/// <summary>
/// 获取数据库成员信息
/// </summary>
/// <param name="member">成员信息</param>
/// <returns>数据库成员信息</returns>
internal static TmphDataMember Get(TmphMemberIndex member)
{
var value = member.GetAttribute<TmphDataMember>(true, false);
if (value == null || value.DataType == null)
{
if (member.Type.IsEnum)
{
if (value == null) value = new TmphDataMember();
value.DataType = Enum.GetUnderlyingType(member.Type);
}
else
{
var sqlMember = TmphTypeAttribute.GetAttribute<TmphDataMember>(member.Type, false, false);
if (sqlMember != null && sqlMember.DataType != null)
{
if (value == null) value = new TmphDataMember();
value.DataType = sqlMember.DataType;
if (sqlMember.DataType.nullableType() != null) value.IsNull = true;
}
}
}
else if (member.Type.IsEnum)
{
var TEnumType = Enum.GetUnderlyingType(member.Type);
if (TEnumType != value.DataType) value.TEnumType = TEnumType;
}
if (value == null)
{
var nullableType = member.Type.nullableType();
if (nullableType == null)
{
if (TmphTypeAttribute.GetAttribute<TmphSqlColumn>(member.Type, false, false) == null)
{
var dataType = member.Type.formCSharpType().toCSharpType();
if (dataType != member.Type)
{
value = new TmphDataMember();
value.DataType = dataType;
}
}
}
else
{
value = new TmphDataMember();
value.IsNull = true;
var dataType = nullableType.formCSharpType().toCSharpType();
if (dataType != nullableType) value.DataType = dataType.toNullableType();
}
}
return value ?? NullDataMember;
}
/// <summary>
/// 字段信息
/// </summary>
/// <param name="field"></param>
/// <param name="attribute"></param>
public TmphFieldInfo(TmphFieldIndex field, TmphDataMember attribute)
{
Field = field.Member;
DataMember = attribute;
MemberMapIndex = field.MemberIndex;
}
/// <summary>
/// 格式化数据库成员信息
/// </summary>
/// <param name="value"></param>
/// <param name="type"></param>
/// <returns></returns>
internal static TmphDataMember FormatSql(TmphDataMember value, Type type, ref bool isSqlColumn)
{
if (type.IsEnum)
{
var TEnumType = Enum.GetUnderlyingType(type);
if (value == null) return new TmphDataMember { DataType = Enum.GetUnderlyingType(type) };
if (value.DataType == null) value.DataType = Enum.GetUnderlyingType(type);
else if (TEnumType != value.DataType) value.TEnumType = TEnumType;
return value;
}
Type nullableType = null;
if (type.IsGenericType)
{
var genericType = type.GetGenericTypeDefinition();
if (genericType == typeof(TmphJsonMember<>))
{
if (value == null) return new TmphDataMember { DataType = typeof(string) };
value.DataType = typeof(string);
return value;
}
if (genericType == typeof(TmphFileBlockMember<>))
{
if (value == null) return new TmphDataMember { DataType = typeof(TmphFileBlockStream.TmphIndex) };
value.DataType = typeof(TmphFileBlockStream.TmphIndex);
return value;
}
if (genericType == typeof(Nullable<>)) nullableType = type.GetGenericArguments()[0];
}
else if (TmphTypeAttribute.GetAttribute<TmphSqlColumn>(type, false, false) != null)
{
isSqlColumn = true;
return NullDataMember;
}
if (value == null || value.DataType == null)
{
var sqlMember = TmphTypeAttribute.GetAttribute<TmphDataMember>(type, false, false);
if (sqlMember != null && sqlMember.DataType != null)
{
if (value == null) value = new TmphDataMember();
value.DataType = sqlMember.DataType;
if (sqlMember.DataType.IsValueType && sqlMember.DataType.IsGenericType &&
sqlMember.DataType.GetGenericTypeDefinition() == typeof(Nullable<>))
value.IsNull = true;
}
}
if (value == null)
{
if (nullableType == null)
{
var dataType = type.formCSharpType().toCSharpType();
if (dataType != type) value = new TmphDataMember { DataType = dataType };
}
else
{
value = new TmphDataMember { IsNull = true };
var dataType = nullableType.formCSharpType().toCSharpType();
if (dataType != nullableType) value.DataType = dataType.toNullableType();
}
}
return value ?? NullDataMember;
}
