Bugfixes for workflow handling.

ccm-cms/src/main/java/org/librecms/ui/contentsections/documents/DocumentWorkflowController.java

@@ -301,19 +301,19 @@ public class DocumentWorkflowController {
      * @param documentPath      The path of the currentd document.
      * @param newWorkflowUuid   The UUID of the the workflow definition form
      *                          which the new workflow is created.
-     * @param returnUrl         The URL to return to.
+     * @param returnUrlParam         The URL to return to.
      *
      * @return A redirect to the {@code returnUrl}.
      */
     @POST
-    @Path("@workflow/@applyAlternative/{workflowIdentifier}")
+    @Path("/apply-alternative")
     @AuthorizationRequired
     @Transactional(Transactional.TxType.REQUIRED)
     public String applyAlternateWorkflow(
         @PathParam("sectionIdentifier") final String sectionIdentifier,
         @PathParam("documentPath") final String documentPath,
         @FormParam("newWorkflowUuid") final String newWorkflowUuid,
-        @FormParam("returnUrl") final String returnUrl
+        @FormParam("returnUrl") final String returnUrlParam
     ) {
         final Optional<ContentSection> sectionResult = sectionsUi
             .findContentSection(sectionIdentifier);
@@ -347,18 +347,35 @@ public class DocumentWorkflowController {
             );
         }
 
-        final Optional<Workflow> workflowResult = section
+        final Optional<Workflow> workflowTemplateResult = section
             .getWorkflowTemplates()
             .stream()
             .filter(template -> template.getUuid().equals(newWorkflowUuid))
             .findAny();
-        if (!workflowResult.isPresent()) {
+        if (!workflowTemplateResult.isPresent()) {
             models.put("section", section.getLabel());
             models.put("workflowUuid", newWorkflowUuid);
             return "org/librecms/ui/contentsection/documents/workflow-not-found.xhtml";
         }
 
-        workflowManager.createWorkflow(workflowResult.get(), item);
+        final String returnUrl;
+        if (returnUrlParam.startsWith("/@contentsections")) {
+            returnUrl = returnUrlParam.substring("/@contentsections".length());
+        } else if(returnUrlParam.startsWith("@contentsections")) {
+            returnUrl = returnUrlParam.substring("@contentsections".length());
+        } else {
+            returnUrl = returnUrlParam;
+        }
+        
+        final Workflow oldWorkflow = item.getWorkflow();
+        if (oldWorkflow != null) {
+            workflowManager.removeWorkflowFromObject(oldWorkflow, item);
+        }
+        
+        final Workflow workflow = workflowManager.createWorkflow(
+            workflowTemplateResult.get(), item
+        );
+        item.setWorkflow(workflow);
         return String.format("redirect:%s", returnUrl);
     }
 

ccm-cms/src/main/java/org/librecms/ui/contentsections/documents/SelectedDocumentModel.java

@@ -32,6 +32,7 @@ import org.librecms.contentsection.Folder;
 import org.librecms.contentsection.FolderManager;
 import org.librecms.contentsection.privileges.ItemPrivileges;
 import org.librecms.ui.contentsections.FolderBreadcrumbsModel;
+import org.librecms.ui.contentsections.WorkflowTemplateListModel;
 
 import java.util.Arrays;
 import java.util.Collections;
@@ -45,6 +46,7 @@ import javax.enterprise.context.RequestScoped;
 import javax.inject.Inject;
 import javax.inject.Named;
 import javax.servlet.http.HttpServletRequest;
+import javax.transaction.Transactional;
 import javax.ws.rs.core.UriBuilder;
 
 /**
@@ -166,6 +168,11 @@ public class SelectedDocumentModel {
      */
     private List<TaskListEntry> allTasks;
     
+    /**
+     * Available workflows that can be assigned to the item.
+     */
+    private List<WorkflowTemplateListModel> availableWorkflows;
+
     public String getItemName() {
         return itemName;
     }
@@ -216,12 +223,17 @@ public class SelectedDocumentModel {
         );
     }
 
+    public List<WorkflowTemplateListModel> getAvailableWorkflows() {
+        return Collections.unmodifiableList(availableWorkflows);
+    }
+    
     /**
      * Sets the current content item/document and sets the properties of this
      * model based on the item.
      *
      * @param item
      */
+    @Transactional(Transactional.TxType.REQUIRED)
     void setContentItem(final ContentItem item) {
         this.item = Objects.requireNonNull(item);
         itemName = item.getDisplayName();
@@ -261,6 +273,14 @@ public class SelectedDocumentModel {
                 currentTask.setCurrentTask(true);
             }
         }
+        
+        availableWorkflows = item
+            .getContentType()
+            .getContentSection()
+            .getWorkflowTemplates()
+            .stream()
+            .map(this::buildWorkflowTemplateListModel)
+            .collect(Collectors.toList());
     }
 
     /**
@@ -395,4 +415,30 @@ public class SelectedDocumentModel {
             .toString();
     }
     
+    /**
+     * Helper method for building a {@link WorkflowTemplateListModel} for a
+     * {@link Workflow}.
+     *
+     * @param workflow The workflow.
+     *
+     * @return A {@link WorkflowTemplateListModel} for the {@code workflow}.
+     */
+    private WorkflowTemplateListModel buildWorkflowTemplateListModel(
+        final Workflow workflow
+    ) {
+        final WorkflowTemplateListModel model = new WorkflowTemplateListModel();
+        model.setDescription(
+            globalizationHelper.getValueFromLocalizedString(
+                workflow.getDescription()
+            )
+        );
+        model.setHasTasks(!workflow.getTasks().isEmpty());
+        model.setName(
+            globalizationHelper.getValueFromLocalizedString(workflow.getName())
+        );
+        model.setUuid(workflow.getUuid());
+        model.setWorkflowId(workflow.getWorkflowId());
+        return model;
+    }
+
 }

ccm-cms/src/main/resources/WEB-INF/views/org/librecms/ui/contentsection/documents/authoringstep.xhtml

@@ -1,5 +1,6 @@
 <!DOCTYPE html [<!ENTITY times '&#215;'>]>
 <html xmlns="http://www.w3.org/1999/xhtml" 
+      xmlns:bootstrap="http://xmlns.jcp.org/jsf/composite/components/bootstrap"
       xmlns:c="http://xmlns.jcp.org/jsp/jstl/core"
       xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
     <ui:composition template="/WEB-INF/views/org/librecms/ui/contentsection/contentsection.xhtml">
@@ -29,10 +30,72 @@
                         #{CmsAdminMessages['contentsection.document.authoring.workflow.active_workflow_label']}: 
                         #{CmsSelectedDocumentModel.workflowName}
                         <button class="btn btn-secondary btn-sm"
+                                data-toggle="modal"
+                                data-target="#change-workflow-dialog"
                                 disabled="#{!CmsSelectedDocumentModel.canChangeWorkflow ? 'disabled': ''}"
                                 type="button">
                             #{CmsAdminMessages['contentsection.document.authoring.workflow.change_workflow']} 
                         </button>
+                        <c:if test="#{CmsSelectedDocumentModel.canChangeWorkflow}">
+                            <div aria-labelledby="change-workflow-dialog-title"
+                                 aria-hidden="true"
+                                 class="modal fade"
+                                 id="change-workflow-dialog"
+                                 tabindex="-1">
+                                <div class="modal-dialog">
+                                    <form action="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@workflow/apply-alternative"
+                                          class="modal-content"
+                                          method="post">
+                                        <div class="modal-header">
+                                            <h3 class="modal-title"
+                                                id="change-workflow-dialog-title">
+                                                #{CmsAdminMessages['contentsection.document.authoring.workflow.change_workflow.title']} 
+                                            </h3>
+                                            <button aria-label="#{CmsAdminMessages['contentsection.document.authoring.workflow.change_workflow.close']} "
+                                                    class="close"
+                                                    data-dismiss="modal"
+                                                    type="button">
+                                                <bootstrap:svgIcon icon="x-circle" />
+                                            </button>
+                                        </div>
+                                        <div class="modal-body">
+                                            <c:forEach items="#{CmsSelectedDocumentModel.availableWorkflows}" 
+                                                       var="workflow">
+
+                                                <div class="form-group form-check">
+                                                    <input 
+                                                        aria-describedby="workflow-#{workflow.uuid}-description"
+                                                        id="workflow-#{workflow.uuid}"
+                                                        name="newWorkflowUuid"
+                                                        type="radio" 
+                                                        value="#{workflow.uuid}"/>
+                                                    <label for="workflow-#{workflow.uuid}">#{workflow.name}</label>
+                                                    <span class="form-text text-muted"
+                                                          id="workflow-#{workflow.uuid}-description">
+                                                        #{workflow.description}
+                                                    </span>
+                                                </div>
+                                            </c:forEach>
+                                            <input 
+                                                name="returnUrl"
+                                                type="hidden" 
+                                                value="#{authoringStep}" />
+                                        </div>
+                                        <div class="modal-footer">
+                                            <button class="btn btn-warning"
+                                                    data-dismiss="modal"
+                                                    type="button">
+                                                #{CmsAdminMessages['contentsection.document.authoring.workflow.change_workflow.close']} 
+                                            </button>
+                                            <button class="btn btn-success"
+                                                    type="submit">
+                                                #{CmsAdminMessages['contentsection.document.authoring.workflow.change_workflow.submit']} 
+                                            </button> 
+                                        </div>
+                                    </form>
+                                </div>
+                            </div>
+                        </c:if>
                     </p>
                     <p>
                         <c:choose>
@@ -40,7 +103,7 @@
                                 #{CmsAdminMessages['contentsection.document.authoring.workflow.active_task']}
                                 #{CmsSelectedDocumentModel.currentTask.label}
                             </c:when>
-                            <c:otherwise>
+                            <c:when test="#{CmsSelectedDocumentModel.workflowName != null}">
                                 #{CmsAdminMessages['contentsection.document.authoring.workflow.active_task.none']}
                                 <form action="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@workflow/@start"
                                       method="post">
@@ -53,6 +116,9 @@
                                         #{CmsAdminMessages['contentsection.document.authoring.workflow.start']}
                                     </button>
                                 </form>
+                            </c:when>
+                            <c:otherwise>
+                                #{CmsAdminMessages['contentsection.document.authoring.workflow.none']}
                             </c:otherwise>
                         </c:choose>
                         <c:if test="#{CmsSelectedDocumentModel.currentTask != null}">

ccm-cms/src/main/resources/WEB-INF/views/org/librecms/ui/contenttypes/article/article-basic-properties.xhtml

@@ -7,7 +7,7 @@
     <ui:composition template="/WEB-INF/views/org/librecms/ui/contentsection/documents/authoringstep.xhtml">
 
         <ui:param name="authoringStep" 
-                  value="/libreccm/@contentsections/info/documents/test-article/@article-basicproperties" />
+                  value="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@article-basicproperties" />
         
         <ui:define name="authoringStep">
             <h2>#{CmsArticleMessageBundle.getMessage('basicproperties.header', [CmsArticlePropertiesStep.name])}</h2>

ccm-cms/src/main/resources/org/librecms/CmsAdminMessages.properties

@@ -1010,3 +1010,7 @@ pages.page.details.dialog.category.label=Category
 pages.page.details.dialog.properties.label=Properties
 pages.page.details.dialog.properties.key=Name
 pages.page.details.dialog.properties.value=Value
+contentsection.document.authoring.workflow.none=No workflow assigned
+contentsection.document.authoring.workflow.change_workflow.title=Assign workflow
+contentsection.document.authoring.workflow.change_workflow.submit=Assign workflow
+contentsection.document.authoring.workflow.change_workflow.close=Cancel

ccm-cms/src/main/resources/org/librecms/CmsAdminMessages_de.properties

@@ -1011,3 +1011,7 @@ pages.page.details.dialog.category.label=Kategorie
 pages.page.details.dialog.properties.label=Eigenschaften
 pages.page.details.dialog.properties.key=Name
 pages.page.details.dialog.properties.value=Wert
+contentsection.document.authoring.workflow.none=Kein Arbeitsablauf zugewiesen
+contentsection.document.authoring.workflow.change_workflow.title=Arbeitsablauf zuweisen
+contentsection.document.authoring.workflow.change_workflow.submit=Arbeitsablauf zuweisen
+contentsection.document.authoring.workflow.change_workflow.close=Abbrechen

ccm-core/src/main/java/org/libreccm/workflow/WorkflowManager.java

@@ -71,10 +71,12 @@ import java.util.Optional;
  */
 @RequestScoped
 public class WorkflowManager implements Serializable {
+
     private static final long serialVersionUID = -6939804120313699606L;
 
     private final static Logger LOGGER = LogManager.getLogger(
-        WorkflowManager.class);
+        WorkflowManager.class
+    );
 
     @Inject
     private EntityManager entityManager;
@@ -105,7 +107,8 @@ public class WorkflowManager implements Serializable {
     @PostConstruct
     private void init() {
         final KernelConfig kernelConfig = confManager.findConfiguration(
-            KernelConfig.class);
+            KernelConfig.class
+        );
         defaultLocale = kernelConfig.getDefaultLocale();
     }
 
@@ -121,23 +124,29 @@ public class WorkflowManager implements Serializable {
     @AuthorizationRequired
     @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
     @Transactional(Transactional.TxType.REQUIRED)
-    public Workflow createWorkflow(final Workflow template,
+    public Workflow createWorkflow(
-                                   final CcmObject object) {
+        final Workflow template, final CcmObject object
-        Objects.requireNonNull(template,
+    ) {
-                               "Can't create a workflow without a template.");
+        Objects.requireNonNull(
+            template, "Can't create a workflow without a template."
+        );
         if (!template.isAbstractWorkflow()) {
             throw new IllegalArgumentException(
-                "The provided template is not an abstract workflow");
+                "The provided template is not an abstract workflow"
+            );
         }
 
-        Objects.requireNonNull(object,
+        Objects.requireNonNull(
-                               "Can't create a workflow without an object.");
+            object, "Can't create a workflow without an object."
+        );
 
         final Workflow workflow = new Workflow();
 
         final LocalizedString name = new LocalizedString();
-        template.getName().getValues().forEach(
+        template
-            (locale, str) -> name.addValue(locale, str));
+            .getName()
+            .getValues()
+            .forEach((locale, str) -> name.addValue(locale, str));
         workflow.setName(name);
 
         final LocalizedString description = new LocalizedString();
@@ -156,10 +165,13 @@ public class WorkflowManager implements Serializable {
             .forEach(taskTemplate -> createTask(workflow, taskTemplate, tasks));
         template
             .getTasks()
-            .forEach(taskTemplate -> {
+            .forEach(
-                fixTaskDependencies(taskTemplate,
+                taskTemplate -> {
+                fixTaskDependencies(
+                    taskTemplate,
                     tasks.get(taskTemplate.getTaskId()),
-                                    tasks);
+                    tasks
+                );
             });
 
         for (final Map.Entry<Long, Task> task : tasks.entrySet()) {
@@ -175,6 +187,20 @@ public class WorkflowManager implements Serializable {
         return workflow;
     }
 
+    @AuthorizationRequired
+    @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
+    @Transactional(Transactional.TxType.REQUIRED)
+    public void removeWorkflowFromObject(
+        final Workflow workflow, final CcmObject object) {
+        Objects.requireNonNull(workflow, "Can't delete null.");
+        Objects.requireNonNull(object);
+        
+        for(final Task task : workflow.getTasks()) {
+            taskRepo.delete(task);
+        }
+        workflowRepo.delete(workflow);
+    }
+
     /**
      * Helper method for
      * {@link #createWorkflow(org.libreccm.workflow.WorkflowTemplate, org.libreccm.core.CcmObject)}
@@ -184,15 +210,19 @@ public class WorkflowManager implements Serializable {
      * @param template The template for the task from the workflow template.
      * @param tasks    A map for storing the new tasks.
      */
-    private void createTask(final Workflow workflow,
+    private void createTask(
+        final Workflow workflow,
         final Task template,
-                            final Map<Long, Task> tasks) {
+        final Map<Long, Task> tasks
-
+    ) {
         final Class<? extends Task> templateClass = template.getClass();
         final Task task;
         try {
             task = templateClass.getDeclaredConstructor().newInstance();
-        } catch (InstantiationException | IllegalAccessException | NoSuchMethodException | InvocationTargetException ex) {
+        } catch (InstantiationException
+                 | IllegalAccessException
+                 | NoSuchMethodException
+                 | InvocationTargetException ex) {
             throw new RuntimeException(ex);
         }
 
@@ -227,8 +257,9 @@ public class WorkflowManager implements Serializable {
                     final LocalizedString localized = (LocalizedString) value;
                     final LocalizedString copy = new LocalizedString();
 
-                    localized.getValues().forEach(
+                    localized
-                        (locale, str) -> copy.addValue(locale, str));
+                        .getValues()
+                        .forEach((locale, str) -> copy.addValue(locale, str));
 
                     writeMethod.invoke(task, copy);
                 } else {
@@ -254,9 +285,11 @@ public class WorkflowManager implements Serializable {
                 .getAssignments()
                 .stream()
                 .map(TaskAssignment::getRole)
-                .forEach(role -> {
+                .forEach(
-                    assignableTaskManager.assignTask(assignableTask, role);
+                    role -> assignableTaskManager.assignTask(
-                });
+                        assignableTask, role
+                    )
+                );
         }
     }
 
@@ -270,19 +303,19 @@ public class WorkflowManager implements Serializable {
      * @param task
      * @param tasks
      */
-    private void fixTaskDependencies(final Task template,
+    private void fixTaskDependencies(
-                                     final Task task,
+        final Task template, final Task task, final Map<Long, Task> tasks
-                                     final Map<Long, Task> tasks) {
+    ) {
-
         if (template.getBlockedTasks() != null
                 && !template.getBlockedTasks().isEmpty()) {
-
             for (final TaskDependency blocked : template.getBlockedTasks()) {
 
-                final Task blockingTask = tasks
+                final Task blockingTask = tasks.get(
-                    .get(blocked.getBlockingTask().getTaskId());
+                    blocked.getBlockingTask().getTaskId()
-                final Task blockedTask = tasks
+                );
-                    .get(blocked.getBlockedTask().getTaskId());
+                final Task blockedTask = tasks.get(
+                    blocked.getBlockedTask().getTaskId()
+                );
                 try {
                     taskManager.addDependentTask(blockingTask, blockedTask);
                 } catch (CircularTaskDependencyException ex) {
@@ -297,13 +330,16 @@ public class WorkflowManager implements Serializable {
 //                -> task.addDependentTask(tasks.get(dependent.getTaskId())));
 //        }
         for (final TaskDependency blocking : template.getBlockingTasks()) {
-
+            final Task blockingTask = tasks.get(
-            final Task blockingTask = tasks
+                blocking.getBlockingTask().getTaskId()
-                .get(blocking.getBlockingTask().getTaskId());
+            );
-            final Task blockedTask = tasks
+            final Task blockedTask = tasks.get(
-                .get(blocking.getBlockedTask().getTaskId());
+                blocking.getBlockedTask().getTaskId()
+            );
             try {
-                taskManager.addDependentTask(blockingTask, blockedTask);
+                taskManager.addDependentTask(
+                    blockingTask, blockedTask
+                );
             } catch (CircularTaskDependencyException ex) {
                 throw new UnexpectedErrorException(ex);
             }
@@ -331,14 +367,18 @@ public class WorkflowManager implements Serializable {
     public List<Task> findEnabledTasks(final Workflow workflow) {
         if (workflow.getState() == WorkflowState.DELETED
                 || workflow.getState() == WorkflowState.STOPPED) {
-            LOGGER.debug(String.format("Workflow state is \"%s\". Workflow "
+            LOGGER.debug(
-                                           + "has no enabled tasks.",
+                String.format(
-                                       workflow.getState().toString()));
+                    "Workflow state is \"%s\". Workflow has no enabled tasks.",
+                    workflow.getState().toString()
+                )
+            );
             return Collections.emptyList();
         }
 
         final TypedQuery<Task> query = entityManager.createNamedQuery(
-            "Task.findEnabledTasks", Task.class);
+            "Task.findEnabledTasks", Task.class
+        );
         query.setParameter("workflow", workflow);
 
         return Collections.unmodifiableList(query.getResultList());
@@ -357,7 +397,8 @@ public class WorkflowManager implements Serializable {
     @Transactional(Transactional.TxType.REQUIRED)
     public List<Task> findFinishedTasks(final Workflow workflow) {
         final TypedQuery<Task> query = entityManager.createNamedQuery(
-            "Task.findFinishedTasks", Task.class);
+            "Task.findFinishedTasks", Task.class
+        );
         query.setParameter("workflow", workflow);
 
         return Collections.unmodifiableList(query.getResultList());
@@ -376,7 +417,8 @@ public class WorkflowManager implements Serializable {
     @Transactional(Transactional.TxType.REQUIRED)
     public List<AssignableTask> findOverdueTasks(final Workflow workflow) {
         final TypedQuery<AssignableTask> query = entityManager.createNamedQuery(
-            "AssignableTask.findOverdueTasks", AssignableTask.class);
+            "AssignableTask.findOverdueTasks", AssignableTask.class
+        );
         query.setParameter("workflow", workflow);
         query.setParameter("now", new Date());
 
@@ -392,7 +434,6 @@ public class WorkflowManager implements Serializable {
     @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
     @Transactional(Transactional.TxType.REQUIRED)
     public void start(final Workflow workflow) {
-
         final WorkflowState oldState = workflow.getState();
 
         workflow.setState(WorkflowState.STARTED);
@@ -414,10 +455,13 @@ public class WorkflowManager implements Serializable {
                     final Optional<User> currentUser = shiro.getUser();
                     if (currentUser.isPresent()
                             && assignableTaskManager
-                            .isAssignedTo((AssignableTask) firstTask,
+                            .isAssignedTo(
-                                          currentUser.get())) {
+                                (AssignableTask) firstTask,
-                        assignableTaskManager
+                                currentUser.get()
-                            .lockTask((AssignableTask) firstTask);
+                            )) {
+                        assignableTaskManager.lockTask(
+                            (AssignableTask) firstTask
+                        );
                     }
                 }
             }
@@ -437,7 +481,8 @@ public class WorkflowManager implements Serializable {
     private void updateState(final Workflow workflow) {
         if (workflow.getTasksState() == TaskState.ENABLED) {
             final TypedQuery<Long> query = entityManager.createNamedQuery(
-                "Task.countUnfinishedAndActiveTasksForWorkflow", Long.class);
+                "Task.countUnfinishedAndActiveTasksForWorkflow", Long.class
+            );
             query.setParameter("workflow", workflow);
 
             final Long result = query.getSingleResult();
@@ -451,7 +496,8 @@ public class WorkflowManager implements Serializable {
 
         if (workflow.getTasksState() == TaskState.FINISHED) {
             final TypedQuery<Long> query = entityManager.createNamedQuery(
-                "Task.countUnfinishedTasksForWorkflow", Long.class);
+                "Task.countUnfinishedTasksForWorkflow", Long.class
+            );
             query.setParameter("workflow", workflow);
 
             final Long result = query.getSingleResult();
@@ -485,9 +531,12 @@ public class WorkflowManager implements Serializable {
     @Transactional(Transactional.TxType.REQUIRED)
     public void finish(final Workflow workflow) {
         if (workflow.getTasksState() != TaskState.ENABLED) {
-            throw new IllegalArgumentException(String.format(
+            throw new IllegalArgumentException(
+                String.format(
                     "Workflow \"%s\" is not enabled.",
-                workflow.getName().getValue(defaultLocale)));
+                    workflow.getName().getValue(defaultLocale)
+                )
+            );
         }
 
         workflow.setTasksState(TaskState.FINISHED);
@@ -510,8 +559,10 @@ public class WorkflowManager implements Serializable {
 
         switch (workflow.getTasksState()) {
             case DISABLED:
-                LOGGER.debug("Workflow \"{}\" is disabled; enabling it.",
+                LOGGER.debug(
-                             workflow.getName().getValue(defaultLocale));
+                    "Workflow \"{}\" is disabled; enabling it.",
+                    workflow.getName().getValue(defaultLocale)
+                );
                 workflow.setTasksState(TaskState.ENABLED);
                 workflowRepo.save(workflow);
                 break;
@@ -521,10 +572,12 @@ public class WorkflowManager implements Serializable {
                 workflowRepo.save(workflow);
                 break;
             default:
-                LOGGER.debug("Workflow \"{}\" has tasksState \"{}\", "
+                LOGGER.debug(
+                    "Workflow \"{}\" has tasksState \"{}\", "
                         + "#enable(Workflow) does nothing.",
                     workflow.getName().getValue(defaultLocale),
-                             workflow.getTasksState());
+                    workflow.getTasksState()
+                );
                 break;
         }
     }

ccm-core/src/main/java/org/libreccm/workflow/WorkflowRepository.java

@@ -76,6 +76,7 @@ public class WorkflowRepository extends AbstractEntityRepository<Long, Workflow>
      * @return An {@link Optional} containing the {@link Workflow} identified by
      *         the provided UUID.
      */
+    @Transactional(Transactional.TxType.REQUIRED)
     public Optional<Workflow> findByUuid(final String uuid) {
         if (uuid == null) {
             throw new IllegalArgumentException(
@@ -102,6 +103,7 @@ public class WorkflowRepository extends AbstractEntityRepository<Long, Workflow>
      *         {@code object} if the object has a workflow. Otherwise an empty
      *         {@link Optional} is returned.
      */
+    @Transactional(Transactional.TxType.REQUIRED)
     public Optional<Workflow> findWorkflowForObject(final CcmObject object) {
         if (object == null) {
             throw new IllegalArgumentException(