/// <summary>
/// Converts field value to the type specified by Schema.FieldDef. For example converts GDID->ulong or ulong->GDID.
/// This method can be overridden to perform custom handling of types,
/// for example one can assign bool field as "Si" that would convert to TRUE.
/// This method is called by SetFieldValue(...) before assigning actual field buffer
/// </summary>
/// <param name="fdef">Field being converted</param>
/// <param name="value">Value to convert</param>
/// <returns>Converted value before assignment to field buffer</returns>
public virtual object ConvertFieldValueToDef(Schema.FieldDef fdef, object value)
{
if (value == DBNull.Value)
{
value = null;
}
if (value != null)
{
var tv = value.GetType();
if (tv != fdef.NonNullableType && !fdef.NonNullableType.IsAssignableFrom(tv))
{
// 20150224 DKh, addedEra to GDID. Only GDIDS with ERA=0 can be converted to/from INT64
if (fdef.NonNullableType == typeof(NFX.DataAccess.Distributed.GDID))
{
if (tv == typeof(byte[]))//20151103 DKh GDID support for byte[]
{
value = new Distributed.GDID((byte[])value);
}
else
{
value = new Distributed.GDID(0, (UInt64)Convert.ChangeType(value, typeof(UInt64)));
}
}
else
{
if (tv == typeof(Distributed.GDID))
{
if (fdef.NonNullableType == typeof(byte[]))
{
value = ((Distributed.GDID)value).Bytes;
}
else
{
var gdid = (Distributed.GDID)value;
if (gdid.Era != 0)
{
throw new CRUDException(StringConsts.CRUD_GDID_ERA_CONVERSION_ERROR.Args(fdef.Name, fdef.NonNullableType.Name));
}
value = gdid.ID;
}
}
else
{
value = Convert.ChangeType(value, fdef.NonNullableType);
}
}
} //Types Differ
}
return(value);
}
/// <summary>
/// Converts field value to the type specified by Schema.FieldDef. For example converts GDID->ulong or ulong->GDID.
/// This method can be overridden to perform custom handling of types,
/// for example one can assign bool field as "Si" that would convert to TRUE.
/// This method is called by SetFieldValue(...) before assigning actual field buffer
/// </summary>
/// <param name="fdef">Field being converted</param>
/// <param name="value">Value to convert</param>
/// <returns>Converted value before assignment to field buffer</returns>
public virtual object ConvertFieldValueToDef(Schema.FieldDef fdef, object value)
{
if (value == DBNull.Value)
{
value = null;
}
if (value == null)
{
return(null);
}
var tv = value.GetType();
if (tv != fdef.NonNullableType && !fdef.NonNullableType.IsAssignableFrom(tv))
{
if (value is ObjectValueConversion.TriStateBool)
{
var tsb = (ObjectValueConversion.TriStateBool)value;
if (tsb == ObjectValueConversion.TriStateBool.Unspecified)
{
value = null;
}
else
{
value = tsb == ObjectValueConversion.TriStateBool.True;
}
return(value);
}
if (fdef.NonNullableType == typeof(ObjectValueConversion.TriStateBool))
{
var nb = value.AsNullableBool();
if (!nb.HasValue)
{
value = ObjectValueConversion.TriStateBool.Unspecified;
}
else
{
value = nb.Value ? ObjectValueConversion.TriStateBool.True : ObjectValueConversion.TriStateBool.False;
}
return(value);
}
// 20150224 DKh, addedEra to GDID. Only GDIDS with ERA=0 can be converted to/from INT64
if (fdef.NonNullableType == typeof(NFX.DataAccess.Distributed.GDID))
{
if (tv == typeof(byte[]))//20151103 DKh GDID support for byte[]
{
value = new Distributed.GDID((byte[])value);
}
else if (tv == typeof(string))//20160504 Spol GDID support for string
{
var sv = (string)value;
if (sv.IsNotNullOrWhiteSpace())
{
value = Distributed.GDID.Parse((string)value);
}
else
{
value = fdef.Type == typeof(Distributed.GDID?) ? (Distributed.GDID?)null : Distributed.GDID.Zero;
}
}
else
{
value = new Distributed.GDID(0, (UInt64)Convert.ChangeType(value, typeof(UInt64)));
}
return(value);
}
if (tv == typeof(Distributed.GDID))
{
if (fdef.NonNullableType == typeof(byte[]))
{
value = ((Distributed.GDID)value).Bytes;
}
else if (fdef.NonNullableType == typeof(string))
{
value = value.ToString();
}
else
{
var gdid = (Distributed.GDID)value;
if (gdid.Era != 0)
{
throw new CRUDException(StringConsts.CRUD_GDID_ERA_CONVERSION_ERROR.Args(fdef.Name, fdef.NonNullableType.Name));
}
value = gdid.ID;
}
return(value);
}
// 20161026 Serge: handle values of enumerated field types
if (fdef.NonNullableType.IsEnum)
{
value = value.AsString().AsType(fdef.NonNullableType);
return(value);
}
value = Convert.ChangeType(value, fdef.NonNullableType);
} //Types Differ
return(value);
}
