Setting Node Metadata

[roxy1987]

Hi,

I set a field in the metadata map of the nodes of a process. But when i retrieve it doesnt output the newly added key. It returns me the old keys only.

Do i need to make changes to the xml code as well? If yes then how do I do it please.

Thanks.

[roxy1987]

Anything on this please?

[joploya]

Hello,

I find this document about bpmndiagram notation.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&cad=rja&ved=0CFEQFjAE&url=http%3A%2F%2Fwww.omgwiki.org%2Fbpmn2.0-ftf%2Flib%2Fexe%2Ffetch.php%3Fid%3Dpublic%253Aspecification_documents%26cache%3Dcache%26media%3Dpublic%3A13_notation.doc&ei=aT1cUdiFAoeRtQbn4oHYDA&usg=AFQjCNFtDg5JrIswPrTIF7l5cLj1TOyQJw&sig2=mf68t6KSkKD18ortmTi8Fg&bvm=bv.44697112,d.Yms

Are you sur you can add metadatas? What is your aim?

Edit :

Metadatas are interpreted by the Editor, so if you insert new metadatas they are not recognize :

Maybe you have to create new element like this :

https://github.com/worktokenteam/worktoken/blob/master/bpmn/BPMNDI.xsd

PS : sorry if I didn't understand your question!

[roxy1987]

Thanks for your reply Sandra.

I wanna attach some information to a node. Any kind of node(Task, Script, Mail). I think that we can add elements to metadata as there is an add button. But may be some modification in the xml code is also required.

For now my motive is to know what kind of a node this is. So I am trying to attach a key "type" to the meta data map. May be you could help me with the API to do that. But ultimately I would like to know if elements could be added or not.

Thanks.

[joploya]

OK, I make search on your problem and find this :

I try to add a new field in metadata but no impact on the xml code :

But for me it seems to be normal because when we modify the flow with the graphical interface, it is transform/interpreted with the jbpm-bpmn2 package I think.

And if you see the doc in supported elements you can see that no more attributes are supported for every task :

1. 6.3. Supported elements / attributes

Table 6.1. Keywords

Element	Supported attributes	Supported elements	Extension attributes	Extension elements
definitions		rootElement BPMNDiagram
process	processType isExecutable name id	property laneSet flowElement	packageName adHoc version	import global
sequenceFlow	sourceRef targetRef isImmediate name id	conditionExpression	priority bendpoints
Activities
task	name id	ioSpecification dataInputAssociation dataOutputAssociation	taskName x y width height
scriptTask	scriptFormat name id	script	x y width height
script		text[mixed content]
userTask	name id	ioSpecification dataInputAssociation dataOutputAssociation resourceRole	x y width height	onEntry-script onExit-script
potentialOwner		resourceAssignmentExpression
resourceAssignmentExpression		expression
businessRuleTask	name id		x y width height ruleFlowGroup	onEntry-script onExit-script
manualTask	name id		x y width height	onEntry-script onExit-script
sendTask	messageRef name id	ioSpecification dataInputAssociation	x y width height	onEntry-script onExit-script
receiveTask	messageRef name id	ioSpecification dataOutputAssociation	x y width height	onEntry-script onExit-script
serviceTask	operationRef name id	ioSpecification dataInputAssociation dataOutputAssociation	x y width height	onEntry-script onExit-script
subProcess	name id	flowElement property loopCharacteristics	x y width height
adHocSubProcess	cancelRemainingInstances name id	completionCondition flowElement property	x y width height
callActivity	calledElement name id	ioSpecification dataInputAssociation dataOutputAssociation	x y width height waitForCompletion independent	onEntry-script onExit-script
multiInstanceLoopCharacteristics		loopDataInputRef inputDataItem
onEntry-script*	scriptFormat		script
onExit-script*	scriptFormat		script
Gateways
parallelGateway	gatewayDirection name id		x y width height
eventBasedGateway	gatewayDirection name id		x y width height
exclusiveGateway	default gatewayDirection name id		x y width height
inclusiveGateway	default gatewayDirection name id		x y width height
Data
property	itemSubjectRef id
dataObject	itemSubjectRef id
itemDefinition	structureRef id
ioSpecification		dataInput dataOutput inputSet outputSet
dataInput	name id
dataInputAssociation		sourceRef targetRef assignment
dataOutput	name id
dataOutputAssociation		sourceRef targetRef assignment
inputSet		dataInputRefs
outputSet		dataOutputRefs
assignment		from to
formalExpression	language	text[mixed content]
BPMNDI
BPMNDiagram		BPMNPlane
BPMNPlane	bpmnElement	BPMNEdge BPMNShape
BPMNShape	bpmnElement	Bounds
BPMNEdge	bpmnElement	waypoint
Bounds	x y width height
waypoint	x y

So maybe by modifying the org.jbpm.bpmn2 package you could add more metadatas but there is certainly another way to know in which type of node you are.

Perhaps by using directly the map variables or programmatically by retrieving the Node from the processInstance.

Regards,

[roxy1987]

Thanks Sandra. The table gives some clarification as to why adding to metadata doesnt work. I was just curious since there was an add button. But may be I could modify the package, as you suggested.

To check the type though, I think I am gonna retrieve the class name from the node and check what class it belongs to. Thanks a lot.