c# - Setting nhibernate property-ref on one-to-many to property other than primary key fails -


i receiving exception when set property-ref in xml file.

initializing[domain.entities.r#12345]-failed lazily initialize collection of role: domain.entities.r.lp, no session or session closed

lp.hbm.xml ---------- <?xml version="1.0" encoding="utf-8" ?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="domain.entities" assembly="domain">  <class name="lp" table="lp">   <id name="id">     <column name="id" sql-type="int" not-null="true"/>   </id>    <property name="anotherfield"/>   <property name="paymentdate"/>   <property name="paymentamount"/> </class>  </hibernate-mapping>   r.hbm.xml --------- <?xml version="1.0" encoding="utf-8" ?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="domain.entities" assembly="domain"> <class name="r" table="r"> <id name="id">   <column name="id" not-null="true"/> </id>  <property name="anotherfield"/>  <set name="lp">   <key column="anotherfield" property-ref="anotherfield" />   <one-to-many class="domain.entities.lp" not-found="ignore" /> </set> </class> </hibernate-mapping>          iqueryable<entities.r> query = _db.query<entities.r>();          var query2 = _db.query<entities.lp>().tolist();          var queryresults = query.tolist();          iesi.collections.generic.iset<entities.lp> lp;          try         {             lp = queryresults.first().lp;   <--- fails exception         }         catch (exception ex)          {             console.writeline(ex.message);         }                 {             var lp2 = _db.query<entities.lp>().take(100); <-- works fine         }

what don't understand why lp2 set fine, lp fails? know data model isn't ideal, it's have work now. if remove property-ref xml file in nhprof see make calls sql table (with wrong value no data back), doesn't fail. occurs when have property-ref set.

any appreciated. first run nh.

the error message giving answer. set of lp objects in r class lazy loaded default. means need access lp collection within session.

typically, getting isessionfactory , calling opensession in using block. access collection in using block , should fine.


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