Groovy script to get Assignments element of a Kaleo Workflow definition

script_to_get_assignments_of_a_workflow_definition.groovy

import com.liferay.portal.util.*;
import com.liferay.portal.service.*;
import com.liferay.portal.model.*;
import com.liferay.portal.kernel.util.*;
import com.liferay.portal.kernel.workflow.*;
import javax.xml.parsers.*;
import javax.xml.xpath.*;
import java.io.*;
import org.xml.sax.*;
import org.w3c.dom.*;

// variables used in this groovy script
WORKFLOW_ASSIGNMENTS_XPATH = "//assignments/*";
WORKFLOW_DEFINITION_NAME = "Single Approver";
WORKFLOW_DEFINITION_VERSION = 1;


def getWorkflowDefinition() {
long companyId = PortalUtil.getDefaultCompanyId();
String name = WORKFLOW_DEFINITION_NAME;
int version = WORKFLOW_DEFINITION_VERSION;
return WorkflowDefinitionManagerUtil.getWorkflowDefinition( companyId, name, version );
}

def parseXMLToDOM(workflowDefinitionContent) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
return builder.parse(new InputSource(new StringReader(workflowDefinitionContent)));
}

def getWorkflowAssignmentsAsNodeList(doc) {
XPathFactory xPathfactory = XPathFactory.newInstance();
XPath xpath = xPathfactory.newXPath();
XPathExpression expr = xpath.compile(WORKFLOW_ASSIGNMENTS_XPATH);
return expr.evaluate(doc, XPathConstants.NODESET);
}

def getAssignments() {
WorkflowDefinition workflowDefinition = getWorkflowDefinition();
String workflowDefinitionContent = workflowDefinition.getContent();
Document doc = parseXMLToDOM(workflowDefinitionContent);
return getWorkflowAssignmentsAsNodeList(doc);
}


try {
NodeList nodeList = getAssignments();
for (int i = 0; i < nodeList.getLength(); i++) {
  Node node = nodeList.item(i);
  //@TODO: Do something with the item
  out.println("Assignment: " + node.getNodeName());
}
} catch (Exception e) {
out.println(e.getMessage());
}