Support to configure LanguageDriver via SqlSessionFactoryBean

src/main/java/org/mybatis/spring/SqlSessionFactoryBean.java

@@ -36,6 +36,7 @@
 import org.apache.ibatis.plugin.Interceptor;
 import org.apache.ibatis.reflection.factory.ObjectFactory;
 import org.apache.ibatis.reflection.wrapper.ObjectWrapperFactory;
+import org.apache.ibatis.scripting.LanguageDriver;
 import org.apache.ibatis.session.Configuration;
 import org.apache.ibatis.session.SqlSessionFactory;
 import org.apache.ibatis.session.SqlSessionFactoryBuilder;
@@ -125,6 +126,10 @@ public class SqlSessionFactoryBean
 
   private Class<?> typeAliasesSuperType;
 
+  private LanguageDriver[] scriptingLanguageDrivers;
+
+  private Class<? extends LanguageDriver> defaultScriptingLanguageDriver;
+
   // issue #19. No default provider.
   private DatabaseIdProvider databaseIdProvider;
 
@@ -435,6 +440,28 @@ public void setEnvironment(String environment) {
     this.environment = environment;
   }
 
+  /**
+   * Set scripting language drivers.
+   *
+   * @param scriptingLanguageDrivers
+   *          scripting language drivers
+   * @since 2.0.2
+   */
+  public void setScriptingLanguageDrivers(LanguageDriver... scriptingLanguageDrivers) {
+    this.scriptingLanguageDrivers = scriptingLanguageDrivers;
+  }
+
+  /**
+   * Set a default scripting language driver class.
+   *
+   * @param defaultScriptingLanguageDriver
+   *          A default scripting language driver class
+   * @since 2.0.2
+   */
+  public void setDefaultScriptingLanguageDriver(Class<? extends LanguageDriver> defaultScriptingLanguageDriver) {
+    this.defaultScriptingLanguageDriver = defaultScriptingLanguageDriver;
+  }
+
   /**
    * {@inheritDoc}
    */
@@ -519,6 +546,15 @@ protected SqlSessionFactory buildSqlSessionFactory() throws Exception {
       });
     }
 
+    if (!isEmpty(this.scriptingLanguageDrivers)) {
+      Stream.of(this.scriptingLanguageDrivers).forEach(languageDriver -> {
+        targetConfiguration.getLanguageRegistry().register(languageDriver);
+        LOGGER.debug(() -> "Registered scripting language driver: '" + languageDriver + "'");
+      });
+    }
+    Optional.ofNullable(this.defaultScriptingLanguageDriver)
+        .ifPresent(targetConfiguration::setDefaultScriptingLanguage);
+
     if (this.databaseIdProvider != null) {// fix #64 set databaseId before parse mapper xmls
       try {
         targetConfiguration.setDatabaseId(this.databaseIdProvider.getDatabaseId(this.dataSource));

src/test/java/org/mybatis/spring/SqlSessionFactoryBeanTest.java

@@ -29,6 +29,10 @@
 import org.apache.ibatis.reflection.factory.ObjectFactory;
 import org.apache.ibatis.reflection.wrapper.DefaultObjectWrapperFactory;
 import org.apache.ibatis.reflection.wrapper.ObjectWrapperFactory;
+import org.apache.ibatis.scripting.LanguageDriver;
+import org.apache.ibatis.scripting.LanguageDriverRegistry;
+import org.apache.ibatis.scripting.defaults.RawLanguageDriver;
+import org.apache.ibatis.scripting.xmltags.XMLLanguageDriver;
 import org.apache.ibatis.session.Configuration;
 import org.apache.ibatis.session.ExecutorType;
 import org.apache.ibatis.session.SqlSessionFactory;
@@ -440,6 +444,42 @@ void testAddCache() {
     assertThat(this.factoryBean.getCache().getId()).isEqualTo("test-cache");
   }
 
+  @Test
+  void testScriptingLanguageDriverEmpty() throws Exception {
+    setupFactoryBean();
+    this.factoryBean.setScriptingLanguageDrivers();
+    LanguageDriverRegistry registry = this.factoryBean.getObject().getConfiguration().getLanguageRegistry();
+    assertThat(registry.getDefaultDriver()).isInstanceOf(XMLLanguageDriver.class);
+    assertThat(registry.getDefaultDriverClass()).isEqualTo(XMLLanguageDriver.class);
+  }
+
+  @Test
+  void testScriptingLanguageDriver() throws Exception {
+    setupFactoryBean();
+    this.factoryBean.setScriptingLanguageDrivers(new MyLanguageDriver1(), new MyLanguageDriver2());
+    LanguageDriverRegistry registry = this.factoryBean.getObject().getConfiguration().getLanguageRegistry();
+    assertThat(registry.getDefaultDriver()).isInstanceOf(XMLLanguageDriver.class);
+    assertThat(registry.getDefaultDriverClass()).isEqualTo(XMLLanguageDriver.class);
+    assertThat(registry.getDriver(MyLanguageDriver1.class)).isNotNull();
+    assertThat(registry.getDriver(MyLanguageDriver2.class)).isNotNull();
+    assertThat(registry.getDriver(XMLLanguageDriver.class)).isNotNull();
+    assertThat(registry.getDriver(RawLanguageDriver.class)).isNotNull();
+  }
+
+  @Test
+  void testScriptingLanguageDriverWithDefault() throws Exception {
+    setupFactoryBean();
+    this.factoryBean.setScriptingLanguageDrivers(new MyLanguageDriver1(), new MyLanguageDriver2());
+    this.factoryBean.setDefaultScriptingLanguageDriver(MyLanguageDriver1.class);
+    LanguageDriverRegistry registry = this.factoryBean.getObject().getConfiguration().getLanguageRegistry();
+    assertThat(registry.getDefaultDriver()).isInstanceOf(MyLanguageDriver1.class);
+    assertThat(registry.getDefaultDriverClass()).isEqualTo(MyLanguageDriver1.class);
+    assertThat(registry.getDriver(MyLanguageDriver1.class)).isNotNull();
+    assertThat(registry.getDriver(MyLanguageDriver2.class)).isNotNull();
+    assertThat(registry.getDriver(XMLLanguageDriver.class)).isNotNull();
+    assertThat(registry.getDriver(RawLanguageDriver.class)).isNotNull();
+  }
+
   private void assertDefaultConfig(SqlSessionFactory factory) {
     assertConfig(factory, SqlSessionFactoryBean.class.getSimpleName(),
         org.mybatis.spring.transaction.SpringManagedTransactionFactory.class);
@@ -464,4 +504,10 @@ private void assertConfig(SqlSessionFactory factory, String environment,
     assertThat(factory.getConfiguration().getSqlFragments().size()).isEqualTo(0);
   }
 
+  private static class MyLanguageDriver1 extends RawLanguageDriver {
+  }
+
+  private static class MyLanguageDriver2 extends RawLanguageDriver {
+  }
+
 }