Mybatis的配置类
public class Configuration { //环境 protected Environment environment; //---------<settings>节点------- protected boolean safeRowBoundsEnabled = false; protected boolean safeResultHandlerEnabled = true; protected boolean mapUnderscoreToCamelCase = false; protected boolean aggressiveLazyLoading = true; protected boolean multipleResultSetsEnabled = true; protected boolean useGeneratedKeys = false; protected boolean useColumnLabel = true; //默认启用缓存 protected boolean cacheEnabled = true; protected boolean callSettersOnNulls = false; protected String logPrefix; protected Class <? extends Log> logImpl; protected LocalCacheScope localCacheScope = LocalCacheScope.SESSION; protected JdbcType jdbcTypeForNull = JdbcType.OTHER; protected Set<String> lazyLoadTriggerMethods = new HashSet<String>(Arrays.asList(new String[] { "equals", "clone", "hashCode", "toString" })); protected Integer defaultStatementTimeout; //默认为简单执行器 protected ExecutorType defaultExecutorType = ExecutorType.SIMPLE; protected AutoMappingBehavior autoMappingBehavior = AutoMappingBehavior.PARTIAL; //---------<settings>节点------- protected Properties variables = new Properties(); //对象工厂和对象包装器工厂 protected ObjectFactory objectFactory = new DefaultObjectFactory(); protected ObjectWrapperFactory objectWrapperFactory = new DefaultObjectWrapperFactory(); //映射注册机 protected MapperRegistry mapperRegistry = new MapperRegistry(this); //默认禁用延迟加载 protected boolean lazyLoadingEnabled = false; protected ProxyFactory proxyFactory = new JavassistProxyFactory(); // #224 Using internal Javassist instead of OGNL protected String databaseId; /** * Configuration factory class. * Used to create Configuration for loading deserialized unread properties. * * @see <a href='https://code.google.com/p/mybatis/issues/detail?id=300'>Issue 300</a> (google code) */ protected Class<?> configurationFactory; protected final InterceptorChain interceptorChain = new InterceptorChain(); //类型处理器注册机 protected final TypeHandlerRegistry typeHandlerRegistry = new TypeHandlerRegistry(); //类型别名注册机 protected final TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry(); protected final LanguageDriverRegistry languageRegistry = new LanguageDriverRegistry(); //映射的语句,存在Map里 protected final Map<String, MappedStatement> mappedStatements = new StrictMap<MappedStatement>("Mapped Statements collection"); //缓存,存在Map里 protected final Map<String, Cache> caches = new StrictMap<Cache>("Caches collection"); //结果映射,存在Map里 protected final Map<String, ResultMap> resultMaps = new StrictMap<ResultMap>("Result Maps collection"); protected final Map<String, ParameterMap> parameterMaps = new StrictMap<ParameterMap>("Parameter Maps collection"); protected final Map<String, KeyGenerator> keyGenerators = new StrictMap<KeyGenerator>("Key Generators collection"); protected final Set<String> loadedResources = new HashSet<String>(); protected final Map<String, XNode> sqlFragments = new StrictMap<XNode>("XML fragments parsed from previous mappers"); //不完整的SQL语句 protected final Collection<XMLStatementBuilder> incompleteStatements = new LinkedList<XMLStatementBuilder>(); protected final Collection<CacheRefResolver> incompleteCacheRefs = new LinkedList<CacheRefResolver>(); protected final Collection<ResultMapResolver> incompleteResultMaps = new LinkedList<ResultMapResolver>(); protected final Collection<MethodResolver> incompleteMethods = new LinkedList<MethodResolver>(); /* * A map holds cache-ref relationship. The key is the namespace that * references a cache bound to another namespace and the value is the * namespace which the actual cache is bound to. */ protected final Map<String, String> cacheRefMap = new HashMap<String, String>(); public Configuration(Environment environment) { this(); this.environment = environment; } public Configuration() { //注册更多的类型别名 typeAliasRegistry.registerAlias("JDBC", JdbcTransactionFactory.class); typeAliasRegistry.registerAlias("MANAGED", ManagedTransactionFactory.class); typeAliasRegistry.registerAlias("JNDI", JndiDataSourceFactory.class); typeAliasRegistry.registerAlias("POOLED", PooledDataSourceFactory.class); typeAliasRegistry.registerAlias("UNPOOLED", UnpooledDataSourceFactory.class); typeAliasRegistry.registerAlias("PERPETUAL", PerpetualCache.class); typeAliasRegistry.registerAlias("FIFO", FifoCache.class); typeAliasRegistry.registerAlias("LRU", LruCache.class); typeAliasRegistry.registerAlias("SOFT", SoftCache.class); typeAliasRegistry.registerAlias("WEAK", WeakCache.class); typeAliasRegistry.registerAlias("DB_VENDOR", VendorDatabaseIdProvider.class); typeAliasRegistry.registerAlias("XML", XMLLanguageDriver.class); typeAliasRegistry.registerAlias("RAW", RawLanguageDriver.class); typeAliasRegistry.registerAlias("SLF4J", Slf4jImpl.class); typeAliasRegistry.registerAlias("COMMONS_LOGGING", JakartaCommonsLoggingImpl.class); typeAliasRegistry.registerAlias("LOG4J", Log4jImpl.class); typeAliasRegistry.registerAlias("LOG4J2", Log4j2Impl.class); typeAliasRegistry.registerAlias("JDK_LOGGING", Jdk14LoggingImpl.class); typeAliasRegistry.registerAlias("STDOUT_LOGGING", StdOutImpl.class); typeAliasRegistry.registerAlias("NO_LOGGING", NoLoggingImpl.class); typeAliasRegistry.registerAlias("CGLIB", CglibProxyFactory.class); typeAliasRegistry.registerAlias("JAVASSIST", JavassistProxyFactory.class); languageRegistry.setDefaultDriverClass(XMLLanguageDriver.class); languageRegistry.register(RawLanguageDriver.class); } }郑重声明：本文版权归原作者所有，转载文章仅为传播更多信息之目的，如作者信息标记有误，请第一时间联系我们修改或删除，多谢。
