/// <summary>
/// Removes a EntityLink item to the collection.
/// </summary>
/// <param name="item">The item to remove.</param>
public void Remove(EntityLink item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
List.Remove(item);
}
/// <summary>
/// Constructor.
/// </summary>
public EntityLinkEventArgs(EntityLink entityLink)
{
if (entityLink == null)
{
throw new ArgumentNullException("entityLink");
}
_entityLink = entityLink;
}
/// <summary>
/// Adds a EntityLink instance to the collection.
/// </summary>
/// <param name="item">The item to add.</param>
public void Insert(int index, EntityLink item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
List.Insert(index, item);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="link"></param>
public EntityLinkViewProperty(EntityLink link) : base(link.EntityType)
{
if (link == null)
{
throw new ArgumentNullException("link");
}
_link = link;
}
/// <summary>
/// Adds a EntityLink instance to the collection.
/// </summary>
/// <param name="item">The item to add.</param>
public int Add(EntityLink item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
int index = List.Add(item);
this.OnLinkAdded(new EntityLinkEventArgs(item));
return(index);
}
/// <summary>
/// Discovers if the given item is in the collection.
/// </summary>
/// <param name="item">The item to find.</param>
/// <returns>Returns true if the given item is in the collection.</returns>
public bool Contains(EntityLink item)
{
if (IndexOf(item) == -1)
{
return(false);
}
else
{
return(true);
}
}
/// <summary>
/// Gets the parent for a given item.
/// </summary>
/// <param name="entity"></param>
/// <param name="link"></param>
/// <returns></returns>
object IEntityPersistence.GetParent(object entity, string linkName, string[] parentFieldNames)
{
if (entity == null)
{
throw new ArgumentNullException("entity");
}
if (linkName == null)
{
throw new ArgumentNullException("linkName");
}
if (linkName.Length == 0)
{
throw new ArgumentOutOfRangeException("'linkName' is zero-length.");
}
if (parentFieldNames == null)
{
throw new ArgumentNullException("parentFieldNames");
}
// get the link...
if (EntityType == null)
{
throw new InvalidOperationException("EntityType is null.");
}
EntityLink link = this.EntityType.Links.GetLink(linkName, OnNotFound.ThrowException);
if (link == null)
{
throw new InvalidOperationException("link is null.");
}
if (!(link is ChildToParentEntityLink))
{
throw new InvalidOperationException(string.Format("Link '{0}' is a '{1}', not child-to-parent.", linkName, link.GetType()));
}
// get the field names...
EntityField[] parentFields = this.EntityType.Fields.GetFields(parentFieldNames, OnNotFound.ThrowException);
if (parentFields == null)
{
throw new ArgumentNullException("parentFields");
}
if (parentFieldNames.Length != parentFields.Length)
{
throw new InvalidOperationException(string.Format("Length mismatch for 'parentFieldNames' and 'parentFields': {0} cf {1}.", parentFieldNames.Length, parentFields.Length));
}
// defer...
return(this.GetParent(entity, (ChildToParentEntityLink)link, parentFields));
}
/// <summary>
/// Returns the index of the item in the collection.
/// </summary>
/// <param name="item">The item to find.</param>
/// <returns>The index of the item, or -1 if it is not found.</returns>
public int IndexOf(EntityLink item)
{
return(List.IndexOf(item));
}