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Is it possible to use CreateCriteria on <component>?

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-dav

Post subject: Is it possible to use CreateCriteria on <component>?

Posted: Fri Sep 30, 2005 5:13 am

Newbie

Joined: Wed Aug 31, 2005 8:23 am
Posts: 5
Location: Belgium

Hello,

I'm trying to use createCriteria API on <component> property.

I made several tests :
My component is ValidityPeriod and it contains the End Property.

Code:

ICriteria crit=NHibernateSession.CreateCriteria(typeof(DomainModel.MainObject));
crit.Add(Expression.Gt("ValidityPeriod.End",beginDate));

Then, it returns the error code :

Quote:

could not resolve property:ValidityPeriod.End

Using the typical way for association :

Code:

crit.CreateCriteria("ValidityPeriod").Add(Expression.Gt("End",beginDate));

it returns :

Quote:

not an association path: ValidityPeriod)

IS there a way to use createCriteria for Component?
or must I use HQL query or session.find ?

Thanks,
David

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-dav

Post subject:

Posted: Thu Oct 13, 2005 2:29 pm

Newbie

Joined: Wed Aug 31, 2005 8:23 am
Posts: 5
Location: Belgium

I finally manage to use createCriteria on my component by implementing my own Expression object.

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anelka

Post subject:

Posted: Wed Jan 23, 2008 7:55 am

Newbie

Joined: Wed Jan 23, 2008 7:25 am
Posts: 2

I've also had problem with querying components.

While searching for solution, i've found this page. But in my case it didn't help.

In Cat.hbm.xml

Code:

<component name="KittensList" class="KittensList" >
   <bag name="DataList" inverse="true" cascade="all-delete-orphan" >
      <key column="CatID" />
      <one-to-many class="Kitty" />
  </bag>
</component>

In my case, search should look like this:

Code:

ICriteria crit = session.CreateCriteria(typeof(Cat));
crit.CreateCriteria("KittensList.DataList")
        .Add(Expression.Eq("KittyId", 3));
cats = crit.List();

Last edited by anelka on Wed Jan 23, 2008 8:00 am, edited 1 time in total.

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anelka

Post subject:

Posted: Wed Jan 23, 2008 7:56 am

Newbie

Joined: Wed Jan 23, 2008 7:25 am
Posts: 2

I use it in NH 1.2

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