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An enhanced toolkit of Mybatis to simplify development.
/**
* Copyright (c) 2011-2014, hubin ([email protected]).
*
* 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 com.baomidou.mybatisplus.spring;
import static org.springframework.util.Assert.notNull;
import static org.springframework.util.Assert.state;
import static org.springframework.util.ObjectUtils.isEmpty;
import static org.springframework.util.StringUtils.hasLength;
import static org.springframework.util.StringUtils.tokenizeToStringArray;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Properties;
import javax.sql.DataSource;
import org.apache.ibatis.builder.xml.XMLMapperBuilder;
import org.apache.ibatis.cache.Cache;
import org.apache.ibatis.executor.ErrorContext;
import org.apache.ibatis.io.VFS;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
import org.apache.ibatis.mapping.DatabaseIdProvider;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.reflection.factory.ObjectFactory;
import org.apache.ibatis.reflection.wrapper.ObjectWrapperFactory;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.ibatis.transaction.TransactionFactory;
import org.apache.ibatis.type.TypeHandler;
import org.mybatis.spring.transaction.SpringManagedTransactionFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.core.NestedIOException;
import org.springframework.core.io.Resource;
import org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy;
import com.baomidou.mybatisplus.MybatisConfiguration;
import com.baomidou.mybatisplus.MybatisXMLConfigBuilder;
import com.baomidou.mybatisplus.mapper.DBType;
/**
*
* 拷贝类 org.mybatis.spring.SqlSessionFactoryBean 修改方法 buildSqlSessionFactory()
* 加载自定义 MybatisXmlConfigBuilder
*
*
* @author hubin
* @Date 2016-01-23
*/
public class MybatisSqlSessionFactoryBean implements FactoryBean, InitializingBean, ApplicationListener {
private static final Log LOGGER = LogFactory.getLog(MybatisSqlSessionFactoryBean.class);
private Resource configLocation;
private Configuration configuration;
private Resource[] mapperLocations;
private DataSource dataSource;
private TransactionFactory transactionFactory;
private Properties configurationProperties;
private SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
private SqlSessionFactory sqlSessionFactory;
// EnvironmentAware requires spring 3.1
private String environment = MybatisSqlSessionFactoryBean.class.getSimpleName();
private boolean failFast;
private Interceptor[] plugins;
private TypeHandler[] typeHandlers;
private String typeHandlersPackage;
private Class[] typeAliases;
private String typeAliasesPackage;
private Class typeAliasesSuperType;
// issue #19. No default provider.
private DatabaseIdProvider databaseIdProvider;
private Class vfs;
private Cache cache;
private ObjectFactory objectFactory;
private ObjectWrapperFactory objectWrapperFactory;
//TODO 注入数据库类型
public void setDbType(String dbType) {
MybatisConfiguration.DB_TYPE = DBType.getDBType(dbType);
}
/**
* Sets the ObjectFactory.
*
* @since 1.1.2
* @param objectFactory
*/
public void setObjectFactory(ObjectFactory objectFactory) {
this.objectFactory = objectFactory;
}
/**
* Sets the ObjectWrapperFactory.
*
* @since 1.1.2
* @param objectWrapperFactory
*/
public void setObjectWrapperFactory(ObjectWrapperFactory objectWrapperFactory) {
this.objectWrapperFactory = objectWrapperFactory;
}
/**
* Gets the DatabaseIdProvider
*
* @since 1.1.0
* @return
*/
public DatabaseIdProvider getDatabaseIdProvider() {
return databaseIdProvider;
}
/**
* Sets the DatabaseIdProvider. As of version 1.2.2 this variable is not
* initialized by default.
*
* @since 1.1.0
* @param databaseIdProvider
*/
public void setDatabaseIdProvider(DatabaseIdProvider databaseIdProvider) {
this.databaseIdProvider = databaseIdProvider;
}
public Class getVfs() {
return this.vfs;
}
public void setVfs(Class vfs) {
this.vfs = vfs;
}
public Cache getCache() {
return this.cache;
}
public void setCache(Cache cache) {
this.cache = cache;
}
/**
* Mybatis plugin list.
*
* @since 1.0.1
*
* @param plugins
* list of plugins
*
*/
public void setPlugins(Interceptor[] plugins) {
this.plugins = plugins;
}
/**
* Packages to search for type aliases.
*
* @since 1.0.1
*
* @param typeAliasesPackage
* package to scan for domain objects
*
*/
public void setTypeAliasesPackage(String typeAliasesPackage) {
this.typeAliasesPackage = typeAliasesPackage;
}
/**
* Super class which domain objects have to extend to have a type alias
* created. No effect if there is no package to scan configured.
*
* @since 1.1.2
*
* @param typeAliasesSuperType
* super class for domain objects
*
*/
public void setTypeAliasesSuperType(Class typeAliasesSuperType) {
this.typeAliasesSuperType = typeAliasesSuperType;
}
/**
* Packages to search for type handlers.
*
* @since 1.0.1
*
* @param typeHandlersPackage
* package to scan for type handlers
*
*/
public void setTypeHandlersPackage(String typeHandlersPackage) {
this.typeHandlersPackage = typeHandlersPackage;
}
/**
* Set type handlers. They must be annotated with {@code MappedTypes} and
* optionally with {@code MappedJdbcTypes}
*
* @since 1.0.1
*
* @param typeHandlers
* Type handler list
*/
public void setTypeHandlers(TypeHandler[] typeHandlers) {
this.typeHandlers = typeHandlers;
}
/**
* List of type aliases to register. They can be annotated with
* {@code Alias}
*
* @since 1.0.1
*
* @param typeAliases
* Type aliases list
*/
public void setTypeAliases(Class[] typeAliases) {
this.typeAliases = typeAliases;
}
/**
* If true, a final check is done on Configuration to assure that all mapped
* statements are fully loaded and there is no one still pending to resolve
* includes. Defaults to false.
*
* @since 1.0.1
*
* @param failFast
* enable failFast
*/
public void setFailFast(boolean failFast) {
this.failFast = failFast;
}
/**
* Set the location of the MyBatis {@code SqlSessionFactory} config file. A
* typical value is "WEB-INF/mybatis-configuration.xml".
*/
public void setConfigLocation(Resource configLocation) {
this.configLocation = configLocation;
}
/**
* Set a customized MyBatis configuration.
*
* @param configuration
* MyBatis configuration
* @since 1.3.0
*/
public void setConfiguration(Configuration configuration) {
this.configuration = configuration;
}
/**
* Set locations of MyBatis mapper files that are going to be merged into
* the {@code SqlSessionFactory} configuration at runtime.
*
* This is an alternative to specifying "<sqlmapper>" entries in an
* MyBatis config file. This property being based on Spring's resource
* abstraction also allows for specifying resource patterns here: e.g.
* "classpath*:sqlmap/*-mapper.xml".
*/
public void setMapperLocations(Resource[] mapperLocations) {
this.mapperLocations = mapperLocations;
}
/**
* Set optional properties to be passed into the SqlSession configuration,
* as alternative to a {@code <properties>} tag in the configuration
* xml file. This will be used to resolve placeholders in the config file.
*/
public void setConfigurationProperties(Properties sqlSessionFactoryProperties) {
this.configurationProperties = sqlSessionFactoryProperties;
}
/**
* Set the JDBC {@code DataSource} that this instance should manage
* transactions for. The {@code DataSource} should match the one used by the
* {@code SqlSessionFactory}: for example, you could specify the same JNDI
* DataSource for both.
*
* A transactional JDBC {@code Connection} for this {@code DataSource} will
* be provided to application code accessing this {@code DataSource}
* directly via {@code DataSourceUtils} or
* {@code DataSourceTransactionManager}.
*
* The {@code DataSource} specified here should be the target
* {@code DataSource} to manage transactions for, not a
* {@code TransactionAwareDataSourceProxy}. Only data access code may work
* with {@code TransactionAwareDataSourceProxy}, while the transaction
* manager needs to work on the underlying target {@code DataSource}. If
* there's nevertheless a {@code TransactionAwareDataSourceProxy} passed in,
* it will be unwrapped to extract its target {@code DataSource}.
*
*/
public void setDataSource(DataSource dataSource) {
if (dataSource instanceof TransactionAwareDataSourceProxy) {
// If we got a TransactionAwareDataSourceProxy, we need to perform
// transactions for its underlying target DataSource, else data
// access code won't see properly exposed transactions (i.e.
// transactions for the target DataSource).
this.dataSource = ((TransactionAwareDataSourceProxy) dataSource).getTargetDataSource();
} else {
this.dataSource = dataSource;
}
}
/**
* Sets the {@code SqlSessionFactoryBuilder} to use when creating the
* {@code SqlSessionFactory}.
*
* This is mainly meant for testing so that mock SqlSessionFactory classes
* can be injected. By default, {@code SqlSessionFactoryBuilder} creates
* {@code DefaultSqlSessionFactory} instances.
*
*/
public void setSqlSessionFactoryBuilder(SqlSessionFactoryBuilder sqlSessionFactoryBuilder) {
this.sqlSessionFactoryBuilder = sqlSessionFactoryBuilder;
}
/**
* Set the MyBatis TransactionFactory to use. Default is
* {@code SpringManagedTransactionFactory}
*
* The default {@code SpringManagedTransactionFactory} should be appropriate
* for all cases: be it Spring transaction management, EJB CMT or plain JTA.
* If there is no active transaction, SqlSession operations will execute SQL
* statements non-transactionally.
*
* It is strongly recommended to use the default
* {@code TransactionFactory}. If not used, any attempt at getting an
* SqlSession through Spring's MyBatis framework will throw an exception if
* a transaction is active.
*
* @see SpringManagedTransactionFactory
* @param transactionFactory
* the MyBatis TransactionFactory
*/
public void setTransactionFactory(TransactionFactory transactionFactory) {
this.transactionFactory = transactionFactory;
}
/**
* NOTE: This class overrides any {@code Environment} you
* have set in the MyBatis config file. This is used only as a placeholder
* name. The default value is
* {@code SqlSessionFactoryBean.class.getSimpleName()}.
*
* @param environment
* the environment name
*/
public void setEnvironment(String environment) {
this.environment = environment;
}
/**
* {@inheritDoc}
*/
public void afterPropertiesSet() throws Exception {
notNull(dataSource, "Property 'dataSource' is required");
notNull(sqlSessionFactoryBuilder, "Property 'sqlSessionFactoryBuilder' is required");
state((configuration == null && configLocation == null) || !(configuration != null && configLocation != null),
"Property 'configuration' and 'configLocation' can not specified with together");
this.sqlSessionFactory = buildSqlSessionFactory();
}
/**
* Build a {@code SqlSessionFactory} instance.
*
* The default implementation uses the standard MyBatis
* {@code XMLConfigBuilder} API to build a {@code SqlSessionFactory}
* instance based on an Reader. Since 1.3.0, it can be specified a
* {@link Configuration} instance directly(without config file).
*
* @return SqlSessionFactory
* @throws IOException
* if loading the config file failed
*/
protected SqlSessionFactory buildSqlSessionFactory() throws IOException {
Configuration configuration;
//TODO 加载自定义 MybatisXmlConfigBuilder
MybatisXMLConfigBuilder xmlConfigBuilder = null;
if (this.configuration != null) {
configuration = this.configuration;
if (configuration.getVariables() == null) {
configuration.setVariables(this.configurationProperties);
} else if (this.configurationProperties != null) {
configuration.getVariables().putAll(this.configurationProperties);
}
} else if (this.configLocation != null) {
xmlConfigBuilder = new MybatisXMLConfigBuilder(this.configLocation.getInputStream(), null,
this.configurationProperties);
configuration = xmlConfigBuilder.getConfiguration();
} else {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(
"Property `configuration` or 'configLocation' not specified, using default MyBatis Configuration");
}
//TODO 使用自定义配置
configuration = new MybatisConfiguration();
configuration.setVariables(this.configurationProperties);
}
if (this.objectFactory != null) {
configuration.setObjectFactory(this.objectFactory);
}
if (this.objectWrapperFactory != null) {
configuration.setObjectWrapperFactory(this.objectWrapperFactory);
}
if (this.vfs != null) {
configuration.setVfsImpl(this.vfs);
}
if (hasLength(this.typeAliasesPackage)) {
String[] typeAliasPackageArray = tokenizeToStringArray(this.typeAliasesPackage,
ConfigurableApplicationContext.CONFIG_LOCATION_DELIMITERS);
for (String packageToScan : typeAliasPackageArray) {
configuration.getTypeAliasRegistry().registerAliases(packageToScan,
typeAliasesSuperType == null ? Object.class : typeAliasesSuperType);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Scanned package: '" + packageToScan + "' for aliases");
}
}
}
if (!isEmpty(this.typeAliases)) {
for (Class typeAlias : this.typeAliases) {
configuration.getTypeAliasRegistry().registerAlias(typeAlias);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Registered type alias: '" + typeAlias + "'");
}
}
}
if (!isEmpty(this.plugins)) {
for (Interceptor plugin : this.plugins) {
configuration.addInterceptor(plugin);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Registered plugin: '" + plugin + "'");
}
}
}
if (hasLength(this.typeHandlersPackage)) {
String[] typeHandlersPackageArray = tokenizeToStringArray(this.typeHandlersPackage,
ConfigurableApplicationContext.CONFIG_LOCATION_DELIMITERS);
for (String packageToScan : typeHandlersPackageArray) {
configuration.getTypeHandlerRegistry().register(packageToScan);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Scanned package: '" + packageToScan + "' for type handlers");
}
}
}
if (!isEmpty(this.typeHandlers)) {
for (TypeHandler typeHandler : this.typeHandlers) {
configuration.getTypeHandlerRegistry().register(typeHandler);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Registered type handler: '" + typeHandler + "'");
}
}
}
if (this.databaseIdProvider != null) {// fix #64 set databaseId before
// parse mapper xmls
try {
configuration.setDatabaseId(this.databaseIdProvider.getDatabaseId(this.dataSource));
} catch (SQLException e) {
throw new NestedIOException("Failed getting a databaseId", e);
}
}
if (this.cache != null) {
configuration.addCache(this.cache);
}
if (xmlConfigBuilder != null) {
try {
xmlConfigBuilder.parse();
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Parsed configuration file: '" + this.configLocation + "'");
}
} catch (Exception ex) {
throw new NestedIOException("Failed to parse config resource: " + this.configLocation, ex);
} finally {
ErrorContext.instance().reset();
}
}
if (this.transactionFactory == null) {
this.transactionFactory = new SpringManagedTransactionFactory();
}
configuration.setEnvironment(new Environment(this.environment, this.transactionFactory, this.dataSource));
if (!isEmpty(this.mapperLocations)) {
for (Resource mapperLocation : this.mapperLocations) {
if (mapperLocation == null) {
continue;
}
try {
XMLMapperBuilder xmlMapperBuilder = new XMLMapperBuilder(mapperLocation.getInputStream(),
configuration, mapperLocation.toString(), configuration.getSqlFragments());
xmlMapperBuilder.parse();
} catch (Exception e) {
throw new NestedIOException("Failed to parse mapping resource: '" + mapperLocation + "'", e);
} finally {
ErrorContext.instance().reset();
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Parsed mapper file: '" + mapperLocation + "'");
}
}
} else {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Property 'mapperLocations' was not specified or no matching resources found");
}
}
return this.sqlSessionFactoryBuilder.build(configuration);
}
/**
* {@inheritDoc}
*/
public SqlSessionFactory getObject() throws Exception {
if (this.sqlSessionFactory == null) {
afterPropertiesSet();
}
return this.sqlSessionFactory;
}
/**
* {@inheritDoc}
*/
public Class getObjectType() {
return this.sqlSessionFactory == null ? SqlSessionFactory.class : this.sqlSessionFactory.getClass();
}
/**
* {@inheritDoc}
*/
public boolean isSingleton() {
return true;
}
/**
* {@inheritDoc}
*/
public void onApplicationEvent(ApplicationEvent event) {
if (failFast && event instanceof ContextRefreshedEvent) {
// fail-fast -> check all statements are completed
this.sqlSessionFactory.getConfiguration().getMappedStatementNames();
}
}
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