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DesignID, ItemID or partnumber ? - Printable Version

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DesignID, ItemID or partnumber ? - Magnus Forsberg - 2013-09-14

I wrote this at the Part Tracker:

Isn't it time for some sort of definitive definition here?

7-digit number <=> ItemID <=> Part Physical_Colour <=> beginning with _ (underscore)
5-digit number <=> DesignID <=> Part Alias <=> beginning with = (equal to)
old design in a new mould, leading to a new partnumber, is a Part Alias <=> beginning with = (equal to)
partnumber only used for transparent parts <=> Part Alias <=> beginning with = (equal to)
partnumber only used for laquered parts <=> Part Alias <=> beginning with = (equal to)

Or am I totally wrong? I still find the difference between itemID, designID and our partnumbers very confusing.

and Philo answered:
Quote:Magnus, I'd suggest to put this on the forum for future reference...
Basically this is OK. A design number is _mainly_ a mold number, while item number is a shape in a specified color.
Unfortunately, LEGO also use 5 digits design numbers for patterned parts and sometimes (eg. hoses) for specific colors.



Re: DesignID, ItemID or partnumber ? - Michael Heidemann - 2013-09-14

Thanks for this Magnus. I had just the same idea this morning, but you where faster Smile

Code:
partnumber only used for transparent parts <=> Part Alias <=> beginning with = (equal to)
partnumber only used for laquered parts <=> Part Alias <=> beginning with = (equal to)

Just the above I would like also to have more clear if possible. I like to build with the correct design id, but if it comes to transparent parts, I do not not which one should be taken. Maybe a future app can give me that information. MLCad can not and I do not recommend to make all work with MLCad, as it does not support so much of our efforts to help the user identifying a part he needs.


Re: DesignID, ItemID or partnumber ? - Santeri Piippo - 2013-09-14

I still strongly think it's a bad idea to bloat the library with Item ID parts simply out of the sheer amount of Item IDs out there. At least for the typical case of single-color item ID, these should be exported to a textual database like how I outlined it here. I'd keep the Physical_Color parts for special cases like 4285879.dat.


Re: DesignID, ItemID or partnumber ? - Michael Heidemann - 2013-09-14

If any of our tools would use such a database I would be fine with that. But as far as I can see, there is no tool that do this for me. So building with parts according the list provided by TLG for each set is impossible without that files.

But those parts should be located in another directory IMHO.


Re: DesignID, ItemID or partnumber ? - Philippe Hurbain - 2013-09-14

Quote:I still strongly think it's a bad idea to bloat the library with Item ID parts simply out of the sheer amount of Item IDs out there.
...and I strongly agree with you Wink
Fortunately, the foundation of such a database already exists, courtesy of Brickset... http://www.brickset.com/export/parts/
To make that database fully usable, there is still a huge work to do to create all part aliases, and especially for patterned parts. But at least it's more manageable...
As for using this database, I'd like to see an evolution of LDFind (hint, hint, Mike Wink


Re: DesignID, ItemID or partnumber ? - Michael Heidemann - 2013-09-14

Code:
As for using this database, I'd like to see an evolution of LDFind (hint, hint, Mike ;)

Which way do you think ?


Re: DesignID, ItemID or partnumber ? - Philippe Hurbain - 2013-09-14

More thinking probably needed, but...
I see split window design, with the same kind of text search available, one window using Brickset database (which is more or less directly LEGO service one), the other identical as the one we have today. If there is a design number match between the two databases, then both window halves display all available information.


Re: DesignID, ItemID or partnumber ? - Magnus Forsberg - 2013-09-14

Are there to many different Part Alias?
Should there be a different qualifier for transparent and/or laquered parts?


Re: DesignID, ItemID or partnumber ? - Michael Heidemann - 2013-09-14

I just had a look to that link. It generates a simple question to me:
How should I match the colournames in that file to LDraw?
Please see attached list of unique colour names.


Re: DesignID, ItemID or partnumber ? - Michael Heidemann - 2013-09-14

Maybe not too much Smile but on building process I do not see currently which one i use, for transparent or for laquered parts.