6 Replies Latest reply on Mar 15, 2017 4:17 PM by diego-torres

Retrieving Form Data with kie server rest api

rodrigo.burdet Mar 3, 2017 4:30 PM

Hello. Im working on a UI to work with BPM processes / tasks. To accomplish this, im using kie server REST API.

The problem im facing is that i cant get the necessary form data to make my own form to start a new process.

This happens because an api call to http://{server}/kie-server/services/rest/server/containers/{container}/forms/processes/{pId}?filter=true doesnt bring subforms information, neither dataHolder's values if the values are custom types.

Is there a workaround to this problem using the kie rest api?

Im using BPM 6.4 on EAP 6.4

Best Regards

1. Re: Retrieving Form Data with kie server rest api

diego-torres Mar 4, 2017 9:13 AM (in response to rodrigo.burdet)

Hello Rodrigo.
Please look at this implementation:
GitHub - diego-torres/subform-ticket: jBpm get sub-form demo.
And let me know if your implementation is somehow different or if it works for you.
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2. Re: Retrieving Form Data with kie server rest api

dmarrazzo Mar 5, 2017 2:31 AM (in response to rodrigo.burdet)

Hello Rodrigo,
are serializable your custom type?
can you provide a reproducer?
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3. Re: Retrieving Form Data with kie server rest api

rodrigo.burdet Mar 6, 2017 12:03 PM (in response to diego-torres)

Your example works for me. But when i try to add another subform in the same parent form, your solution does not work.

In your example i added a IssueList subform and the response i get:
{
"form": {
    "dataHolder": [
      {
        "id": "issueList",
        "inputId": "",
        "name": "#E9E371",
        "outId": "issueLIst",
        "type": "dataModelerEntry",
        "value": "org.acme.ticket_support.IssueList"
      },
      {
        "id": "ticket",
        "inputId": "",
        "name": "#E9E371",
        "outId": "ticket",
        "type": "dataModelerEntry",
        "value": "org.acme.ticket_support.Ticket"
      }
    ],
    "displayMode": "default",
    "field": [
      {
        "defaultSubform": "component-ticket.form",
        "errorMessage": ",,,,,,,,",
        "fieldClass": "java.lang.Object",
        "fieldRequired": false,
        "groupWithPrevious": false,
        "id": 1575399852,
        "inputBinding": "ticket",
        "label": ",,,Subform2,ticket,,,,",
        "name": "ticket",
        "outputBinding": "ticket",
        "position": 0,
        "readonly": false,
        "title": ",,,,,,,,",
        "type": "Subform"
      },
      {
        "addItemText": ",,,,,,,,",
        "bag-type": "org.acme.ticket_support.Issue",
        "cancelItemText": ",,,,,,,,",
        "defaultSubform": "issue-subform.form",
        "deleteItems": true,
        "enableTableEnterData": false,
        "errorMessage": ",,,,,,,,",
        "expanded": false,
        "fieldClass": "java.util.List",
        "fieldRequired": false,
        "hideCreateItem": false,
        "id": 272361770,
        "label": "SSClass,SSStyle,,,,issueList (issueList),,,,,",
        "name": "issueList_issueList",
        "newItemText": ",,,,,,,,",
        "outputBinding": "issueLIst/issueList",
        "position": 1,
        "previewSubform": "issue-subform.form",
        "readonly": false,
        "tableSubform": "issue-subform.form",
        "title": ",,,,,,,,",
        "type": "MultipleSubform",
        "updateItems": true,
        "visualizeItems": true
      }
    ],
    "id": 1417469681,
    "name": "ticket-support.support-taskform.form",
    "status": 0
}
}

Which still hides subform information
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4. Re: Retrieving Form Data with kie server rest api

rodrigo.burdet Mar 6, 2017 12:11 PM (in response to dmarrazzo)

Dear Donato. No, my custom type is not serializable. But a curious fact is that having only one subform with non-serializable data works well. Adding another subform breaks the hole thing.

Regards
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5. Re: Retrieving Form Data with kie server rest api

rodrigo.burdet Mar 6, 2017 12:41 PM (in response to rodrigo.burdet)

Here is an implementation with 2 subforms that doesnt work

GitHub - NickCis/subform-ticket: jBpm get sub-form demo.
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6. Re: Retrieving Form Data with kie server rest api

diego-torres Mar 15, 2017 4:17 PM (in response to rodrigo.burdet)

I am observing this few things:
1. In the EAP log I found the following error logged by the kie-server:

2017-03-15 15:26:13,461 ERROR [stderr] (default task-57) java.lang.NullPointerException 2017-03-15 15:26:13,462 ERROR [stderr] (default task-57) at org.kie.server.services.jbpm.ui.form.InMemoryFormProvider.filterXML(InMemoryFormProvider.java:214) 2017-03-15 15:26:13,462 ERROR [stderr] (default task-57) at org.kie.server.services.jbpm.ui.form.InMemoryFormProvider.render(InMemoryFormProvider.java:87)...

Is that something you can also see?

2. I add fields "by origin", as the inbound/outbound linking is made automatically for me I don't have to further change that. I am observing that you are adding fields "by type" and then adding the properties to tie them to inbound/outbound variable mappings right?

By the log it seems to be missing a reference to the "outboundBinding", but I will keep researching how that is getting missed because as far as I can see to this moment, all configurations are in place for inbound/outbound.
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