topic Custom Service Task and field injection in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/custom-service-task-and-field-injection/m-p/136049#M95437 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I have a custom service task with java delegate</SPAN><BR /><BR /><PRE class="language-java line-numbers"><CODE>public class CustomServiceTask implements JavaDelegate {<BR /><BR />&nbsp;&nbsp;&nbsp; private Expression a;<BR /><BR />&nbsp;&nbsp;&nbsp; private Expression b;<BR /><BR />&nbsp;&nbsp;&nbsp; @Override<BR />&nbsp;&nbsp;&nbsp; public void execute(DelegateExecution execution) throws Exception {<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a.getValue(execution);<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b.getValue(execution);<BR />&nbsp;&nbsp;&nbsp; }<BR />}<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></CODE></PRE><BR /><BR /><SPAN>I understand that service task class will only be instantiated once and then re-used by all process instances. Does it mean that in my process definition files I cannot use this service task twice with different field values?</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />&lt;serviceTask id="javaService" name="Java service invocation" <BR />&nbsp; activiti:class="CustomServiceTask"&gt;<BR />&nbsp; <BR />&nbsp; &lt;extensionElements&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;activiti:field name="a"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;activiti:expression&gt;${varA}&lt;/activiti:expression&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/activiti:field&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;activiti:field name="b"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;activiti:expression&gt;${varB}&lt;/activiti:expression&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/activiti:field&gt;<BR />&nbsp; &lt;/ extensionElements&gt;<BR />&lt;/ serviceTask&gt;<BR /><BR /><BR />…<BR /><BR /><BR />&lt;serviceTask id="javaService2" name="Java service invocation with other params" <BR />&nbsp; activiti:class="CustomServiceTask"&gt;<BR />&nbsp; <BR />&nbsp; &lt;extensionElements&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;activiti:field name="a"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;activiti:expression&gt;${varC}&lt;/activiti:expression&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/activiti:field&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;activiti:field name="b"&gt;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;activiti:expression&gt;${varD}&lt;/activiti:expression&gt;<BR />&nbsp;&nbsp;&nbsp; &lt;/activiti:field&gt;<BR />&nbsp; &lt;/ extensionElements&gt;<BR />&lt;/ serviceTask&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>‍</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 /><BR /><SPAN>The use case is that I have a re-usable Java Service that I need to invoke multiple times during the process but with different input parameters. If I use expressions with process variables that doesn't help much: it means that I have to populate the same process variable in advance before calling the ServiceTask</SPAN><BR /><BR /><SPAN>Any help on this will be highly appreciated</SPAN><BR /><BR /><SPAN>regards,</SPAN><BR /><SPAN>Andrey</SPAN></BODY></HTML> Thu, 16 May 2013 08:07:53 GMT melentye 2013-05-16T08:07:53Z Custom Service Task and field injection https://connect.hyland.com/t5/alfresco-archive/custom-service-task-and-field-injection/m-p/136049#M95437 Hi,I have a custom service task with java delegatepublic class CustomServiceTask implements JavaDelegate {&nbsp;&nbsp;&nbsp; private Expression a;&nbsp;&nbsp;&nbsp; private Expression b;&nbsp;&nbsp;&nbsp; @Override&nbsp;&nbsp;&nbsp; public void execute(DelegateExecution execution) throws Exception {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a.getValue(execution);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b.getValue(execution); Thu, 16 May 2013 08:07:53 GMT https://connect.hyland.com/t5/alfresco-archive/custom-service-task-and-field-injection/m-p/136049#M95437 melentye 2013-05-16T08:07:53Z Re: Custom Service Task and field injection https://connect.hyland.com/t5/alfresco-archive/custom-service-task-and-field-injection/m-p/136050#M95438 <HTML><HEAD></HEAD><BODY><SPAN>Expressions + variables is the way to go.</SPAN><BR /><BR /><SPAN>I don't get what you actually want: how would you want to change the input parameters, if you don't want to change variables? Or change anything at all?</SPAN></BODY></HTML> Tue, 21 May 2013 12:16:29 GMT https://connect.hyland.com/t5/alfresco-archive/custom-service-task-and-field-injection/m-p/136050#M95438 jbarrez 2013-05-21T12:16:29Z