Last 6 months

Delivering domain logic with Custom Tasks

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Custom Tasks, a.k.a. custom Work Items are used when the natively provided components are not clear enough to demonstrate the required domain demands. See examples of domain-specific tasks that a business user would find useful to have available in the process designer: Enhance customer data; Validate Personal ID against Official State Service; Check customer healthRead more →

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Consuming business assets via REST

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As expected as default over any REST communication, when the integration via client and Kie Server is done via REST, there is no guarantee on the delivery or retry of this message. The initialization of Kie Services Client requires an instance of org.kie.server.client.KieServicesConfiguration. When using the REST approach, we should create the instance of KieServicesConfigurationRead more →

Getting Started with the Kie Server Java API

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Kie Server Java client API is used when it’s necessary to create a Java service to interact with a remote Kie Server (not an embedded engine). Consider that you have an architecture with a Kie Server running your business projects and you want to consume them using a Java service running in another application serverRead more →

Mastering Transaction Boundaries

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When planning usage of processes that are complex, long-running, and with possible points of failures like custom work item handlers, asynchronous tasks, timers, signals, and service tasks, it is crucial to understand how jBPM deals with transactions. This knowledge might save some troubleshooting hours if you have persistent processes. “Why?“, you might ask: if theRead more →

Runtime Strategy: Choose wisely

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Kie Server can be configured to deal differently with the requests it receives and the objects it stores in memory or in the database. Properly configuring how the engine deals with the objects in memory, ensures a project with fewer resource consumption and avoids unexpected behaviors. Runtime Strategy configuration affects directly how the engine dealsRead more →

5. Techniques to boost a BA Project

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Previous posts of the jBPM Getting Started Series should provide a good base for the understanding of this chapter. Also, basic knowledge about application transactions should provide a better understanding of the chapter. The engine can be tuned for business automation projects to achieve better performance results are achieved. Mainly when involving business rules validation,Read more →

Dealing with Unexpected Errors in Processes

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During the development phase, it is expected that developers deal and treat unexpected behaviors, predictable and unpredicted errors that might happen during the execution of code. Consider the following situation: An online traveling company named MaTrip.com sells a whole trip experience with a discount for a single package buying: flight + hotel. But each ofRead more →

Asynchronous Execution

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By default, the flow of tasks is executed in a synchronous way: all tasks will be treated one after the other, by a single thread. This being said, if a process contains, example, four service calls – where each call lasts around 30 seconds – this process execution will run – and allocate JVM, CPU,Read more →