jBPM4 用户与开发者指南：4.4 版更新详情

jBPM 4 Readme
    
User guide: http://docs.jboss.com/jbpm/v4/userguide/html_single/
Describes the stable and supported ways of working with jBPM.

API documentation: http://docs.jboss.com/jbpm/v4/javadocs/
Presents the stable and supported programming interface.

Developer guide: http://docs.jboss.com/jbpm/v4/devguide/html_single/
Describes more configuration, usage and tweaking options,
unleashing all the flexibility in jBPM. Be warned that features in the
developer guide are not guaranteed to be forward compatible.

The user and developer guides do not display well on Internet Explorer.
Only Firefox renders them properly. This issue will be fixed in a future version.
See https://jira.jboss.org/jira/browse/JBPM-1895
    
Release Notes for jBPM 4.4

API changes

* New interfaces: Activity and Transition
* Execution.getSubProcessInstance() retrieves the sub-process reference
* OpenExecution.getActivity() returns the activity being executed
* HistoryActivityInstance.getTransitionNames() gives the names of the
  transitions over which the activity was left
* HistoryActivityInstanceQuery.processInstanceId() selects activity
  instances for a given process instance only
* HistoryProcessInstanceQuery.ended() selects process instances that have
  ended only

* ExecutionService.createVariable() creates a variable with optional
  history tracing
* HistoryService.getVariable() retrieves the latest value of a
  history-traced variable
* ManagementService.deleteJob() deletes a specific job

jPDL changes

* New activities: foreach and assign
* Process variable declarations
* Expression in join multiplicity attribute
* Custom mail producer descriptor in mail activity
* Object descriptor in argument
* Cache attribute in object descriptor
* Most elements can appear in any order within their parent
* Improved documentation readability

Database changes

No database changes were introduced between 4.3 and 4.4.

Issue list

** Bug
    * [JBPM-2444] - sub-process-key does not evaluate EL
    * [JBPM-2478] - jBPM4 and Spring: unintended wiring PropertiesFactoryBean to RepositoryCacheImpl.deployments field
    * [JBPM-2495] - No history recorded for custom activities
    * [JBPM-2537] - A triggered timer does not end the task which is left
    * [JBPM-2560] - Task definition does not have some properties set from jPDL task element
    * [JBPM-2562] - Document how getWebServiceHost and getWebServicePort have to be configured