[JBoss JIRA] Created: (JBAS-3720) Change structure of ClusteredSSO data in tree cache to avoid lock issues
by Brian Stansberry (JIRA)
Change structure of ClusteredSSO data in tree cache to avoid lock issues
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Key: JBAS-3720
URL: http://jira.jboss.com/jira/browse/JBAS-3720
Project: JBoss Application Server
Issue Type: Task
Security Level: Public (Everyone can see)
Components: Clustering, Web (Tomcat) service
Reporter: Brian Stansberry
Assigned To: Brian Stansberry
Fix For: JBossAS-5.0.0.CR1
For each SSO entry, their should be child node per server where the SSO has been used. This is different from the current where all the session data for an SSO is in one node. The data map in each child node would hold the session ids of the sessions active on that server.
This kind of structure avoids most lock contention between different servers.
Can't do this in 4.0.x as it prevents interoperation with earlier releases.
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18 years, 8 months
[JBoss JIRA] Created: (JBPM-743) Optionally allow swimlanes to perform assignment for each evaluation
by Brian Greene (JIRA)
Optionally allow swimlanes to perform assignment for each evaluation
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Key: JBPM-743
URL: http://jira.jboss.com/jira/browse/JBPM-743
Project: JBoss jBPM
Issue Type: Feature Request
Components: Core Engine
Environment: All
Reporter: Brian Greene
Assigned To: Tom Baeyens
Swimlanes are a very effective way to perform assignment, and we have implemented several that are nicely reusable.
A swimlane though, isn't always (to my mind) the same actor or actors throughout the life of a process instance. In our case (and we've several use cases where this is applicable) a swimlane may represent an actor(s) that are related to a particular object or object in the process.
The problem arises when the user(s) that are related to said object change in a long-running process.
For example, a long running requisition process. The manager of the user who made the requisition may wish to have notifications as the process goes along (we have integrated email functionality in a custom extension). The most intuitive way to handle this as a process author is to use a swimlane that defines the relationship. The current jBPM TaskMgtInstance will only perform the assignment once per swimlane though, assuming that the SAME actor(s) will be used for the life of the process. Depending on what you're orchestrating, this may not be tenable.
I think at the least there ought to be a way to allow a swimlane to configure a swimlane to perform its work every time it is referenced rather than using the previously determined actor(s).
I've made a modification to jBPM to force swimlane instances to ALWAYS perform assignment, and while this fixes the issue in the short term, eventually I plan to modify either the global config for swimlanes, and better, add an attribute to the swimlane declaration that allows configurable behavior on a swimlane that will override the global default. In this way you could have the current behavior or configure the global setting to behave as I've discussed and provide an override to the current behavior on a case by case basis.
You can get this behavior using nested assignment delegations, but there are reusability issues as well as the general cleanliness of the jPDL language to consider. We think swimlanes are in many cases more intuitive, and make the process definition much more readable.
As we've discussed in internally, this seems reasonable, and seems to be required in a flexible environment supporting long running processes.
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18 years, 8 months
[JBoss JIRA] Created: (JBAS-4096) Cleanup the JBoss JTS implementation
by Dimitris Andreadis (JIRA)
Cleanup the JBoss JTS implementation
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Key: JBAS-4096
URL: http://jira.jboss.com/jira/browse/JBAS-4096
Project: JBoss Application Server
Issue Type: Task
Security Level: Public (Everyone can see)
Components: IIOP service
Reporter: Dimitris Andreadis
Assigned To: Francisco Reverbel
Fix For: JBossAS-4.2.1.CR1
Under the J2EE spec, JTS support is optional. It is preferable not to support it by default, rather than maintaining a JTS implementation inside the app server code base in addition to JBossTS JTS as we go forward. App server users requiring transactions over RMI/IIOP will need to download and drop in the JBoss JTS. Some cleanup of the app server code will be beneficial to ensure elegant failure rather than the current exceptions. We may be able to achieve this though the jboss iiop-service.xml settings?
See also JBAS-4024
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18 years, 8 months