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Unit 14. Mapplets

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Unit Objectives

Understand why and how to use: Mapplets

Use a mapplet in a mapping

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Mapplets

A mappletencapsulates asubset of amapping

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Mapplet Designer

Mapplet

Input & Output

transformations

(pass ata from

or to mapping!

Mapplet Designer "ool

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$%ample Data 'ources Define Outsie Mapplet

Source data defined

outside the Mapplet

Mapplet

Mapplet Input

transformation

Mapping

Mapplet Output

transformation

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$%ample Data 'ources Define Insie Mapplet

Sources

define source

data within

Mapplet

Note: Mapplet must come first in mapping

Mapplet Output

transformation

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Mapplet

Mapping

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*asses ata from a mapping into a mapplet

Mapplet Input "ransformation

Passie

Ports Output ports only

Usage

Only those ports

connected from an

Input transformationto another

transformation

will display in the

resulting Mapplet

+onnecting t,e same

port to more t,an one

transformation is

isallo-e

*ass to an $%pression

transformation first

!ransformation

!ransformation

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Mapplet Output "ransformation

Passie

Ports

Input ports only

Usage

Only those ports connected toan Output transformation "from

another transformation# willdisplay in the resulting Mapplet

One "or more# Mapplet Outputtransformations are re$uired ineery Mapplet

*asses ata from a mapplet into a mapping

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Mapplet -it, Multiple Output 0roups

+an output to multiple instances of t,e same target table

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Unmappe Mapplet Output 0roups

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*assive an ctive Mapplets

Multiple passive

mapplets can populate

t,e same target

instance

Multiple active mapplets

or active an passive

mapplets cannotpopulate t,e same

target instance

contains only passie

transformations

contains one or moreactie transformations

Passie Mapplet

Actie Mapplet

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Mapplet *arameters an ariables

Similar to mapping parameters and ariables

%efined under

Mapplets *arameters an ariables

A parameter or ariable defined in a mapplet is not

isible in any parent mapping

A parameter or ariable defined in a mapping is not

isible in any child mapplet

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Unit 14 5ab+reate a Mapplet

+reate a Mapplet from",e 6+"7'5$' loa mapping

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5ab 8evie-

&hat did we accomplish with this lab'

(uestions'

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Unit 14 9ui:

)* &hen would you use mapplets'

+* &hat is a mapplet output transformation'

,* &hat is a mapplet input transformation'

-* &here can a mapplet receie data from'

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