Hi Folks,

one more thing to add.

I want to cache Answer object which is structured as above but I need that to be serializable since for front-end their system won't work if objects are n't serizable.

My question is can I make this class as seriazable and still use Tree Cache AOP. If I retrieve it from Tree Cache AOP and wrap it in other serizable object (DTO), pass DTO to client it's giving me above exception..


What would be work around this probelm, how can I send cached object to remote client as result of getMeFromCache() delegate call.

please reply me ASAP..

Thanks alot,
Anu

Hi Ben,

Thanks for your reply, if I make Answer as non-serializable I need some of way of sending Answer contents in Serialized object. I don't have any control over client whatsoever, they are using TeamBridge(no Idea what it is) but it's main requirement is they need serialized object what would be best way to transport Answer Object. Moreover Answer object is very low level filed I have whole object structured as follows

Object A will have list of Object B, Object B will have Object C and list of ObjectD, Object D have list of Object E, Object E have list of ObjectF and Object F have list of Object G (ANSWER Object). Each object have nearly 10 fields intit(String, int, ArrayList, boolean types), I need to cache ObjectA whch is heavy weighted.

When client calls server through delegate they need Object A to pain the screen(this is the requirement), so how can I transport Object A(this is my ultimate task) which is cached to client.

I really need your expertise help on this, I really appreciate your response.

Thanks alot,
Anu

hi Ben,

Thanks alot for your response, my question would be if we n't able to transport PoJo cached object how people are working around that. So if am n't wrong, we need to use PoJo when we need to use cached objects in middleware only.

I really want to take pros of PoJO cache, if that is the case I need to go for deep copy. Please let me know if there is inproper way (which takes processing/removeObject())of using PoJo cache as normal Pojo.

I really need to find solution for this ASAP, if there is no promising solution with POJO cache I may switch to TreeCache. since my data is read-only, at startup we will dump whole object so TreeCache will work fine for this I guess.

For mentioned req if I use TreeCache will I have any other known flaws.

Please let me know.

Thanks alot Ben,
I really appreciate ur help.

Anu

Hi Brain,

I been caught up with something else, today I got some breathing time and
I tried that.
I am getting the following exception on client side

log4j:WARN No appenders could be found for logger (org.jboss.security.SecurityAssociation).
log4j:WARN Please initialize the log4j system properly.
java.lang.reflect.UndeclaredThrowableException
 at $Proxy1.returnAnswer(Unknown Source)
 at com.wdpro.commerce.wdw.be.client.delegate.WDWIBCAppDelegate.getAnswer(WDWIBCAppDelegate.java:213)
 at CacheTestClient.main(CacheTestClient.java:11)
Caused by: java.io.IOException: unexpected exception type
 at java.io.ObjectStreamClass.throwMiscException(ObjectStreamClass.java:1353)
 at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:815)
 at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1296)
 at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
 at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
 at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
 at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
 at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
 at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
 at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
 at java.rmi.MarshalledObject.<init>(MarshalledObject.java:92)
 at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:410)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
 at sun.rmi.transport.Transport$1.run(Transport.java:148)
 at java.security.AccessController.doPrivileged(Native Method)
 at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
 at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
 at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
 at java.lang.Thread.run(Thread.java:534)
 at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:247)
 at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)
 at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:133)
 at org.jboss.invocation.jrmp.server.JRMPInvoker_Stub.invoke(Unknown Source)
 at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:119)
 at org.jboss.invocation.InvokerInterceptor.invokeInvoker(InvokerInterceptor.java:227)
 at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:167)
 at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)
 at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:55)
 at org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInterceptor.java:97)
 at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:86)
 ... 3 more
Caused by: java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at org.jboss.cache.aop.collection.CollectionInterceptorUtil.invoke(CollectionInterceptorUtil.java:122)
 at org.jboss.cache.aop.collection.CachedListInterceptor.invoke(CachedListInterceptor.java:125)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
 at AOPClassProxy$0.toArray(AOPClassProxy$0.java)
 at java.util.ArrayList.<init>(ArrayList.java:136)
 at com.wdpro.commerce.common.be.model.template.Answer.writeObject(Answer.java:76)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:809)
 at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1296)
 at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
 at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
 at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
 at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
 at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
 at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
 at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
 at java.rmi.MarshalledObject.<init>(MarshalledObject.java:92)
 at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:410)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
 at sun.rmi.transport.Transport$1.run(Transport.java:148)
 at java.security.AccessController.doPrivileged(Native Method)
 at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
 at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
 at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
 at java.lang.Thread.run(Thread.java:534)
Caused by: org.jboss.cache.aop.AopOperationNotSupportedException: CachedListImpl: List.toArray(a) operation not supported
 at org.jboss.cache.aop.collection.CachedListImpl.toArray(CachedListImpl.java:125)
 ... 36 more

package com.wdpro.commerce.common.be.model.template;

/**
 *
 * @@org.jboss.cache.aop.AopMarker
 */
import java.io.IOException;
import java.util.ArrayList;

import com.wdpro.commerce.common.be.model.BaseIBCModel;

public class Answer extends BaseIBCModel {
 private String itemCode;

 private String description;

 private boolean defaultItem;

 private ArrayList parentItemCodeList;

 // **********************TOGETHER FIELDS,DON'T CHANGE IGNORE THEM
 /**
 * @clientCardinality 1
 * @supplierCardinality 1
 * @link aggregation
 */
 // *******************************************************************



 public Answer() {

 parentItemCodeList = new ArrayList();
 }

 public boolean getDefaultItem() {
 return defaultItem;
 }

 public void setDefaultItem(boolean defaultItem) {
 this.defaultItem = defaultItem;
 }

 public String getDescription() {
 return description;
 }

 public void setDescription(String description) {
 this.description = description;
 }

 public String getItemCode() {
 return itemCode;
 }

 public void setItemCode(String itemCode) {
 this.itemCode = itemCode;
 }

 public ArrayList getParentItemCodeList() {
 return parentItemCodeList;
 }

 public void setParentItemCodeList(ArrayList parentItemCodeList) {
 this.parentItemCodeList = parentItemCodeList;
 }

 public void setParentItemCode(String parentItemCode) {
 parentItemCodeList.add(parentItemCode);
 }

 private void writeObject(java.io.ObjectOutputStream out) throws IOException {
 out.writeObject(itemCode);
 out.writeObject(description);
 out.writeBoolean(defaultItem);
 out.writeObject(new ArrayList(parentItemCodeList));

 }

 private void readObject(java.io.ObjectInputStream in) throws IOException,
 ClassNotFoundException {
 itemCode = (String) in.readObject();
 description = (String) in.readObject();
 defaultItem = in.readBoolean();
 parentItemCodeList = (ArrayList) in.readObject();

 }

}

Hi Brain,

I tried with SP2, seems like it is fixed in that release. I am wondering is SP2 IS A STABLE VERSION TO USE IN PRODUCTION. Please let me know, thanks alot for your responses and are really helpful.


Anupama