Question

我在tomcat上的j2ee应用程序中使用Jackrabbit 2.0与java 1.7。我想至少在rootnode下版本一个usernode，并在那个版本化的lessonnode和版本化的filecardnode下。每个，包含序列化对象作为属性的lesson-和filecardnode。我能够恢复每一个，但我希望在给定版本的一个课程节点下接收一个冻结节点，该节点将所有文件卡节点保存到那个时间....但是如果我搜索子节点，那就没有子节点。任何建议我做错了什么，或者我在规格中理解错误。

这是我保存节点的方式：

    public Node insertNewLessonNode(String userID, LessonEntity lessonEntity,
        Session session) throws PathNotFoundException, RepositoryException,
        IOException {
    //that adds a usernode if not there already 
    Node userNode = handleLessonParentNodes(lessonEntity, userID, session);

    Node lessonNode = userNode.addNode(LESSON
            + lessonEntity.getID(), "nt:unstructured");
    lessonNode.addMixin("mix:versionable");
    lessonNode.setProperty("id", lessonEntity.getID());
    lessonNode.setProperty("data", JRUtils.serializObject(lessonEntity));
    session.save();
    session.getWorkspace().getVersionManager()
            .checkin(lessonNode.getPath());

    System.out.println("Lesson "
            + session.getWorkspace().getVersionManager()
                    .getBaseVersion(lessonNode.getPath()));

    return lessonNode;
}

public Node insertNewFileCardNode(Node lessonNode,
        FileCardEntity fileCardEntity, String userID, Session session)
        throws UnsupportedRepositoryOperationException,
        RepositoryException, IOException {

    nodeCheckout(lessonNode, session);

    Node fileCardNode = null;
    fileCardNode = lessonNode.addNode(FILECARD + fileCardEntity.getID(),
            "nt:unstructured");
    fileCardNode.addMixin("mix:versionable");

    fileCardNode
            .setProperty("data", JRUtils.serializObject(fileCardEntity));
    session.save();
    session.getWorkspace()
            .getVersionManager()
            .checkin(
                    lessonNode.getPath() + DEL + FILECARD
                            + fileCardEntity.getID());

    System.out.println("FileCard "
            + session
                    .getWorkspace()
                    .getVersionManager()
                    .getBaseVersion(
                            lessonNode.getPath() + DEL + FILECARD
                                    + fileCardEntity.getID()));

    return fileCardNode;
}

这就是我恢复它的方式：

     public void restoreLesson(String lessonId,
        String userID, String versionName) throws SQLException, VersionException, ItemExistsException, UnsupportedRepositoryOperationException, LockException, InvalidItemStateException, RepositoryException {
    Session session = JRRepository.getInstance().getSession();
    String userNodePath = session.getRootNode().getNode(USER + userID)
            .getPath();
    String absPath = userNodePath + DEL + LESSON+lessonId;
    VersionHistory versionHistory = session.getWorkspace()
            .getVersionManager().getVersionHistory(absPath);
    VersionIterator iterator = versionHistory.getAllVersions();




    LessonEntity lessonEntity = null;

    while (iterator.hasNext()) {
        Version version = (Version) iterator.next();
        if (version.getName().equals(versionName)) {
            Node frozenNode = version.getFrozenNode();
            Value value = frozenNode.getProperty("data").getValue();

            //here i expect a few of my filecardnodes...but theres nothin...
            //i tried already with differened searchpatterns
            for (NodeIterator iterator3 = frozenNode.getNodes("nt:unstructured"); iterator3.hasNext();) {
                Node type = (Node) iterator3.next();
                System.out.println(type.getName());
            }

            Object ob = JRUtils.deSerializeObject(value.getBinary());

            lessonEntity = (LessonEntity) ob;

        }
    }

    session.getWorkspace().getVersionManager()
            .restore(absPath, versionName, false);
    List<LessonEntity> updateList = new ArrayList<LessonEntity>();
    lessonEntity.setLastModified(new Date());
    updateList.add(lessonEntity);
    lessonDao.updateLessons(updateList, userID);

    session.logout();

}

任何帮助将不胜感激....提前感谢！

Answer 1

如果您希望能够检索版本化节点的子节点，则必须只创建父版本。

当您将父和设为子版本时，它们将存储为单独的version，因此它们之间没有链接。如果您执行想要使它们都具有版本，那么您必须添加自己的属性才能将特定版本的filecardnode与特定版本的lessionnode相关联。< / p>

如何在jackrabbit中正确添加可版本化节点

1 个答案: