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setting the value of variable

opal

Hi,

I have the following problem. In the 'DelegateExecution' I store a 'm' variable which is an object of the class Movie and for instance has a field title of type string. Then I display this value in a form using the following piece of code (user can change the value of the field):

<input type="text" value="${m.title}">
‍‍‍

Let's make an assumption that I edit this field and change it's value (from "title1" to "title2". Then in the next (next UserTask) step I display the value once again using the following piece of code:

<td>${m.title}</td>
‍‍‍

and I expect that the value will be changed to this entered in previous step, but the value is the same. How can I handle this?

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Comments

opal

Is it even possible? No ideas?

jbarrez

Can't reproduce it here locally.

Can you post a simple version of your form + process?

opal

I will, but need some time to prepare sample.

opal

Ok, I've prepared simplified version o my process.
Here's the bpmn20.xml:

<br><?xml version="1.0" encoding="UTF-8"?><br><definitions xmlns="<a href="http://www.omg.org/spec/BPMN/20100524/MODEL" rel="nofollow noopener noreferrer">http://www.omg.org/spec/BPMN/20100524/MODEL</a>"<br> xmlns:xsi="<a href="http://www.w3.org/2001/XMLSchema-instance" rel="nofollow noopener noreferrer">http://www.w3.org/2001/XMLSchema-instance</a>" xmlns:activiti="<a href="http://activiti.org/bpmn" rel="nofollow noopener noreferrer">http://activiti.org/bpmn</a>"<br> targetNamespace="<a href="http://www.bpmnwithactiviti.org/movieOrder" rel="nofollow noopener noreferrer">http://www.bpmnwithactiviti.org/movieOrder</a>"><br><br> <process id="movieOrder" name="Order a movie"><br>&nbsp; <startEvent id="start" /><br><br>&nbsp; <sequenceFlow sourceRef="start" targetRef="parseJson" /><br><br>&nbsp; <serviceTask id="parseJson" name="Parse JSON" activiti:class="services.ParseJSONService" /><br><br>&nbsp; <sequenceFlow sourceRef="parseJson" targetRef="assignTechnician" /><br><br>&nbsp; <userTask id="assignTechnician" name="Assign the technician" activiti:candidateGroups="customers" activiti:formKey="assignTechnician.form" /><br><br>&nbsp; <sequenceFlow sourceRef="assignTechnician" targetRef="createMovie" /><br><br>&nbsp; <userTask id="createMovie" name="Create movie" activiti:formKey="createMovie.form"/><br><br>&nbsp; <sequenceFlow sourceRef="createMovie" targetRef="end" /><br><br>&nbsp; <endEvent id="end" /><br> </process><br></definitions><br>

In ParseJSONService I parse the incoming request and store m variable in the context.

<br>public class ParseJSONService implements JavaDelegate {<br><br> private GsonMapper gm = new GsonMapper();<br><br> @Override<br> public void execute(DelegateExecution de) throws Exception {<br>&nbsp; String mJson = (String) de.getVariable("movie");<br>&nbsp; Movie m = gm.fromJson(mJson, Movie.class);<br>&nbsp; de.setVariable("m", m);<br> }<br>}<br>

Movie:

<br>public class Movie implements Serializable {<br><br> private Integer id;<br> private String title;<br> private String genre;<br> private String spiCode;<br><br> //public getters and setters<br>}<br>

In assignTechnician.form I can edit some movie properties (the movie's properties are displaying well):

<br><div><br> <h1>Order</h1><br> <table><br>&nbsp; <tr><br>&nbsp;&nbsp; <td>Title</td><br>&nbsp;&nbsp; <td><input type="text" value="${m.title}"></td><br>&nbsp;&nbsp; <td>Genre</td><br>&nbsp;&nbsp; <td><input type="text" value="${m.genre}"></td><br>&nbsp;&nbsp; <td>SPI</td><br>&nbsp;&nbsp; <td><input type="text" value="${m.spiCode}"></td><br>&nbsp; </tr><br> </table><br></div><br>

I expect that on the createMovie.form I will see updated values of movie (changed in assignedTechnician.form) but this doesn't happen. createMovie.form:

<br><div><br> <h1>Order</h1><br> <table><br>&nbsp; <tr><br>&nbsp;&nbsp; <td>Title</td><br>&nbsp;&nbsp; <td>${m.title}</td><br>&nbsp;&nbsp; <td>Genre</td><br>&nbsp;&nbsp; <td>${m.genre}</td><br>&nbsp;&nbsp; <td>SPI</td><br>&nbsp;&nbsp; <td>${m.spiCode}</td><br>&nbsp; </tr><br> </table><br></div><br>

My question is: what should be done to see the updated properties o m object on the following forms in my process.

opal

Hi,

Any ideas?

frederikherema1

Hi,

The problem is that your form doesn't really set the values from your movie-pojo, you have:
<br><td><input type="text" value="${m.title}"></td><br>
While the userguide mentions this, using the "name" attribute on the input-tag:
<br><input type="text" name="employeeName" value="" /><br>
Currently the REST-API (and explorer) doesn't use the formProperties yet. If these are available, you can specify a mapping from a property on your form to a variable (or even an expression). More info on this can be found in the userguide.
<br><activiti:formProperty id="title" expression="#{m.title}" required="true" /><br>
As a current workaround, you could add a TaskListener to the userTask on event "end" that invokes setters on your movie-object with properties posted in the form.

opal

Currently the REST-API (and explorer) doesn't use the formProperties yet.

As far as I understand this functionality isn't supported yet?

The workaround might be good idea. Thanks.

frederikherema1

Indeed.
The engine API supports this. The REST-API doesn't expose this yet.