/// <summary>
/// Called when some attribute is inserted to the list.
/// </summary>
/// <param name="entityAttr">The attribute.</param>
/// <param name="index">The index.</param>
protected virtual void OnEntityAttrInsertion(MetaEntityAttr entityAttr, int index)
{
entityAttr.Entity = _entity;
if (_entity.Model != null)
{
entityAttr.OnModelAssignment();
}
}
/// <summary>
/// Assigns the default ID for entity attribute.
/// </summary>
/// <param name="attr">The EntityAttr object.</param>
public virtual void AssignEntityAttrID(MetaEntityAttr attr)
{
string id = "";
if (attr.IsVirtual)
{
id = "VEA_" + GetNextEntityAttrId().ToString();
}
else
{
string baseID = attr.Expr.ToIdentifier();
id = baseID;
int N = 1;
while (EntityRoot.FindAttributeById(id) != null)
{
N++;
id = baseID + N.ToString();
}
}
attr.Id = id;
}
/// <summary>
/// Inserts an element into the <see cref="T:System.Collections.ObjectModel.Collection`1"/> at the specified index.
/// </summary>
/// <param name="index">The zero-based index at which <paramref name="item"/> should be inserted.</param>
/// <param name="item">The object to insert. The value can be null for reference types.</param>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="index"/> is less than zero.
/// -or-
/// <paramref name="index"/> is greater than <see cref="P:System.Collections.ObjectModel.Collection`1.Count"/>.
/// </exception>
protected override void InsertItem(int index, MetaEntityAttr item)
{
base.InsertItem(index, item);
OnEntityAttrInsertion(item, index);
}