/// <summary>
/// Deletes an entity.
/// </summary>
/// <param name="entity">The entity to delete.</param>
/// <returns>The number of items affected.</returns>
public int Delete(T entity)
{
_Mutex.WaitOne();
try
{
//delete by identity
int identityOrdinal = _Aspect.IdentityOrdinal;
if (identityOrdinal >= 0)
{
object identityValue = _Aspect[identityOrdinal].GetValue(entity);
if (!ValidationHelper.IsNullOrEmpty(identityValue))
{
return(_Engine.Delete(_Aspect, new ClassFilterTerm(_Aspect, identityOrdinal, identityValue)));
}
}
//delete by unique member
foreach (int uniqueOrdinal in _Aspect.UniqueMemberOrdinals)
{
object uniqueValue = _Aspect[uniqueOrdinal].GetValue(entity);
if (!ValidationHelper.IsNullOrEmpty(uniqueValue))
{
return(_Engine.Delete(_Aspect, new ClassFilterTerm(_Aspect, uniqueOrdinal, uniqueValue)));
}
}
//has primary keys
if (_Aspect.HasPrimaryKey)
{
return(_Engine.Delete(_Aspect, _Aspect.CreatePrimaryKeyFilter(entity)));
}
else
{
//can't delete
throw new ArgumentException("Unable to find members to delete " + _Aspect, "entity");
}
}
finally
{
_Mutex.ReleaseMutex();
}
}
/// <summary>
/// Executes the delete.
/// </summary>
/// <returns>The number of items affected.</returns>
public int Delete()
{
return(_Storage.Delete(this._Aspect, this._WhereFirst));
}