Copyright 2004 The Apache Software Foundation 
 
Licensed under the Apache License, Version 2.0 (the "License"); 
you may not use this file except in compliance with the License. 
You may obtain a copy of the License at 
 
    http://www.apache.org/licenses/LICENSE-2.0 
 
Unless required by applicable law or agreed to in writing, software 
distributed under the License is distributed on an "AS IS" BASIS, 
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
See the License for the specific language governing permissions and 
limitations under the License. 
 
Entity 
( 
    entityid 
 
 
-------------------------------------- 
  Portlet Preference Lookup Algorithm 
-------------------------------------- 
 
(a) Look for authenticated principal's PortletPreference for the given entity 
if Found  
    Return PortletPreference 
End if 
 
(b) Look for PortletPreference for this entity window, not associated to a principal 
if Found 
    Return PortletPreference 
End 
 
(c) Look for default PortletPreference for the portlet 
if Found 
    Return default PortletPreference 
End 
 
Return Not Found 
 
 
----------------------------- 
  Model 
----------------------------- 
 
Page 1 has  
 
Portlet-1, entity id = 51 
Portlet-2, entity id = 52 
Portlet-3, entity id = 53 
Portlet-1, entity id = 54 
 
Username = David 
 
RELATIONSHIPS 
 
(a) Stored in PREF_NODE table with NODE_NAME =  
   for entity 51:  /user/David/portletprefs/51 
              52:  /user/David/portletprefs/52 
              53:  /user/David/portletprefs/53 
              54:  /user/David/portletprefs/54 
 
(b) Considering window 51, the pref doesn't exist for user David, 
    Stored in PREF_NODE table with NODE_NAME =  
   for entity 51:  /System/Jetspeed/entities/51 
 
(c) fallback to Portlet Registry 
 
 
----------------------------- 
  Associations 
----------------------------- 
 
TABLE ENTITY_WINDOW_ASSOC 
( 
    ENTITY_ID INTEGER REFERENCES ENTITY, 
    WINDOW_ID INTEGER REFERENCES FRAGMENT 
) 
 
TABLE ENTITY_PREF_ASSOC 
( 
    ENTITY_ID INTEGER REFERENCES ENTITY, 
    PREFS_NODE INTEGER REFERENCES PREFS_NODE 
)