private static void SetStruct(MDataColumn mdc, PropertyInfo pi, FieldInfo fi, int i, int count)
{
Type type = pi != null ? pi.PropertyType : fi.FieldType;
string name = pi != null ? pi.Name : fi.Name;
SqlDbType sqlType = SQL.DataType.GetSqlType(type);
mdc.Add(name, sqlType);
MCellStruct column = mdc[i];
LengthAttribute la = GetAttr <LengthAttribute>(pi, fi);//获取长度设置
if (la != null)
{
column.MaxSize = la.MaxSize;
column.Scale = la.Scale;
}
if (column.MaxSize <= 0)
{
column.MaxSize = DataType.GetMaxSize(sqlType);
}
KeyAttribute ka = GetAttr <KeyAttribute>(pi, fi);//获取关键字判断
if (ka != null)
{
column.IsPrimaryKey = ka.IsPrimaryKey;
column.IsAutoIncrement = ka.IsAutoIncrement;
column.IsCanNull = ka.IsCanNull;
}
else if (i == 0)
{
column.IsPrimaryKey = true;
column.IsCanNull = false;
if (column.ColumnName.ToLower().Contains("id") && (column.SqlType == System.Data.SqlDbType.Int || column.SqlType == SqlDbType.BigInt))
{
column.IsAutoIncrement = true;
}
}
DefaultValueAttribute dva = GetAttr <DefaultValueAttribute>(pi, fi);
if (dva != null && dva.DefaultValue != null)
{
if (column.SqlType == SqlDbType.Bit)
{
column.DefaultValue = (dva.DefaultValue.ToString() == "True" || dva.DefaultValue.ToString() == "1") ? 1 : 0;
}
else
{
column.DefaultValue = dva.DefaultValue;
}
}
else if (i > count - 3 && sqlType == SqlDbType.DateTime && name.EndsWith("Time"))
{
column.DefaultValue = SqlValue.GetDate;
}
DescriptionAttribute da = GetAttr <DescriptionAttribute>(pi, fi);//看是否有字段描述属性。
if (da != null)
{
column.Description = da.Description;
}
}
public static MDataColumn GetColumns(Type typeInfo)
{
string key = "ColumnCache:" + typeInfo.FullName;
if (columnCache.ContainsKey(key))
{
return(columnCache[key].Clone());
}
else
{
#region 获取列结构
MDataColumn mdc = new MDataColumn();
switch (StaticTool.GetSystemType(ref typeInfo))
{
case SysType.Base:
case SysType.Enum:
mdc.Add(typeInfo.Name, DataType.GetSqlType(typeInfo), false);
return(mdc);
case SysType.Generic:
case SysType.Collection:
Type[] argTypes;
Tool.StaticTool.GetArgumentLength(ref typeInfo, out argTypes);
foreach (Type type in argTypes)
{
mdc.Add(type.Name, DataType.GetSqlType(type), false);
}
argTypes = null;
return(mdc);
}
PropertyInfo[] pis = StaticTool.GetPropertyInfo(typeInfo);
SqlDbType sqlType;
for (int i = 0; i < pis.Length; i++)
{
sqlType = SQL.DataType.GetSqlType(pis[i].PropertyType);
mdc.Add(pis[i].Name, sqlType);
MCellStruct column = mdc[i];
column.MaxSize = DataType.GetMaxSize(sqlType);
if (i == 0)
{
column.IsPrimaryKey = true;
column.IsCanNull = false;
if (column.ColumnName.ToLower().Contains("id") && (column.SqlType == System.Data.SqlDbType.Int || column.SqlType == SqlDbType.BigInt))
{
column.IsAutoIncrement = true;
}
}
else if (i > pis.Length - 3 && sqlType == SqlDbType.DateTime && pis[i].Name.EndsWith("Time"))
{
column.DefaultValue = SqlValue.GetDate;
}
}
pis = null;
#endregion
if (!columnCache.ContainsKey(key))
{
columnCache.Add(typeInfo.FullName, mdc.Clone());
}
return(mdc);
}
}
