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Invoking a Spring bean from Activiti Explorer

mialtuna

Hello,

Is it possible to invoke Spring beans after a User Task is confirmed in a Activiti Explorer?

We are deploying our Spring application war and the Activiti Explorer war in the same app server. The problem is that if after a user task confirmed using the Explorer the process has to continue with a service task that executes a Spring method, the bean is not known for the Explorer and we have got the next exception

Caused by: org.activiti.engine.impl.javax.el.PropertyNotFoundException: Cannot resolve identifier 'ourBean'
at org.activiti.engine.impl.juel.AstIdentifier.eval(AstIdentifier.java:83) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.juel.AstMethod.invoke(AstMethod.java:79) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.juel.AstMethod.eval(AstMethod.java:75) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.juel.AstEval.eval(AstEval.java:50) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.juel.AstNode.getValue(AstNode.java:26) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.juel.TreeValueExpression.getValue(TreeValueExpression.java:114) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.delegate.ExpressionGetInvocation.invoke(ExpressionGetInvocation.java:33) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25) [activiti-engine-5.10.jar:5.10]
   at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:50) [activiti-engine-5.10.jar:5.10]
‍‍‍‍‍‍‍‍‍‍‍‍

As there are 2 diferents apps, they have got their own spring contexts.

What would be the best approach to solve that problem?

Thanks in advance!

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Comments

frederikherema1

Isn't it possible to run the apps in the same wabapp (difference servlet-mappings), sharing the same application-context? If not, you should define remote-beans in the explorer-app-context that have a spring-remote counterpart in your own app. Or use any other remote technique…

mialtuna

frederikheremans thank you for your reply!

Isn't it possible to run the apps in the same wabapp (difference servlet-mappings), sharing the same application-context?

How can I do that? Adding Activiti Explorer sources in my project?

Thanks in advance!

frederikherema1

Vaadin allows streaming the resources from a jar-file, so you don't have to include sources. Take a look at the assembly.xml in activiti-webapp-explorer2, this contains a description of a jar-version of the web app, that is used in Alfresco enterprise.

Go to the folder "modules/activiti-webapp-explorer2/" and run "mvn package assembly:assembly". You'll have a jar in your target called "activiti-***-ui.jar". The only thing left to do is configure the Vaadin-servlet in your application (see the web.xml in explorer2).

You might want to alter is the "ui.properties" in the JAR-file to contain this value:
<br>activiti.ui.environment = activiti<br>
To include the activiti-context, just import "activiti-ui-context.xml" in the general spring-config.

This way, you can upgrade easily, by creating a new ui-jar from the activiti-sources and just dump in in your web app

mialtuna

Thanks again frederikheremans!

I´ve created the jar you mentions in your previous post and now I´ve got problems initializing the context. Is it necesary to edit something else in the jar to make it work with the global context?

Caused by: java.lang.NullPointerException<br> at org.activiti.explorer.navigation.TaskNavigator.<init>(TaskNavigator.java:53) [activiti-webapp-explorer2-5.11-SNAPSHOT-ui-jar.jar:]<br> at org.activiti.explorer.navigation.NavigatorManager.afterPropertiesSet(NavigatorManager.java:60) [activiti-webapp-explorer2-5.11-SNAPSHOT-ui-jar.jar:]<br> at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514) [spring-beans-3.1.1.RELEASE.jar:3.1.1.RELEASE]<br> at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) [spring-beans-3.1.1.RELEASE.jar:3.1.1.RELEASE]<br> &hellip; 20 more

mialtuna

Sorry!!

I was importing the activiti-ui.context.xml before creating taskService bean

mialtuna

There is something yet that is not working propertly….

The Activiti-Explorer throws me and exception caused becouse VAADIN widgetset is missign in root/VAADIN/ directory.

If I add this foldes manualy to the project, the login page is displayed without problems.

The problems is that when I logged in I only see a white screen.

Thanks!

frederikherema1

Is the following included in your web.xml?

<br><servlet><br>&nbsp;&nbsp; <servlet-name>Vaadin Application Servlet</servlet-name><br>&nbsp;&nbsp; <servlet-class>org.activiti.explorer.servlet.ExplorerApplicationServlet</servlet-class><br></servlet><br>

<br><servlet-mapping><br>&nbsp;&nbsp; <servlet-name>Vaadin Application Servlet</servlet-name><br>&nbsp;&nbsp; <url-pattern>/activiti-explorer2/*</url-pattern><br></servlet-mapping><br> <servlet-mapping><br>&nbsp;&nbsp; <servlet-name>Vaadin Application Servlet</servlet-name><br>&nbsp;&nbsp; <url-pattern>/VAADIN/*</url-pattern><br></servlet-mapping><br>

mialtuna

SOLVED!

frederikheremans, you are the boss!

mialtuna

Hello,

I´m upgrading to 5.11 and I´ve got a problem with the servlet mapping and the modeler.

When I try to edit a definition, a white page with Activiti BPM Suite header is shown.

I suppose that is a mapping problem but I´m getting crazy!

Can anybody help me?

Thanks in advance!

This is my mapping configuration.

<br>&nbsp; <servlet><br>&nbsp; <servlet-name>Vaadin Application Servlet</servlet-name><br>&nbsp; <servlet-class>org.activiti.explorer.servlet.ExplorerApplicationServlet</servlet-class><br>&nbsp; </servlet><br>&nbsp; <br>&nbsp;&nbsp; <!&ndash; Restlet adapter, used to expose modeler functionality through REST &ndash;><br> <servlet><br>&nbsp; <servlet-name>RestletServlet</servlet-name><br>&nbsp; <servlet-class>org.restlet.ext.servlet.ServerServlet</servlet-class><br>&nbsp; <init-param><br>&nbsp;&nbsp; <!&ndash; Application class name &ndash;><br>&nbsp;&nbsp; <param-name>org.restlet.application</param-name><br>&nbsp;&nbsp; <param-value>org.activiti.editor.rest.application.ActivitiRestApplication</param-value><br>&nbsp; </init-param><br> </servlet><br>&nbsp;&nbsp; <servlet-mapping><br>&nbsp;&nbsp;&nbsp; <servlet-name>Vaadin Application Servlet</servlet-name><br>&nbsp;&nbsp;&nbsp; <url-pattern>/activiti-explorer2/*</url-pattern><br>&nbsp; </servlet-mapping><br>&nbsp; <servlet-mapping><br>&nbsp;&nbsp;&nbsp;&nbsp; <servlet-name>Vaadin Application Servlet</servlet-name><br>&nbsp;&nbsp;&nbsp;&nbsp; <url-pattern>/VAADIN/*</url-pattern><br>&nbsp; </servlet-mapping>&nbsp; <br>&nbsp; <servlet-mapping><br>&nbsp; <servlet-name>Vaadin Application Servlet</servlet-name><br>&nbsp; <url-pattern>/activiti-explorer/*</url-pattern><br>&nbsp; </servlet-mapping><br>&nbsp;&nbsp; <br>&nbsp;&nbsp; <servlet-mapping><br>&nbsp; <servlet-name>default</servlet-name><br>&nbsp; <url-pattern>/activiti-explorer/api/*</url-pattern><br> </servlet-mapping><br><br> <servlet-mapping><br>&nbsp; <servlet-name>default</servlet-name><br>&nbsp; <url-pattern>/activiti-explorer/editor/*</url-pattern><br> </servlet-mapping><br><br> <servlet-mapping><br>&nbsp; <servlet-name>default</servlet-name><br>&nbsp; <url-pattern>/activiti-explorer/explorer/*</url-pattern><br> </servlet-mapping><br><br> <servlet-mapping><br>&nbsp; <servlet-name>default</servlet-name><br>&nbsp; <url-pattern>/activiti-explorer/libs/*</url-pattern><br> </servlet-mapping><br> <br> <!&ndash; Catch all service requests &ndash;><br> <servlet-mapping><br>&nbsp; <servlet-name>RestletServlet</servlet-name><br>&nbsp; <url-pattern>/activiti-explorer/service/*</url-pattern><br> </servlet-mapping>

trademak

Hi,

Is there a reason why you created a different set of servlet mappings?
The modeler expects the assets to be available in webapp-root/editor etc

Best regards,

mialtuna

Hi trademak,

I'm sorry but I don't understand your question. :?

I´ve got the explorer embedded in my app including it has a dependency as recommended me frederikheremans. It works perfectly. Everything works fine except the new editor functionallity.

What should I add/change in my configuration? Is there any problem to embed the new release in the same way I was embedding until now?

Thanks you!

trademak

Hi,

In the standard Activiti Explorer there's a specific set of servlet mappings like:

<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/editor/*</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/explorer/*</url-pattern>
</servlet-mapping>

<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/libs/*</url-pattern>
</servlet-mapping>

You have changed those and that's why the modeler functionality is not working.

Best regards,

btomas

Hi,
i've also got a problem with Activiti Explorer modeler embedded into my 'hello world' JSF+Spring application sharing same Spring context.

1. Go to 'Processes' -> 'Model Workspace' (the local URL http://localhost:8280/JavaServerFaces/activiti-explorer2/#processmodel/25)
2. Try to Edit my 'Demo model' by pressing the 'Edit' button the Modeler (after pressing Edit it navigates to the same 'Model Workspace' and shows the same 'Demo model'
the local URL is changed -> http://localhost:8280/JavaServerFaces/activiti-explorer2/service/editor?id=25#processmodel/25).
Creating a new model also acts the same - modeler is not opened.

* No exceptions or debug mesages appear in Tomcat
* No javascript errors (firebug used)

When 'Edit' is pressed i see two POSTS

1.
first post URL with parameters

<a href="http://localhost:8280/JavaServerFaces/activiti-explorer2/UIDL?repaintAll=1&sh=1080&sw=1920&cw=1630&ch=194&vw=1630&vh=0&fr=&tzo=-120&rtzo=-120&dstd=60&dston=false&curdate=1362148876083&wsver=6.6.2&init%1D=" rel="nofollow noopener noreferrer">http://localhost:8280/JavaServerFaces/activiti-explorer2/UIDL?repaintAll=1&sh=1080&sw=1920&cw=1630&ch=194&vw=1630&vh=0&fr=&tzo=-120&rtzo=-120&dstd=60&dston=false&curdate=1362148876083&wsver=6.6.2&init%1D=</a>

first post response here

2.
second post URL with parameters

<a href="http://localhost:8280/JavaServerFaces/activiti-explorer2/UIDL?windowName=1&c964bfa3-c92b-4928-a9f3-e6ab9faace10%1D%1FPID688%1Ffragment%1Fs=" rel="nofollow noopener noreferrer">http://localhost:8280/JavaServerFaces/activiti-explorer2/UIDL?windowName=1&c964bfa3-c92b-4928-a9f3-e6ab9faace10%1D%1FPID688%1Ffragment%1Fs=</a>

second post response here

Environment
* java
java version "1.6.0_25"
Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
Java HotSpot(TM) 64-Bit Server VM (build 20.0-b11, mixed mode)

* browser - Firefox 18.0.2 and Google Chrome 24.0.1312.57

* database - h2 in memory

* Application server - Tomcat-7.0.37

* the JSF+Spring+Activiti application
base JSF2+Spring3 application taken here and changes applied to embed the Activiti modeler based on Activiti forum post first and second
The application to reproduce the isse may be downloaded here

Questions
* What may cause the Modeler not to open and how to solve it?
* How could i debug such an issue to find out the solution?

p.s. Tijs Rademakers in his comment on February 12, 2013 at 9:42 AM has mentioned that a sample will be provided how to embed the Activiti explorer into web application. Not sure if the same integration approach gonna be used there but we're waiting for the sample!

btomas

By the way if upgrade Activiti version from 5.11 to 5.12 in my previously defined sample then the modeler is not opened exactly the same way.

btomas

i guess i have to do something with ExplorerFilter and its filter-mapping + REST servlet….. hope i'm gonna come-up with some solution shortly

cirerenat

Is this post still valid for version 5.13? I think it would be really beneficial to so many users if there's a section in the activiti user's guide to address how to deploy activiti-explorer functionality as part of another web application.
Cheers

cirerenat

To be more specific, I've followed the steps above to deploy 5.13 with my web app.
* build the activiti-webapp-explorer2-5.13-ui-jar.jar
* modified the web.xml and spring application context files.
* Started my application got some class not found errros, copied the vaadin-6.8.8.jar and activiti-simple-workflow-5.13.jar.
* Started my application but got an error regarding not being able to find activitiLoginHandler, added this to my configuration

<br>&nbsp;&nbsp;&nbsp; <bean id="activitiLoginHandler" class="org.activiti.explorer.ui.login.DefaultLoginHandler"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property name="identityService" ref="identityService" /><br>&nbsp;&nbsp;&nbsp; </bean><br>

* Now application starts fine, but when I point to the URL http://localhost:8080/myApp/activiti-explorer2/, I get
org.springframework.context.NoSuchMessageException: No message found under code 'login.username' for locale 'en_US' error.

And before I dig further, maybe I've missed a step above. Was I supposed to copy pretty much everything from the activiti-explorer to my webapp?

jbarrez

you are missing the property files with the transaltions, they are found under resources.

cirerenat

Thanks, I assumed the property file is packaged with the activiti-webapp_explorer2-5.13-ui-jar.jar file, I was wrong

alekhya

Hi,

I am new to activiti explorer. Following some documents and few videos I deployed an Activity Diagram actually deployed the .zip file which has html forms and .bpmn file. When the start the process I want the fields of html file to be displayed. Can you please suggest me what to do to get the fields displayed. Thanks in Advance

jbarrez

This needs to go in a separate post, not dig up a two year old post.