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PONhibernate return a specific type of union subclass in a QueryOver with join
 

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  1. PONhibernate return a specific type of union subclass in a QueryOver with join
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    <p>This is my current nhibenate query</p> <pre><code> MappedHSPItemDto itemDtoAlias = null; TItem itemAlias = default(TItem); return Session.QueryOver&lt;TMapItem&gt;() .JoinAlias(x =&gt; x.Item, () =&gt; itemAlias, JoinType.InnerJoin) .Where(x =&gt; x.HealthServiceProvider == hsp) .SelectList(list =&gt; list .Select(x =&gt; x.Id).WithAlias(() =&gt; itemDtoAlias.Id) .Select(x =&gt; x.Version).WithAlias(() =&gt; itemDtoAlias.Version) .Select(x =&gt; x.HSPItemCode).WithAlias(() =&gt; itemDtoAlias.HSPItemCode) .Select(x =&gt; x.HSPItemName).WithAlias(() =&gt; itemDtoAlias.HSPItemName) .Select(x =&gt; itemAlias.Code).WithAlias(() =&gt; itemDtoAlias.CirrusItemCode) .Select(x =&gt; itemAlias.Name).WithAlias(() =&gt; itemDtoAlias.CirrusItemName) ) .TransformUsing(Transformers.AliasToBean&lt;MappedHSPItemDto&gt;()).List&lt;MappedHSPItemDto&gt;(); </code></pre> <p>which returns this sql query</p> <pre><code>SELECT this_.Id as y0_, this_.Version as y1_, this_.HSPItemCode as y2_, this_.HSPItemName as y3_, itemalias1_.Code as y4_, itemalias1_.Name as y5_ FROM HSPMedicineMapping this_ inner join ( select Id, Version, Code, Name, GenericName, 1 as clazz_ from Medicine union all select Id, Version, Code, Name, null as GenericName, 2 as clazz_ from AssetEquipment union all select Id, Version, Code, Name, null as GenericName, 3 as clazz_ from [Procedure] union all select Id, Version, Code, Name, null as GenericName, 4 as clazz_ from Supply union all select Id, Version, Code, Name, null as GenericName, 5 as clazz_ from Examination union all select Id, Version, Code, Name, null as GenericName, 6 as clazz_ from OtherItem ) itemalias1_ on this_.ItemId=itemalias1_.Id WHERE this_.HealthServiceProviderId = @p0; @p0 = 12 [Type: Int64 (0)] </code></pre> <p>basically what is happening here is im joining to a unionsubclass and on the query its including all subclass of the Item type.</p> <p>Is there a way to just include the specific type of subclass in a query?</p> <p>im using mapping by code, below is the mapping for one of the subclass</p> <pre><code>public class MedicineMap : UnionSubclassMapping&lt;Medicine&gt; { public MedicineMap() { Property(p =&gt; p.Code, Rules.CodeRule); Property(p =&gt; p.Name, Rules.StrLength255AndNotNull); Property(p =&gt; p.GenericName, Rules.StrLength400AndNullable); Bag(x =&gt; x.HMOMedicineMappings, bag =&gt; { bag.Inverse(true); bag.Key(k =&gt; k.Column(col =&gt; col.Name("ItemId"))); }, a =&gt; a.OneToMany()); Bag(x =&gt; x.HSPMedicineMappings, bag =&gt; { bag.Inverse(true); bag.Key(k =&gt; k.Column(col =&gt; col.Name("ItemId"))); }, a =&gt; a.OneToMany()); } } </code></pre> <p>Here is my entities</p> <pre><code>public abstract class Item : EntityBase { public virtual string Code { get; set; } public virtual string Name { get; set; } } public class Medicine : Item { public Medicine() { HSPMedicineMappings = new List&lt;HSPMedicineMapping&gt;(); HMOMedicineMappings = new List&lt;HMOMedicineMapping&gt;(); } public virtual string GenericName { get; set; } public virtual IList&lt;HSPMedicineMapping&gt; HSPMedicineMappings { get; set; } public virtual IList&lt;HMOMedicineMapping&gt; HMOMedicineMappings { get; set; } } public class AssetEquipment : Item { public AssetEquipment() { HSPAssetEquipmentMappings = new List&lt;HSPAssetEquipmentMapping&gt;(); HMOAssetEquipmentMappings = new List&lt;HMOAssetEquipmentMapping&gt;(); } public virtual IList&lt;HSPAssetEquipmentMapping&gt; HSPAssetEquipmentMappings { get; set; } public virtual IList&lt;HMOAssetEquipmentMapping&gt; HMOAssetEquipmentMappings { get; set; } } public abstract class HSPItemMapping : EntityBase { public virtual HealthServiceProvider HealthServiceProvider { get; set; } public virtual string HSPItemCode { get; set; } public virtual string HSPItemName { get; set; } public virtual Item Item { get; set; } } public class HSPMedicineMapping : HSPItemMapping { } </code></pre>
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    1. USreggieboyYEAH
    1. USreggieboyYEAH
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    1. COif TMapItem is the specific type NH will only query the table of TMapItem
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      1. PONhibernate return a specific type of union subclass in a QueryOver with join
      1. USFiro
    2. COYep for the TMapItem it works fine, but the problem here is the part where TMapItem joins to a child table which is the x.Item, Item is an abstract base class. Which has several subclasses so whenever i join it generates a union all query for all subclasses.
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      1. PONhibernate return a specific type of union subclass in a QueryOver with join
      1. USreggieboyYEAH
 

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