POF & Invokable

Question

Hi,
I am trying to make all invokable objects in my application POF. However when I call                
Map mapQuery = service.query(task, setMembers);
the remote node is getting exceptions. What it looks like is that the client making the call is not sending the invokable object in POF. in fact, I did verify that my writeExernal(PofWriter out) is not getting called. I noticed that the Invokable interface implements Serializable. Is that causing an issue?? The remote node is trying to read in in POF. So my initial question is, should invocation be able to do POF? If so, any ideas as to why this is not working. Here is the stack trace from the remote node.
2008-09-16 09:43:20.275 Oracle Coherence GE 3.4/403 Release Candidate 3 <Error> (thread=Invocation:InvocationService, member=1): Terminating InvocationService due to unhandled exception: java.lang.IllegalStateException
2008-09-16 09:43:20.275 Oracle Coherence GE 3.4/403 Release Candidate 3 <Error> (thread=Invocation:InvocationService, member=1):
java.lang.IllegalStateException: type=-7349
at com.tangosol.io.pof.PofHelper.skipUniformValue(PofHelper.java:1146)
at com.tangosol.io.pof.PofHelper.skipValue(PofHelper.java:938)
at com.tangosol.io.pof.PofBufferReader$UserTypeReader.readRemainder(PofBufferReader.java:3510)
at com.tangosol.io.pof.PortableObjectSerializer.initialize(PortableObjectSerializer.java:156)
at com.tangosol.io.pof.PortableObjectSerializer.deserialize(PortableObjectSerializer.java:128)
at com.tangosol.io.pof.PofBufferReader.readAsObject(PofBufferReader.java:3284)
at com.tangosol.io.pof.PofBufferReader.readObject(PofBufferReader.java:2599)
at com.tangosol.io.pof.ConfigurablePofContext.deserialize(ConfigurablePofContext.java:348)
at com.tangosol.coherence.component.util.daemon.queueProcessor.Service.readObject(Service.CDB:4)
at com.tangosol.coherence.component.net.Message.readObject(Message.CDB:1)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.InvocationService$InvocationRequest.read(InvocationService.CDB:8)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onNotify(Grid.CDB:117)
at com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:37)
at java.lang.Thread.run(Thread.java:619)
2008-09-16 09:43:20.276 Oracle Coherence GE 3.4/403 Release Candidate 3 <D5> (thread=Invocation:InvocationService, member=1): Service InvocationService left the cluster
2008-09-16 09:43:24.603 Oracle Coherence GE 3.4/403 Release Candidate 3 <Info> (thread=main, member=1): Restarting Service: InvocationService
2008-09-16 09:43:24.621 Oracle Coherence GE 3.4/403 Release Candidate 3 <D5> (thread=Invocation:InvocationService, member=1): Service InvocationService joined the cluster with senior service member 2

Answer 1

Here it is.
import java.io.IOException;
import com.tangosol.io.pof.EvolvablePortableObject;
import com.tangosol.io.pof.PofReader;
import com.tangosol.io.pof.PofWriter;
import com.tangosol.net.AbstractInvocable;
import com.tangosol.util.Binary;
* A runnable task used to report information about a cluster node's VM.
* @author erm 2003.09.12
* @author jh 2004.10.06
* @see AbstractInvocable
* @version 2.5
public class ReportTask extends AbstractInvocable implements
          EvolvablePortableObject {
     static final long serialVersionUID = -7945927591486291724L;
     Object result;
     // Evolvable members
     private int version;
     private Binary binaryData;
     public ReportTask() {
     // ----- Invocable interface ----------------------------------------------
      * Called exactly once by the InvocationService to invoke this Invocable
      * object.
     public void run() {
          System.out.println("IN REPORT TASK INVOKED with POF");
          // get runtime stats, including free and total VM memory
          Runtime runtime = Runtime.getRuntime();
          long free = runtime.freeMemory();
          long total = runtime.totalMemory();
          NodeInfo nodeInfo = new NodeInfo(free, total);
          // set the result of the invocation
          setResult(nodeInfo);
     public int getDataVersion() {
          return version;
     public void setDataVersion(int nVersion) {
          version = nVersion;
     public Binary getFutureData() {
          return binaryData;
     public void setFutureData(Binary binFuture) {
          binaryData = binFuture;
     public int getImplVersion() {
          return 1;
     public void writeExternal(PofWriter out) throws IOException {
          System.out.println("IN WRITEEXTERNAL.. REPORTTASK");
     public void readExternal(PofReader in) throws IOException {
          System.out.println("IN READEXTERNAL.. REPORTTASK");
}