nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.

Adding children to store root

hsjawanda

Hi,

I have been trying a few things, have been getting unexpected results, and now I am confused. So here are my questions:

Is there anything special about adding a node (say, a folder) directly as a child of a store root? I have a store with protocol "workspace" – will the following code work for adding a folder directly under the store root:

// this.storeRef points to the store I am interested in.
NodeRef rootNode = nodeService.getRootNode(this.storeRef);

// Creating a folder as a direct child of storeRef
ChildAssociationRef childAssocRef = nodeService.createNode(rootNode,
        ContentModel.PROP_CONTAINS, QName.createQName(
                NamespaceService.CONTENT_MODEL_1_0_URI, folderName),
        ContentModel.TYPE_FOLDER);
‍‍‍‍‍‍‍‍‍‍

Does it matter whether I use ContentModel.PROP_CONTAINS or some other QName as the assocTypeQName when adding a child to a store's root?

What are the differences between creating child associations and creating plain-jane associations (NodeService#createAssociation())? I think one of the differences is that (recursive) searching under a parent node will search those nodes related through child associations, but not those related through plain associations – is this correct?

If I don't put any "PATH:" term in my Lucene search, does the whole store get searched? For example, if I construct a query like this:

String query = "+TYPE:\"" + ContentModel.TYPE_FOLDER.toString() + "\"";
‍‍‍

will I get back a list of all the folders in the store being searched? Will the assocTypeQName I use while adding children make a difference to the results of the above query?

I apologize for asking so many questions in a single post, but I am getting confused by some of the results I am seeing :-).

Thanks.

Find more posts tagged with

Comments

rwetherall

Hi,

No there is nothing special about the the root node other than its association to its children is called 'children' rather than a folder which is called 'contains'.

I've updated the code below to reflect this:

// this.storeRef points to the store I am interested in.
NodeRef rootNode = nodeService.getRootNode(this.storeRef);

// Creating a folder as a direct child of storeRef
ChildAssociationRef childAssocRef = nodeService.createNode(rootNode,
        ContentModel.PROP_CHILDREN, QName.createQName(
                NamespaceService.CONTENT_MODEL_1_0_URI, folderName),
        ContentModel.TYPE_FOLDER);
‍‍‍‍‍‍‍‍‍‍

What are the differences between creating child associations and creating plain-jane associations (NodeService#createAssociation())?

* A child association implies a hierarchy between nodes.
* An association is a relationship between two nodes (with no hierarchy).

Cheers,
Roy

hsjawanda

Hi Roy,

No there is nothing special about the the root node other than its association to its children is called 'children' rather than a folder which is called 'contains'.

This is only a naming convention, right? Will any constraints be violated if the wrong child-association name gets used?

Deleting a container node deletes its children too, right?

Thanks for your reply to my first posting.

rwetherall

Hi,

Yes, the name of the association can be anything you want, it is the type of the association (eg: 'children') that must follow the model defintion.

Yes, when a node is deleted its children are deleted too.

Cheers,
Roy

soeursourire

I was thinking I understood how to add a new node in MySQL and I wanted to add a node function in this database under the node People at the same level than Person but not in the node Person. (Person and function are brothers). So I was doing as follow:

- a new class FunctionService that is almost exactly the same than PersonServiceImpl

- in MyNewUserWizard in init() I initialize my function service :
this.functionService = new FunctionService();
this.functionService.setNodeService(this.nodeService);
this.functionService.setSearchService(this.searchService);
//this.functionService.setStoreRef(Repository.getStoreRef());

-in MyNewUserWizard in startWizardForEdit() I added this:
Node nodeFN = new Node(ref); setFunction(nodeFN);
I have a node Node function;

-in MyNewUserWizard in populate() I added this:
Map<String, Object> propsFN = getFunction().getProperties();

-And in finish(), I added :
Map<QName, Serializable> propsFN = new HashMap<QName, Serializable>(5);
propsFN.put(MyContentModel.PROP_FN_ID, this.functionId);
String assocNameFN = QName.createValidLocalName(String.valueOf(this.functionId));
NodeRef newFunction = this.functionService.createFunction(propsFN);

However, while doing that when I call the function finish() I have errors such as Java.lang.NullPointerException. I have apparently a problem in getPeopleContainer (called by createFunction) while doing this:
NodeRef rootNodeRef = this.nodeService.getRootNode(storeRef);
List<NodeRef> results = searchService.selectNodes(rootNodeRef, PEOPLE_FOLDER, null, namespacePrefixResolver, false);

What do I do wrong here?
Thanks for help.

soeursourire

I found the problem… my NameSpacePrefixResolver was null. So now I can add a node function in the node People at the same level than the node person however while browsing the NodeBrowser if I first check a node person then the node function has the same properties than person and respectively. And then when I want to check again the node function I have this error:

cannot add component with id 'aspects' and path : {Component-Path : [Class: javax.faces.component.html.HtmlDataTable,Id: aspects]} to its parent component. This might be a problem due to duplicate ids.

I hope somebody will agree for helping me.. thanks

gavinc

This is more than likely a bug with the node browser. This error happens in JSF sometimes when a component is not given an explicit id.

Try closing the node browser and returing to it as a workaround.

An issue in JIRA has been raised for this: http://www.alfresco.org/jira/browse/AWC-563

soeursourire

Thanks a lot for the answer. So does that mean as well that when I go in my node function and I see the properties of my node person instead it is a bug of nodebrowser? How and where can I check in the database if my nodes are correctly filled?

I also noticed than when I delete some users that I created, they are removed from node browser but all usernames are kept in the database, is it normal?
Thus I wanted to delete some of these usernames from MySQL by command line but now I cannot log in to Alfresco as admin…

Thanks again

soeursourire

My god!! Help please!
Since I modified something in the database I cannot log in as admin and have this error page:

javax.portlet.PortletException: Error calling action method of component with id loginForm:submit

caused by:
javax.faces.FacesException: Error calling action method of component with id loginForm:submit

caused by:
javax.faces.el.EvaluationException: Exception while invoking expression #{LoginBean.login}

caused by:
org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [org.alfresco.repo.security.permissions.impl.hibernate.RecipientImpl#org.alfresco.repo.security.permissions.impl.hibernate.RecipientImpl@35f5b8]

What can I do now? I reinstalled MySQL and installed the last version of Alfresco and have this error!!

kevinr

Your issue may be related to this problem?
http://www.alfresco.org/forums/viewtopic.php?t=1125&highlight=

It looks like a similar error (it may not be) - keep an eye on the post and we should resolve it soon.

Kevin

soeursourire

Thanks for the fast answer.
Is there a wiki or documentation about the structure of the database (a entity-relationship diagram)?

Where can I check the properties values of a node person (from node people) in the database by sql command line?

Thanks

kevinr

This query will find the users from the node_properties table:

select string_value, guid from node_properties where protocol='user' and qname='{http://www.alfresco.org/model/user/1.0}username';
‍‍‍

Get the value the "guid" column value for the user you are interested in, then execute something like this to see all the properties for that user instance:

select * from node_properties where guid='9e86231c-9cb7-11da-a085-9f5761485f4e';
‍‍‍

Remember that the passwords field is encrypted.

Hope this helps,

Kevin

soeursourire

Thanks for help. So that allows me to access the users properties (username, password…) but not the person properties (firstname, lastname, etc…) ?

Please would you mind telling me where the node 'People' ("/sys

eople") is created in the code? the node 'person' is created while creating a user in PersonService but where is created the node 'people'?

Thanks.

soeursourire

Oki I found… it is done while calling the function getPeopleContainer right?

Another question… in the function startWizardForEdit from NewUserWizard what does this code means:

UIActionLink link = (UIActionLink) event.getComponent();
Map<String, String> params = link.getParameterMap();
String id = params.get("id");

What is this id? the uuid of the node?
If I am creating 2 different nodes during this newuserwizard, how will he choose which uuid to use? How can I be sure that if I create two different nodes in sys:system I will have different uuid for the children of the first node and the children of the second node?

Thanks in advance

soeursourire

Another question as well…
I am able to create a new node Functions under System. Then I create nodes function in Functions. But in the NodeBrowser it appears that the node function I create has the same uuid than the node person that I create at the same time. Can it be due to nodebrowser bug? or because I am badly using userTransaction?

Then I wanted to add a class FunctionsBean similar to UsersBean to display all functions in my jsp page users.jsp however I have error message in my jsp page saying that it cannot find my functionService, where should I define the bean functionService and the bean FunctionsBean? in faces-config, in application-context, in authentication-context, in network-protocol..?

soeursourire

I think I managed to add my nodes correctly but now I would like to get all nodes like when you get all person nodes with the class UsersBean. But I do not understand how this UsersBean is instantiate (where and when the nodeService is defined for example)?

<a:richList id="users-list" binding="#{UsersBean.usersRichList}" viewMode="details" pageSize="10"
styleClass="recordSet" headerStyleClass="recordSetHeader" rowStyleClass="recordSetRow" altRowStyleClass="recordSetRowAlt" width="100%"
value="#{UsersBean.users}" var="r" initialSortColumn="userName" initialSortDescending="true">

gavinc

Hi,

UsersBean is a JSF managed bean, as such it is defined in the JSF configuration files (in our case faces-config-beans.xml). The JSF framework instantiates the bean when it is required. The NodeService is also defined in the config file as a managed property, this means the nodeService object is "injected" into the bean, ready for your code to use.

I would highly recommend doing some background reading on JSF, there are several great sites with loads of articles and tutorials, some we've found useful are:

http://www.jsftutorials.net
http://www.jsfcentral.com
http://www-128.ibm.com/developerworks/library/j-jsf1 (series of 4 articles introducing JSF)

These may help answer a few of your questions and give you a better insight into how the Alfresco web client works.

Hope this helps

kevinr

Gavin is correct. Also to understand the architecture of how our services are defined and configured using Spring you should take a look at the Spring Framework tutorials and do a a little background reading. Once you are familiar with JSF and Spring you are ready to get deeper in Alfresco.

http://www.theserverside.com/resources/article.jsp?l=SpringFramework
http://www.springframework.org/documentation

Thanks,

Kevin

soeursourire

Thanks a lot for your advices. I started looking at the documentation and I am getting more familiar to JSF.

Now I am getting into troubles while doing this:

List<ChildAssociationRef> childRefs = nodeService.getChildAssocs(functionRef);

although my nodeService and functionRef seem correct (good reference):
functionRef= workspace://SpacesStore/e79e7952-a87a-11da-ab9f-0774da8876d0
nodeService= org.alfresco.repo.node.db.DbNodeServiceImpl@1e932fcf
storeRef= workspace://SpacesStore

And I get this error message:
A system error happened during the operation: Bad credentials presented

What kind of error is it? Can it be due to my insertion of nodes in the repository (when I add a node Functions under system and some nodes function in Functions)?

Thanks again

soeursourire

In your WIKI when you are talking about XPath Search while doing that:
List<ChildAssocRef> answer = nodeService.selectNodes(rootNodeRef, "*", null, namespacePrefixResolver, false);

I guess it is a mistake, nodeService has no selectNodes. We should use searchService right?

kevinr

Yes you are quite correct - that should be the searchService.

Thanks for spotting that, we'll change it.

Kevin

soeursourire

Sure:-)

I got into troubles again with a page navigation… I would like to add an action in browse.jsp in order to access the list of people and create a user thus I want to have in the list of action "manage users" and when I click on it I open users.jsp. So I was adding this code as follow in browse.jsp but when I click the page does not open and stay on browse.jsp:

<r

ermissionEvaluator value="#{NavigationBean.currentNode}" allow="Write" id="ef_eval1">
<a:actionLink value="#{Fmsg.manage_users}" image="/images/icons/users.gif" action="manageUsers" styleClass="title" actionListener="#{NewUserWizard.setupUsers}" />
</r

ermissionEvaluator>

What is wrong here? And what is the currentNode here?

Thanks in advance

kevinr

If you want your view (browse.jsp) to be able to navigate to the users.jsp page then you need to add a navigation handler element to the faces-config-navigation.xml file. This is basic JSF knowledge, you should walk through a few basic JSF tutorials on the web to understand how this works.

To add it, edit the faces-config-navigation.xml file, find this section:

   <navigation-rule>
      <from-view-id>/jsp/browse/browse.jsp</from-view-id>
‍‍‍‍

and add this new navigation case:

      <navigation-case>
         <from-outcome>manageUsers</from-outcome>
         <to-view-id>/jsp/users/users.jsp</to-view-id>
      </navigation-case>
‍‍‍‍‍‍

The currentNode object is the current space the user is viewing.

This allows the browse.jsp page to navigate to the users.jsp page.

Kevin

soeursourire

Thanks a lot..actually I was just finding my error :?

soeursourire

I have some problems of configurations:
- I developped a sub-class of UsersBean in the web-client but in this class I need to get storeRef. So when I define my bean in the faces-config.xml I wanted to add this:
<managed-property>
           <property-name>storeUrl</property-name>
          <value>${spaces.store}</value>
      </managed-property>
But this spaces.store is defined in repository side in repository.properties. So should I add a bean in faces-config to call repository.properties or use directly Workspace\\store…?

soeursourire

Why while doing this in my subclass of UsersBean I have credential problems??

NodeRef rootNodeRef = this.nodeService.getRootNode(Repository.getStoreRef());

soeursourire

Please help…I am blocked with this problem of permissions….
I do not understand why I cannot do this code in my class added to the WebClient:

NodeRef rootNodeRef = nodeService.getRootNode(Repository.getStoreRef());

although I added variable nodeService to my class with setNodeService and I added my class bean in faces-config.xml. I also tried to give permission to the connected user to access the nodeService as follow:
this.permissionService.setPermission(nodeService.getRootNode(Repository.getStoreRef()), connectedUsername, this.permissionService.getAllPermission(), true);

Are operations on nodeService only possible from Repository? I guess not seeing that we have this.nodeService.getRootNode(Repository.getStoreRef()) from the class NewUserWizard. How should I choose where to create my classes (under Repository or WebClient)?

Should we use transaction only from the Repository and thus from classes under the Repository project? I am using 3differents transactions in my function finish() of MyNewUserWizard: one for storing properties in my node function, one in my node link and another one for my node person, is it not good? If I create a class in Repository can I call it from my jsp page?

When should I use or not transaction?

Thanks for help

derek

You can use the transactions wherever you need them. You shouldn't decide whether or not put a transaction around some code - if it performs multiple operations as part of a business process, then it should get a transaction. They will just propogate. Usually, you would have a single transaction for everything in the finish() method. You can have 3 nested transactions within that, but if you have 3 completely separate transactions, then if the 3rd fails, the others will still have been committed. That can't be right. Perhaps you could post your finish() code.

Mmm. I think you need to post the method here - otherwise it is going to be difficult to know what is going on.

Somehow, giving admin rights on the root to whatever user logs in doesn't seem like a good idea. But post the code and we'll see.

Regards

soeursourire

Thanks a lot for your answer… In my function finish() I was using 3 different transactions because I was getting into troubles while using a single one… Maybe I should do like you said one single transactions including 3others transactions… here is the code of my function finish():

public String finish()
   {
      String outcome = FINISH_OUTCOME;

      //****************************************************************
      // TODO: implement create new Person object from specified details
      //****************************************************************

      UserTransaction tx = null;

      try
      {
         FacesContext context = FacesContext.getCurrentInstance();
         tx = Repository.getUserTransaction(context);
         tx.begin();

         if (this.getEditMode())
         {
            // update the existing node in the repository
            NodeRef nodeRef = this.getPerson().getNodeRef();

            Map<QName, Serializable> props = this.nodeService.getProperties(nodeRef);
            props.put(EF_ContentModel.PROP_USERNAME, this.getUserName());
            props.put(EF_ContentModel.PROP_FIRSTNAME, this.getFirstName());
            props.put(EF_ContentModel.PROP_LASTNAME, this.getLastName());

            // calculate whether we need to move the old home space or create new
            NodeRef newHomeFolderRef;
            NodeRef oldHomeFolderRef = (NodeRef)this.nodeService.getProperty(nodeRef, EF_ContentModel.PROP_HOMEFOLDER);
            boolean moveHomeSpace = false;
            boolean renameHomeSpace = false;
            if (oldHomeFolderRef != null && this.nodeService.exists(oldHomeFolderRef) == true)
            {
               // the original home folder ref exists so may need moving if it has been changed
               ChildAssociationRef childAssocRef = this.nodeService.getPrimaryParent(oldHomeFolderRef);
               NodeRef currentHomeSpaceLocation = childAssocRef.getParentRef();
               if (this.getHomeSpaceName().length() != 0)
               {
                  if (currentHomeSpaceLocation.equals(this.getHomeSpaceLocation()) == false &&
                      oldHomeFolderRef.equals(this.getHomeSpaceLocation()) == false &&
                      currentHomeSpaceLocation.equals(getCompanyHomeSpace()) == false)
                  {
                     moveHomeSpace = true;
                  }

                  String oldHomeSpaceName = Repository.getNameForNode(nodeService, oldHomeFolderRef);
                  if (oldHomeSpaceName.equals(this.getHomeSpaceName()) == false &&
                      oldHomeFolderRef.equals(this.getHomeSpaceLocation()) == false)
                  {
                     renameHomeSpace = true;
                  }
               }
            }

            if (logger.isDebugEnabled())
               logger.debug("Moving space: " + moveHomeSpace + " and renaming space: " + renameHomeSpace);

            if (moveHomeSpace == false && renameHomeSpace == false)
            {
               if (this.getHomeSpaceLocation() != null && this.getHomeSpaceName().length() != 0)
               {
                  newHomeFolderRef = createHomeSpace(this.getHomeSpaceLocation().getId(), this.getHomeSpaceName(), false);
               }
               else if (this.getHomeSpaceLocation() != null)
               {
                  // location selected but no home space name entered,
                  // so the home ref should be set to the newly selected space
                  newHomeFolderRef = this.getHomeSpaceLocation();

                  // set the permissions for this space so the user can access it

               }
               else
               {
                  // nothing selected - use Company Home by default
                  newHomeFolderRef = getCompanyHomeSpace();
               }
            }
            else
            {
               // either move, rename or both required
               if (moveHomeSpace == true)
               {
                  this.nodeService.moveNode(
                        oldHomeFolderRef,
                        this.getHomeSpaceLocation(),
                        EF_ContentModel.ASSOC_CONTAINS,
                        this.nodeService.getPrimaryParent(oldHomeFolderRef).getQName());
               }
               newHomeFolderRef = oldHomeFolderRef;   // ref ID doesn't change

               if (renameHomeSpace == true)
               {
                  // change HomeSpace node name
                  this.nodeService.setProperty(newHomeFolderRef, EF_ContentModel.PROP_NAME, this.getHomeSpaceName());
               }
            }

            props.put(EF_ContentModel.PROP_HOMEFOLDER, newHomeFolderRef);
            props.put(EF_ContentModel.PROP_EMAIL, this.getEmail());
            props.put(EF_ContentModel.PROP_ORGID, this.getCompanyId());

            this.nodeService.setProperties(nodeRef, props);

            try {
               BufferedWriter out = new BufferedWriter(new FileWriter("NodeRefEdit.txt"));
                 out.write("—Noderef—\n");
                   out.write("uuid= ");
                   String uuid = nodeRef.getId();
                   out.write(uuid);
                   out.write("\n");
                   out.close();
             } catch (IOException ioe) {
               System.out.println(ioe.toString());
             }

            // TODO: RESET HomeSpace Ref found in top-level navigation bar!
            // NOTE: not need cos only admin can do this?
         }
         else
         {
            if (this.getPassword().equals(this.getConfirm()))
            {
               if (!this.personService.getUserNamesAreCaseSensitive())
               {
                  this.setUserName (this.getUserName().toLowerCase());
               }

               // create properties for Person type from submitted Form data
               Map<QName, Serializable> props = new HashMap<QName, Serializable>(7, 1.0f);
               props.put(EF_ContentModel.PROP_USERNAME, this.getUserName());
               props.put(EF_ContentModel.PROP_FIRSTNAME, this.getFirstName());
               props.put(EF_ContentModel.PROP_LASTNAME, this.getLastName());
               NodeRef homeSpaceNodeRef;
               if (this.getHomeSpaceLocation() != null && this.getHomeSpaceName().length() != 0)
               {
                  // create new
                  homeSpaceNodeRef = createHomeSpace(this.getHomeSpaceLocation().getId(), this.getHomeSpaceName(), true);
               }
               else if (this.getHomeSpaceLocation() != null)
               {
                  // set to existing
                  homeSpaceNodeRef = this.getHomeSpaceLocation();
                  setupHomeSpacePermissions(homeSpaceNodeRef);
               }
               else
               {
                  // default to Company Home
                  homeSpaceNodeRef = getCompanyHomeSpace();
               }
               props.put(EF_ContentModel.PROP_HOMEFOLDER, homeSpaceNodeRef);
               props.put(EF_ContentModel.PROP_EMAIL, this.getEmail());
               props.put(EF_ContentModel.PROP_ORGID, this.getCompanyId());

               // create the node to represent the Person
               String assocName = QName.createValidLocalName(this.getUserName());
               NodeRef newPerson = this.personService.createPerson(props);

               try {
                   BufferedWriter out = new BufferedWriter(new FileWriter("NodeRef.txt"));
                     out.write("—Noderef New person—\n");
                       out.write("uuid= ");
                       String uuid = newPerson.getId();
                       out.write(uuid);
                       out.write("\n");
                    out.close();
                 } catch (IOException ioe) {
                  System.out.println(ioe.toString());
                }

               // ensure the user can access their own Person object
               this.permissionService.setPermission(newPerson, this.getUserName(), this.permissionService.getAllPermission(), true);

               if (logger.isDebugEnabled()) logger.debug("Created Person node for username: " + this.getUserName());

               // create the ACEGI Authentication instance for the new user
               this.authenticationService.createAuthentication(this.getUserName(), this.getPassword().toCharArray());

               if (logger.isDebugEnabled()) logger.debug("Created User Authentication instance for username: " + this.getUserName());
            }
            else
            {
               outcome = null;
               Utils.addErrorMessage(Application.getMessage(context, UsersBean.ERROR_PASSWORD_MATCH));
            }
         }

         // commit the transaction
         tx.commit();

         // reset the richlist component so it rebinds to the users list
         invalidateUserList();
      }
      catch (Exception e)
      {
         // rollback the transaction
         try { if (tx != null) {tx.rollback();} } catch (Exception tex) {}
         Utils.addErrorMessage(MessageFormat.format(Application.getMessage(FacesContext.getCurrentInstance(), ERROR), e
               .getMessage()), e);
         outcome = null;
      }

      //*********************************************************************
      //    TODO: implement create new Function object from specified details
      //*********************************************************************

      UserTransaction txFN = null;

      try
      {
         FacesContext context = FacesContext.getCurrentInstance();
         txFN = Repository.getUserTransaction(context);
         txFN.begin();

         if (this.getEditMode())
         {
            // update the existing node in the repository
            NodeRef nodeRefFN = this.getFunction().getNodeRef();

            Map<QName, Serializable> propsFN = this.nodeService.getProperties(nodeRefFN);
            propsFN.put(EF_ContentModel.PROP_FN_ID, this.functionId);
            propsFN.put(EF_ContentModel.PROP_FN_DIMTRADE, this.fn_trade);

            this.nodeService.setProperties(nodeRefFN, propsFN);

            try {
               BufferedWriter out = new BufferedWriter(new FileWriter("NodeRefFNEdit.txt"));
                   out.write("—NodeRefFN —");
                   String uuid2 = nodeRefFN.getId();
                   out.write(uuid2);
                   out.write("\n");
                out.close();
             } catch (IOException ioe) {
               System.out.println(ioe.toString());
             }
         }
         else   //not edit mode.. creation mode
         {
            if (this.getPassword().equals(this.getConfirm()))
            {
               if (!this.personService.getUserNamesAreCaseSensitive())
               {
                  this.setUserName (this.getUserName().toLowerCase());
               }

               // Create the node to represent the function

               Map<QName, Serializable> propsFN = new HashMap<QName, Serializable>(2);
               propsFN.put(EFContentModel.PROP_FN_ID, this.functionId);
               NodeRef newFunction = this.getFunctionService().createFunction(propsFN);

               this.functionId = newFunction.getId();
               propsFN.put(EF_ContentModel.PROP_FN_ID, this.functionId);
               propsFN.put(EF_ContentModel.PROP_FN_DIMTRADE, this.fn_trade);
               String assocNameFN = QName.createValidLocalName(this.functionId);

               this.nodeService.setProperties(newFunction,propsFN);

            }
            else
            {
               outcome = null;
               Utils.addErrorMessage(Application.getMessage(context, UsersBean.ERROR_PASSWORD_MATCH));
            }
         }

         // commit the transaction
         txFN.commit();

         // reset the richlist component so it rebinds to the users list
         invalidateUserList();
      }
      catch (Exception e)
      {
         // rollback the transaction
         try { if (txFN != null) {txFN.rollback();} } catch (Exception tex) {}
         Utils.addErrorMessage(MessageFormat.format(Application.getMessage(FacesContext.getCurrentInstance(), ERROR), e
               .getMessage()), e);
         outcome = null;
      }

//    *********************************************************************
      //    TODO: implement create new LinkFunctionPerson object from specified details
      //*********************************************************************

      UserTransaction txLINK = null;

      try
      {
         FacesContext context = FacesContext.getCurrentInstance();
         txLINK = Repository.getUserTransaction(context);
         txLINK.begin();

         if (this.getEditMode())
         {
            // update the existing node in the repository
            NodeRef nodeRefLINK = this.getLink().getNodeRef();

            Map<QName, Serializable> propsLINK = this.nodeService.getProperties(nodeRefLINK);
            propsLINK.put(EF_ContentModel.PROP_LINK_ID, this.linkId);
            propsLINK.put(EF_ContentModel.PROP_LINK_USERNAME, this.getUserName());
            propsLINK.put(EF_ContentModel.PROP_LINK_FUNCTIONID, this.getFunctionId());

            this.nodeService.setProperties(nodeRefLINK, propsLINK);

            try {
               BufferedWriter out = new BufferedWriter(new FileWriter("NodeRefLINKEdit.txt"));
                   out.write("—NodeRefLINK —");
                   String uuid2 = nodeRefLINK.getId();
                   out.write(uuid2);
                   out.write("\n");
                out.close();
             } catch (IOException ioe) {
               System.out.println(ioe.toString());
             }
         }
         else   //not edit mode.. creation mode
         {
            if (this.getPassword().equals(this.getConfirm()))
            {
               if (!this.personService.getUserNamesAreCaseSensitive())
               {
                  this.setUserName (this.getUserName().toLowerCase());
               }

               // Create the node to represent the function
               //linkId++;   //prendre le uuid du noeud!

               Map<QName, Serializable> propsLINK = new HashMap<QName, Serializable>(10);
               propsLINK.put(EF_ContentModel.PROP_LINK_ID, this.linkId);

               NodeRef newLink = this.linkService.createLinkFunctionPerson(propsLINK);

               this.linkId = newLink.getId();
               // choose that the id of the link will be equal to the node uuid
               propsLINK.put(EF_ContentModel.PROP_LINK_ID, this.linkId);
               propsLINK.put(EF_ContentModel.PROP_LINK_USERNAME, this.getUserName());
               propsLINK.put(EF_ContentModel.PROP_LINK_FUNCTIONID, this.getFunctionId());
               String assocNameLINK = QName.createValidLocalName(this.linkId);
               this.nodeService.setProperties(newLink, propsLINK);

               try {
                   BufferedWriter out = new BufferedWriter(new FileWriter("NodeRefLINK.txt"));
                       out.write("—NodeRefLINK NewFunction—");
                       String uuid2 = newLink.getId();
                       out.write(uuid2);
                       out.write("\n");
                       out.write("—FunctionId—");
                       String uuid = this.getFunctionId();
                       out.write(uuid);
                       out.write("\n");
                    out.close();
                 } catch (IOException ioe) {
                   System.out.println(ioe.toString());
               }

            }
            else
            {
               outcome = null;
               Utils.addErrorMessage(Application.getMessage(context, UsersBean.ERROR_PASSWORD_MATCH));
            }
         }

         // commit the transaction
         txLINK.commit();

         // reset the richlist component so it rebinds to the users list
         invalidateUserList();
      }
      catch (Exception e)
      {
         // rollback the transaction
         try { if (txLINK != null) {txLINK.rollback();} } catch (Exception tex) {}
         Utils.addErrorMessage(MessageFormat.format(Application.getMessage(FacesContext.getCurrentInstance(), ERROR), e
               .getMessage()), e);
         outcome = null;
      }


      return outcome;
   }

Also for my problem of permission, I created a class on WebClient side in order to display all person who has a trade < to the trade of the connected user but I get into troubles to access the root node. Here is my code:

public List<Node> getSubPersons()
   {
      List<NodeRef> personNodesRef = null;
      List<Node> personNodes = new ArrayList<Node>();

     String connectedUsername = this.getAuthenticationService().getCurrentUserName();

      if(connectedUsername.compareTo("admin")==0)
      {
             personNodes = Repository.getUsers(FacesContext.getCurrentInstance(), this.getNodeService(),
                         this.getSearchService());
       }
       else
       {
            UserTransaction tx = null;
            try
            {
               tx = Repository.getUserTransaction(FacesContext.getCurrentInstance(), true);
               tx.begin();

              FacesContext context = FacesContext.getCurrentInstance();
              EF_LinksFunctionPersonBeanService linksFunctionPersonBeanService = (EF_LinksFunctionPersonBeanService)FacesContextUtils.getRequiredWebApplicationContext(context).getBean("linksFunctionPersonBeanService");
              EF_FunctionsBeanService functionsBeanService = (EF_FunctionsBeanService)FacesContextUtils.getRequiredWebApplicationContext(context).getBean("functionsBeanService");

                //get functionIds of the functions that the connected user has
               List<SelectItem> functionIds = linksFunctionPersonBeanService.getFunctionIdsWithUsername(connectedUsername);
              //get higher function properties levels between these functions (with functionId)
              int higherTradeLevel = functionsBeanService.getHigherTradeLevelFrom(functionIds);
              //get the functionIds of the person that have lower level for all their function properties
      List<SelectItem> personFunctionIds = functionsBeanService.getSubPersonFunctionIds(higherTradeLevel);

             //get all usernames linked to these functionIds
      List<SelectItem> usernames = linksFunctionPersonBeanService.getUsernamesFrom(personFunctionIds);

          //change the permission of the nodeService for the username ???
         //this.permissionService.setPermission(nodeService.getRootNode(Repository.getStoreRef()), connectedUsername, this.permissionService.getAllPermission(), true);

      MethodSecurityInterceptor nodeSecurity = (MethodSecurityInterceptor)FacesContextUtils.getRequiredWebApplicationContext(context).getBean("NodeService_security");
      NodeRef rootNodeRef = this.getNodeService().getRootNode(Repository.getStoreRef()); //PROBLEM HERE

      for(SelectItem username : usernames)
           {
                  //definition of "username" conversion into ef variable
                  QueryParameterDefinition[] defs = new QueryParameterDefinition[1];
                  DataTypeDefinition typeText = this.getDictionaryService().getDataType(DataTypeDefinition.TEXT);
                  defs[0] = new QueryParameterDefImpl(QName.createQName("ef", "var", this.getNamespacePrefixResolver()), typeText, true,
                       username.getLabel());

                  //all node Link that have a link_functionId = fnId.getLabel()
                  //should be only one node! 1 id only for 1 function to do that choose only the first node found
                  personNodesRef = this.getSearchService().selectNodes(rootNodeRef, PEOPLE_FOLDER
                       + "/ef:EF_person[@cm:userName = $ef:var]", defs, this.getNamespacePrefixResolver(), false);

                  //redundancy removed here
                  MapNode node = new MapNode(personNodesRef.get(0));
                 personNodes.add(node);
           }

           // commit the transaction
            tx.commit();

         }
         catch (InvalidNodeRefException refErr)
         {
            Utils.addErrorMessage(MessageFormat.format(Application.getMessage(
                  FacesContext.getCurrentInstance(), Repository.ERROR_NODEREF), new Object[] {"root"}) );
            personNodes = Collections.<Node>emptyList();
            try { if (tx != null) {tx.rollback();} } catch (Exception tex) {}
         }
         catch (Exception err)
         {
            Utils.addErrorMessage(MessageFormat.format(Application.getMessage(
                  FacesContext.getCurrentInstance(), Repository.ERROR_GENERIC), err.getMessage()), err );
            personNodes = Collections.<Node>emptyList();
            try { if (tx != null) {tx.rollback();} } catch (Exception tex) {}
         }
       }

      return personNodes;
   }