NHibernate Lazy Loading = false

Question

I set lazy="false" to a collection and fetch="select", but I dont understand why NHibernate keeps loading my collection.

This is my mapping:

 <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
    namespace="Ortopedia.Entidades" assembly="Ortopedia">
  <class name="Especialidade" table="TB_ESPECIALIDADE">
    <id name="Id">
      <column name="ID_ESPECIALIDADE" not-null="true" />
      <generator class="increment" />
    </id>
    <property name="Nome" column="NOME" not-null="true" length="50" />
    <set inverse="true" name="SubEspecialidades" cascade="none" fetch="select" lazy="false" >
      <key column="ID_ESPECIALIDADE" />
      <one-to-many class="Ortopedia.Entidades.SubEspecialidade" />
    </set>
  </class>
</hibernate-mapping>

And this is the code I'm using to list the data:

ICriteria criteria = session.CreateCriteria(typeof(T));
criteria.SetMaxResults(1000);
IList<T> list = criteria.List<T>();
return list;

NHibernate loads my SubEspecialidades property, I dont want it to load. What am I missing here?

t3sture · Accepted Answer · 2014-04-04 06:32:32Z

4

If you don't want SubEspecialidades to load initially, you should be using:

lazy="true"

Lazy loading means that the collection will not be fetched from the database until you access it in your code. So if you set it to false, it will be fetched along with its parent object (whatever owns the collection).

edited Apr 4, 2014 at 6:32

answered Apr 4, 2014 at 5:18

t3sture

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5 Comments

t3sture Over a year ago

@slavoo Thanks. I'm still new to stackoverflow. Forgot to use a code block.

Radim Köhler Over a year ago

Really not sure, why the downvote here?!? I would say that t3sture is correct. So +1 from me, because I'd advise the same.

t3sture Over a year ago

I think he was just downvoting me as a corrective measure, to make sure I use code blocks in the future. I'd rather believe that than believe that he's just being mean.

Rippo Over a year ago

+1 - to down voter why does lazy="true" have to be in a code block? Especially as the OP has his emphasised..

Raiiy Over a year ago

Actually, I don't want the collection to load with my object and I don't want it to be lazy too. I don't want NHibernate doing selects, I want the collection to be empty and, when I want the data, I do a fetch in my criteria. Is it possible?

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