Sure, but I get a seemingly illogical error when I try to do this on
the discriminator column:
----> NHibernate.MappingException :
Smack.ConstructionAdmin.Data.Mapping.Hbms.ActivitySubject.hbm.xml(13,70):
XML validation error: The 'unique-key' attribute is not declared.
----> System.Xml.Schema.XmlSchemaValidationException : The 'unique-
key' attribute is not declared.
line 13 is:
<discriminator column="ActivitySubjectType" type="System.String"
unique-key="ActivitySubjectTypeBusinessId" />
<property name="BusinessId" length="25" not-null="true" unique-
key="ActivitySubjectTypeBusinessId"/>
Is this by design?
On Dec 25, 7:50 am, Fabio Maulo <[email protected]> wrote:
> node <column>
> attribute unique-key
>
> Two columns with same unique-key value will be part of the same unique
> index.
>
>
>
>
>
>
>
>
>
> On Sat, Dec 25, 2010 at 1:50 AM, Berryl Hesh <[email protected]> wrote:
> > I wound up with the mapping below which kind of works but would work
> > better if I could keep the combination of the natural-id and
> > discriminator unique. Two questions:
>
> > 1) is this intentional or is there some way I am missing to map both
> > columns as part of a unique key?
>
> > 2) The main reason I want to use inheritance here is so make it easy
> > for an ActivitySubject to have the one to many relationship with
> > Allocation. I am tempted to try an Any mapping instead (once I
> > understand that better). If keeping discriminator from participating
> > in a unique index with another column intentional, is there some
> > obvious design flaw / obvious answer?
>
> > Cheers,
> > Berryl
>
> > <class name="ActivitySubject" table="ActivitySubjects" discriminator-
> > value="BASE_CLASS">
>
> > <id name="Id" unsaved-value="0">
> > <column name="ActivitySubjectId" />
> > <generator class="hilo" />
> > </id>
>
> > <discriminator column="ActivitySubjectType" type="System.String" />
>
> > <natural-id mutable="true">
> > <property name="BusinessId" length="25" not-null="true" />
> > </natural-id>
>
> > <property name="Description" length="75" not-null="true" />
>
> > <set access="field.camelcase-underscore" cascade="all-delete-orphan"
> > inverse="true" name="Allocations">
> > <key foreign-key="Allocations_Resource_FK">
> > <column name="ActivityId" />
> > </key>
> > <one-to-many class="Allocation />
> > </set>
>
> > --
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> --
> Fabio Maulo
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