topic trouble accessing document properties in workflow script in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/trouble-accessing-document-properties-in-workflow-script/m-p/188765#M141895 <HTML><HEAD></HEAD><BODY><SPAN>Hi to everyone, while trying to access (alfresco labs 3.0.0 (c 1342)) a document property from an advanced workflow script, I run against a number of issues, such as a NullPointerException. For instance, this syntax will not work (nor I could find the </SPAN><EM>logger</EM><SPAN> variable) :</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />&nbsp;&nbsp; &lt;task-node name="adhoc"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;task name="wf:adhocTask" swimlane="assignee"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;event type="task-create"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;script&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println("property : " + bpm_package.children[0].properties.myproperty);<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;/script&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/event&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/task&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;transition name="" to="completed" /&gt;<BR />&nbsp;&nbsp; &lt;/task-node&gt;<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>By reading alfresco sources, I managed to find out a working syntax, but rather awkward imho with respect to the wiki :</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />&nbsp;&nbsp; &lt;task-node name="adhoc"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;task name="wf:adhocTask" swimlane="assignee"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;event type="task-create"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;script&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;org.mozilla.javascript.Context.enter();<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;org.mozilla.javascript.Scriptable scope = org.mozilla.javascript.Context.getCurrentContext().initStandardObjects();<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bpm_package.setScope(scope);<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System.out.println("property before : " + bpm_package.children.get(0, null).properties.get("{<A href="http://acme.com/model/customer1/content/1.0}myproperty" rel="nofollow noopener noreferrer">http://acme.com/model/customer1/content/1.0}myproperty</A>"));<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bpm_package.children.get(0, null).properties.put("{<A href="http://acme.com/model/customer1/content/1.0}myproperty%22,%22NewValue" rel="nofollow noopener noreferrer">http://acme.com/model/customer1/content/1.0}myproperty','NewValue</A>");&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bpm_package.children.get(0, null).save();<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System.out.println("property after : " + bpm_package.children.get(0, null).properties.get("{<A href="http://acme.com/model/customer1/content/1.0}myproperty" rel="nofollow noopener noreferrer">http://acme.com/model/customer1/content/1.0}myproperty</A>"));<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;/script&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/event&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/task&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;transition name="" to="completed" /&gt;<BR />&nbsp;&nbsp; &lt;/task-node&gt;<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>As I said, this code will work, but should be much easier, shouldn't it?</SPAN><BR /><BR /><SPAN>Deatils over the exception with the first snippet (caused by bpm_package not having a context, not having a scope etc.) :</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />19:36:37,980 WARN&nbsp; [graph.action.Script] exception during evaluation of script expression<BR />Sourced file: inline evaluation of: `` &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println("property before : " + bpm_package.children[0]. . . . '' : Property accessor threw exception: java.lang.NullPointerException : at Line: 2 : in file: inline evaluation of: `` &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println("property before : " + bpm_package.children[0]. . . . '' : bpm_package .children <BR /><BR />&nbsp;&nbsp;&nbsp;at bsh.UtilEvalError.toEvalError(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.UtilEvalError.toEvalError(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHAmbiguousName.toObject(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHAmbiguousName.toObject(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHPrimarySuffix.doSuffix(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHPrimaryExpression.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHPrimaryExpression.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHBinaryExpression.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHArguments.getArguments(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHMethodInvocation.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHPrimaryExpression.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.BSHPrimaryExpression.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.Interpreter.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.Interpreter.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at bsh.Interpreter.eval(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.jbpm.graph.action.Script.eval(Script.java:130)<BR />&nbsp;&nbsp;&nbsp;at org.jbpm.graph.action.Script.eval(Script.java:73)<BR />&nbsp;&nbsp;&nbsp;at org.jbpm.graph.action.Script.execute(Script.java:62)<BR />&nbsp;&nbsp;&nbsp;at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264)<BR />&nbsp;&nbsp;&nbsp;at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220)<BR />&nbsp;&nbsp;&nbsp;at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190)<BR />&nbsp;&nbsp;&nbsp;at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174)<BR />&nbsp;&nbsp;&nbsp;at org.jbpm.taskmgmt.exe.TaskInstance.create(TaskInstance.java:170)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.workflow.jbpm.WorkflowTaskInstance.create(WorkflowTaskInstance.java:107)<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; …<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>Am I doing something wrong here? Would you like me to provide more detail about this, or submit a Jira Issue?</SPAN><BR /><SPAN>Thanks in advance,</SPAN><BR /><SPAN>Luca</SPAN></BODY></HTML> Tue, 16 Dec 2008 18:52:12 GMT luca_dallolio 2008-12-16T18:52:12Z trouble accessing document properties in workflow script https://connect.hyland.com/t5/alfresco-archive/trouble-accessing-document-properties-in-workflow-script/m-p/188765#M141895 Hi to everyone, while trying to access (alfresco labs 3.0.0 (c 1342)) a document property from an advanced workflow script, I run against a number of issues, such as a NullPointerException. For instance, this syntax will not work (nor I could find the logger variable) :&nbsp;&nbsp; &lt;task-node name="adhoc"&amp; Tue, 16 Dec 2008 18:52:12 GMT https://connect.hyland.com/t5/alfresco-archive/trouble-accessing-document-properties-in-workflow-script/m-p/188765#M141895 luca_dallolio 2008-12-16T18:52:12Z Re: trouble accessing document properties in workflow script https://connect.hyland.com/t5/alfresco-archive/trouble-accessing-document-properties-in-workflow-script/m-p/188766#M141896 <HTML><HEAD></HEAD><BODY><SPAN>I added a Jira issue, just in case… <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span></SPAN><BR /><SPAN>Leaving a note here for future memory :</SPAN><BR /><A href="https://issues.alfresco.com/jira/browse/ALFCOM-2253" rel="nofollow noopener noreferrer">https://issues.alfresco.com/jira/browse/ALFCOM-2253</A><BR /><SPAN>Thanks, Luca</SPAN></BODY></HTML> Fri, 19 Dec 2008 18:31:20 GMT https://connect.hyland.com/t5/alfresco-archive/trouble-accessing-document-properties-in-workflow-script/m-p/188766#M141896 luca_dallolio 2008-12-19T18:31:20Z