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PONhibernate: Foreign key must have same number of columns as the referenced primary key
 

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  1. PONhibernate: Foreign key must have same number of columns as the referenced primary key
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    <p>I'm confused with this situation. Having these two classes:</p> <pre><code>public class TxType { public TxType() { Payments = new List&lt;Payment&gt;(); } public string TxTypeId { get; set; } public string TxCode { get; set; } public IList&lt;Payment&gt; Payments { get; set; } public string Description { get; set; } } public class Payment { public Payment() { } public string Trn { get; set; } public TxType TxTypeId { get; set; } public string TxCode { get; set; } public System.Nullable&lt;decimal&gt; Amount { get; set; } public System.Nullable&lt;System.DateTime&gt; DateStamp { get; set; } } </code></pre> <p>TxType table have two PK (TxTypeId, TxCode), and both are FK in Payment Table. These are my mappings:</p> <pre><code> &lt;class name="TxType" table="TxType" lazy="false" &gt; &lt;composite-id&gt; &lt;key-property name="TxTypeId" column="TxTypeId" /&gt; &lt;key-property name="TxCode" column="TxCode" /&gt; &lt;/composite-id&gt; &lt;property name="Description"&gt; &lt;column name="Description" sql-type="nvarchar" not-null="false" /&gt; &lt;/property&gt; &lt;bag name="Payments" inverse="true" cascade="none"&gt; &lt;key&gt; &lt;column name="TxTypeId" /&gt; &lt;column name="TxCode" /&gt; &lt;/key&gt; &lt;one-to-many class="MyProject.Nhibernate.Repository.Payment" not-found="ignore" /&gt; &lt;/bag&gt; &lt;/class&gt; &lt;class name="Payment" table="Payment" lazy="false" &gt; &lt;id name="Trn"&gt; &lt;generator class="identity" /&gt; &lt;/id&gt; &lt;many-to-one insert="false" update="false" lazy="false" name="TxTypeId"&gt; &lt;column name="TxTypeId" sql-type="varchar" not-null="false" /&gt; &lt;/many-to-one&gt; &lt;property name="TxTypeId"&gt; &lt;column name="TxTypeId" sql-type="varchar" not-null="false" /&gt; &lt;/property&gt; &lt;many-to-one insert="false" update="false" lazy="false" name="TxCode"&gt; &lt;column name="TxCode" sql-type="varchar" not-null="false" /&gt; &lt;/many-to-one&gt; &lt;property name="TxCode"&gt; &lt;column name="TxCode" sql-type="varchar" not-null="false" /&gt; &lt;/property&gt; &lt;property name="Amount"&gt; &lt;column name="Amount" sql-type="decimal" not-null="false" /&gt; &lt;/property&gt; &lt;property name="DateStamp"&gt; &lt;column name="DateStamp" sql-type="datetime" not-null="false" /&gt; &lt;/property&gt; &lt;/class&gt; </code></pre> <p>And I'm stuck with this error: Foreign key (FKF4FA0208CDBA724F:Payment [TxTypeId])) must have same number of columns as the referenced primary key (TxType [TxTypeId, TxCode]).</p> <p>Thanks!</p> <p>Okay, i figured out by adding these lines in Payment mapping:</p> <pre><code>&lt;many-to-one name="TxType" class="MyProject.Nhibernate.Repository.TxType" insert="false" update="false" lazy="false" &gt; &lt;column name="TxTypeId" sql-type="varchar" not-null="false" /&gt; &lt;column name="TxCode" sql-type="varchar" not-null="false" /&gt; &lt;/many-to-one&gt; </code></pre> <p>Thanks!</p>
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    1. PTQuestion
    1. USPayjo
    1. USPayjo
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    1. COnot axactly an answer to the question but if you set `<bag name="Payments" inverse="true">` and `<many-to-one name="TxType" insert="false" update="false">` you are not able to add any payments to transactions
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      1. PONhibernate: Foreign key must have same number of columns as the referenced primary key
      1. USFiro
 

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