/// <summary>
/// Gets an object that represents the collection navigation property from this
/// entity to a collection of related entities.
/// </summary>
/// <typeparam name="TElement"> The type of elements in the collection. </typeparam>
/// <param name="navigationProperty"> The name of the navigation property. </param>
/// <returns> An object representing the navigation property. </returns>
public DbCollectionEntry <TEntity, TElement> Collection <TElement>(
string navigationProperty)
where TElement : class
{
Check.NotEmpty(navigationProperty, nameof(navigationProperty));
return(DbCollectionEntry <TEntity, TElement> .Create(this._internalEntityEntry.Collection(navigationProperty, typeof(TElement))));
}
/// <summary>
/// Returns the equivalent generic <see cref="T:System.Data.Entity.Infrastructure.DbCollectionEntry`2" /> object.
/// </summary>
/// <typeparam name="TEntity"> The type of entity on which the member is declared. </typeparam>
/// <typeparam name="TElement"> The type of the collection element. </typeparam>
/// <returns> The equivalent generic object. </returns>
public DbCollectionEntry <TEntity, TElement> Cast <TEntity, TElement>() where TEntity : class
{
MemberEntryMetadata entryMetadata = this._internalCollectionEntry.EntryMetadata;
if (!typeof(TEntity).IsAssignableFrom(entryMetadata.DeclaringType) || !typeof(TElement).IsAssignableFrom(entryMetadata.ElementType))
{
throw Error.DbMember_BadTypeForCast((object)typeof(DbCollectionEntry).Name, (object)typeof(TEntity).Name, (object)typeof(TElement).Name, (object)entryMetadata.DeclaringType.Name, (object)entryMetadata.ElementType.Name);
}
return(DbCollectionEntry <TEntity, TElement> .Create(this._internalCollectionEntry));
}
/// <summary>
/// Returns the equivalent generic <see cref="DbCollectionEntry{TEntity,TElement}" /> object.
/// </summary>
/// <typeparam name="TEntity"> The type of entity on which the member is declared. </typeparam>
/// <typeparam name="TElement"> The type of the collection element. </typeparam>
/// <returns> The equivalent generic object. </returns>
public new DbCollectionEntry <TEntity, TElement> Cast <TEntity, TElement>() where TEntity : class
{
var metadata = _internalCollectionEntry.EntryMetadata;
if (!typeof(TEntity).IsAssignableFrom(metadata.DeclaringType) ||
!typeof(TElement).IsAssignableFrom(metadata.ElementType))
{
throw Error.DbMember_BadTypeForCast(
typeof(DbCollectionEntry).Name,
typeof(TEntity).Name,
typeof(TElement).Name,
metadata.DeclaringType.Name,
metadata.ElementType.Name);
}
return(DbCollectionEntry <TEntity, TElement> .Create(_internalCollectionEntry));
}
/// <summary>
/// Gets an object that represents the collection navigation property from this
/// entity to a collection of related entities.
/// </summary>
/// <param name="navigationProperty"> The name of the navigation property. </param>
/// <returns> An object representing the navigation property. </returns>
public DbCollectionEntry Collection(string navigationProperty)
{
Check.NotEmpty(navigationProperty, "navigationProperty");
return(DbCollectionEntry.Create(_internalEntityEntry.Collection(navigationProperty)));
}
/// <summary>
/// Gets an object that represents the collection navigation property from this
/// entity to a collection of related entities.
/// </summary>
/// <param name="navigationProperty"> The name of the navigation property. </param>
/// <returns> An object representing the navigation property. </returns>
public DbCollectionEntry Collection(string navigationProperty)
{
Check.NotEmpty(navigationProperty, nameof(navigationProperty));
return(DbCollectionEntry.Create(this._internalEntityEntry.Collection(navigationProperty, (Type)null)));
}