/// <summary>
/// 获取缓存项，如果没有，将自动创建一个
/// </summary>
/// <param name="entityType">实体类类型</param>
/// <returns></returns>
public static DMEDb_EntityFields Item(Type entityType)
{
if (dict.ContainsKey(entityType.FullName))
return dict[entityType.FullName];
DMEDb_EntityFields ef = new DMEDb_EntityFields();
if (ef.Init(entityType))
dict.Add(entityType.FullName, ef);
return ef;
}
protected internal static void BinaryDeserializeCommon(BinaryReader br, DMEDb_EntityFields ef,DMEDb_EntityBase factEntity)
{
int flag = br.ReadInt32();
if (flag != DMEDb_Serialize.ENTITY_ITEM_FLAG)
throw new Exception("反序列化错误：不是有效的实体类数据格式！");
for (int i = 0; i < factEntity.PropertyValues.Length; i++)
{
object obj = null;
if (br.ReadByte() == 0)
{
obj = DBNull.Value;
}
else
{
Type propertyType = ef.GetPropertyType(factEntity.PropertyNames[i]);
if (propertyType == null)
throw new Exception("DME.DataBase实体类序列化错误：未知的实体属性类型，请检查实体类的属性和字段定义是否匹配。");
switch (propertyType.Name)
{
case "Int32": obj = br.ReadInt32(); break;
case "String":
obj = br.ReadString();//继续读一个字符串
break;
case "DateTime": obj = DateTime.FromBinary(br.ReadInt64()); break;
case "Int16": obj = br.ReadInt16(); break;
case "Int64": obj = br.ReadInt64(); break;
case "Single": obj = br.ReadSingle(); break;
case "Double": obj = br.ReadDouble(); break;
case "Decimal": obj = br.ReadDecimal(); break;
case "Boolean": obj = br.ReadBoolean(); break;
case "Byte": obj = br.ReadByte(); break;
case "Char": obj = br.ReadChar(); break;
case "Byte[]":
int length = br.ReadInt32();
if (length > 0)
obj = br.ReadBytes(length);
break;
}
}
factEntity.PropertyValues[i] = obj;
}
}