denormalization transformation software manual.docx

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Bentley i-model View Builder

Contents1 I-model view and Bentley i-model View Builder.........................................2

2 Create, save and load i-model Views.........................................................3

3 Build View Table.........................................................................................5

3.1 D-Tree..................................................................................................5

3.2 Set u View !olumns..........................................................................."

3.3 #oll-u !olumns...................................................................................$

3.% Custom Columns.................................................................................&

3.5 'ivot !olumns......................................................................................(

3." )n-ivot Columns..............................................................................1*

% 'review #esult..........................................................................................11

5 Deloy i-model view +or DBC !!ess.....................................................12


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1 I-model view and Bentley i-model View Builder

i-model view is a set o+ dynami! virtual tables o+ i-model business data. It !an

1 be a !on!etual trans+ormation o+ i-model business data,2 rovide a relevant view o+ t/e data to an ali!ation by en!asulatin0

t/e !omleity o+ underlyin0 i-model s!/ema and ullin0 data +rom

multile !lasses, and3 be used to imlement VD odel View De4nition o+ a Standard

s!/ema lie I6C.

T/e +ollowin0 0ra/ s/ows /ow CBie Sa!e table is ulled +rom an I6C i-

model.

Bentley i-model View builder is a tool to !reate i-model views and review

view result. It starts wit/ an i-model based on its built-in s!/ema. T/e view is

ali!able to ot/er i-models wit/ t/e same s!/ema. T/e +ollowin0 0ra/

s/ows /ow t/e CBie Sa!e view is !reated +rom I6C i-model.

2 Create, save and load i-model Views view 4le is in t/e +ormat o+ ml. It !ontains all t/e table de4nitions based on

a !ertain s!/ema.

1 )se an i-model as re+eren!e to build t/e view. 7/en Bentley i-model

View Builder is oen, it will romt to oen an i-model to start.


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i-model s!/ema will s/ow u w/en i-model is loaded.

2 en and Save View de4nition usin0 6ile menu.


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3 ana0e view tables usin0 89ew:, 8#emove: and 8#ename: buttons


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3 Build View Table

3.1D-TreeView table de4nition de4nes table !olumns and /ow t/e rows are 0enerated.

It is reresented as a D-Tree de-normali;ation tree. T/is tree /as all

ne!essary !lasses and t/eir relations to roou may also insert a !lass by ri0/t !li! on a 9ode in D-Tree and

sele!t it.

2 Sele!t t/e relations/i +rom t/e #elations/i Drodown bo or use

8'arent !/ild relations/i: !/e!bo to indi!ate a se!ial relations/i

on an ed0e, w/i!/ is 'arent-C/ild !lass relations/i.


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7/en a View is 0enerated, t/e tool will tra!e t/ese relations/is +or

ea!/ instan!e o+ t/e arent node. Constraints may aly to t/e

relations/i, w/i!/ a?e!ts t/e row 0eneration@

T/e 8#eAuires related instan!e: !/e!bo a0s t/at instan!e +rom t/e

related !lass must eist to 0enerate a row in t/e view. t/erwise no

row is 0enerated.

T/e 8S/ared relations/i: !/e!bo indi!ates t/e !/ildren nodes s/are

t/e same relations/i wit/ t/e arent node but only one o+ t/e !/ildren

nodes may /ave instan!e +or ea!/ arent instan!e. 7/en 0eneratin0

t/e view, one row is 0enerated +or t/is set o+ related !lasses.

I+ a !lass /as bot/ 8S/ared relations/i: and 8Instan!e must eist:

!/e!ed, 8Instan!e must eist: is alied to t/e set !ontainin0 t/at

!lass an instan!e o+ one o+ t/e !lasses in t/e set must eist +or t/e

row to be reorted.

3 D-Tree node !an be moved around wit/in D-Tree window by dra00in0

and droin0% To remove a D-Tree node, use t/e remove button in D-Tree 7indow. T/e

w/ole bran!/ will be removed.

3.2Set up View olumnsView !olumns !ome +rom !lass D-Tree node roerties. T/ese !olumns may

!ome +rom multile !lasses in t/e tree. In many !ases, not all roerties o+

t/e !lasses in a D-Tree are needed in t/e view.

To in!lude a !lass roerty in a view,


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1 Sele!t t/e Class in t/e D-Tree 7indow, a list o+ roerties will s/ow u

below2 C/e! t/e roerties to in!lude in t/e view. I+ you would lie t/e

roerty name to s/ow di?erently, set it in t/e verride 9ame tetbo.

3.3!oll-up olumnsCon!etually similar roerties +rom sub-!lasses may mer0e into a sin0le

!olumn. In t/e above eamle, t/e value roerty in I+!uantityrea is !alled

reaValue w/ile t/e value roerty in I+!uantityen0t/ is !alled

en0t/Value. 7e !an use rollu to mer0e t/em into a sin0le !olumn !alled

8Value:. 7e do t/e roll-u by settin0 t/e #oll-u 'roerties bo 8Value@

en0t/Value, reaValue:.

T/e +ormat is des!ribed by t/e +ollowin0 0rammar@

EstartF -G EentryF H EentryF EstartF

EentryF -G Jtar0etK @ EroertiesF

EroertiesF -G JroertyK H JroertyK , EroertiesF


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7/ere EstartF is t/e start symbol, EentryF is symbol reresentin0 a !olumn-

value ma, EroertiesF is a symbol reresentin0 t/e values to be used +or a

!olumn, Jtar0etK is t/e strin0 se!i+yin0 t/e name o+ t/e !olumn to reort t/e

values in, and JroertyK is t/e strin0 t/at se!i4es t/e roerty t/at !an be

maed to t/is !olumn. 9ote t/at JroertyK must be t/e a!tual name o+ t/e

roerty, not t/e roerty label. I+ more t/an one value is +ound +or t/e 0iven!olumn, only one o+ t/em is reorted.

3."Custom Columnsi-model View Builder allows addin0 !al!ulated !olumns into a view. T/is is

done on t/e Custom Columns tab. Custom !olumnLs value deends on t/e

values o+ ot/er !olumns.

To add a !ustom,

1 Cli! 89ew: button on t/e Custom Columns tab. dialo0ue s/ows u

+or t/e !olumn name.2 Sele!t t/e !olumn +rom t/e list and edit t/e eression. 6or t/e

eressionLs +ormat and suorted oerations, see

/[email protected]!rosot.!omMen-

usMlibraryMsystem.data.data!olumn.eression.as .

http://msdn.microsot.com/en-us/library/system.data.datacolumn.expression.aspxhttp://msdn.microsot.com/en-us/library/system.data.datacolumn.expression.aspxhttp://msdn.microsot.com/en-us/library/system.data.datacolumn.expression.aspxhttp://msdn.microsot.com/en-us/library/system.data.datacolumn.expression.aspx


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8Cal!ulate +ter 'ivot: a?e!ts w/et/er t/e eression is !al!ulated be+ore

alyin0 a ivot or univot oeration or a+ter.

C/e!in0 t/e In!lude Time Stam Column will in!lude a se!ial !olumn wit/

t/e name 0iven in t/e tet bo. T/e value o+ t/is !olumn is set automati!ally

to be t/e time at w/i!/ t/e Auery was run. T/e time stam !olumn is0enerated be+ore ivot.

3.#$ivot olumns'ivot oeration transoses roerties lie nameMvalue airs automati!ally into

!olumns. tyi!al use o+ 'ivot !olumns is t/e dynami! roerties de4ned in

I6C model.

6our attributes are needed to mae u a 'ivot de4nition@

• #ow ID, w/i!/ de4nes ID used +or a row. 6or eamle, 9ame in I+!Sa!e

in t/e above samle.• 'ivot Column 9ame, w/i!/ de4nes w/ere we !an 4nd t/e names o+

dynami! roerties. 6or eamle, 9ame in I+!'/ysi!alSimleuantity in

t/e above samle.• 'ivot Column Value, w/i!/ de4nes w/ere we !an 4nd t/e values o+

dynami! roerties. 6or eamle, reaValue i+ I+!uantityrea or

en0t/Value in I+!uantityen0t/.• 'ivot Value eration, w/i!/ de4nes /ow we deal wit/ t/e values o+ a

dynami! roerty. T/e oerations !an be@ Sum, vera0e, Count, in,

a, et!.

T/ese attributes are set t/rou0/ t/e +ollowin0 )I.


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i-model View Builder automati!ally list all t/e otential /eaders 4nd in t/e

!urrent i-model and you may use a di?erent !olumn name +or it. >ou !an do

t/is by settin0 t/e verride 9ame bo.

3.%&n-pivot Columns)n-ivot oeration transoses roerties +rom !olumns to rows as

nameMvalue airs. T/e oeration is de4ned on 8)nivot: Tab.


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1 C/e! to sele!t !olumns to un-ivot.2 Se!i+y t/e !olumn name o+ label o+ t/e label-value air to !reate in

abel Column 9ame.3 Se!i+y t/e !olumn name o+ value o+ t/e label-value air to !reate in

Value Column 9ame.% Customi;e t/e value o+ name usin0 verride 9ame.

T/e 8=nable )nivot: !/e!bo needs to be !/e!ed +or t/e univot

oeration to be run. I+ t/e 8Do not eand i+ null: !/e!bo is !/e!ed,

/eaders t/at !ontain null are not univoted t/ey are simly not reorted.

)n-ivot is always alied a+ter t/e ivot i+ bot/ otions are enabled.


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" $review !esult'review tab s/ows t/e data o+ !urrent sele!ted table in t/e view +rom t/e

loaded i-model.


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# Deploy i-model view 'or (DBC )essBentley i-model View !ould be eosed t/rou0/ i-model DBC driver simly

by droin0 t/e View de4nition 4le under Bentley DBC ali!ation data

+older. n 7indows $ t/e +older is usually@C@N'ro0ramDataNBentleyND0nDBCDriver7in"%NueryNview +or "% bit DBC

driver.

T/e +ollowin0 eamle s/ows t/at CBie View is available alon0 wit/ I6C

!lasses and i-model 0eometry !lasses w/en an I6C i-model is oened t/rou0/

DBC in =!el.

denormalization transformation software manual.docx

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