Hi,

I would appreciate any advice regarding the following issue.

We are using Webworks +Hibernate (2.1.4) with MySQL (4.1)

I am getting a NULL POINTER Exception while trying to do getSession(classname, id).

Thanks,
MK

==============================================
Here are my Database Schema to save this search criterias:
==============================================

SavedSearchMaster
-----------------
SS_Id Int NOT NULL AUTO_INCREMENT, PRIMARY KEY
SavedSearch_Name Varchar(60)
User_Id Int Foreign Key
Created_Date Date
Updated_Date Date


UserTable
---------
User_Id Int (PK)
Username Varchar(40)


Relation between UserTable --------------> SavedSearchMaster
(one) (Many)

==============================================
Hibernate Mapping files
==============================================

UserTable.hbm.xml
------------------

<hibernate-mapping>
<class
name="com.heartbeat.profiler.model.UserTable"
table="user_table"
>
<id
name="userId"
type="java.lang.Integer"
column="User_Id"
>
<generator class="native" />
</id>

<property
name="username"
type="java.lang.String"
column="Username"
length="50"
/>

<set name="savedSearchMaster" table="SAVEDSEARCH_MASTER" inverse="true" lazy="true">
<key column="user_id"/>
<one-to-many class="com.heartbeat.profiler.model.SavedSearchMaster"/>
</set>

</class>
</hibernate-mapping>

SavedSearchMaster.hbm.xml
-------------------------

<hibernate-mapping>
<class
name="com.heartbeat.profiler.model.SavedSearchMaster"
table="SavedSearch_Master"
>

<id
name="ssId"
type="java.lang.Integer"
column="SS_Id"
>
<generator class="native" />
</id>

<property
name="savedSearchName"
type="java.lang.String"
column="SavedSearch_Name"
length="60"
/>

<property
name="userId"
type="java.lang.Integer"
column="User_Id"
/>

<property
name="createdDate"
type="java.sql.Date"
column="Created_Date"
/>

<property
name="updatedDate"
type="java.sql.Date"
column="Updated_Date"
/>

<!-- associations -->
<many-to-one name="userTable" column="user_id" class="com.heartbeat.profiler.model.UserTable"/>

</class>
</hibernate-mapping>

==============================================
in Action class
==============================================

// Get searchBean from session
searchBean = (SearchBean)get("searchBean");
// Get userId from session
userId = (Integer)get("userId");

NULL ==> userTable = (UserTable) getSession().get(UserTable.class, userId);

set("userTable", userTable);
set("savedSearchMaster", savedSearchMaster);

savedSearchMaster.setSavedSearchName(searchBean.getSearchName());
savedSearchMaster.setUserTable(userTable);
getSession().save(savedSearchMaster);
getSession().flush();

==============================================
ERROR I AM GETTING IS
==============================================
java.lang.NullPointerException
at com.heartbeat.profiler.action.AbstractAction.getSession(AbstractAction.java:70)
at com.heartbeat.profiler.action.SavedSearchDelegateAction.go(SavedSearchDelegateAction.java:55)
at com.heartbeat.profiler.action.AbstractAction.execute(AbstractAction.java:51)
at com.heartbeat.profiler.action.SavedSearchAction.go(SavedSearchAction.java:63)
at com.heartbeat.profiler.action.AbstractAction.execute(AbstractAction.java:51)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.heartbeat.profiler.interceptor.HibernateInterceptor.intercept(HibernateInterceptor.java:32)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.heartbeat.profiler.interceptor.AuthorizeInterceptor.intercept(AuthorizeInterceptor.java:65)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)