Create an ADF Tree Using a Mix of VO and Pojo?

I am able to create a basic tree in ADF, VO1 -> VO2 -> VO3 connected by view links.
Now I would like show some additional information that is not available in VO2, and the information cannot be selected directly from tables, and have to come from making Java API calls.
What I am wondering is if its possible to create a Java class returning the information I want, and reuse the other VOs in a tree VO1 -> bean -> VO3. I do not see how the relationships can be defined between them for it to appear in the Tree Level Rules.
An alternative perhaps is to create a single Java class returning the entire tree, and within the Java class fetch rows from the VOs.
Any suggestions?
Edited by: 967776 on Oct 25, 2012 5:07 PM

Another approach would be to use a programatic VO to access the Java API data - http://docs.oracle.com/cd/E26098_01/web.1112/e16182/bcadvvo.htm#sm0341

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===============================
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[http://www.oracle.com/technetwork/developer-tools/adf/learnmore/index-101235.html#CodeCornerSamples]
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     at javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:645)
     at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:568)
     at oracle.adf.view.faces.webapp.UIXComponentTag.doEndTag(UIXComponentTag.java:100)
     at MySiteMapjspx._jspService(_MySiteMap_jspx.java:443)
     at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:462)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
     at com.evermind.server.http.ServletRequestDispatcher.unprivileged_forward(ServletRequestDispatcher.java:287)
     at com.evermind.server.http.ServletRequestDispatcher.access$100(ServletRequestDispatcher.java:51)
     at com.evermind.server.http.ServletRequestDispatcher$2.oc4jRun(ServletRequestDispatcher.java:193)
     at oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java:283)
     at com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:198)
     at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:346)
     at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:152)
     at oracle.adfinternal.view.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:157)
     at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:107)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
     at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:228)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:197)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:123)
     at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:103)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:162)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:122)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:111)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)

debabratas wrote:
Therefore my question is how can I have ps_filename like 'A%' in C?Hello, why don't you just substring on the first character, and if that's an 'A', then LIKE 'A%' will also hold.
For example, in Pro*C:
if (substr(ps_filename,1,1) == 'A') {
..

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I've been trying to create a recursive tree using java in Web Dynpro.
Can you please suggest a good example to try with?

Hi,
Check the below links....
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wd%20tutorials/integration%20of%20a%20tree%20structure%20in%20a%20web%20dynpro%20table.pdf
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wd%20tutorials/constructing%20a%20recursive%20and%20loadable%20web%20dynpro%20tree.pdf
http://help.sap.com/saphelp_nw70/helpdata/en/13/4cde139306304480e89d815ffcf891/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/en/af/44ea406c9d3d43e10000000a155106/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/en/21/ad884118aa1709e10000000a155106/frameset.htm
Code Example,
http://help.sap.com/saphelp_nw70/helpdata/en/16/1ec1814e566f4baf943c53ccf48552/frameset.htm
null

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Hello,
When I want to create an adf tree, the key attribute is shown in the tree by default. Is there any way not to show the key attribute in adf tree?
thanks in advance

User, please tell us your jdev version!
Select the component which renders the key and set is visible property to false. You can also try to set the container the key is in to false.
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