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From Matthew Goodson <matt...@spidertracks.co.nz>
Subject Serialization error
Date Tue, 30 Aug 2011 05:06:57 GMT
Hi guys, I'm getting the error below when I try to serialize a page that
contains my 'Plan' object.
My 'plan' object extends my 'UuidEntity' object which is shown below.
UUID is a time based id and the source is fromhttp://
stephenc.github.com/eaio-uuid
Both 'Plan' and 'UUID' implement Serializable.
Does anyone know why I would be getting this?
Thanks!


@MappedSuperclass
public abstract class UuidEntity extends Persistable<UUID> {
private static final long serialVersionUID = 1L;

@Id
private UUID id;

public UUID getId() {
return id;
}

protected void setId(UUID id){
this.id = id;
}

@Override
public UUID getKey() {
return id;
}

@PrePersist
public void genId() {
if (id == null) {
id = new UUID();
}
}
}

2011-08-30 04:52:13,705Z ERROR [1906419187@qtp-1568368195-4]  Exception when
detaching/serializing page
java.lang.IllegalAccessError: tried to access field
com.spidertracks.aviator.model.UuidEntity.id from class
com.spidertracks.aviator.model.billing.Plan
at com.spidertracks.aviator.model.billing.Plan.writeExternal(Plan.java)
at
java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1429)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1398)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at
java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:422)
at org.apache.wicket.Component.writeObject(Component.java:4700)
at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
at
org.apache.wicket.util.io.IObjectStreamFactory$DefaultObjectStreamFactory$2.writeObjectOverride(IObjectStreamFactory.java:121)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at org.apache.wicket.util.lang.Objects.objectToByteArray(Objects.java:1124)
at
org.apache.wicket.protocol.http.pagestore.AbstractPageStore.serializePage(AbstractPageStore.java:203)
at
org.apache.wicket.protocol.http.pagestore.DiskPageStore.storePage(DiskPageStore.java:840)
at
org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.put(SecondLevelCacheSessionStore.java:332)
at org.apache.wicket.Session.requestDetached(Session.java:1435)
at org.apache.wicket.RequestCycle.detach(RequestCycle.java:1176)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1462)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:319)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
at
org.mortbay.jetty.security.SslSocketConnector$SslConnection.run(SslSocketConnector.java:680)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

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