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POForeign Key to a table with 2 columns primary key (CompositeId)
 

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  1. POForeign Key to a table with 2 columns primary key (CompositeId)
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    <p>I've defined the primary key as following:</p> <pre><code>CompositeId() .KeyProperty(x =&gt; x.Id) .KeyProperty(x =&gt; x.Type); </code></pre> <p>I've tried the following:</p> <pre><code>References(x =&gt; x.EntityWith2ColsPK); </code></pre> <p>And failed with: </p> <blockquote> <p>Foreign key (Fk_MyEntity_EntityWith2ColsPK:MyEntities [Fk_EntityWith2ColsPK])) must have same number of columns as the referenced primary key (EntityWith2ColsPKs [Id, Type])</p> </blockquote> <p>How can I reference EntityWith2ColsPK from another entity?</p> <hr> <p><strong>Update:</strong></p> <p>I've tried the following (according to AlfeG's comment):</p> <pre><code>HasMany&lt;EntityWith2ColsPK&gt;(x =&gt; x.EntityWith2ColsPK).KeyColumns.Add("Id", "Type").Cascade.All(); </code></pre> <p>Which failed with:</p> <blockquote> <p>Custom type does not implement UserCollectionType: EntityWith2ColsPK</p> </blockquote> <p>But anyway I don't want a 1 to many relation, I want a 1 to 1 relation. Still, I can't make either of them work.</p> <p>Also, I've tried:</p> <pre><code>HasOne&lt;EntityWith2ColsPK&gt;(x =&gt; x.EntityWith2ColsPK).PropertyRef(x =&gt; x.Id).PropertyRef(x =&gt; x.Type); </code></pre> <p>Which fails with:</p> <blockquote> <p>NHibernate.MappingException : property not found: Type on entity EntityWith2ColsPK</p> </blockquote> <p>What can I do for this to really work?</p> <hr> <p>I managed to achieve something in the db.. but yet, for some reason I suspect it maps the property "Type" twice, because I want it to be both part of the Primary Key, and part of the Foreign Key.. This is what I did:</p> <pre><code>References(x =&gt; x.EntityWith2ColsPK).Columns("EntityWith2ColsPKId", "Type").Formula("Id = :EntityWith2ColsPKId AND Type = :Type"); </code></pre> <p>But I received the following exception:</p> <blockquote> <p>System.IndexOutOfRangeException : Invalid index 8 for this SqlParameterCollection with Count=8.</p> </blockquote> <p>Because the mapping of this entity is same as EntityWith2ColsPK:</p> <pre><code>CompositeId() .KeyProperty(x =&gt; x.Id) .KeyProperty(x =&gt; ((ILocalizedEntity) x).Language); </code></pre> <p>HELP!</p>
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    1. USAdam Tal
    1. USAdam Tal
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    1. This table or related slice is empty.
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      1. POForeign Key to a table with 2 columns primary key (CompositeId)
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    2. VO
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      1. POForeign Key to a table with 2 columns primary key (CompositeId)
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    1. COIt's duplicate question http://stackoverflow.com/questions/4460648/how-to-map-composite-primary-key-to-foreign-in-fluent-nhibernate so You can find anser by this link
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      1. POForeign Key to a table with 2 columns primary key (CompositeId)
      1. USAlfeG
    2. COThis doesn't solve my problem :(
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      1. POForeign Key to a table with 2 columns primary key (CompositeId)
      1. USAdam Tal
 

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