private object CreateDataAccessObject(Type type)
{
try
{
string xmlTemplete = "<sqlMap embedded=\"{0},{1}\" xmlns=\"http://ibatis.apache.org/dataMapper\" />";
XmlDocument config = new XmlDocument();
config.LoadXml(string.Format(xmlTemplete, type.FullName + ".sql.xml", type.Assembly.FullName));
if (this._context.Reader != null)
{
_mapLoader.ReadOnlyBuilder.ConfigureSqlMap(config.DocumentElement);
}
_mapLoader.WriteBuilder.ConfigureSqlMap(config.DocumentElement);
}
catch (Exception ex)
{
throw new DataAccessException(string.Format("创建数据访问对象失败，对象类型：{0}", type.FullName), ex);
}
DefaultProxyBuilder builder = new DefaultProxyBuilder();
ProxyGenerator generator = new ProxyGenerator(builder);
DataAccessOutSqlTextConfig outTypeConfig = null;
var outSqlType = type.GetCustomAttribute <DataAccessOutSqlTextAttribute>();
if (outSqlType != null)
{
outTypeConfig = outSqlType.Create();
}
return(generator.CreateInterfaceProxyWithoutTarget(type, new DataAccess(this._context, outTypeConfig)));
}
public DataAccessContext(DataMappingContext context, MethodInfo method, DataAccessOutSqlTextConfig outTypeConfig)
{
this._context = context;
this._method = method;
this._statementName = method.DeclaringType.FullName + "." + method.Name;
var outSqlType = method.GetCustomAttribute <DataAccessOutSqlTextAttribute>();
if (outSqlType != null)
{
this._outTypeConfig = outSqlType.Create();
}
else if (this._context.OutTypeConfig != null)
{
this._outTypeConfig = this._context.OutTypeConfig;
}
else if (outTypeConfig != null)
{
this._outTypeConfig = outTypeConfig;
}
var type = method.GetCustomAttribute <DataAccessTypeAttribute>();
var methodName = method.Name.ToLower();
if (type != null)
{
this._dataAccessType = type.AccessType;
}
else if (methodName.StartsWith("get"))
{
this._dataAccessType = DataAccessType.SelectReadOnly;
}
else if (methodName.StartsWith("update"))
{
this._dataAccessType = DataAccessType.Update;
}
else if (methodName.StartsWith("delete"))
{
this._dataAccessType = DataAccessType.Delete;
}
else if (methodName.StartsWith("insert"))
{
this._dataAccessType = DataAccessType.Insert;
}
if (this._dataAccessType == DataAccessType.SelectReadOnly && context.Reader == null)
{
this._dataAccessType = DataAccessType.SelectReadWrite;
_logger.Warn("数据源配置未指定只读库连接，该方法自动转为读写库连接，方法名：{0}", method.Name);
}
var interfaces = this._method.ReturnType.GetInterfaces();
foreach (var item in interfaces)
{
if (item == typeof(IPagedList))
{
this._isIPagedList = true;
break;
}
}
if (!this._isIPagedList)
{
foreach (var item in interfaces)
{
if (item == typeof(IEnumerable))
{
this._isSelectList = true;
break;
}
}
}
if (this._isIPagedList && this._method.ReturnType.IsGenericType)
{
var genericArgs = this._method.ReturnType.GetGenericArguments();
if (genericArgs.Length > 1)
{
throw new DataAccessException("分页查询方法返回值必须为PagedList<T>接口的对象");
}
var returnType = genericArgs[0];
this._pagedListType = typeof(PagedList <>).MakeGenericType(returnType);
}
if (!this._isIPagedList && !this._isSelectList && !IsNullableType(this._method.ReturnType) && this._method.ReturnType.IsValueType)
{
this._isNotCanNullReturnValue = true;
}
var parameters = this._method.GetParameters();
if (parameters.Length > 1)
{
if (this._isIPagedList)
{
throw new DataAccessException("分页查询方法参数必须且只能是一个IPageParameter接口的对象");
}
foreach (var item in parameters)
{
_parameterList.Add(item.Name);
}
_isHashtableParameter = true;
}
else if (parameters.Length == 0 && this._isIPagedList)
{
throw new DataAccessException("分页查询方法参数必须且只能是一个IPageParameter接口的对象");
}
else if (parameters.Length == 1 && this._isIPagedList)
{
var parameterInterfaces = parameters[0].ParameterType.GetInterfaces();
bool flag = false;
foreach (var item in parameterInterfaces)
{
if (item == typeof(IPageParameter))
{
flag = true;
break;
}
}
if (!flag)
{
throw new DataAccessException("分页查询方法参数必须且只能是一个IPageParameter接口的对象");
}
}
var interception = method.GetCustomAttribute <DataMappingInterceptionAttribute>();
if (interception != null)
{
_intercept = Activator.CreateInstance(interception.Intercept) as IDataMappingInterception;
}
}
public DataAccessFactory(string dataSourceName, DataAccessOutSqlTextConfig outTypeConfig)
: this(dataSourceName)
{
this._context.OutTypeConfig = outTypeConfig;
}
public DataAccess(DataMappingContext context, DataAccessOutSqlTextConfig outTypeConfig)
{
this._context = context;
this._outTypeConfig = outTypeConfig;
}
