Mapplet in Informatica holds utmost importance. But, are you familiar with the benefits and features that a mapplet has? If not, find out all the details in this article. It teaches you how to use a mapplet, how to create a mapplet, how to edit and debug a mapplet, how to test and open a mapplet along with so much more.
An Informatica Mapplet is a reusable object that comprises a set of transformations that can be used in multiple maps. You can use a Mapple in a mapping or can validate it as a rule.
As far as transformations in a Mapplet are concerned, they can be either reusable or non-reusable.
And then, when using a mapplet in mapping, you can use the mapple’s instance.
Any change or alteration made to the mapplet will be inherited by all of the mapplet’s instances. In this post, let’s find out more about Mapplet in Informatica.
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The Informatica Mapplet is one of the extremely useful features of Informatica PowerCenter. In any other programming language, reuse is important to build efficient and fast software. Mapplets offer these benefits in the environment of Informatica PowerCenter.
Mapplets are reusable objects that have logic and transformations quite similar to traditional mapping. However, the only difference here is the reuse. When you want mapping logic to be reusable across other mappings, you must put this logic within a mapplet.
There are two primary reasons to use mapplet in Informatica, such as:
To create a mapplet in Informatica, follow these below-mentioned steps:
You can use a Mapplet Designer to edit the mapplet. The designer helps validate the changes whenever you save a mapplet. Upon doing so, all of the instances and shortcuts inherit the changes. If you wish to see the shortcuts or mappings that might be affecting the changes you make in a mapplet, you can:
Here are some changes you can make to a mapplet without impacting its validity or session:
Informatica designer offers a feature that can be used to debug a mapplet in Informatica. This helps you debug and evaluate any of the existing mapplets. However, the only requirement here is that it should be a valid mapplet. Here are some steps to help you out:
Now, the debugging will begin.
There is not any separate way to test a mapplet in Informatica. You will have to do this in the mapping only.
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Mapplets and mapplet ports are showcased differently in the Mapping Designer and the Mapplet Designer. When you use a mapplet in a mapping, the mapplet object showcases only the ports from the transformations of Output and Input. These are known as the mapple output and mapplet input ports.
The mapplet showcases the input ports from the input transformation and output ports from the output transformations. A mapplet can be expanded in a mapping designer by choosing it and clicking Mappings and then choosing Expand.
This helps the mapplet to expand for viewing. Transformation icons in the expanded mapplet are showcased as shaded.
You can either iconize or open all of the transformations in the mapping and mapplet. Keep in mind that when the mapplet is expanded, you would not be able to edit any property, navigate to other folders or save the repository.
Here are some of the useful features of mapplets:
Mapplets and Mapping both come with one similarity, which is there working on data. However, while mapping deals with the data wherein a modification has to be made; maplets deal with several mappings. Apart from this, here is a table displaying the difference between these two:
|These are a collection of a set of rules or transactions applied to data.||These are a collection of source data objects that are linked through a set of targets, transactions on which the data has to move.|
|The transformations in mapplets can be reused.||The transformations in mapping cannot be reused.|
|You can create a series of transformation logics||These use data sources as well as a transformation logic to transform the data to the target.|
|Mapplets can be applied to big data or bulk data.||Mappings can be applied to small data.|
|The basic components of mapplets include input and output.||The basic components of mapping include source tables, transformations, parameters and variables, and target objects.|
Here are some of the limitations of mapplets:
Here are a few ways to avoid mistakes when creating or dealing with mapplets:
Now that you have understood everything about Informatica Mapplet, it’s time to integrate this information into your projects. By referring to the information mentioned above, creating, viewing and debugging Informatica Mapplet will definitely be an easy task.
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Ravindra Savaram is a Content Lead at Mindmajix.com. His passion lies in writing articles on the most popular IT platforms including Machine learning, DevOps, Data Science, Artificial Intelligence, RPA, Deep Learning, and so on. You can stay up to date on all these technologies by following him on LinkedIn and Twitter.