public override T GetModel <T>(string fieldName, SPModelCollection parentCollection)
{
if (this.ListItemAdapater != null)
{
return(this.ListItemAdapater.GetModel <T>(fieldName, parentCollection));
}
return(base.GetModel <T>(fieldName, parentCollection));
}
/// <summary>
/// Gets a model object from a Lookup field.
/// The same instance representing the same foreign list item is returned when the same <paramref name="parentCollection"/> is supplied.
/// </summary>
/// <typeparam name="T">Type of model object.</typeparam>
/// <param name="fieldName">Field name.</param>
/// <param name="parentCollection">An <see cref="SPModelCollection"/> object where the returned model object is cached in the collection.</param>
/// <returns>Value in the specified field represented by a model object.</returns>
public virtual T GetModel <T>(string fieldName, SPModelCollection parentCollection)
{
object value = this[fieldName];
if (value != null)
{
try {
SPFieldLookupValue u = new SPFieldLookupValue(value.ToString());
return(parentCollection.TryGetCachedModel <T>(this, fieldName, u.LookupId).FirstOrDefault());
} catch { }
}
return(default(T));
}
/// <summary>
/// Gets a collection of model objects from a Lookup field.
/// The same instance representing the same foreign list item is returned when the same <paramref name="parentCollection"/> is supplied.
/// </summary>
/// <typeparam name="T">Type of model object.</typeparam>
/// <param name="fieldName">Field name.</param>
/// <param name="parentCollection">An <see cref="SPModelCollection"/> object where the returned model object is cached in the collection.</param>
/// <returns>A collection of model objects.</returns>
protected virtual IList <T> GetModelCollectionInternal <T>(string fieldName, SPModelCollection parentCollection)
{
Collection <T> collection = new Collection <T>();
object value = this[fieldName];
if (value != null)
{
try {
SPFieldLookupValueCollection values = CommonHelper.TryCastOrDefault <SPFieldLookupValueCollection>(value) ?? new SPFieldLookupValueCollection(value.ToString());
foreach (T item in parentCollection.TryGetCachedModel <T>(this, fieldName, values.Select(u => u.LookupId).ToArray()))
{
collection.Add(item);
}
} catch { }
}
return(collection);
}
public object Execute()
{
if (this.Manager == null)
{
throw new InvalidOperationException();
}
if (this.Manager.ImplicitQueryMode == SPModelImplicitQueryMode.None)
{
return(projector(emptyArray, args));
}
SPModelQuery query = ApplyFilters();
if (query.Expression == Caml.False)
{
return(projector(emptyArray, args));
}
if (executeMode == SPModelQueryExecuteMode.Count)
{
return(this.Manager.GetCount(query));
}
SPModelCollection collection = this.Manager.GetItems(query);
return(projector(collection, args));
}
protected override IList <T> GetModelCollectionInternal <T>(string fieldName, SPModelCollection parentCollection)
{
if (this.ListItemAdapater != null)
{
return(this.ListItemAdapater.GetModelCollection <T>(fieldName, parentCollection));
}
return(base.GetModelCollectionInternal <T>(fieldName, parentCollection));
}
public ReadOnlyCollection <T> GetModelCollectionReadOnly <T>(string fieldName, SPModelCollection parentCollection)
{
return(new ReadOnlyCollection <T>(GetModelCollectionInternal <T>(fieldName, parentCollection)));
}
public IList <T> GetModelCollection <T>(string fieldName, SPModelCollection parentCollection)
{
return(CreateNotifyingCollection(fieldName, GetModelCollectionInternal <T>(fieldName, parentCollection), (s, e) => OnModelCollectionChanged(s, fieldName)));
}
