L’intérêt de cette solution est de pouvoir mettre en place des mécanismes complexes de calcul des participants. On peut par exemple imaginer de calculer le n+1 de l'utilisateur courant.

package org.esupportail.esupsignature.service.workflow.impl;

import org.esupportail.esupsignature.entity.Data;
import org.esupportail.esupsignature.entity.User;
import org.esupportail.esupsignature.entity.WorkflowStep;
import org.esupportail.esupsignature.entity.enums.SignType;
import org.esupportail.esupsignature.exception.EsupSignatureUserException;
import org.esupportail.esupsignature.service.RecipientService;
import org.esupportail.esupsignature.service.UserService;
import org.esupportail.esupsignature.service.WorkflowService;
import org.esupportail.esupsignature.service.workflow.DefaultWorkflow;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.List;

@Component
public class BasicWorkflow extends DefaultWorkflow {

   private String name = "BasicWorkflow";
   private String description = "Une signature";

   @Resource
   private WorkflowService workflowService;

   @Resource
   private UserService userService;

   @Resource
   private RecipientService recipientService;

   @Override
   public String getName() {
      return name;
   }

   @Override
   public String getDescription() {
      return description;
   }

   @Override
   public List<WorkflowStep> generateWorkflowSteps(User user, Data data, List<String> recipentEmailsStep) throws EsupSignatureUserException {
      List<WorkflowStep> workflowSteps = new ArrayList<>();
/* on cree et on ajoute les étapes du workflow ici */
      WorkflowStep workflowStep = new WorkflowStep();
      workflowStep.setStepNumber(1);
      workflowStep.setSignType(SignType.pdfImageStamp);
      workflowStep.setDescription("Choix du signataire");
      workflowStep.setChangeable(true);
      if(data != null) {
         workflowStep.setRecipients(workflowService.getFavoriteRecipientEmail(1, data.getForm(), recipentEmailsStep, user));
      } else {
         workflowStep.getRecipients().add(recipientService.createRecipient(null, userService.getGenericUser("Utilisateur issue des favoris", "")));
      }
      workflowSteps.add(workflowStep);
      return workflowSteps;
   }
}