OK --- IT WORKS with this particular implementation of property:
public class Private
{
public Category[] PrivateCategory { get; set; }
private IList<Category> _PrivateCategoryList = null;
public IList<Category> PrivateCategories
{
get
{
if (_PrivateCategoryList == null)
{
_PrivateCategoryList = new
List<Category>(PrivateCategory);
}
return _PrivateCategoryList;
}
set
{
_PrivateCategoryList = value;
if (_PrivateCategoryList != null)
{
PrivateCategory = new
Category[_PrivateCategoryList.Count];
for (int i = 0; i < _PrivateCategoryList.Count; i+
+)
{
PrivateCategory[i] = _PrivateCategoryList[i];
}
}
}
}
}
Can you tell me why, it works?
One critical step is " _PrivateCategoryList = value;" in the setter...
may be ..
But tell me what you think ..
This was cracked in 7 hrs ... ;)
On May 24, 11:47 am, sando <[email protected]> wrote:
> Hello Ricardo,
>
> thanks for dropping by the question .... Alas, it still does not work :
> (
>
> I tried to find if I am returning List instead of IList, but I checked
> everything is fine, still nhibernate throws the sameexception.
>
> I again re-iterate here, that if I move the component outside and
> flatten the class/mapping, the same code works fine.
> But it is not a feasible solution in our context. Could you please
> read the code below, and point me where I am doing wrong.
>
> I am pasting a sample code to replicate the problem:
>
> ----- STOCK CLASS ----
> public class Stock
> {
> public int? stockId { get; set; }
> public string stockCode { get; set; }
> public string stockName { get; set; }
> public IList<Category> PublicCategory { get; set; }
> public Private Private { get; set; }
> }
>
> public class Private
> {
> public Category[] PrivateCategory { get; set; }
>
> // This is required as I want to map the array as a <bag>
> because our data model does not have index column
> private IList<Category> _PrivateCategoryList = null;
>
> // This property is only for the mapping and the "private
> IList<Category> _PrivateCategoryList" gets filled when nhibernate
> calls the property
> public IList<Category> PrivateCategories
> {
> get
> {
> if (_PrivateCategoryList == null)
> {
> _PrivateCategoryList = new List<Category>();
>
> foreach (Category c in PrivateCategory)
> {
> _PrivateCategoryList.Add(c);
> }
> }
>
> return _PrivateCategoryList;
> }
> set
> {
> if (value != null)
> {
> PrivateCategory = new Category[value.Count];
> for (int i = 0; i < value.Count; i++)
> {
> PrivateCategory[i] = value[i];
> }
> }
> }
> }
> }
>
> ----- STOCK MAPPING ------
>
> <class name="Stock" table="Stock" lazy="false">
> <id name="stockId" column="STOCK_ID">
> <generator class="native" />
> </id>
> <property name="stockCode" column="STOCK_CODE"/>
> <property name="stockName" column="STOCK_NAME"/>
>
> <bag name="PublicCategory" table="Stock_Category" cascade="all-
> delete-orphan" lazy="false" where="TYPE=0">
> <key column="STOCK_ID"/>
> <many-to-many class="Category" column="CATEGORY_ID"/>
> <sql-insert>
> INSERT INTO Stock_Category(Type, STOCK_ID,
> CATEGORY_ID)
> values(0,?,?)
> </sql-insert>
> </bag>
>
> <component name ="Private" class="Private">
> <bag name="PrivateCategories" table="Stock_Category"
> cascade="all-
> delete-orphan" lazy="false" where="TYPE=1">
> <key column="STOCK_ID"/>
> <many-to-many class="Category"
> column="CATEGORY_ID"/>
> <sql-insert>
> INSERT INTO Stock_Category(Type, STOCK_ID,
> CATEGORY_ID)
> values(1,?,?)
> </sql-insert>
> </bag>
> </component>
>
> </class>
>
> ---- CATEGORY CLASS ----------
> public class Category
> {
> public int? categoryId { get; set; }
> public string categoryName { get; set; }
> }
>
> ---- CATEGORY MAPPING ------------
> <class name="Category" table="Category" lazy="false">
> <id name="categoryId" column="CATEGORY_ID">
> <generator class="native" />
> </id>
> <property name="categoryName" column="CATEGORY_NAME"/>
>
> </class>
>
> -
> sando
>
> On May 23, 10:20 pm, Ricardo Peres <[email protected]> wrote:
>
>
>
>
>
>
>
> > That's because in your code you have a List<Something> instead of a
> > IList<Something> (notice the I).
>
> > On May 23, 12:27 pm, sando <[email protected]> wrote:
>
> > > Please read the detail of my problem, which is exactly similar
> > > to:http://www.mail-archive.com/[email protected]/msg18775.html
>
> > > Unable to cast object of type:
> > > 'System.Collections.Generic.List`1[ENTITY]' to type
> > > 'NHibernate.Collection.IPersistentCollection'.
>
> > > However, my properties return IList<T> and NOT List<T>.
>
> > > To summarize: I have a <bag> inside a <component> as nhibernate
> > > mapping.
> > > I always get a castexception.
>
> > > If I'm bringing <bag> mapping out of <component> tag, then save\update
> > > works fine.
>
> > > Is this a bug in nhibernate?
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