topic Re: Is there a demo that works? in Alfresco Archive

Is there a demo that works?

coderchris — Fri, 25 Oct 2013 17:04:35 GMT

I've been following the 10 minute demo (here: http://activiti.org/userguide/index.html#10minutetutorial) and I wanted to know if there is a demo that actually works. My upper management wants a demo of BPM in general and Activiti specifically, but I can't get the code to work. It just errors outrg

Re: Is there a demo that works?

bmarkmann — Sun, 27 Oct 2013 22:10:25 GMT

I put together a little demo that walks through a simple process; you might find it useful:

http://c20g.com/getting-started-with-activiti/

- Bill

Re: Is there a demo that works?

sheing3003 — Mon, 28 Oct 2013 05:29:45 GMT

Do the 1 minute version, basically you start tomcat and then drop the activiti.war file into webapp, it'll automatically deploy. Then just go to http://localhost:8080/activiti-explorer

Re: Is there a demo that works?

andzoff — Mon, 28 Oct 2013 10:29:03 GMT

Same problem of CoderChris.

I'm trying to run a simple activity workflow with its JUnit test. My choice is the second exercise on the Activiti In Action book.
The first exercise works (section 1.4.1 page 12), but it does not involve the H2 database.
The second exercise (section 1.4.2 page 14) involves the H2 database, and for me it's not working.
So, here is what I'm doing:

I've got eclipse with the Activiti plugin installed;
I create a new Activiti project;
In the Activiti project, in the src/main/resources I create a file [font=courier]bookorder.bpmn20.xml[/font] (see the text on the book, listing 1.3 pages 14, 15 or request it to me);
In the Activiti project, in the src/main/resources I copy the [font=courier]activiti.cfg.xml[/font] file (attached at the end of this message);
In the Activiti project, in the src/test/java, I create a JUnit Test file called [font=courier]BookOrderTest.java[/font] (see the text on the book, listing 1.4 pages 15, 16 or request it to me);
In the project's properties page I add all the required External JARs. These are the activiti pack ones and the activiti-explorer (under Tomcat) ones. After this action there are no more errors on the [font=courier]BookOrderTest.java[/font] file;
I go on the [font=courier]BookOrderTest.java[/font] file and give the Run As/JUnit Test command…

The error is:


org.apache.ibatis.exceptions.PersistenceException: 
### Error querying database.  Cause: org.h2.jdbc.JdbcSQLException: Connection is broken: "java.net.ConnectException: Connection refused: connect: localhost" [90067-170]
### The error may exist in org/activiti/db/mapping/entity/Property.xml
### The error may involve org.activiti.engine.impl.persistence.entity.PropertyEntity.selectDbSchemaVersion
### The error occurred while executing a query
### Cause: org.h2.jdbc.JdbcSQLException: Connection is broken: "java.net.ConnectException: Connection refused: connect: localhost" [90067-170]
 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23)
 at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:107)
 <bla bla something omissis>
Caused by: org.h2.jdbc.JdbcSQLException: Connection is broken: "java.net.ConnectException: Connection refused: connect: localhost" [90067-170]
 at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
 at org.h2.message.DbException.get(DbException.java:158)
 at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:399)
    <bla bla something omissis>
Caused by: java.net.ConnectException: Connection refused: connect
 at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
 at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
 … 57 more

What am I missing?
Any help would be appreciated.

Here is the [font=courier]activiti.cfg.xml[/font] file text:


<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration" >
    <!– Database configurations –>
    <property name="databaseType" value="h2" />
    <property name="jdbcUrl" value="jdbc:h2:tcp://localhost/activiti" />
    <property name="jdbcDriver" value="org.h2.Driver" />
    <property name="jdbcUsername" value="sa" />
    <property name="jdbcPassword" value="" />

    <property name="mailServerPort" value="1025"/>
    
    <property name="jobExecutorActivate" value="false" />
    
    <property name="customPostDeployers">
      <list>
        <bean class="org.activiti.engine.impl.rules.RulesDeployer" />
      </list>
    </property>
    
  </bean>
  
</beans>

Re: Is there a demo that works?

andzoff — Mon, 28 Oct 2013 11:28:37 GMT

Oh, I found the problem!
In the first working example, the JUnit test uses the following invokation:


ProcessEngine processEngine = ProcessEngineConfiguration
   .createStandaloneInMemProcessEngineConfiguration()
    .buildProcessEngine();

In the second (non working for me) example the following invokation is used:


ProcessEngine processEngine = ProcessEngineConfiguration
   .createStandaloneProcessEngineConfiguration()
    .buildProcessEngine();

The difference is in the InMem magic substring.
Well, now the mentioned error is disappeared, but I get another error that I will treat in another thread.
Thanks to the forumers reading my adventures.
Andrea

Re: Is there a demo that works?

coderchris — Mon, 28 Oct 2013 14:50:04 GMT

Bill/bmarkmann, thanks for the demo. Unfortunately, my workplace blocks access to the site. I'll take a look at it somewhere more liberal access permissions (like @ home).

Andrea/andzoff, it's nice to hear I'm not the only one encountering problems! Good luck with your adventures.

Re: Is there a demo that works?

trademak — Thu, 31 Oct 2013 09:53:39 GMT

Did you install the standalone H2 database? That's needed when not using the in-memory database.
For more info read this:

http://bpmn20inaction.blogspot.nl/2013/02/activiti-in-action-updates-part-1.html

Best regards,

Re: Is there a demo that works?

andzoff — Wed, 06 Nov 2013 13:54:35 GMT

Hi Tijs,
now all is working for me.

I've written an article representing a step-by-step walkthrough (with screenshots) to the two examples in the first chapter of Activiti in action, with some nice semplifications.
I think it could be an interesting guide for some newbies to Activiti: it's a newbie's point of view dedicated to newbies.
I've just finished to write it, and it would be an honour for me to see my article in your blog.
Please let me know if this could be ok for you.

Thank you for your presence in the forum.
Andrea

Re: Is there a demo that works?

djcameronsc — Thu, 07 Nov 2013 19:29:22 GMT

I would SURE like to see your document, Andrea…..could you email to me at icmrn@aim.com ? If there's a problem with emailing due to size or whatever, let me know, I can FTP or some other way……

Re: Is there a demo that works?

trademak — Wed, 13 Nov 2013 08:59:50 GMT

Hi Andrea, sorry for the late response. Yes definitely we would like to add it to our Activiti team feed and I can link to it from my blog. Just let me know where I can read the walkthrough.

Best regards,

Re: Is there a demo that works?

andzoff — Sat, 21 Dec 2013 06:08:17 GMT

Hi everybody, I apologize for my late response.
I submitted the article to CodeProject. The article is this:
http://www.codeproject.com/Tips/699392/Step-by-Step-your-First-journey-with-Activiti

I hope it will be useful. Don't hesitate with your feedback.
Cheers.
P.S. In January 2014, the 8th, 9th and 10th I will attend an Activiti course in Genova, Italy, with someone of the Activiti team.
I look forward for this.
Andrea

Re: Is there a demo that works?

trademak — Mon, 23 Dec 2013 11:24:15 GMT

Thanks Andrea, posted a reference on my blog so it will appear in the article list on the Activiti homepage.

Best regards,

Re: Is there a demo that works?

andzoff — Mon, 30 Dec 2013 04:07:40 GMT

Oh good!
I'm proud to be mentioned on your blog, Tijs.
Happy new year to all the forum readers.
Andrea

Re: Is there a demo that works?

djcameronsc — Tue, 07 Jan 2014 14:31:46 GMT

Andrea - Your article is Outstanding and tremendously helpful. Thank You for putting it up.

Re: Is there a demo that works?

peilers — Thu, 26 Jun 2014 14:16:48 GMT

Molto grazie Andrea!