Major Flowable version upgrades that change the Java, Spring and Jakarta baseline or remove components.
Upgrading a Flowable 6 application to version 7: Java 17, Spring Boot 3 and the javax to Jakarta namespace change, replacing removed UI apps, form and content engines and Mule integration, async history removal, and database schema upgrades.
Moving Flowable 7.x to 8.0: Spring Framework 7 and Spring Boot 4 with no Spring Boot 3 compatibility, Jackson 3 and the Jackson 2 compatibility layer, test suites still on JUnit 3 or 4, and sequencing the application and engine upgrades.
Getting process scripts, expressions and JSON variables working with Jackson 3 in Flowable 8: the package rename, changed JsonNode methods, the jackson2 compatibility mode as a first step, and a test plan for models that touch JSON.
Rewriting Flowable process test suites before the Flowable 8 upgrade: the JUnit 3 and 4 support removal, FlowableTest and FlowableExtension, @Deployment resources, and keeping tests green during the move.
What changes moving from Flowable 7.1 to 7.2: REST date responses in UTC, Spring Boot 3.5, deprecations of JUnit 4 and Joda Time ahead of version 8, new query and variable options, and regression checks for clients of the REST API.
Planning for life after the Flowable 6 UI applications, which version 7 removed: modeling options, building task lists and admin views on the REST API, moving form definitions, and what a Flowable 7 or 8 front end needs.
Upgrading the Flowable database schema safely: automatic upgrade at engine start versus DBA-run upgrade scripts, backups, version mismatch errors, and sequencing schema changes with rolling application deployments.
Deciding whether to keep a Flowable 6 application on Java 8 or move to Flowable 7 or 8: what the project says about version 6 maintenance, the Java and Jakarta jumps, removed components, and how to stage the move.
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