Hi,
It seems we can have supported-modes option with portal-objects.xml. As per document if supported-modes is not declared, by default it uses view,edit,help.

The question I have is if a portle.xml has declared a porlet which supports VIEW, EDIT and HELP capability, can the portal-object.xml override one of these option by using supported-modes option.

I want to hide the edit option so that users cannot change the preferences.

portlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd /opt/SUNWps/dtd/portlet.xsd"
 version="1.0">
 <portlet>
 <portlet-name>MyPortlet</portlet-name>
 <portlet-class>org.jboss.portlet.hello.MyPortlet</portlet-class>
 <supports>
 <mime-type>text/html</mime-type>
 <portlet-mode>VIEW</portlet-mode>
 <portlet-mode>EDIT</portlet-mode>
 <portlet-mode>HELP</portlet-mode>
 </supports>
 <portlet-info>
 <title>MyPortlet</title>
 </portlet-info>
 </portlet>
</portlet-app>

<?xml version="1.0" encoding="UTF-8"?>
<deployments>
 <deployment>
 <parent-ref/>
 <if-exists>overwrite</if-exists>
 <portal>
 <portal-name>HelloPortal</portal-name>
 <properties>
 <!-- Set the layout for the default portal -->
 <!-- see also portal-layouts.xml -->
 <property>
 <name>layout.id</name>
 <value>generic</value>
 </property>
 <!-- Set the theme for the default portal -->
 <!-- see also portal-themes.xml -->
 <property>
 <name>theme.id</name>
 <value>Nphalanx</value>
 </property>
 <!-- set the default render set name (used by the render tag in layouts) -->
 <!-- see also portal-renderSet.xml -->
 <property>
 <name>theme.renderSetId</name>
 <value>divRenderer</value>
 </property>
 <!-- set the default strategy name (used by the strategy interceptor) -->
 <!-- see also portal-strategies.xml -->
 <property>
 <name>layout.strategyId</name>
 <value>maximizedRegion</value>
 </property>
 </properties>
 <supported-modes>
 <mode>view</mode>
 <mode>view</mode>
 <mode>help</mode>
 </supported-modes>
 <supported-window-states>
 <window-state>normal</window-state>
 <window-state>minimized</window-state>
 <window-state>maximized</window-state>
 </supported-window-states>
 <security-constraint>
 <policy-permission>
 <role-name>User</role-name>
 <action-name>viewrecursive</action-name>
 </policy-permission>
 <policy-permission>
 <role-name>Admin</role-name>
 <action-name>viewrecursive</action-name>
 </policy-permission>
 </security-constraint>
 <page>
 <page-name>default</page-name>
 <properties/>
 <window>
 <window-name>MyPortletWindow</window-name>
 <instance-ref>MyPortletInstance</instance-ref>
 <region>center</region>
 <height>0</height>
 </window>
 </page>
 </portal>
 </deployment>
</deployments>