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POHow is a Fluent Nhibernate Reference / HasMany relationship supposed to work?
 

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  1. POHow is a Fluent Nhibernate Reference / HasMany relationship supposed to work?
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    <p>I have two tables setup with a reference and hasmany relationship. When the Xref.SaveOrUpdate() is called an "Invalid index 7 for this SqlParameterCollection with Count=7." exception is thrown. I get the feeling I'm not setting up the HasMany and References correctly. What should I be doing differently?</p> <pre><code>public class PortalPhysicianMap : ClassMap&lt;PortalPhysician&gt; { public PortalPhysicianMap() { Table("PortalPhysicians"); Id(x =&gt; x.PhysicianRno).GeneratedBy.Identity(); Map(x =&gt; x.A1PhysicianRno); Map(x =&gt; x.LastName); Map(x =&gt; x.FirstName); Map(x =&gt; x.TitleName); Map(x =&gt; x.SuffixName); Map(x =&gt; x.CorrName); Map(x =&gt; x.Specialty); Map(x =&gt; x.Institution); Map(x =&gt; x.Addr1); Map(x =&gt; x.Addr2); Map(x =&gt; x.City); Map(x =&gt; x.State); Map(x =&gt; x.PostalCode); Map(x =&gt; x.Country); Map(x =&gt; x.Phone); Map(x =&gt; x.Fax); Map(x =&gt; x.InactiveDt); Map(x =&gt; x.CreatedDate, "CreatedDt"); Map(x =&gt; x.UpdatedDate, "UpdatedDt"); HasMany(x =&gt; x.Xrefs) .KeyColumn("A1PhysicianRno"); //.Cascade.All(); } } public class PortalLoginPhyXrefMap : ClassMap&lt;PortalLoginPhyXref&gt; { public PortalLoginPhyXrefMap() { Table("PortalLoginPhyXref"); Id(x =&gt; x.XrefRno).GeneratedBy.Identity(); Map(x =&gt; x.LoginRno); Map(x =&gt; x.A1PhysicianRno); Map(x =&gt; x.UserName); Map(x =&gt; x.UserRole); Map(x =&gt; x.InactiveDt); Map(x =&gt; x.CreatedDate, "CreatedDt"); Map(x =&gt; x.UpdatedDate, "UpdatedDt"); References&lt;PortalPhysician&gt;(x =&gt; x.Login) .Column("LoginRno"); } } using (ISession s = Env.dbPortal.OpenSession()) { try { using (ITransaction Trans = s.BeginTransaction()) { Trans.Begin(); foreach (PortalLogin Login in lstLogins) { if (Login.UserName != null) { Login.SaveOrUpdate(s); foreach (PortalLoginPhyXref Xref in Login.Xrefs) { Xref.LoginRno = Login.LoginRno; Xref.SaveOrUpdate(s); } } } Trans.Commit(); } } catch (Exception Ex) { frmError.Show(Ex); } } </code></pre> <p>Additional code showing what happens in the SaveOrUpdate()</p> <pre><code>public class PortalLoginPhyXref : BaseRec { public virtual void SaveOrUpdate(ISession Sess) { base.SaveOrUpdate(Sess, XrefRno); } } public abstract class BaseRec { public virtual DateTime CreatedDate { get; set; } public virtual string CreatedUserID { get; set; } public virtual DateTime? UpdatedDate { get; set; } public virtual string UpdatedUserID { get; set; } public virtual void SaveOrUpdate(ISession Sess, int Rno) { SaveOrUpdate(Sess, (Rno == 0)); } public virtual void SaveOrUpdate(ISession Sess, string ID) { SaveOrUpdate(Sess, (ID == null)); } private void SaveOrUpdate(ISession Sess, bool Save) { if (Save) { CreatedDate = DateTime.Now; CreatedUserID = Env.UserID; } UpdatedDate = DateTime.Now; UpdatedUserID = Env.UserID; Sess.SaveOrUpdate(this); } } </code></pre>
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    1. USRuss Petersen
    1. USRuss Petersen
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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    2. PO
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    1. This table or related slice is empty.
    1. COWhat's done inside Login.SaveOrUpdate("ISession") ? Can you give example of code.
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      1. POHow is a Fluent Nhibernate Reference / HasMany relationship supposed to work?
      1. USAnton
    2. COI just added the code in the SaveOrUpdate().
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      1. POHow is a Fluent Nhibernate Reference / HasMany relationship supposed to work?
      1. USRuss Petersen
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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