MuleSoft Ambassador Patryk's Blog
Mule 4.x
I like the idea of clean easily read XML configuration in my Mule projects. Therefore I externalize DataWeave transformations , SQL quires and other content. In this article I will compare assets that Mule gives as to achieve externalization of such things in Mule 3 and Mule 4.
In the previous article, I have described how to create a custom Mule Domain Project. This time we will try to consume that. In other words, we will attach the Mule application to our previously defined domain. Link Just to recap. Let us see how our domain looks like. We have a mydomain project with…
In the previous article, I have described how to share common functionality encapsulated in the flows and subflows. This time I will focus on the common configurations that should be shared among our applications, especially in the context of on-prem deployment. Mule has a domain project application that can solve that. You will see how…
Reusability is essential to deliver functionality quicker and more consistently. I wrote about reusing DataWeave code in Modules, and also reusing RAML using API Fragments. Today I focus on sharing common logic encapsulated within the (private) flow or subflow. I will create a standard MuleSoft application and amend it to make it truly Common Module….
It is always desirable to reuse as much code as possible. We can do the same regarding DataWeave transformations and custom functions. In this article, I will describe how to reuse code in the newest DataWeave using modules. For those working with DataWeave 1.0, I will describe how to reuse code with readUrl function. DataWeave…
During transformation to JSON, we often do not want null properties. It is easy to remove them, by just using the skipNullOn attribute. However, for empty objects, it is not that trivial, especially when you have to deal with many such cases within one transformation. In this article, I will show you how you can…
Content Enricher is definitely a useful integration pattern. It allows easily enrich message content with new data gathered from external resources. In the vast majority of Mule’s apps, I have been using the Message Enricher Component. Today I will point main differences in Mule 3.x and Mule 4.x regarding this element. Content Enricher pattern When…
In the last article, I have described a nuisance with casting to an integer value. This time we will look at huge numbers and their formatting. In addition, I will mention scientific notation. All these topics are around the number format used by the DataWeave engine. So let’s see what the problem looks like. Problem…
Errors occur all the time. All you can do is implement error handling. In this article, I will describe how to use the introduced abstraction layer in the exceptions area. Before Mule 4, developers only could access raw Java exceptions as Mule is a Java-based ESB. This led to a situation where you, as a…
There are times when you need to get one particular element from an array, but not based on the index. This item needs to fulfill some requirements like equality and so on. In order to perform that task filter selector ‘?‘ was introduced. This is applicable for both DataWeave 1 and 2. Filter selector syntax…
