repository·main·Indexed 27 days ago
https://github.com/apache/incubator-kie-droolsAn open source rule engine, DMN engine, and complex event processing (CEP) engine for Java and the JVM platform. Drools provides forward-chaining and backward-chaining inference for evaluating business rules and building expert systems. Key features include impact analysis and graph visualization, MVEL compilation, metric logging for performance analysis, session reliability for stateful KieSessions, and integration with Quarkus and Kafka.
Efesto core is the module containing the primary business functionalities of Efesto. It is responsible for two main stages of the Efesto lifecycle:
The kogito-quarkus-extension-spi is a Service Provider Interface (SPI) module designed to act as a bridge between BuildItem producers and consumers within the Kogito Quarkus ecosystem.
In this architecture:
jbpm-quarkus.kogito-quarkus-addon-knative-eventing.Note: This module is intended for internal use by extension developers to facilitate communication between different Kogito components during the Quarkus build process.
The MVEL Compiler translates MVEL source code into Java. It is primarily used when Drools consequences specify dialect "MVEL". It also serves to preprocess Java consequences that utilize modify and with blocks by transforming them into Java-compatible structures.
Important Requirement: The compiler uses a type inference algorithm based on reflection. Therefore, the .class files for the objects being manipulated must be present in the classloader before running the compiler, otherwise the type inference will fail.
The Efesto Runtime Manager is responsible for the actual execution of models. Its primary functions include class-loading and method invocation, as well as handling execution exceptions.
When integrating with this system, note the following architectural boundaries:
runtime-manager-api: This is the only module intended to be visible outside the system's core. Use this for external interactions.runtime-manager-common: This module is considered private and should be hidden from external consumers.kogito-pmml-openapi library provides an OpenAPI mapper (PMMLOASResult) designed for JSON schema generation or endpoint definition. It functions by mapping a PMMLModel to a PMMLOASResult. For every individual model contained within a PMML file, a specific PMMLOASResult is generated.kie-dmn-xsd-resources module provides a single JAR containing all Decision Model Notation (DMN) related XML Schema Definitions (XSDs). These schemas are fetched directly from the official OMG (Object Management Group) repository to ensure compliance with DMN specifications.The Kogito Gradle Plugin manages code generation assets during the compile time of a Kogito application. It supports Apache KIE plain Java projects and Apache KIE Spring Boot based projects.
The plugin automatically discovers and processes the following Apache KIE assets:
It generates and compiles the mandatory Java classes produced by the Kogito Codegen layer.