Support variable initialization per OASIS BPEL 2.0 spec ------------------------------------------------------- Key: BPEL-308 URL: https://jira.jboss.org/jira/browse/BPEL-308 Project: JBoss jBPM BPEL Issue Type: Feature Request Security Level: Public (Everyone can see) Components: Engine Affects Versions: jBPM BPEL 1.1 GA Reporter: Aleksander Adamowski Assignee: Alejandro Guizar OASIS Web Services Business Process Execution Language Version 2.0 specification, section 8.1, states that variables can be initialized upon definition: "The syntax of the <variables> declaration is: <variables> <variable name="BPELVariableName" messageType="QName"? type="QName"? element="QName"?>+ from-spec? </variable> </variables> .... A variable can optionally be initialized by using an in-line from-spec. From-spec is defined in section 8.4. Conceptually the in-line variable initializations are modeled as a virtual <sequence> activity that contains a series of virtual <assign> activities, one for each variable being initialized, in the order they are listed in the variable declarations. The virtual <assign> activities each contain a single virtual <copy> whose from-spec is as given in the variable initialization and the to-spec points to the variable being created. [SA00026] Variable initialization logic contained in scopes that contain or whose children contain a start activity MUST only use idempotent functions in the from-spec. The use of idempotent functions allows for all the values for such variables to be pre-computed and re-used on each process instance. " The Eclipse BPEL Business Process Editor supports this - one can select a variable, and in its properties panel choose "Initialization" tab, then e.g. specify From = "Expression", Expression language = "Same as Process (XPath 1.0 in BPEL 2.0)" and input an expression. Here's an example of such generated variable specification: <bpws:variable name="myVariable"> <bpws:from> <![CDATA[number(123)]]> </bpws:from> </bpws:variable> Unfortunately, jBPM BPEL ignores initialization from spec: DEBUG [org.jbpm.context.exe.VariableContainer] create variable 'myVariable' in 'TokenVariableMap10d7fa4' with value '[myVariable: null]' This feature of BPEL spec should be supported. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira