流利的NHibernate，具有键/值列关系

Question

I'm trying to create a table that will work as additional data for another table.

• For example I have my main table called Person . This table will contain zero or many dynamic records (Free text key and free text value) from a table called PersonDynamicInfo .

  public PersonMap(){ Id(x => x.Id); Table("Person"); Map(x => x.Name);

  HasMany(x => x.PersonDynamicInfo) .KeyColumn("Id") .Access.CamelCaseField(Prefix.Underscore) .AsSet() .Cascade.AllDeleteOrphan() .Not.KeyNullable(); }

  public PersonDynamicInfo(){ Id(x => x.Id); Table("PersonDynamicInfo"); Map(x => x.Key);
  Map(x => x.Value); }

What I want to achieve is the following:

• When I access the Person object, I want to be able to edit Person.PersonDynamicInfo so that the information on this table is the same as the object. Let's say for example that I create a person with a record on PersonDynamicInfo with the values: " Key: A | Value : TEST ". When I access the Person object I will remove all the Person.PersonDynamicInfo (from the collection) and add a new one: " Key: B | Value : TEST " and Save() this Person object. What will happen is that the Person.PersonDynamicInfo will contain the two records instead of only containing the last one.

Is there way I can achieve this without manually deleting the unused records on PersonDynamicInfo?

Many thanks!

Answer 1

I think what you need is a reference to the Person in your PersonDynamicInfo mapping:

public PersonDynamicInfo(){ 
    Id(x => x.Id); 
    Table("PersonDynamicInfo"); 
    Map(x => x.Key);
    Map(x => x.Value);
    References(x => x.Person, "PersonId").Cascade.All(); 
} 

I may have misunderstood your question, however.