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Re:Workflow control through button click

lakshmi

Hi,

I have a requirement, that whenever a content is created i should have a additional button like 'submit to worklfow'. When a user clicks on the button, the content should follow my workflow.

Help me how to implement this.

I intially had a 'execue script as a rule', this will send my doc to wf as soon as it is created in a space. But now i need to control it with a button in UI.

pls help out

Thanks,
Lakshmi.

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lakshmi

Hi,

Let me put it in this way ,

I have a workflow.js:

var workflow = actions.create("start-workflow");
workflow.parameters.workflowName = "jbpm$wf:myWorkflow";
workflow.parameters["bpm:workflowDescription"] = document.name;
workflow.execute(document);

I set a rule 'Execute this script' in my space. Now my question is : Is it possible to execute the script on click of button in UI???

Thanks,
Lakshmi

dhalupa

Take a look at the following interface: org.alfresco.service.cmr.repository.ScriptService. The source itself is very well documented and you will get all the informations you need to execute the script.

The reference to the ScriptService could be injected in Managed Bean which will implement Action listener method of your custom button

Kind regards,

Denis

lakshmi

Hi can you pls be more clear? Just tell me if am right?

I will have to write a class that will implement the method in interface ScriptService, then in my jsp call this method thru actionlistener.

If so there are two arguments in executeScript() method. One is the scriptclasspath . Other is given as ''Object model to process script against"
What shud i pass for this argument.

Sorry am very new to alfresco and its sourde code.

Thanks,
Lakshmi

dhalupa

ScriptService is a Spring bean (declaration can be found in WEB-INF/classes/alfresco/public-services-context.xml, search for ScriptService). Reference to a Spring bean could be obtained through ServiceRegistry (getScriptService() method) or could be injected into the Managed Bean like this

 <managed-bean>
      <description>Bean that provides information for the About page</description>
      <managed-bean-name>TestBean</managed-bean-name>
      <managed-bean-class>test.Bean</managed-bean-class>
      <managed-bean-scope>session</managed-bean-scope>
      <managed-property>
         <property-name>scriptService</property-name>
         <value>#{ScriptService}</value>
      </managed-property>
   </managed-bean>
‍‍‍‍‍‍‍‍‍‍‍‍

In object model variable you have to pass references to all object you would like to have avaliable in javascript, have a look at
org.alfresco.repo.jscrip.RhinoScriptTest.java, testScriptActions() method for an example of usage

Kind regards,

Denis

lakshmi

Hi Denis,

I wrote my class and here are my entries:

faces-config-bean.xml:

<managed-bean>
      <managed-bean-name>testService</managed-bean-name>
      <managed-bean-class>org.alfresco.repo.mytest.RhinoScriptTest</managed-bean-class>
      <managed-bean-scope>session</managed-bean-scope>
      <managed-property>
          <property-name>scriptService</property-name>
          <value>#{ScriptService}</value>
         </managed-property>
</managed-bean>

In my jsp i gave:

<h:commandButton id="workflow-button" styleClass="wizardButton"
value="Start Workflow"
action="#{testService.invokeScript}"/>

invokeScript () is my method in RhinoScriptTest class, that i wrote following the example testScriptActions() method you gave.

But i get his error when i click on the commandbutton:

17:55:45,234 ERROR [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/alfresco].[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
javax.faces.FacesException: Error calling action method of component with id add-content-upload-end:workflow-button
   at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
   at javax.faces.component.UICommand.broadcast(UICommand.java:106)
   at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90)
   at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164)
   at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:316)
   at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
   at javax.faces.webapp.FacesServlet.service(FacesServlet.java:105)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
   at org.alfresco.web.app.servlet.AuthenticationFilter.doFilter(AuthenticationFilter.java:81)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
   at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
   at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
   at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
   at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
   at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.el.EvaluationException: Exception while invoking expression #{testService.invokeScript}
   at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:165)
   at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
   … 23 more
Caused by: javax.faces.el.PropertyNotFoundException: Bean: org.alfresco.repo.mytest.RhinoScriptTest, property: scriptService
   at org.apache.myfaces.el.PropertyResolverImpl.getPropertyDescriptor(PropertyResolverImpl.java:445)
   at org.apache.myfaces.el.PropertyResolverImpl.getPropertyDescriptor(PropertyResolverImpl.java:416)
   at org.apache.myfaces.el.PropertyResolverImpl.getType(PropertyResolverImpl.java:284)
   at org.apache.myfaces.config.ManagedBeanBuilder.initializeProperties(ManagedBeanBuilder.java:164)
   at org.apache.myfaces.config.ManagedBeanBuilder.buildManagedBean(ManagedBeanBuilder.java:55)
   at org.apache.myfaces.el.VariableResolverImpl.resolveVariable(VariableResolverImpl.java:311)
   at org.springframework.web.jsf.DelegatingVariableResolver.resolveVariable(DelegatingVariableResolver.java:110)
   at org.alfresco.web.app.AlfrescoVariableResolver.resolveVariable(AlfrescoVariableResolver.java:91)
   at org.apache.myfaces.el.ValueBindingImpl$ELVariableResolver.resolveVariable(ValueBindingImpl.java:569)
   at org.apache.commons.el.NamedValue.evaluate(NamedValue.java:124)
   at org.apache.myfaces.el.ValueBindingImpl.resolveToBaseAndProperty(ValueBindingImpl.java:450)
   at org.apache.myfaces.el.MethodBindingImpl.resolveToBaseAndProperty(MethodBindingImpl.java:180)
   at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:114)
   … 24 more

Pls help out.

Thanks,
lakshmi.

dhalupa

To be able to inject script service into managed bean, your managed bean has to have setter method which will be called by the JSF framework.
Therefore you have to add this to your managed bean implementation

private ScriptService scriptService;
public void setScripService(ScriptService scriptService){
    this.scriptService=scriptService
}
‍‍‍‍‍‍

Hope this helps,

Kind regards,

Denis

kevinr

Another way is to wire the script path directly into the client action config, see the 'script' parameter here: http://wiki.alfresco.com/wiki/Externalised_Client_Actions#Action_Definition_Config_Elements

Thanks,

Kevin

dhalupa

Besides another it is also much more elegant way

Kind regards,

Denis

lakshmi

Hi Denis,

Giving a setter for scriptService worked. but now when i execute the script i get the following error:

18:05:57,359 INFO [repo.mytest.RhinoScriptTest] invokeScript
18:05:58,109 INFO [repo.mytest.RhinoScriptTest] after createNode
18:05:58,125 INFO [repo.mytest.RhinoScriptTest] Before executescript
org.alfresco.service.cmr.repository.ScriptException: Failed to execute script 'o
rg/alfresco/repo/mytest/workflow.js': Can't find method org.alfresco.repo.jscrip
t.ScriptAction.execute(org.mozilla.javascript.Undefined). (AlfrescoScript#3)        at org.alfresco.repo.jscript.RhinoScriptService.executeScript(RhinoScrip
tService.java:118)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
       ……………….

My class for your ref:

    public void invokeScript()
    {
       logger.info("invokeScript");
                    StoreRef store = nodeService.createStore(StoreRef.PROTOCOL_WORKSPACE, "rhino_" + System.currentTimeMillis());
                    NodeRef root = nodeService.getRootNode(store);

                    try
                    {
                        ChildAssociationRef childRef = nodeService.createNode(
                                root,
                                BaseNodeServiceTest.ASSOC_TYPE_QNAME_TEST_CHILDREN,
                                QName.createQName(NamespaceService.SYSTEM_MODEL_1_0_URI, "script_content"),
                                ContentModel.TYPE_CONTENT,
                                null);
                        logger.info("after createNode");

TemplateNode concept
                        Map<String, Object> model = new HashMap<String, Object>();
                        model.put("doc", new Node(childRef.getChildRef(), serviceRegistry, null));
                        model.put("root", new Node(root, serviceRegistry, null));

                        logger.info("Before executescript");
                        Object result = scriptService.executeScript(TESTSCRIPT_CLASSPATH2, model);
                        System.out.println("Result from TESTSCRIPT_CLASSPATH2: " + result.toString());
                                      }
                    catch (Throwable err)
                    {
                        err.printStackTrace();

                    }

    }

private static final String TESTSCRIPT_CLASSPATH2 = "org/alfresco/repo/mytest/workflow.js";


I even packaged the class org.alfresco.repo.jscrip
t.ScriptAction along with my class. But it says 'cannot find method ', though the method is there.

I also dont know how to pass the parameters to my script. As my script is to execute workflow, i need to pass the current document reference.

I altered the container.jsp to add a button and call my action:

<tr>
<td align="center">
<h:commandButton id="workflow-button" styleClass="wizardButton"
value="Start Workflow"
action="#{testService.invokeScript}"
disabled="#{WizardManager.finishButtonDisabled}" />
</td>
</tr>
Pls help out.

lakshmi

Hi kevin,

I went thru the wiki doc you gave.

Here is what i did,

In web-client-config-custom.xml:

<actions>
<!– Launch js_test Dialog –>
<action id="js_test">
<label>Test javascript</label>
<image>/images/icons/add.gif</image>
<script>/Company Home/Data Dictionary/Scripts/workflow.js</script>
<params>
<param name="dummy">dummy1</param>
<param name="id">#{actionContext.id}</param>
</params>
</action>

<!– Add action to more actions menu for each document–>
<action-group id="document_browse">
<action idref="js_test" />
</action-group>
</actions>

I dont know how to include this action in the jsp.I found on wiki the following and included it in container.jsp (as i want a button that will execute my script once a content is created)but it throws exception when i click on it in UI:

<r:actions value="document_browse" context="#{BrowseBean.document}" showLink="false" />

Am not sure what i shud give in the 'context' here. This gives a small icon in UI, but i want a button that will just execute my script, any way i can link my action-group to a button?

dhalupa

You should follow the path presented by Kevin. Context is NodeRef of your document on which you start the workflow. Try to read this document more carefully

http://wiki.alfresco.com/wiki/Externalised_Client_Actions#Action_Definition_Config_Elements

I think that if you insist on using h:commandbutton and not r:actions that you have to use ActionService to execute the configured action inside the ActionListener method of you managed bean. Again, ActionService could be injected into the Managed Bean just as you did with ScriptService.

Example of usage is org.alfresco.web.bean.actions.RunActionWizard.java look at finishImpl method

Kind regards,

Denis

lakshmi

Hi i tried including the action group in container.jsp.
I get a icon but when i click on it i get the following error:

javax.faces.FacesException: Cannot get value for expression '#{DocumentDetailsBean.name}'
caused by:
org.apache.jasper.JasperException: Cannot get value for expression '#{DocumentDetailsBean.name}'
caused by:
javax.faces.el.EvaluationException: Cannot get value for expression '#{DocumentDetailsBean.name}'
caused by:
javax.faces.el.EvaluationException: org.alfresco.web.bean.DocumentDetailsBean
caused by:
javax.faces.el.EvaluationException: Bean: org.alfresco.web.bean.DocumentDetailsBean, property: name
caused by:
java.lang.reflect.InvocationTargetException
caused by:
java.lang.NullPointerException

code details:

web-clinet-config-custom.xml:

<actions>
<!– Launch js_test Dialog –>
<action id="js_test">
<label>Test javascript</label>
<image>/images/icons/add.gif</image>
<script>/Company Home/Data Dictionary/Scripts/workflow.js</script>
<params>
<param name="dummy">dummy1</param>
<param name="id">#{actionContext.id}</param>
</params>
</action>

<!– Add action to more actions menu for each document–>
<action-group id="document_browse">
<action idref="js_test" />
</action-group>
</actions>

container.jsp added this action:

<r:actions value="document_browse" context="#{DocumentDetailsBean.document}" showLink="false" />

Pls help out…