在 Liferay 6.2 中订阅 Add/update/delete 个文件夹

Question

您好，我想在 Liferay 的文档和媒体 portlet.

中实现文件夹的订阅功能
liferay 提供的当前功能是这样的，如果您订阅任何 folder/parent 文件夹，那么您将收到有关 add/update 个文件的电子邮件，但不会收到文件夹的电子邮件。

因此，如果您将子文件夹添加到订阅的文件夹，您将不会收到任何电子邮件。

感谢您对此提供任何帮助。

Answer 1

SubscriptionPermissionImpl 中的 hasPermission 方法仅检查 MBDiscussion、BlogsEntry、BookmarksEntry、DLFileEntry、JournalArticle、MBCategory、MBThread、WikiPage

检查SubscriptionPermissionImpl.java
的以下方法
protected Boolean hasPermission( PermissionChecker permissionChecker, String className, long classPK, String actionId) throws PortalException, SystemException {...}

因此，在实施自定义解决方案时 当我们说 subscriptionSender.flushNotificationsAsync() 时，它不会为文件夹发送电子邮件，因为 hasPermisson returns false.

并且由于 Liferay 不支持 Add/update/delete 个文件夹的电子邮件订阅，我们不得不实施我们自己的解决方案。

下面是实现此功能的步骤。

1) 为 addFolder、updateFolder 和 [= 创建一个钩子并覆盖 DLAppService 32=]moveFolderToTrash 方法。在这里我将展示如何添加文件夹订阅，其余相同。

@Override
    public Folder addFolder(long repositoryId, long parentFolderId,
        String name, String description, ServiceContext serviceContext)
        throws PortalException, SystemException {

    Folder folder = null;

    folder =
        super
            .addFolder(
                repositoryId, parentFolderId, name, description,
                serviceContext);

    MySubscriptionUtil.notifySubscribersForFolders(
        folder, serviceContext, MyDLConstants.EVENT_TYPE_ADD);

    return folder;
}

2) 这里 MySubcriptionUtil 是一个使用静态方法创建的实用程序 class。

现在在 notifySubscribersForFolders 方法中，使用文件夹对象，然后通过设置所需数据创建 subscriptionSender 对象。例如：

SubscriptionSender subscriptionSender = new SubscriptionSender();

subscriptionSender.setCompanyId(folder.getCompanyId());
subscriptionSender.setContextAttributes(
    "[$FOLDER_NAME$]", folder.getName(), "[$PARENT_FOLDER_NAME$]",
    parentFolderName, "[$SITE$]", group.getDescriptiveName());
subscriptionSender.setContextUserPrefix("FOLDER");
subscriptionSender.setFrom(fromAddress, fromName);
subscriptionSender.setHtmlFormat(true);
subscriptionSender.setBody(body);
subscriptionSender.setSubject(subject);
subscriptionSender.setMailId("folder", folder.getFolderId());
subscriptionSender.setPortletId(PortletKeys.DOCUMENT_LIBRARY);
subscriptionSender.setReplyToAddress(fromAddress);
subscriptionSender.setScopeGroupId(folder.getGroupId());
subscriptionSender.setServiceContext(serviceContext);
subscriptionSender.setUserId(folder.getUserId());

3) 现在使用 addRuntimeSubscribers() 而不是 addPersistedSubscribers()，原因如上文所述，即由于权限检查问题. 在这样做之前，使用动态查询从订阅 table 获取文件夹订阅。

    List<Long> folderIds //set this list with all parents folder ids of the folder

    // adding group id for parent folder
    /*
    * This is the default parent of any folder.
    * So if user is subscribed to home folder then 
    * he will have entry in subscription table with classPK as groupId
    */
    folderIds.add(folder.getGroupId());

    long classNameId = PortalUtil.getClassNameId(Folder.class.getName());

    DynamicQuery dynamicQuery =
        DynamicQueryFactoryUtil.forClass(Subscription.class);
    dynamicQuery.add(RestrictionsFactoryUtil.in("classPK", folderIds));
    dynamicQuery
        .add(RestrictionsFactoryUtil.eq("classNameId", classNameId));

    List<Subscription> subscriptionList =
        SubscriptionLocalServiceUtil.dynamicQuery(dynamicQuery);

    for(Subscription subscription : subscriptionList) {
        try {
            User user =
                UserLocalServiceUtil.getUser(subscription.getUserId());

            if(user.isActive()) {

                if(_log.isDebugEnabled()) {
                    _log.debug("User added to subscription list : "
                        + user.getEmailAddress());
                }

                /*
                * This is the key method call as this adds all the 
                *users to whom we need to send an email.
                */
                subscriptionSender.addRuntimeSubscribers(
                    user.getEmailAddress(), user.getFirstName()
                        + StringPool.SPACE + user.getLastName());
            }
        }
        catch(Exception e) {
            _log.error("Exception occured while fetching user @_notifySubscribersForFolders : "
                + e.getMessage());
        }
    }

    //This is the last call which will trigger the send email event
    subscriptionSender.flushNotificationsAsync();

在 Liferay 6.2 中订阅 Add/update/delete 个文件夹

Subscribe to Add/update/delete of folder in Liferay 6.2

liferay

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