStrategy dataAccessStrategyBean(NamedParameterJdbcOperations operations, JdbcConverter jdbcConverter,
+			RelationalMappingContext context) {
+
+		return MyBatisDataAccessStrategy.createCombinedAccessStrategy(context, jdbcConverter, operations, session);
+	}
+}

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/repository/config/MyBatisJdbcConfigurationIntegrationTests.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 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
+ *
+ *      https://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.config;
+
+import static org.assertj.core.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+import java.util.List;
+
+import org.apache.ibatis.session.SqlSession;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jdbc.core.convert.CascadingDataAccessStrategy;
+import org.springframework.data.jdbc.core.convert.DataAccessStrategy;
+import org.springframework.data.jdbc.mybatis.MyBatisDataAccessStrategy;
+import org.springframework.test.util.ReflectionTestUtils;
+
+/**
+ * Integration tests for {@link MyBatisJdbcConfiguration}.
+ *
+ * @author Oliver Drotbohm
+ */
+public class MyBatisJdbcConfigurationIntegrationTests extends AbstractJdbcConfigurationIntegrationTests {
+
+	@Test // DATAJDBC-395
+	public void bootstrapsMyBatisDataAccessStrategy() {
+
+		assertApplicationContext(context -> {
+
+			assertThat(context.getBean(DataAccessStrategy.class)) //
+					.isInstanceOfSatisfying(CascadingDataAccessStrategy.class, it -> {
+
+						List<?> strategies = (List<?>) ReflectionTestUtils.getField(it, "strategies");
+
+						assertThat(strategies).hasSize(2);
+						assertThat(strategies.get(0)).isInstanceOf(MyBatisDataAccessStrategy.class);
+					});
+
+		}, MyBatisJdbcConfiguration.class, MyBatisInfrastructure.class);
+	}
+
+	@Configuration
+	static class MyBatisInfrastructure extends Infrastructure {
+
+		@Bean
+		public SqlSession session() {
+			return mock(SqlSession.class);
+		}
+	}
+}