You are using the wrong model. I have solved a similar problem by using
[ActiveRecord]
public class Document
{
[HasMany]
public IList<DocumentVersion> Versions {get;set;}
[BelongsTo]
public DocumentVersion LatestVersion {get;set;}
public DocumentVersion CreateNewVersion()
{
// logic for creating new DocumentVersion
// also updates LatestVersion and Versions list
}
}
[ActiveRecord]
public class DocumentVersion
{
[BelongsTo]
public Document Document {get;set;}
}
If you really have to use one class only, try this:
[ActiveRecord]
public class Document
{
[BelongsTo]
public Document Parent {get;set;}
[BelongsTo]
public Document OriginalVersion {get;set;}
[BelongsTo]
public Document LatestVersion {get;set;}
public Document CreateNewVersion()
{
// logic for creating new Document version
// also updates LatestVersion on all ancestors
}
}
-Markus
2010/3/18 chitech <[email protected]>:
> Alo
>
> I have a document object which can have one parent document and one
> child document. A chain like this:
>
> first version document (no parent, one child) - second version
> document (one parent, one child) - third version document (one parent,
> no child)
>
> I have this mapping:
>
> [ActiveRecord(Lazy = true)]
> public class Registration
> {
> [BelongsTo("ParentDocumentId")]
> public virtual Document ParentDocument { get; set; }
>
> [HasMany]
> public virtual IList<Document> ChildDocuments { get; set; }
>
> public virtual Document ChildDocument
> {
> get
> {
> return ChildDocuments != null && ChildDocuments.Count
> == 1 ? ChildDocuments[0] : null;
> }
> set
> {
> if (ChildDocuments == null) ChildDocuments = new
> List<Document>();
> ChildDocuments.Add(value);
> }
> }
> }
>
> How can I make a query to get the last Document (third version
> document). I can't really figure out how to use HQL or criteria to
> solve this problem.
>
> Thx in advance
>
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