[JBoss JIRA] (WFLY-11165) Eliminate unessential module dependencies on the org.jboss.as.transactions module
by Brian Stansberry (Jira)
[ https://issues.jboss.org/browse/WFLY-11165?page=com.atlassian.jira.plugin... ]
Brian Stansberry commented on WFLY-11165:
-----------------------------------------
Sounds good [~ochaloup]. +1 re: compensations.
> Eliminate unessential module dependencies on the org.jboss.as.transactions module
> ---------------------------------------------------------------------------------
>
> Key: WFLY-11165
> URL: https://issues.jboss.org/browse/WFLY-11165
> Project: WildFly
> Issue Type: Enhancement
> Components: Class Loading, Management, Transactions
> Reporter: Brian Stansberry
> Assignee: Brian Stansberry
> Priority: Major
> Fix For: 15.0.0.Beta1
>
>
> As part of our work on getting maximum benefit from Galleon, we want to eliminate unnecessary hard dependencies between Galleon packages, most of which are just provisioning wrappers around the FS content for our JBoss Modules modules. So that means cutting dependency links between modules.
> The org.jboss.as.transactions module necessarily has a large dependency tree, so if other modules depend on it, they then also have a large dependency tree, perhaps much larger than whatever they really need. So I want to eliminate such dependencies whereever possible.
> There are quite a few modules that depend on org.jboss.as.transactions solely for ServiceName constants for services that provide value types not from org.jboss.as.transactions, e.g. TransactionManager which is from the javax.transaction.api module. So the main (perhaps only) task here will be to eliminate those links.
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[JBoss JIRA] (DROOLS-3098) UX: Add support for map and list
by Ron Murhammer (Jira)
[ https://issues.jboss.org/browse/DROOLS-3098?page=com.atlassian.jira.plugi... ]
Ron Murhammer commented on DROOLS-3098:
---------------------------------------
[~uxdlc] So if you look at the "Test Cases" when you run the tests with the input data against the rules (decision tables) they would populate those fields and the EXPECT would check their values.
> UX: Add support for map and list
> --------------------------------
>
> Key: DROOLS-3098
> URL: https://issues.jboss.org/browse/DROOLS-3098
> Project: Drools
> Issue Type: Story
> Components: Scenario Simulation and Testing
> Reporter: Daniele Zonca
> Assignee: Liz Clayton
> Priority: Major
> Labels: ScenarioSimulation, UX, UXTeam
>
> As user I want to be able to use Data Objects that contain Lists and Maps
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[JBoss JIRA] (WFLY-11233) allow EntityManager caching in the JPA container
by Scott Marlow (Jira)
[ https://issues.jboss.org/browse/WFLY-11233?page=com.atlassian.jira.plugin... ]
Scott Marlow commented on WFLY-11233:
-------------------------------------
I think that I found the race condition causing the following failures:
* [https://gist.github.com/scottmarlow/2a624b6676cab391b3ed7986c455c52d]
* [https://gist.github.com/scottmarlow/9edbe9131fee2a41b3267c78e06f2d0e]
* [https://gist.github.com/scottmarlow/788a654b9dc53d078093ce64df9d4f26]
The JPA container Synchronization.afterCompletion() is called before the Hibernate ORM Synchronization.afterCompletion(), instead we should order the JPA container afterCompletion to run after Hibernate ORM has run, so that the EntityManager is not cached for use, until Hibernate has completed its afterCompletion cleanup work.
> allow EntityManager caching in the JPA container
> ------------------------------------------------
>
> Key: WFLY-11233
> URL: https://issues.jboss.org/browse/WFLY-11233
> Project: WildFly
> Issue Type: Feature Request
> Components: JPA / Hibernate
> Reporter: Scott Marlow
> Assignee: Scott Marlow
> Priority: Major
> Fix For: 15.0.0.Beta1
>
>
> It could be interesting to see if caching EntityManager instances (per EntityManagerFactory) could improve performance for applications, that could benefit from that.
> The JPA 2.2 specification mentions the below, pay particular attention to the text "whether entity manager instances are sometimes reused" in section 7.8.2, also look at mention of [88]:
> {quote}
> 7.8 Requirements on the Container
> 7.8.1 Application-managed Persistence Contexts
> When application-managed persistence contexts are used, the container must instantiate the entity manager factory and expose it to the application via JNDI. The container might use internal APIs to create the entity manager factory, or it might use the PersistenceProvider.createContainerEntityManagerFactory method. However, the container is required to support third-party persistence providers, and in this case the container must use the PersistenceProvider.createContainerEntityManagerFactory method to create the entity manager factory and the EntityManagerFactory.close method to destroy the entity manager factory prior to shutdown (if it has not been previously closed by the application).
> 7.8.2 Container Managed Persistence Contexts
> The container is responsible for managing the lifecycle of container-managed persistence contexts, for injecting EntityManager references into web components and session bean and message-driven bean components, and for making EntityManager references available to direct lookups in JNDI. When operating with a third-party persistence provider, the container uses the contracts defined in section 7.9 to create and destroy container-managed persistence contexts. It is undefined whether a new entity manager instance is created for every persistence context, or whether entity manager instances are sometimes reused. Exactly how the container maintains the association between persistence context and JTA transaction is not defined. If a persistence context is already associated with a JTA transaction, the container uses that persistence context for subsequent invocations within the scope of that transaction, according to the semantics for persistence context propagation defined in section 7.6.4.
> 7.9 Runtime Contracts between the Container and Persistence Provider
> This section describes contracts between the container and the persistence provider for the pluggability of third-party persistence providers. Containers are required to support these pluggability contracts. [87]
> 7.9.1 Container Responsibilities
> For the management of a transaction-scoped persistence context, if there is no EntityManager already associated with the JTA transaction:
> * The container creates a new entity manager by calling EntityManagerFactory.createEntityManager when the first invocation of an entity manager with PersistenceContextType.TRANSACTION occurs within the scope of a business method executing in the JTA transaction.
> * After the JTA transaction has completed (either by transaction commit or rollback), the container closes the entity manager by calling EntityManager.close. [88] Note that the JTA transaction may rollback in a background thread (e.g., as a result of transaction timeout), in which case the container should arrange for the entity manager to be closed but the EntityManager.close method should not be concurrently invoked while the application is in an EntityManager invocation.
> The container must throw the TransactionRequiredException if a transaction-scoped persistence context is used and the EntityManager persist, remove, merge, or refresh method is invoked when no transaction is active.
> For stateful session beans with extended persistence contexts:
> * The container creates an entity manager by calling EntityManagerFactory.createEntityManager when a stateful session bean is created that declares a dependency on an entity manager with PersistenceContextType.EXTENDED. (See section 7.6.3).
> * The container closes the entity manager by calling EntityManager.close after the stateful session bean and all other stateful session beans that have inherited the same persistence context as the entity manager have been removed.
> * When a business method of the stateful session bean is invoked, if the stateful session bean uses container managed transaction demarcation, and the entity manager is not already associated with the current JTA transaction, the container associates the entity manager with the current JTA transaction and, if the persistence context is of type SynchronizationType.SYNCHRONIZED, the container calls EntityManager.joinTransaction. If there is a different persistence context already associated with the JTA transaction, the container throws the EJBException.
> * When a business method of the stateful session bean is invoked, if the stateful session bean uses bean managed transaction demarcation and a UserTransaction is begun within the method, the container associates the persistence context with the JTA transaction and, if the persistence context is of type SynchronizationType.SYNCHRONIZED, the container calls EntityManager.joinTransaction.
> The container must throw the IllegalStateException if the application calls EntityManager.close on a container-managed entity manager.
> [87] It is not required that these contracts be used when a third-party persistence provider is not used: the container might use these same APIs or its might use its own internal APIs.
> [88] The container may choose to pool EntityManagers: it instead of creating and closing in each case, it may acquire one from its pool and call clear() on it.
> {quote}
> One challenge with introducing an entity manager (per EntityManagerFactory) cache, is knowing when to close EntityManagers after certain errors have occurred on the EntityManager. To deal with this robustness issue, we will discard entity managers that are marked close when retrieving them from the cache. To ensure that we always put the cached EM back in cache, EntityManagerCache use is only done within JTA transactions, since we have control of the release (closing) of the EntityManager and only with SynchronizationType.SYNCHRONIZED (never with SynchronizationType.UNSYNCHRONIZED) persistence contexts.
> For this jira, the EntityManagerCache keeps strong references to the (cleared) EntityManager's from the cache. If this causes users OOM errors, we could consider using SOFT references so that the EntityManager's could be GCd in low memory conditions. We also offer users a choice between an unbounded cache (size=0) and a bounded cache. Users that have problems with OOM errors, should switch to a bounded cache.
> Persistence unit hint "wildfly.jpa.emcache", may be:
> * true, per EntityManagerFactory/persistence unit) cache that is shared between multiple threads.
> * false (default), no caching is performed.
> Persistence unit hint "wildfly.jpa.emcache.size", may be:
> * 0 (default), the cache (if enabled) is unbounded.
> * N, where N is the max number of EntityManager instances that can be placed in the EntityManagerCache, in between application use.
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[JBoss JIRA] (WFLY-11233) allow EntityManager caching in the JPA container
by Scott Marlow (Jira)
[ https://issues.jboss.org/browse/WFLY-11233?page=com.atlassian.jira.plugin... ]
Scott Marlow updated WFLY-11233:
--------------------------------
Fix Version/s: 15.0.0.Beta1
> allow EntityManager caching in the JPA container
> ------------------------------------------------
>
> Key: WFLY-11233
> URL: https://issues.jboss.org/browse/WFLY-11233
> Project: WildFly
> Issue Type: Feature Request
> Components: JPA / Hibernate
> Reporter: Scott Marlow
> Assignee: Scott Marlow
> Priority: Major
> Fix For: 15.0.0.Beta1
>
>
> It could be interesting to see if caching EntityManager instances (per EntityManagerFactory) could improve performance for applications, that could benefit from that.
> The JPA 2.2 specification mentions the below, pay particular attention to the text "whether entity manager instances are sometimes reused" in section 7.8.2, also look at mention of [88]:
> {quote}
> 7.8 Requirements on the Container
> 7.8.1 Application-managed Persistence Contexts
> When application-managed persistence contexts are used, the container must instantiate the entity manager factory and expose it to the application via JNDI. The container might use internal APIs to create the entity manager factory, or it might use the PersistenceProvider.createContainerEntityManagerFactory method. However, the container is required to support third-party persistence providers, and in this case the container must use the PersistenceProvider.createContainerEntityManagerFactory method to create the entity manager factory and the EntityManagerFactory.close method to destroy the entity manager factory prior to shutdown (if it has not been previously closed by the application).
> 7.8.2 Container Managed Persistence Contexts
> The container is responsible for managing the lifecycle of container-managed persistence contexts, for injecting EntityManager references into web components and session bean and message-driven bean components, and for making EntityManager references available to direct lookups in JNDI. When operating with a third-party persistence provider, the container uses the contracts defined in section 7.9 to create and destroy container-managed persistence contexts. It is undefined whether a new entity manager instance is created for every persistence context, or whether entity manager instances are sometimes reused. Exactly how the container maintains the association between persistence context and JTA transaction is not defined. If a persistence context is already associated with a JTA transaction, the container uses that persistence context for subsequent invocations within the scope of that transaction, according to the semantics for persistence context propagation defined in section 7.6.4.
> 7.9 Runtime Contracts between the Container and Persistence Provider
> This section describes contracts between the container and the persistence provider for the pluggability of third-party persistence providers. Containers are required to support these pluggability contracts. [87]
> 7.9.1 Container Responsibilities
> For the management of a transaction-scoped persistence context, if there is no EntityManager already associated with the JTA transaction:
> * The container creates a new entity manager by calling EntityManagerFactory.createEntityManager when the first invocation of an entity manager with PersistenceContextType.TRANSACTION occurs within the scope of a business method executing in the JTA transaction.
> * After the JTA transaction has completed (either by transaction commit or rollback), the container closes the entity manager by calling EntityManager.close. [88] Note that the JTA transaction may rollback in a background thread (e.g., as a result of transaction timeout), in which case the container should arrange for the entity manager to be closed but the EntityManager.close method should not be concurrently invoked while the application is in an EntityManager invocation.
> The container must throw the TransactionRequiredException if a transaction-scoped persistence context is used and the EntityManager persist, remove, merge, or refresh method is invoked when no transaction is active.
> For stateful session beans with extended persistence contexts:
> * The container creates an entity manager by calling EntityManagerFactory.createEntityManager when a stateful session bean is created that declares a dependency on an entity manager with PersistenceContextType.EXTENDED. (See section 7.6.3).
> * The container closes the entity manager by calling EntityManager.close after the stateful session bean and all other stateful session beans that have inherited the same persistence context as the entity manager have been removed.
> * When a business method of the stateful session bean is invoked, if the stateful session bean uses container managed transaction demarcation, and the entity manager is not already associated with the current JTA transaction, the container associates the entity manager with the current JTA transaction and, if the persistence context is of type SynchronizationType.SYNCHRONIZED, the container calls EntityManager.joinTransaction. If there is a different persistence context already associated with the JTA transaction, the container throws the EJBException.
> * When a business method of the stateful session bean is invoked, if the stateful session bean uses bean managed transaction demarcation and a UserTransaction is begun within the method, the container associates the persistence context with the JTA transaction and, if the persistence context is of type SynchronizationType.SYNCHRONIZED, the container calls EntityManager.joinTransaction.
> The container must throw the IllegalStateException if the application calls EntityManager.close on a container-managed entity manager.
> [87] It is not required that these contracts be used when a third-party persistence provider is not used: the container might use these same APIs or its might use its own internal APIs.
> [88] The container may choose to pool EntityManagers: it instead of creating and closing in each case, it may acquire one from its pool and call clear() on it.
> {quote}
> One challenge with introducing an entity manager (per EntityManagerFactory) cache, is knowing when to close EntityManagers after certain errors have occurred on the EntityManager. To deal with this robustness issue, we will discard entity managers that are marked close when retrieving them from the cache. To ensure that we always put the cached EM back in cache, EntityManagerCache use is only done within JTA transactions, since we have control of the release (closing) of the EntityManager and only with SynchronizationType.SYNCHRONIZED (never with SynchronizationType.UNSYNCHRONIZED) persistence contexts.
> For this jira, the EntityManagerCache keeps strong references to the (cleared) EntityManager's from the cache. If this causes users OOM errors, we could consider using SOFT references so that the EntityManager's could be GCd in low memory conditions. We also offer users a choice between an unbounded cache (size=0) and a bounded cache. Users that have problems with OOM errors, should switch to a bounded cache.
> Persistence unit hint "wildfly.jpa.emcache", may be:
> * true, per EntityManagerFactory/persistence unit) cache that is shared between multiple threads.
> * false (default), no caching is performed.
> Persistence unit hint "wildfly.jpa.emcache.size", may be:
> * 0 (default), the cache (if enabled) is unbounded.
> * N, where N is the max number of EntityManager instances that can be placed in the EntityManagerCache, in between application use.
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[JBoss JIRA] (DROOLS-3027) [DMN Designer] Differentiate zero and non zero custom data types
by Daniel José dos Santos (Jira)
[ https://issues.jboss.org/browse/DROOLS-3027?page=com.atlassian.jira.plugi... ]
Daniel José dos Santos reassigned DROOLS-3027:
----------------------------------------------
Assignee: Daniel José dos Santos (was: Guilherme Carreiro)
> [DMN Designer] Differentiate zero and non zero custom data types
> ----------------------------------------------------------------
>
> Key: DROOLS-3027
> URL: https://issues.jboss.org/browse/DROOLS-3027
> Project: Drools
> Issue Type: Task
> Components: DMN Editor
> Affects Versions: 7.12.0.Final
> Reporter: Jozef Marko
> Assignee: Daniel José dos Santos
> Priority: Major
> Labels: UX, drools-tools
> Attachments: Screenshot from 2018-09-24 18-12-02.png
>
>
> There is no visual information if no custom data type is defined. In the attached dialog we should differentiate between states when no custom da taype is declared and when some custom data types are declared. The same way we do it in list of spaces and list of projects.
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