I am getting following error though my IData and other objects are Serializable.

Hibernate version:



2.1

Mapping documents:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping default-cascade="none" default-access="property" auto-import="true">
<class name="com.aa.bb.cc.IData" table="INV" mutable="true"
polymorphism="implicit" dynamic-update="false" dynamic-insert="false" batch-size="1"
select-before-update="false" optimistic-lock="version">
<composite-id name="id" class="com.aa.bb.cc.InvoicePK" unsaved-value="none">
<key-property name="invId" column="INV_ID" type="integer" />
</composite-id>

<component name="shipperId" class="com.logistics.javalib.domain.id.ShipperId">
<property name="shipperId" column="TC_COMPANY_ID"/>
</component>
<component name="tcInvoiceId" class="com.aa.bb.cc.MaxLengthString">
<property name="stringValue" column="INVOICE_ID"/>
</component>
<property column="INVOICE_STATUS" length="5" name="invStatus" type="short"/>
</class>
</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():

Session session1 = OFRDef.openSession ();
ArrayList all = null;
try
{
Object[] vals = new Object[]
{
new Integer (101),
};
List list = session1.find ("from IData d where" +
" d.id.invId = ?",
vals,
new Type[] {Type.INTEGER});
if (list == null)
{
all = new ArrayList (0);
}
else
{
all = new ArrayList (list);
}
}
catch (PersistLayerException ex)
{
ex.printStackTrace();
throw ex;
}
finally
{
session1.close ();
}

Full stack trace of any exception that occurs:

net.sf.hibernate.type.SerializationException: could not deserialize
at com.aa.bb.cc.layer.SessionImpl.find(SessionImpl.java:675)
at webroot.jsp_servlet._aa._bb._cc._jsp.__IDetails._jspService(__IDetails.java:720)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1058)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:401)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:20)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:5451)
at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:780)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3105)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2588)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:213)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:189)
Caused by: net.sf.hibernate.type.SerializationException: could not deserialize
at net.sf.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:197)
at net.sf.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:220)
at net.sf.hibernate.type.SerializableType.fromBytes(SerializableType.java:73)
at net.sf.hibernate.type.SerializableType.get(SerializableType.java:38)
at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:62)
at net.sf.hibernate.type.NullableType.nullSafeGet(NullableType.java:53)
at net.sf.hibernate.type.AbstractType.hydrate(AbstractType.java:66)
at net.sf.hibernate.type.ComponentType.hydrate(ComponentType.java:387)
at net.sf.hibernate.loader.Loader.hydrate(Loader.java:611)
at net.sf.hibernate.loader.Loader.loadFromResultSet(Loader.java:552)
at net.sf.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:511)
at net.sf.hibernate.loader.Loader.getRow(Loader.java:426)
at net.sf.hibernate.loader.Loader.doQuery(Loader.java:209)
at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133)
at net.sf.hibernate.loader.Loader.doList(Loader.java:955)
at net.sf.hibernate.loader.Loader.list(Loader.java:946)
at net.sf.hibernate.hql.QueryTranslator.list(QueryTranslator.java:846)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1543)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1520)
at com.aa.bb.cc.layer.SessionImpl.find(SessionImpl.java:671)
... 12 more
Caused by: java.io.StreamCorruptedException: InputStream does not contain a serialized object
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:844)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:163)
at net.sf.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:189)
... 31 more

Name and version of the database you are using:

Oracle 9i

Debug level Hibernate log excerpt: