private string GetRelationTable(Type type1, Type type2)
{
string table1 = MetaDataHelper.GetTableName(type1);
string table2 = MetaDataHelper.GetTableName(type2);
return(table1 + '_' + table2);
}
public static void ValidateEntity(object entity)
{
var meta = MetaDataHelper.GetMetaData(entity.GetType());
foreach (var prop in meta.Properties.Values)
{
var val = prop.GetValue(entity);
if (prop.RequiredAttribute != null)
{
if (val == null)
{
throw new ValidationException(prop.DisplayName + "字段必填");
}
if (prop.PropertyInfo.PropertyType == typeof(string) && val.ToString().IsNullOrWhiteSpace())
{
var errMsg = prop.RequiredAttribute.ErrorMessage ?? prop.DisplayName + "字段必填";
throw new ValidationException(errMsg);
}
}
if (prop.StringLengthAttribute != null)
{
if (val != null && val.ToString().Length > prop.StringLengthAttribute.MaximumLength)
{
var errMsg = prop.StringLengthAttribute.ErrorMessage ?? prop.DisplayName + "字段长度不能超过" + prop.StringLengthAttribute;
throw new ValidationException(errMsg);
}
}
}
}
public bool Send <T>(string to, string subject, string path, T t)
{
var temp = string.Empty;
using (StreamReader reader = new StreamReader(path, Encoding.UTF8)) {
temp = reader.ReadToEnd();
}
var reg = new Regex(@"({{.*?}})");
var siteMeta = MetaDataHelper.GetMetaData <SiteInfo>();
var entityMeta = MetaDataHelper.GetMetaData <T>();
var content = reg.Replace(temp, (m) =>
{
var prop = m.Value.Replace("{", "").Replace("}", "");
if (siteMeta.Properties.ContainsKey(prop))
{
return(siteMeta.Properties[prop].GetValue(SiteInfo).ToString());
}
else if (entityMeta.Properties.ContainsKey(prop))
{
return(entityMeta.Properties[prop].GetValue(t).ToString());
}
return(string.Empty);
});
return(Send(to, subject, content));
}
public static void Add <TEntity>(Type type)
{
var entityMetaData = MetaDataHelper.GetMetaData <TEntity>();
var table = TypeDescriptor.GetAttributes(type).OfType <TableAttribute>().FirstOrDefault();
if (table == null)
{
TypeDescriptor.AddAttributes(type, new TableAttribute(entityMetaData.TableName));
}
TypeDescriptionProvider parent = TypeDescriptor.GetProvider(type);
var entityType = typeof(TEntity);
MyTypeDescriptionProvider td = new MyTypeDescriptionProvider(parent, entityType);
TypeDescriptor.AddProvider(td, type);
}
internal MetaData(Type type)
{
RelationColumns = new Dictionary <string, PropertyEx>(StringComparer.OrdinalIgnoreCase);
Properties = new Dictionary <string, PropertyEx>(StringComparer.OrdinalIgnoreCase);
var typeAttr = TypeDescriptor.GetAttributes(type);
var arrs = TypeDescriptor.GetProperties(type);
TableName = MetaDataHelper.GetTableName(type);
for (int idx = 0; idx < arrs.Count; idx++)
{
var prop = PropertyEx.Create(arrs[idx]);
Properties[prop.Name] = prop;
if (prop is IDProperty)
{
KeyColumn = (IDProperty)prop;
}
}
}
public MyCustomTypeDescriptor(ICustomTypeDescriptor parent, Type genType)
: base(parent)
{
EntityType = genType;
var propertyCollections = parent.GetProperties();
var entityMetaData = MetaDataHelper.GetMetaData(EntityType);
var entityProps = entityMetaData.Properties;
List <PropertyDescriptor> propertyList = new List <PropertyDescriptor>();
foreach (PropertyDescriptor descriptor in propertyCollections)
{
var myProperty = new MyPropertyDescriptor(descriptor);
var entityProperty = entityProps[myProperty.Name];
if (entityProperty != null)
{
List <Attribute> attriList = new List <Attribute>();
for (int i = 0; i < entityProperty.Attributes.Count; i++)
{
attriList.Add(entityProperty.Attributes[i]);
}
if (attriList.Count > 0)
{
myProperty.AddAttributes(attriList.ToArray());
}
}
else
{
myProperty.AddAttributes(new NotMappedAttribute());
}
propertyList.Add(myProperty);
}
_propertyCollections = new PropertyDescriptorCollection(propertyList.ToArray());
}
public static void SetValue <T>(T entity, string propName, object newVal)
{
var meta = MetaDataHelper.GetMetaData(entity.GetType());
meta.Properties[propName].SetValue(entity, newVal);
}
public static object GetValue <T>(T entity, string propName)
{
var meta = MetaDataHelper.GetMetaData(entity.GetType());
return(meta.Properties[propName].GetValue(entity));
}
private string GetReferenceID(Type type)
{
return(MetaDataHelper.GetTableName(type) + "Id");
}