Good tip. btw the mapping should be to the property; for the provided example it look as: <property name="Column" access="camelcase-underscore"/>
2010/2/18 Mohamed Meligy <[email protected]> > I think the simplest way to implement this (regardless of whether it's > right thing or what reasons make you ask for it) is to map a nullable enum > FIELD, and make a property (that is NOT mapped in NH), which reads and > writes the field value. > > something like: > * > * > *//Mapped in NH, nullable > private EnumType? _column; > > //MOT mapped in NH > public EnumType Column > { > * > *get > { > * > *if(_column.GetValueOrDefault() == EnumType.None) //if null or none > * > *return EnumType.None; > * > *return _column; > * > *} > set > { > * > *if(value == EnumType.None) > * > *_column = null; > * > *_column = value; > * > *} > * > *} > * > > -- > Mohamed Meligy > Senior Developer, Team Lead Backup (.Net Technologies - TDG - Applications) > Injazat Data Systems > P.O. Box: 8230 Abu Dhabi, UAE. > > Phone: +971 2 6992700 > Direct: +971 2 4045385 > Mobile: +971 50 2623624, +971 55 2017 621 > > E-mail: [email protected] > Weblog: http://gurustop.net > Sent from Dubai, United Arab Emirates > > On Thu, Feb 18, 2010 at 2:41 PM, Diego Mijelshon > <[email protected]>wrote: > >> In any case, you should use a nullable enum property instead of a "NONE" >> value. >> My impression is that you are designing your domain based on display >> concerns. >> >> Diego >> >> >> >> On Thu, Feb 18, 2010 at 00:46, Fabio Maulo <[email protected]> wrote: >> >>> IUserType if you have time to implements it otherwise just keep 0 and 1 >>> since MyEnum is different than MyEnum? >>> >>> I would know who said that 0 = null. >>> >>> 2010/2/17 Peter4922 <[email protected]> >>> >>> Hi, >>>> >>>> I have a table with requests and a corresponding request class. >>>> >>>> A request has a property called Type which is a C# enumeration. >>>> Possible types are NONE=0, TRICKLEFEED=1, etc. >>>> >>>> When the type is NONE the value 0 is stored in the database. For >>>> TRICKLEFEED 1 is stored in the DB. >>>> >>>> How can I setup NHibernate to map null in the database to type NONE >>>> (the database column does allow null values). I could use >>>> ICompositeUserType but that seems overkill of this situation. >>>> >>>> Any suggestions ... ? >>>> >>>> Kind Regards >>>> >>>> Peter >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "nhusers" group. >>>> To post to this group, send email to [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]<nhusers%[email protected]> >>>> . >>>> For more options, visit this group at >>>> http://groups.google.com/group/nhusers?hl=en. >>>> >>>> >>> >>> >>> -- >>> Fabio Maulo >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "nhusers" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]<nhusers%[email protected]> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/nhusers?hl=en. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "nhusers" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<nhusers%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/nhusers?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "nhusers" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nhusers?hl=en. > -- Fabio Maulo -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nhusers?hl=en.
