protected static void CheckNotMember(DataIdentityList dataIdentities,
IDataIdentity dataIdentity,
String listName)
{
if (IsNotNull(dataIdentities.GetById(dataIdentity.GetId())))
{
throw new DataArgumentException(dataIdentity.GetDataType().ToString() +
" " + dataIdentity.GetIdentifier() +
" is already a member of " + listName);
}
}
protected static Int32 GetId(IDataIdentity dataIdentity)
{
if (IsNull(dataIdentity))
{
return(NO_ID);
}
else
{
return(dataIdentity.GetId());
}
}
public Int32 GetIndex(IDataIdentity dataIdentity)
{
Int32 index;
for (index = 0; index < this.Count; index++)
{
if ((((IDataIdentity)(this[index])).GetDataType() == dataIdentity.GetDataType()) &&
(((IDataIdentity)(this[index])).GetId() == dataIdentity.GetId()))
{
return(index);
}
}
return(-1);
}
public static Boolean AreEqual(IDataIdentity object1, IDataIdentity object2)
{
// Check referenses.
if (IsNull(object1) && IsNull(object2))
{
return(true);
}
if (IsNull(object1) || IsNull(object2))
{
return(false);
}
// Check type.
if (object1.GetDataType() != object2.GetDataType())
{
return(false);
}
// Check id.
return(object1.GetId() == object2.GetId());
}