JBPM Kie-wb process variables

[Oleg Fedorov]

Hi!

For two days i can't understand how i can get access to my process variables with data objec type (java class).
I have a data object : 

package org.spbpu.lib.recordmanipulationproj;

/**

 * This class was automatically generated by the data modeler tool.

 */

@javax.persistence.Entity

public class ActDO implements java.io.Serializable

{

   static final long serialVersionUID = 1L;

   @javax.persistence.GeneratedValue(strategy = javax.persistence.GenerationType.AUTO, generator = "ACTDO_ID_GENERATOR")

   @javax.persistence.Id

   @javax.persistence.SequenceGenerator(name = "ACTDO_ID_GENERATOR", sequenceName = "ACTDO_ID_SEQ")

   private java.lang.Long id;

   @javax.persistence.OneToMany(cascade = { javax.persistence.CascadeType.ALL }, fetch = javax.persistence.FetchType.EAGER)

   @org.kie.api.definition.type.Label("Заявки")

   private java.util.List<org.spbpu.lib.recordmanipulationproj.RecordDO> records;

   @org.kie.api.definition.type.Label("Дата")

   private java.util.Date dateDoc;

   @org.kie.api.definition.type.Label(value = "\u041D\u043E\u043C\u0435\u0440")

   private java.lang.String num;

   public ActDO()

   {

   }

   public java.lang.Long getId()

   {

      return this.id;

   }

   public void setId(java.lang.Long id)

   {

      this.id = id;

   }

   public java.util.List<org.spbpu.lib.recordmanipulationproj.RecordDO> getRecords()

   {

      return this.records;

   }

   public void setRecords(

         java.util.List<org.spbpu.lib.recordmanipulationproj.RecordDO> records)

   {

      this.records = records;

   }

   public java.util.Date getDateDoc()

   {

      return this.dateDoc;

   }

   public void setDateDoc(java.util.Date dateDoc)

   {

      this.dateDoc = dateDoc;

   }

   public java.lang.String getNum()

   {

      return this.num;

   }

   public void setNum(java.lang.String num)

   {

      this.num = num;

   }

   public ActDO(java.lang.Long id,

         java.util.List<org.spbpu.lib.recordmanipulationproj.RecordDO> records,

         java.util.Date dateDoc, java.lang.String num)

   {

      this.id = id;

      this.records = records;

      this.dateDoc = dateDoc;

      this.num = num;

   }

}

I define a variable of this type of process. 

And in script task have a code:

String tmpstr = kcontext.getVariable("teststr");
tmpstr = tmpstr + " ! END ! ";

kcontext.setVariable("teststr", tmpstr);

org.spbpu.lib.recordmanipulationproj.ActDO testObj = (org.spbpu.lib.recordmanipulationproj.ActDO)kcontext.getVariable("_actBP");

  

System.out.println("12394485584");

System.out.println(kcontext.getVariable("teststr"));

System.out.println(kcontext.getVariable("_actBP/zct"));

But сompilation fails. When using JAVA lang for script task erro is : rocess Compilation error Type mismatch: cannot convert from Object to String.
MVEL said me that it can't find this class ActDo. when i tried to use only string type i had no problems.

So, I have a question. What's wrong with my code?

Exuce for my English style. I am just learning.

[Maciej Swiderski]

What version of jBPM and Java are you running on?

Don't see anything wrong at first sight, so will try to run it today ...

Maciej

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[Oleg Fedorov]

Its JBPM 6.4.0.Final
Java 1.7

[Oleg Fedorov]

Hello again.

One more question:
In script task i can change language to JavaScript. But i cant find some good information about how i can use it inside a task. Could you explain me what kind of object have we got in and what kind of js we have (ES5 ?). Or maybe you can give a good link where i can read about it.

Oleg

[Maciej Swiderski]

Alright, this is the problem:

String tmpstr = kcontext.getVariable("teststr");

getVariable() returns Object so you need to cast it

Maciej

On 21.10.2016, at 08:58, Oleg Fedorov <odar...@gmail.com> wrote:

Its JBPM 6.4.0.Final
Java 1.7

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[Maciej Swiderski]

you have access to process variables and globals and you can use standard java script as it will be invoked by the javascript engine that comes with java.

Maciej

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[sanket joshi]

Hi Maciej,

Let's consider we have Data Object for example User with fields name and email of type String, and we want to retrieve name of user only.

I tried something like below in both java and javascript but it's returns null.

String usreName = kcontext.getVariable("user.name");

Is there any other simple way to do same..

[Maciej Swiderski]

simply use user.getName() in the script task body or you can use expression in the data input assignments #{user.getName()}

Maciej

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[Sanket Joshi]

That will be work for particular field, like in this case name only.

I have requirement where I am consuming few REST API using REST Work Item Handler.

Where all rest end point url are there in property files because it might be change in future, for example-

api.user=http://localhost:8080/micSrvice1/rest/user/name/{user.name}/department/{department.id}

Now in process I just want to replace dynamic fields with actual process data.

I need name of user but in future API may request for any other field.

[Maciej Swiderski]

use expression as I mentioned before #{user.getName()} and #{deployment.getId()}

Maciej

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[Sanket Joshi]

It's working...

I just replace all dynamic field with expression suggested by you and kept my all url listed as is in side my classpath properties.

And it's working now. 

Thank you Maciej.

[km]

String tmpstr = kcontext.getVariable("teststr");

If same line above , if i have to cast it to string in java-script how do i achieve it?