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POfluent nhibernate mapping issue: many-to-one...could not insert: [Entity]
 

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  1. POfluent nhibernate mapping issue: many-to-one...could not insert: [Entity]
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    <p>I have a one-to-many relationship between Foo and Bar and I cannot perform an insert (I've only tried select and insert so far...select seems to be working just fine, insert fails every time).</p> <p><strong>Table Definitions:</strong></p> <pre><code>CREATE TABLE [Bar]( [Id] [int] IDENTITY(1,1) NOT NULL, [DateField] [datetime] NULL, [StringField] [varchar](8000) NULL CONSTRAINT [PK_Bar] PRIMARY KEY CLUSTERED([Id] ASC)) ON PRIMARY CREATE TABLE [Foo]( [Id] [int] IDENTITY(1,1) NOT NULL, [BarId] [int] NOT NULL, [DateField] [date] NOT NULL, [StringField] [varchar](100) NOT NULL, [GorpId] [int] NOT NULL, [BoolField] [bit] NOT NULL CONSTRAINT [PK_Foo] PRIMARY KEY CLUSTERED([Id] ASC)) ALTER TABLE [dbo].[Foo] WITH CHECK ADD CONSTRAINT [FK_Foo_Bar] FOREIGN KEY([BarId]) REFERENCES [dbo].[Bar] ([Id]) GO </code></pre> <p><strong>Class Definitions:</strong></p> <pre><code>public class Foo { public virtual int Id { get; set; } public virtual Bar Bar{ get; set; } public virtual DateTime DateField{ get; set; } public virtual string StringField{ get; set; } public virtual Gorp Gorp{ get; set; } public virtual bool BoolField{ get; set; } } public class Bar { public virtual int Id { get; set; } public virtual DateTime DateField{ get; set; } public virtual string StringField{ get; set; } public virtual ICollection&lt;Foo&gt; Foos{ get; set; } public Bar() { Foos= new List&lt;Foo&gt;(); } public virtual void AddFoo(Foo foo) { foo.Bar = this; Foos.Add(foo); } } </code></pre> <p><strong>Mappings:</strong></p> <pre><code>public class FooMap : ClassMap&lt;Foo&gt; { public FooMap() { Id(x =&gt; x.Id).UnsavedValue(0).GeneratedBy.Identity(); Map(x =&gt; x.DateField); Map(x =&gt; x.BoolField); Map(x =&gt; x.StringField); References(x =&gt; x.Gorp) .Column("GorpId") .Class&lt;Gorp&gt;(); References(x =&gt; x.Bar) .Column("BarId") .Not.Nullable(); } } public class BarMap : ClassMap&lt;Bar&gt; { Id(x =&gt; x.Id).UnsavedValue(0).GeneratedBy.Identity(); Map(x =&gt; x.DateField); Map(x =&gt; x.StringField); HasMany&lt;Foo&gt;(x =&gt; x.Foos) .AsBag() .Cascade.SaveUpdate() .ForeignKeyConstraintName("FK_Foo_Bar") .Inverse() .KeyColumn("BarId") .Not.KeyNullable(); } </code></pre> <p><strong>Generated XML:</strong></p> <pre><code>&lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="property" auto-import="true" default-cascade="none" default-lazy="true"&gt; &lt;class xmlns="urn:nhibernate-mapping-2.2" mutable="true" name="MyApp.Domain.Model.Bar, MyApp.Domain, Version=3.5.0.0, Culture=neutral, PublicKeyToken=null" table="`Bar`"&gt; &lt;id name="Id" type="System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" unsaved-value="0"&gt; &lt;column name="Id" /&gt; &lt;generator class="identity" /&gt; &lt;/id&gt; &lt;property name="DateField" type="System.DateTime, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="DateField" /&gt; &lt;/property&gt; &lt;property name="StringField" type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="StringField" /&gt; &lt;/property&gt; &lt;bag cascade="save-update" inverse="true" name="Foos" mutable="true"&gt; &lt;key foreign-key="FK_Foo_Bar" not-null="true"&gt; &lt;column name="BarId" /&gt; &lt;/key&gt; &lt;one-to-many class="MyApp.Domain.Model.Foo, MyApp.Domain, Version=3.5.0.0, Culture=neutral, PublicKeyToken=null" /&gt; &lt;/bag&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; &lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="property" auto-import="true" default-cascade="none" default-lazy="true"&gt; &lt;class xmlns="urn:nhibernate-mapping-2.2" mutable="true" name="MyApp.Domain.Model.Foo, MyApp.Domain, Version=3.5.0.0, Culture=neutral, PublicKeyToken=null" table="`Foo`"&gt; &lt;id name="Id" type="System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" unsaved-value="0"&gt; &lt;column name="Id" /&gt; &lt;generator class="identity" /&gt; &lt;/id&gt; &lt;property name="DateField" type="System.DateTime, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="DateField" /&gt; &lt;/property&gt; &lt;property name="BoolField" type="System.Boolean, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="BoolField" /&gt; &lt;/property&gt; &lt;property name="StringField" type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="StringField" /&gt; &lt;/property&gt; &lt;many-to-one class="MyApp.Domain.Model.Gorp, MyApp.Domain, Version=3.5.0.0, Culture=neutral, PublicKeyToken=null" name="Gorp"&gt; &lt;column name="GorpId" /&gt; &lt;/many-to-one&gt; &lt;many-to-one class="MyApp.Domain.Model.Bar, MyApp.Domain, Version=3.5.0.0, Culture=neutral, PublicKeyToken=null" insert="false" name="Bar" update="false"&gt; &lt;column name="BarId" not-null="true" /&gt; &lt;/many-to-one&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; </code></pre> <p><strong>Exception:</strong></p> <p>could not insert: [MyApp.Domain.Model.Foo][SQL: INSERT INTO [Foo] (DateField, BoolField, StringField, GorpId, BarId) VALUES (?, ?, ?, ?, ?); select SCOPE_IDENTITY()]</p> <p>What am I missing/misunderstanding?</p>
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    1. COIf I set Cascade.None() on both sides (with the intention of saving the instance of Bar, setting BarId on the Foo obj, then saving the instance of Foo)...I receive an exception, "SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.", when I attempt to save an instance of Bar because it tries to cascade the save anyway (??) and Bar.Foos is empty. I believe it's throwing the exception because Foo.DateField doesn't contain a value.
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