setting元素的判斷

對於setting元素會先進行判讀，是否有非法的值

private Properties settingsAsProperties(XNode context) {
        if (context == null) {
            return new Properties();
        }
        //得到配置檔案setting節點下的所有屬性
        Properties props = context.getChildrenAsProperties();
        // 通過反射工具得到Configuration物件
 

        MetaClass metaConfig = MetaClass.forClass(Configuration.class, localReflectorFactory);
        //如果setting節點下的屬性有Configuration物件未包含的屬性則報錯
        for (Object key : props.keySet()) {
            if (!metaConfig.hasSetter(String.valueOf(key))) {
                throw new BuilderException("The setting "
 
 + key + " is not known.  Make sure you spelled it correctly (case sensitive).");
            }
        }
        return props;
    }

載入Vfs

對於完成判斷的setting元素會先對vfs進行復制

    private void loadCustomVfs(Properties props) throws ClassNotFoundException {
        String value = props.getProperty("vfsImpl"
 
);
        if (value != null) {
            String[] clazzes = value.split(",");
            for (String clazz : clazzes) {
                if (!clazz.isEmpty()) {
                    @SuppressWarnings("unchecked")
                    Class<? extends VFS> vfsImpl = (Class<? extends VFS>) Resources.classForName(clazz);
                    configuration.setVfsImpl(vfsImpl);
                }
            }
        }
    }

其他setting元素的賦值

其他setting元素的賦值,並不會立即執行，在其他節點解析後才會呼叫settingsElement(settings);

 private void settingsElement(Properties props) throws Exception {
        configuration.setAutoMappingBehavior(AutoMappingBehavior.valueOf(props.getProperty("autoMappingBehavior", "PARTIAL")));
        configuration.setAutoMappingUnknownColumnBehavior(AutoMappingUnknownColumnBehavior.valueOf(props.getProperty("autoMappingUnknownColumnBehavior", "NONE")));
        configuration.setCacheEnabled(booleanValueOf(props.getProperty("cacheEnabled"), true));
        configuration.setProxyFactory((ProxyFactory) createInstance(props.getProperty("proxyFactory")));
        configuration.setLazyLoadingEnabled(booleanValueOf(props.getProperty("lazyLoadingEnabled"), false));
        configuration.setAggressiveLazyLoading(booleanValueOf(props.getProperty("aggressiveLazyLoading"), false));
        configuration.setMultipleResultSetsEnabled(booleanValueOf(props.getProperty("multipleResultSetsEnabled"), true));
        configuration.setUseColumnLabel(booleanValueOf(props.getProperty("useColumnLabel"), true));
        configuration.setUseGeneratedKeys(booleanValueOf(props.getProperty("useGeneratedKeys"), false));
        configuration.setDefaultExecutorType(ExecutorType.valueOf(props.getProperty("defaultExecutorType", "SIMPLE")));
        configuration.setDefaultStatementTimeout(integerValueOf(props.getProperty("defaultStatementTimeout"), null));
        configuration.setDefaultFetchSize(integerValueOf(props.getProperty("defaultFetchSize"), null));
        configuration.setMapUnderscoreToCamelCase(booleanValueOf(props.getProperty("mapUnderscoreToCamelCase"), false));
        configuration.setSafeRowBoundsEnabled(booleanValueOf(props.getProperty("safeRowBoundsEnabled"), false));
        configuration.setLocalCacheScope(LocalCacheScope.valueOf(props.getProperty("localCacheScope", "SESSION")));
        configuration.setJdbcTypeForNull(JdbcType.valueOf(props.getProperty("jdbcTypeForNull", "OTHER")));
        configuration.setLazyLoadTriggerMethods(stringSetValueOf(props.getProperty("lazyLoadTriggerMethods"), "equals,clone,hashCode,toString"));
        configuration.setSafeResultHandlerEnabled(booleanValueOf(props.getProperty("safeResultHandlerEnabled"), true));
        configuration.setDefaultScriptingLanguage(resolveClass(props.getProperty("defaultScriptingLanguage")));
        configuration.setCallSettersOnNulls(booleanValueOf(props.getProperty("callSettersOnNulls"), false));
        configuration.setUseActualParamName(booleanValueOf(props.getProperty("useActualParamName"), true));
        configuration.setReturnInstanceForEmptyRow(booleanValueOf(props.getProperty("returnInstanceForEmptyRow"), false));
        configuration.setLogPrefix(props.getProperty("logPrefix"));
        @SuppressWarnings("unchecked")
        Class<? extends Log> logImpl = (Class<? extends Log>) resolveClass(props.getProperty("logImpl"));
        configuration.setLogImpl(logImpl);
        configuration.setConfigurationFactory(resolveClass(props.getProperty("configurationFactory")));
    }