Portlet calling/invoking another portlet?

Question

Hi,
I have portal server 6 2004q2 running and on my page I have 3 columns, thin, thick,thin. Basically 3 portlets/channels. The most right of the portlet contains link and when i click on any link, the middle portlet would refresh and load a new page. Is this possible?
Is there a sample code for this?
Q2. If I have a series of complex output, could I preload those portlets and hide them, and when I click on the link (via the right most portlet), the middle portlet minimises/dissapear and the correct portlet will appear in the center?
Is this possible? Is there a sample code for this?
Please help - newbie.

Answer 1

Hi,
I don't think you can pass a parameter to the URLScraper provider like this. What you could do is, extend the JSPProvider provider
Eg.
public class MyJSPProvider extends JSPProvider {
public URL processEdit(HttpServletRequest request, HttpServletResponse response) throws ProviderException
String path = request.getParameter("path");
setClientProperty("path", path);
return getMaximiseURL(request);
public URL getMaximizeURL(HttpServletRequest request, String providerName) throws MalformedURLException {
String container = request.getParameter("lgo.parent.container");
if (container == null) {
throw new MalformedURLException("Failed to get the parent container.");
String url = "action=process&provider=" + container + "&" + container +
".channelAction=truemaximize&" + container + ".targetProvider=" + providerName;
return new URL(this.getProviderContext().getDesktopURL(request, url, false));
This is just a sample and I haven't compiled or tested this. You need to copy the class files to /etc/opt/SUNWps/desktop/classes directory and add the provider definition to display profile.
Eg.
<DisplayProfile priority="0" version="1.0">
<Properties/>
<Channels>
</Channels>
<Provider class="MyJSPProvider" name="newJSPProvider">
<Properties>
<String name="title" value=""/>
<String name="description" value=""/>
<String name="contentPage" value="/newJSPProvider/main.jsp"/>
<String name="editPage" value=""/>
<String name="processPage" value=""/>
<String name="width" value="thick"/>
<Boolean name="isEditable" value="true"/>
<String name="editType" value="edit_subset"/>
<Boolean name="showExceptions" value="true"/>
<String advanced="true" name="refreshTime" value="0"/>
<Collection name="CustomTheme">
</Collection>
</Properties>
</Provider>
</DisplayProfile>
This will now enable you to create new channels using this provider.
In your jsp file you could something like this.
<%
com.sun.portal.providers.jsp.JSPProvider provider = (com.sun.portal.providers.jsp.JSPProvider) request.getAttribute("com.sun.portal.providers.jsp.JSPProvider");
String path= provider.getClientProperty("path");
if (pageName == null || pageName.trim().length() == 0)
path = "defaultpage.html";
%>
<jsp:include page="<%=pageName%>" flush="true"/>
URL to access channel would be something like
http://test.mydomain.com.my/portal/dt?action=process&lgo.parent.container=<your_parent_container>&provider=MyJSPProvider&path=/interface02/References.htm
Let me know if you still have problems.
Regards,
Damitha