Bug 1032059
| Summary: | RETE-OO: Reversed live query results order compared to PHREAK | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Retired] JBoss BRMS Platform 6 | Reporter: | Marek Winkler <mwinkler> | ||||
| Component: | BRE | Assignee: | Edson Tirelli <etirelli> | ||||
| Status: | CLOSED NOTABUG | QA Contact: | Marek Winkler <mwinkler> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 6.0.0 | CC: | mproctor | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2013-11-19 14:53:39 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
|
||||||
There is no guarantee on the order the rows will be produced for a single rule. This is something that has and will change over time, as we optimise internal data structures. It's even changed between ReteOO versions. |
Created attachment 826055 [details] Maven project with reproducer Description of problem: Live queries return results in different order with PHREAK and with RETE. For instance, imagine you define a live query (KieSession.openLiveQuery()) which returns two rows, A and B. If you attach a ViewChangedEventListener to the query, the ViewChangedEventListener.rowInserted(Row) method gets called as follows: PHREAK: ViewChangedEventListener.rowInserted(A), ViewChangedEventListener.rowInserted(B) RETEOO: ViewChangedEventListener.rowInserted(B), ViewChangedEventListener.rowInserted(A) I am not sure if this is by design or a bug, or just the order of query results is not guaranteed in general. Could someone from engineering comment this? Version-Release number of selected component (if applicable): Drools 6.0.0-SNAPSHOT BRMS 6.0.0 ER4 How reproducible: Run LiveQueriesTest from the attached Maven project with setting drools engine to RETE: mvn clean test -Dtest=LiveQueriesTest -Ddrools.ruleEngine=reteoo The query results order is reversed when executed with PHREAK: mvn clean test -Dtest=LiveQueriesTest -Ddrools.ruleEngine=phreak