jsf 2 - EJB not serialized in Managed Bean -

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my application server websphere application server v8. have session scoped managed bean in have injected ejb (ejb 3.0) using @ejb annotation. ejb stateless.

   @managedbean    @sessionscoped     public class mybean extends basebackingbean implements     serializable {  @ejb private idetails custinfo;

i analyzing session data , noticed notserializableexception

java.io.notserializableexception: com.ejb.ejslocal0sldetailsimpl_081f812d @ java.io.objectoutputstream.writeobject0(objectoutputstream.java:1184) @ java.io.objectoutputstream.defaultwritefields(objectoutputstream.java:1537) @ java.io.objectoutputstream.writeserialdata(objectoutputstream.java:1502) @ java.io.objectoutputstream.writeordinaryobject(objectoutputstream.java:1420) @ java.io.objectoutputstream.writeobject0(objectoutputstream.java:1178) @

now tried mark ejb transient , works fine without throwing notserializableexception exception. 

@ejb private transient idetails custinfo;

is correct implementation or can alternate solution?

i have referred should ejbs instance variables , marked transient in jsf managed beans? mentioned marking ejb transient not required; can wrong?

implemented poc code on v8 both local , remote interfaces, noted following:

a. local interface (ejb not implement serializable)

// initializing ejb in servlet serializabletestejblocal localsrvlt=new serializabletestejb();  //try serialize fileoutputstream objfos = new fileoutputstream("d:\\mytest\\testsrv.txt"); objectoutputstream objopstr = new objectoutputstream(objfos); objopstr.writeobject(localsrvlt);

this resulted in java.io.notserializableexception: com.ibm.test.serializabletestejb @ java.io.objectoutputstream.writeobject0(objectoutputstream.java:.. prevent this, ejb had explicitly implement serializable.

b. remote interface (ejb not implement serializable)

//obtain remote stub.  serializabletestejbremote seremotesrvlt=(serializabletestejbremote)portableremoteobject.narrow(homeobject, serializabletestejbremote.class);  //try serialization fileoutputstream objfos = new fileoutputstream("d:\\mytest\\testsrv.txt"); objectoutputstream objopstr = new objectoutputstream(objfos);  objopstr.writeobject(seremotesrvlt);

the serialization successfully.

conclusion:

the inherent mechanism of remote interface obtain stub or proxy allow client-server communication occurs using proxy pattern. involves marshalling , unmarshalling of data , hence proxy-stub serializable default , hence ejb not need implement serializable interface.

but local interfaces not involve remote ups , stub handlers. ejb initializes similar initializing locally available class, hence serialization not available default. in scenario, either ejb need implement serializable interface or object need declared transient skip serialization.

i declaring variable transient. might websphere specific solution


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