mapping parameters & variables

8/16/2019 Mapping Parameters & Variables

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INFORMATICAMAPPING PARAMETRS & VARIABLES

&WORKFLOW VARIABLES

Prepared by, Jeeva R


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Purpose

• Mapping parameters and aria!"es represent a"#es in mappingsand mapp"ets$

• T% st%re in %rmati%n d#ring t'e e(e)#ti%n$• We #se mapping aria!"e t% per %rm an in)rementa" read % t'e

s%#r)e* T% assign se+#en)e a"#es* et)$*e$g$ ,,SE-.VAR

• We #se mapping parameters t% s#!stit#te a"#es t'at are de/ned$e$g$ ,,STG0B

• W%r12%3 Varia!"e is #sed t% pass t'e a"#e % mapping aria!"e %rparameter r%m %ne sessi%n t% t'e %t'er$


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Parameter vs. Variable

• T'e a"#e % a parameter is fxed d#ring t'e r#n % t'e mapping•

Variables can change in a"#e d#ring r#n5time$• T% )reate a parameter %r aria!"e* g% t% Mapping -> Parameters and Variables 3it'in t'e Mapping 0esigner in t'e0esigner )"ient$• T'e %rmat is $$VariableName or $$ParameterName.• Se"e)t data t6pe and Aggregati%n t6pe %r t'e mapping aria!"e$•

Se"e)t data t6pe %r mapping parameter$

Initial and e!ault Value"

• We )an de/ne initia" a"#e 3'i"e )reating e"se IS )%nsiders de a#"t a"#e$• T'e de a#"t a"#es !ased %n data t6pe % aria!"es*

0ata 570e a#"t Va"#eN#meri) 578String 57Empt6 String0ate time 579:9:9


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#tart Value• Va"#e at Start % sessi%n•

T'e IS "%%1s %r t'e start a"#e in t'e %""%3ing %rder;9$Va"#e in parameter /"e


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Variable ata type and %ggregation &ype"

• 0e)"ared d#ring mapping aria!"e )reati%n$• T'e IS #ses t'e aggregate t6pe % a Mapping aria!"e t% determine t'e

fnal current value % t'e mapping aria!"e$• Aggregati%n t6pes are;

'. ount" Integer and sma"" integer data t6pes are a"id %n"6$).*ax" A"" trans %rmati%n data t6pes e()ept !inar6 data t6pe are

a"id$+.*in" A"" trans %rmati%n data t6pes e()ept !inar6 data t6pe are

a"id$

Variable unctions"• determine '%3 t'e Integrati%n Ser i)e )a")#"ates the current value

o a mapping variable in a pipeline $• T'ree t6pes*

9$ #et*axVariable---ignores update,delete and re ect statement.


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0xamples"

• SETMA VARIABLE?,, ar.ma(*SAL@• SETMINVARIABLE?,, ar.min*SAL@• SETCO NTVARIABLE?,, ar.)%#nt@• SETVARIABLE?,, ar*SAL@


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Parameter ile"

• A parameter /"e is a "ist % parameters and ass%)iated a"#es %r a3%r12%3* 3%r1"et %r sessi%n$

• Parameter /"es pr% ide 2e(i!i"it6 t% )'ange t'ese aria!"es ea)' time3e r#n a 3%r12%3 %r sessi%n$

• Enter t'e parameter /"e name and dire)t%r6 in t'e 3%r12%3 %r sessi%npr%perties$

•

A parameter /"e )%ntains t'e %""%3ing t6pes % parameters andaria!"es;• 1or23o4 variable• 1or2let variable ; Re eren)es a"#es and re)%rds in %rmati%n in a

3%r1"et$ We )an #se prede/ned 3%r1"et aria!"es in a parent 3%r12%3*!#t 3e )ann%t #se 3%r12%3 aria!"es r%m t'e parent 3%r12%3 in a

3%r1"et$• #ession parameter ; 0e/nes a a"#e t'at )an )'ange r%m sessi%n t%

sessi%n* s#)' as a data!ase )%nne)ti%n %r /"e name$• *apping parameter and *apping variable


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In a Parameter fle"

• G"%!a"D• Ser i)e; ser i)e nameD• %"der name$WF;3%r12%3 nameD• %"der name$WF;3%r12%3 name$WT;3%r1"et nameD• %"der name$WF;3%r12%3 name$WT;3%r1"et name$WT;3%r1"et name$$$D• %"der name$WF;3%r12%3 name$ST;sessi%n nameD• %"der name$sessi%n nameD• sessi%n nameDNote ; In the parameter fle, older and session names are case sensitive .

e$g$ % aria!"es de/ned in Parameter /"e$• ,,B%n#s 9888• ,, ar.ma( 88• ,, ar.min 9


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1or23o4 Variables"

• We )an )reate and #se aria!"es in a 3%r12%3 t% re er a"#es andt% re)%rd in %rmati%n$

• T'e 3%r12%3 aria!"e a"#e )an )'ange d#ring 3%r12%3 r#n$• T6pes;• Predefned 4or23o4 variables - #sed t% e a"#ate 3%r12%3 and

tas1 )%nditi%ns$

Represented with ‘ ! signe.g. "#$onnection%&o'rce

• 5ser-defned 4or23o4 variables Represented with ‘ ! sign• %ssignment tas2s• ecision tas2s• 6in2s• &imer tas2s


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5ser efned 1or23o4 variables"

• T'e #ser de/ned 3%r12%3 aria!"es are #sed t% pass mappingparameter: aria!"e a"#e r%m %ne parti)#"ar sessi%n t% %t'er$

• T'e 3%r12%3 aria!"es are % di erent data t6pes*• 0ate:time• nString• Integer• 0%#!"e• T'e 3%r12%3 aria!"e and mapping param: ar s'%#"d !e % same data t6pe$• T'e 3%r12%3 aria!"e )an !e de)"ared persistent %r n%n5persistent and

IsN LL as de a#"t a"#e %r a spe)i/) de/ned a"#e 3'i"e )reating it$• Va"#es 3i"" !e st%red in rep%sit%r6 %r persistent aria!"es t'at )an !e #sed

%r ne(t r#n$• Can !e ie3ed !6 Rig't )"i)1 %n 3 name and ie3 persistent a"#es$

?C%ntH@


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•

T'e #ser de/ned 3%r12%3 aria!"es )an !e assigned 3it'mapping parameter: aria!"e a"#e in edit tas2s #ndercomponents ta! in Post-session on success variableassignment.

• T'e6 )an a"s% !e #sed t% assign mapping parameter: aria!"ea"#e %r a sessi%n in edit tas2s #nder components ta! in Pre-

session variable assignment.


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#ystem Parameters"

• ,,, re ers S6stem Parameters "i1e ,,,SessStartTime• ,,,SessStartTime ret#rns t'e initia" s6stem date a"#e %n t'e

ma)'ine '%sting t'e P%3erCenter Ser er 3'en t'eser er initia"i es a sessi%n

• ,,,SessStartTime ret#rns t'e sessi%n start time as a string a"#e$


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T'an1 J%#

mapping parameters & variables

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