How to Access MDS Data in ADF application

Usecase :
       How to store user specific defaults into MDS ?
       How to retrieve user specific defaults from MDS ?
       How to delete user specific defaults from MDS ?

Implementation :

Below blog clearly explains about MDS and installation steps
http://fortunefusionminds.blogspot.com/2013/04/how-to-apply-mds-to-adf-application.html

I will give a quick glance at API to access MDS data in this blog.

How to store user specific defaults into MDS ?

Ans : Below implementation stores the data into MDS in file system or Database.



    public static void saveSearchDefaults(String pSearchName,
                                          ViewObject pViewObject,
                                          ViewRowImpl pViewRow) {
        ViewCriteria vc = pViewObject.createViewCriteria();
        vc.setName(pSearchName);
        ViewCriteriaRow vcRow = vc.createViewCriteriaRow();
        String[] attNames = pViewRow.getAttributeNames();
        for (String s : attNames) {
            Object viewRowAttributeValue = pViewRow.getAttribute(s);
            vcRow.setAttribute(s, viewRowAttributeValue);
        }
        vc.add(vcRow);
        pViewObject.getViewCriteriaManager().putViewCriteria(pSearchName, vc);
        JUSearchBindingCustomizer.createPersonalization(pViewObject, vc);
    }


How to retrieve user specific defaults from MDS ?
Answer : 


  /**
     * Retrieves all the saved search names from MDS for a given
     * Viewobject based on logged in user ID
     * @param pViewObject
     * @return
     */
    public static String[] getAllSavedSearchNames(ViewObject pViewObject) {
        String[] result =
            pViewObject.getViewCriteriaManager().getAllViewCriteriaNames();
        return result;

    }

How to apply User specific defaults to a given Row from MDS ?

Ans:


  /** Get the user specific default row from MDS based on
   *       logged in user ID, Provided view object name and search name
   *   Set the rows retrieved from MDS defaults row to provided row Impl class
     * Applies search preferences for saved search.
     * @param pSearchName
     * @param pViewObject
     * @param pViewRow
     */
    public static void applyUserSpecificDefaults(String pSearchName,
                                             ViewObject pViewObject,
                                             ViewRowImpl pViewRow) {
        ViewCriteria vc =
            pViewObject.getViewCriteriaManager().getViewCriteria(pSearchName);
        ViewCriteriaRow vcRow = (ViewCriteriaRow)vc.get(0);
        String[] attNames = vcRow.getAttributeNames();
        StringBuffer buf = null;
        for (String s : attNames) {
            Object vcRowAttributeValue = vcRow.getAttribute(s);
            if (vcRowAttributeValue != null) {
                pViewRow.setAttribute(s, vcRowAttributeValue);
            }
        }
    }

How to Delete User Specific defaults from MDS
Ans:

  /**
   * Deletes the saved search defaults from MDS based on
   * logged in user, search Name and given VIew Object
   * @param pSearchName
   * @param pViewObject
   */
  public static void deleteUserSpecificDefaultsFromMDS(String pSearchName,
                                            ViewObject pViewObject)
  {
    JUSearchBindingCustomizer.deletePersonalization(pViewObject,
                                                    pSearchName);
    pViewObject.getViewCriteriaManager().removeViewCriteria(pSearchName);
  }