Hibernate vs DAO's

Hi Guys,
I've been using hibernate as the persistence mechanism in an enterprise project for a while now. Originally the datamodel was architected to use a DAO to store (through hibernate) and the BusinessObjects (BO's) would use/update the DO's for persistence.
My question is, given that Hibernate is (almost) database independent, is there any actual need for a DAO layer? It's almost redundant, consistiong of member fields that are to be persisted and no actual persistence logic. AFAIK there will always be a database layer in our system, so needing to abstract the persistence to be anything other than a database is a bit of overkill (although a good Software Engineer always leaves things open for change).
Should the DAO layer exist at all? I can see an argument architectually that you wouldn't want to always rely on hibernate as the persistence mechanism (I don't like to rely exclusively on any 3rd party code, I'd prefer to depend on my own abstraction), and the DAO's provide a relatively easy abstraction for changing the persistence mechanism, but in a hibernate based architecture they really are just "dumb" objects.
Cheers,
Aidos

Hi Guys,
I've been using hibernate as the persistence
mechanism in an enterprise project for a while now.
Originally the datamodel was architected to use a DAO
to store (through hibernate) and the BusinessObjects
(BO's) would use/update the DO's for persistence.
My question is, given that Hibernate is (almost)
database independent, is there any actual need for a
DAO layer? Most emphatically - yes.
It's almost redundant, consistiong of
member fields that are to be persisted and no actual
persistence logic.
AFAIK there will always be a
database layer in our system, so needing to abstract
the persistence to be anything other than a database
is a bit of overkill (although a good Software
Engineer always leaves things open for change).
Should the DAO layer exist at all? I can see an
argument architectually that you wouldn't want to
always rely on hibernate as the persistence mechanism
(I don't like to rely exclusively on any 3rd party
code, I'd prefer to depend on my own abstraction),
and the DAO's provide a relatively easy abstraction
for changing the persistence mechanism, but in a
hibernate based architecture they really are just
"dumb" objects.
Cheers,
AidosHibernate is one way to implement the DAO, but it will remain if you ever switch from Hibernate.
%

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Hibernate Query vs PreparedStatement for SQL

Hi,
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Whether you use Hibernate, ODBC, BDE, or Funky Foo's SQL client library, Oracle does not give a damn.
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Lazy loading differences Toplink vs. Hibernate - plz. explain

I'm in the process of evaluating both Toplink and hibernate as potential ORM framework to use for a project I'm currently involved in.
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I'm not too sure here, but I think it's because TopLink has a "long running" ServerSession. When you do lazy initialization outside a clientsession it is for read only purposes and it will use the centrally managed ServerSession (and cache). I'm still trying to figure out the exact relationships here, som I'm not too sure. :) Hibernate does not have a centrally shared cache, and will not be able to instantiate objects if the session is closed (for each session, objects are instantiated from it's data cache).
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DAO design decission

Hi All,
Currently in my j2ee project, we are using hibernate for database access. for this iam using DAO pattern, as follows .
1) will be calling DAO abstract factory pattern from business service, to give DAO factory object.
2) with this object, i will try to create a dao factory object(specific for hibernate or jdbc as necessary).
3) on getting corresponding hibernate/jdbc dao factory object, i will create application specific dao object to interact , ie emplyoeeDAO etc.
I just want to know whether this is a correct approach to handle jdbc also, if in future if we use.
Thanks,
kk
Edited by: krishna_keriti123 on Dec 17, 2008 7:41 PM

Why not invert control? Do you use Spring? That provides a neat way of abstracting your DAO strategy and wiring the dependencies up. The problem I see with using the abstract factory pattern for DAOs as you've described, is the sheer number of lookups business services will have to do. They have to get hold of the factory, and then look up the DAO as well. With dependency injection, they just get built with what they need up-front. You needn't actually use Spring for DI, you could roll it yourself. But coupled with the DAO support, and other supporting services, I think you've got a good case for using Spring here

Hibernate question.

Does hibernate eliminate the DAO design pattern? If yes what are the advantages and disadvantages of hibernate over DAO design pattern.
Thanks in advance.

Thanks for your responses. Is it possible to create
custom methods rather than the standard get methods
in hibernate? For example sometimes i might require
data from which satisfies criteria from 2 different
columns or sometimes i might require data wihch is
greater than a specific value.I'm not sure exactly what you're asking, but if it's something you might do with halfway reasonable code and data model (or even for many things that that only very stupid code and data model would do), the answer to "can you do it with Hibernate" is almost certainly "YES."
Hibernate is very flexible. It will do most things in a very reasonable default way without you even having to tell it much. You can make custom queries with HQL--a SQL-like query language that Hibernate uses, or even directly in SQL. There are many ways to customize its behavior.

Single transaction through multiple service objects [Spring]

Hello.
I have multiple service objects, while methods in service objects represent use cases.
If I call the method from the other method in the same service object, then the second (called) method uses the same transaction as the first (caller), because of default propagation REQUIRED is applied.
.. as is shown in the following pseudo code:
@Transactional
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@Transactional
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Thank you in advance.

I would like it to be done is single transaction but it isn't. As the bean is retrieved from the spring context in OrderService's method
PersonService personService = CONTEXT.getBean("personService");a new transaction for PersonService is started. So then I have two transactions in progress - one for OrderService and second for PersonService. I need the PersonService (or any other service object) to detect already pending transaction and use that. Not create new (it's own). I use no arguments in @Transactional annotation so default propagation REQUIRED should be used, but it still creates a new transaction for PersonService stuff.
I'm posting my applicationContext.xml (simplified slightly)
<beans default-autowire="byType">
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          class="org.springframework.jdbc.datasource.DriverManagerDataSource">
     </bean>
     
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          class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
          <property name="dataSource">
               <ref local="dataSource" />
          </property>
     </bean>
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     <bean id="personService" class="net.package.service.PersonService" />
     <bean id="orderService" class="net.package.service.OrderService" />
</beans>Thank you

Unable to view list in drop down menu - JSTL - urgent view requires Pls

Hello,
I have the following code in my controller: Spring Framework, Hibernate with DAO is used to persist objects to DB.
view plaincopy to clipboardprint?
if((usacs.getRole().equals("salesperson")) && (usacs.getUsername().equals("sp")) && (usacs.getPassword().equals("sp")))
session.setAttribute("role", role);
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List<UserAccount> cust = uads.getPersonsByRole("customer");
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I am putting the user name and the list of person of role type customer into the model, myModel.
When I debug, I am able to see the customer names in custList.
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Choose Customer to serve:
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<c:forEach items="${splogin1.custList}" var="c">
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It shows me a empty drop down with no values in it.
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Can someone please help.
Thank You.

Yes, meant to pop that in the original post, Had a look in the per-location element. Nothing there either! It's disappeared from the site, but as I say a legacy Hyperlink stored in favourites
still brings it out - I can edit the page when I get there etc...
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Why we need XML?

hi,
Why we need XML.?(we have ascii file format is a gentral format, to access all plateform,why not we didn't follow.?)
like XML:
<contact>
<name> java</name>
<age>25</age>
</contact>
flat files:
contact name:java age:25
i feel flat file is small and easy .....why we didn't use it.........?

PS - Jos, how's the weather in your garden today?
(Rainy and cool here.) Well picture this: both of my parrots are trying to
sleep in their own hollow
coconut, slightly disturbed by some silly squeaky
bird at the other side
of the barn. The fish in the pond are sort of
sunbathing between the
floating leafs, my wife seems to be in a catatonic
state sleeping all the
time and then there's me in front of my little laptop
(protected by a silly
little green umbrella like thingy, the laptop that is
;-)A nice image indeed.
It's been one wet spring here. It's very cool and overcast, threatening more rain. I'm sitting in my office working away on getting my head around Spring. I've been going through Rob Harrop's "Pro Spring" slowly and carefully, making all the code work and taking little side trips to set it into my head. Rod Johnson's team is doing a great job, in my opinion.
I still feel that the Spring framework, the web part
of it, is as some sort
of a corset, a hindrance. I feel like I'm all
dressed up but nowere to go
because Spring or something else I don't know about
forbids me ... I
know that I have it wrong alltogether but I can't get
a grip on it. Not sure what the impediment is, but then I don't understand all the nuances of Spring yet. Maybe their newer web flow stuff might help. It models a UI as a state machine, so you can do more complex flows from page to page. The finite automata underneath will appeal to your inner mathematician. 8)
btw. it's in
the lower thirties here (celcius); that makes it in
the lower nineties (fahrenheit).
btw, YoGee helped me a lot yesterday.No surprise there. YoGee sure is smart. While I was reading the thread I wished that I had seen it first. You've been so helpful to me so often that I would have enjoyed reducing the trade deficit I have with you. I know that particular problem with Tomcat and JSTL well.
Yep, I'm working on a large ('Dutch-wise' speaking
that is) optic fibre
network. Technically this network works great.
Managerially speaking
ahem there's nothing yet: no services, no control
of services, no
network checking stuff, no customer (crm) stuff, no
nothing. Those folks
want me to do it all. Sounds like a great problem. Could be an engagement to carry you through the summer.
Yes, that particular part gave me blood behind my
eyes: I did everyhing
according to the book and that crap simply refused to
work. It turned out
that I was trying to develop something against wrong
versions of several
components. In a certain way I'm a believer, i.e.
when I finally do understand
what it's all about I "walk this way" when the
documentation tells me to
"walk this way". When that turns out not to work at
all I want my pink
inflatable axe again (or worse ;-)I like Tomcat, but I think the docs are sketchy. This seems to be a common problem.
No, I feel reluctant to introduce yet another
technology while I'm still
struggling with the ones I found necessary to use.Me, too. I'm overwhelmed by all that I don't know. That's why I'm taking the time to get all the way through Spring once. I've been reading and dabbling, but I haven't given it enough concentrated attention to have it under my fingers. I've got three personal projects lined up once I get through "Pro Spring" that should set it into my head nicely.
<advertisement>
By the way, I decided to buy a copy of IntelliJ. I've never paid for an IDE, but since I've gotten used to it at work I don't want to be without it. I've never championed an environment as much as I do this one. I used Eclipse for several years and was glad to have it, but I'd still find myself slipping out and using a text editor to do quick things. IntelliJ doesn't get in my way. It's completely eliminated any temptation to use a text editor. A terrific product that's only getting better with time.
</advertisement>
<disclaimer>I'm not related to anyone who works for or affiliated with JetBrains in any way. Just a happy customer.
</disclaimer>
I'm not a GUI guy myself, far from that and I'd like
to stay away from it as
far as possible. As I wrote above I feel "all dressed
up but nowhere to go".
I've got my beans all ready, my DataSources are all
solid and sound; I
can see that everything works (from the logs), but
that darn web stuff
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>
I think I'll take another Grolsch and chase that
silly squeaky bird away.
Enjoy your weekend!
kind regards,
JosYou too! Go enjoy some World Cup football!
%

JSF calls DAO layer based on JPA/Hibernate throws NPE

I'm new in JSF and Hibernate;
I'm using Hibernate as JPA provider, the dataaccess is tied to DAO layer; when my JSF controller(UserController) calls the getUsers() of my DAO layer
(Glassfish is the app Server I use)
NullpointerException is thrown, I assume it's because instance of BasicDAO is initialized, where do I have to instantiate BasicDAO
here is my code :
public class BasicDAO {
@PersistenceUnit(unitName = "test5PU")
private EntityManager entityManager;
public void setEntityManager(EntityManager entityManager)
{        this.entityManager = entityManager;    }
public List getUsers() {
Query query = entityManager.createNamedQuery("User.findAllUsers");
return query.getResultList();
public User findUser(String id) {
try{
Query q = entityManager.createNamedQuery("User.findByIdUser");
User o = (User)q.getSingleResult();
return o;
} finally {
entityManager.close();
public class UserController {
/** Creates a new instance of UserController */
public UserController() {
private DataModel model;
private BasicDAO basicDAO;
public DataModel getUsers() {
return new ListDataModel(basicDAO.getUsers());
public void setBasicDAO(BasicDAO basicDAO) {
this.basicDAO = basicDAO;
public BasicDAO getBasicDAO() {
return this.basicDAO;
public User findUser(String id) {
return basicDAO.findUser(id);
List.jsp :
<h:dataTable value='#{user.users}' var='item' border="1" cellpadding="2" cellspacing="0">
<h:column>
<f:facet name="header">
<h:outputText value="IdUser"/>
</f:facet>
<h:outputText value="#{item.idUser}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="Password"/>
</f:facet>
<h:outputText value="#{item.password}"/>
</h:column>
</h:dataTable>

in fact, i did some tests, and the reason why the NPE happens revealed to be caused by the call to
this.emf = Persistence.createEntityManagerFactory(persistenceUnitName, emfProperties);
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<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="test9PU" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>JeeCertDB</jta-data-source>
<class>persistence.user.User</class>
<properties>
<property name="hibernate.jdbc.driver"
value="com.mysql.jdbc.Driver" />
<property name="hibernate.jdbc.url"
value="jdbc:mysql://localhost:3306/JeeCertDB" />
<property name="hibernate.jdbc.user" value="root" />
<property name="hibernate.jdbc.password" value="belly" />
<property name="hibernate.logging.level" value="INFO" />
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Message was edited by:
S_screen

Hibernate, DAO pattern and tree hierarchy

Hi all,
I use Hibernate for a short period of time and now I'm facing a complex problem . I try figure it out what is the best practice for the following scenario:
I have the following classes: Department, Team, Position, all of them inherited from a Entity class even there is almost no difference between them. But I wanted different classes for different entities.
I try to create a tree hierachy, each object is with all others in a bidirectional one-to-many relationship. For example a Department can have Teams and Positions as children and a Position can have Departments and Teams as children.
I created the mapping files and I don't know how to create all necessary methods without duplicating the code.
Questions:
1. Do I need a DAO pattern implemented for this design?
2. Can you recomend some documentation or ideas that will help me find out what is the best approach in this case?
Thanks

Write the DAO for the class that is the root of the tree. Sounds like it should be DepartmentDao.
I don't know of much better documentation than the Hibernate docs. Check their forum, too.
%

DAO classes and Hibernate

hi all
need help.
i have one dought where is used DAO classes and where is
used Hibernate.i think both r used for data base access ,but why we are
used both.
thanks in advence.

i have one dought where is used DAO classes and where is
used Hibernate.Awesome, we got doubt misused AND misspelled!
i think both r used for data base accesscorrect!
but why we are used both.DAO is a design pattern (concept) and Hibernate is a product (code implementation).
Hibernate is a DAO implementation. That said, you don't need both, in fact you don't need either.

Generic Hibernate dao

Hi, I have been working with a generic HibernateDao to which I pass the entity type through a constructor parameter, and it works perfectly. I ran into a [SpringSource team blog|http://blog.springsource.com/2006/09/29/exploiting-generics-metadata/] by Rob Harrop that explained how to determine the actual type of the parameter at runtime. I also found a [page on the Hibernate documentation|http://www.hibernate.org/328.html] that explained the same concept. I used Robs version for my own GenericDao:
public class HibernateDao<E> implements GenericDao<E> {
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    private Class<E> entityClass;
    public HibernateDao() {
        entityClass = extractTypeParameter(getClass());
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   private Class extractTypeParameter(Class<? extends GenericDao> genericDaoType) {
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        // find the generic interface declaration for GenericDao<E>
        ParameterizedType genericInterface = null;
        for (Type t : genericInterfaces) {
            if (t instanceof ParameterizedType) {
                ParameterizedType pt = (ParameterizedType)t;
                if (GenericDao.class.equals(pt.getRawType())) {
                    genericInterface = pt;
                    break;
        if(genericInterface == null) {
            throw new IllegalArgumentException("Type '" + genericDaoType
               + "' does not implement GenericDao<E>.");
        return (Class)genericInterface.getActualTypeArguments()[0];
}and ran into a ClassCastException: sun.reflect.generics.reflectiveObjects.TypeVariableImpl cannot be cast to java.lang.Class for the line with the return statement. It seems they both implement the Type interface, but they are no subclasses of each other. These articles must have been read and tried by numerous people and I found other sites that implement the same thing, what am I doing wrong to get this exception?
Edited by: Peetzore on 9-feb-2009 14:45

OK, I've also encountered the same problem, investigated it and finally got into solution.
The trick with getActualTypeArguments() being of type Class and not TypeVariable works when you instantiate the type argument statically, not dynamically.
Statically here means:
class SomeEntityHibernateDAO extends HibernateDAO<SomeEntity> { ... }
SomeEntityHibernateDAO dao = new SomeEntityHibernateDAO();and dynamically:
HibernateDAO<SomeEntity> dao = new HibernateDAO<SomeEntity>();In the first case, the "actual type argument" (like in getActualTypeArgument) of E in your code gets bound to Class<SomeEntity>, in the second - to TypeVariable.
It may be the case, that the desired Class object is further extractable from the TypeVariable (look at its methods), but simply what you may want is to define separate classes for all entities (statically binding the type parameter) and use these instead of generic declarations.
Hope it helps.
Cheers,
Jarek

Hibernate - Spring - problem with mapping (many-to-many)

Hello,
I want to map the following situation. I have a table called EDUCATION and a table called SCHOOLS. Between those tables I have an associative table called EDUCATION_SCHOOLS. The (usefull) fields:
EDUCATION:
id (long) - PK
name (varchar)
versionNr (long)
SCHOOLS:
id (long) - PK
name (varchar)
versionNr (long)
EDUCATION_SCHOOLS:
id (long) - PK
education_id (long) (FK to EDUCATION.id)
school_id (long) (FK to SCHOOLS.id)
name (varchar)
versionNr (long)
Their is a Unique Constraint between EDUCATION_SCHOOLS.education_id and EDUCATION_SCHOOLS.school_id.
What I want to be able to do:
EDUCATION: select, update, insert
SCHOOLS: select, update, insert
EDUCATION_SCHOOLS: select, update (only the non-FK fields), insert
I never want to delete anything in those tables. (and it's never ever going to be an option either)
Hibernate version:
Hibernate-Version: 3.0.5
Mapping documents:
Education:
<hibernate-mapping>
     <class name="##.Education" table="EDUCATION">
          <id name="id" column="ID" type="java.lang.Long">
               <generator class="sequence">
                    <param name="sequence">EDUCATION_SEQ</param>
               </generator>
          </id>
          <version name="versionNr" column="VERSIONNR" type="long"/>
          <property name="name" column="NAME" type="string" />
        <set name="SCHOOLS" table="EDUCATION_SCHOOLS">
            <key column="EDUCATION_ID" />
            <many-to-many class="##.Schools" column="SCHOOL_ID" lazy="false" />
        </set>
</hibernate-mapping>
Schools:
<hibernate-mapping>
     <class name="##.Schools" table="SCHOOLS">
          <id name="id" column="ID" type="java.lang.Long">
               <generator class="sequence">
                    <param name="sequence">SCHOOLS_SEQ</param>
               </generator>
          </id>
          <version name="versionNr" column="VERSIONNR" type="long"/>
          <property name="name" column="NAAM_NAME" type="string" />
        <set name="educations" table="EDUCATION_SCHOOLS" inverse="true" cascade="none">
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            <many-to-many class="##.Schools" column="SCHOOL_ID" lazy="proxy"/>
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</hibernate-mapping>
Education_schools:
<hibernate-mapping>
<class name="##.EducationSchools" table="EDUCATION_SCHOOLS">
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          </id>
          <version name="versionNr" column="VERSIONNR" type="long" />
          <many-to-one name="education" class="##.Education" cascade="none" lazy="proxy"
                       column="EDUCATION_ID" not-null="true"/>
        <many-to-one name="schools" class="##.Schools" cascade="none" lazy="proxy"
                    column="SCHOOL_ID" not-null="true"/>
</hibernate-mapping>
Name and version of the database you are using:
Oracle XE 10g
I am able to:
EDUCATION: select, insert, update
SCHOOLS: select, insert, update
EDUCATION_SCHOOLS: select
Problems:
EDUCATION_SCHOOLS: when I try to insert, I sometimes get unique constraint violations. (when I should get them, thus I'm trying to insert something that already exists .. but how do I stop Hibernate from Inserting?)
EDUCATION_SCHOOLS: when I try to update, sometimes it works, but often I get:
23:03:55,484 [http-8081-1] ERROR be.vlaanderen.lne.vea.epb.ui.struts.EpbExceptionHandler - org.springframework.orm.hibernate3.HibernateOptimisticLockingFailureException: Object of class [##.EducationSchools] with identifier [null]: optimistic locking failed; nested exception is org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [##.EducationSchools#<null>]
ex.getMessage() Object of class [##.EducationSchools] with identifier [null]: optimistic locking failed; nested exception is org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [##.EducationSchools#<null>]
org.springframework.orm.hibernate3.HibernateOptimisticLockingFailureException: Object of class [##.EducationSchools] with identifier [null]: optimistic locking failed; nested exception is org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [##.EducationSchools#<null>]
Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect):As you can see from the stacktrace I use Spring for the transactionManager: org.springframework.orm.hibernate3.HibernateTransactionManager in which I use e sessionFactory: org.springframework.orm.hibernate3.LocalSessionFactoryBean
In my DAO, I try to save with the regular this.getHibernateTemplate().saveOrUpdate that has always worked for me.
Another problem I have:
when i update "name" in EDUCATION, the records with that ID are delete from EDUCATION_SCHOOLS ...
As I am experiencing 3 different problems, I'm pretty sure something is wrong in the mapping files .. however I fail to find out what .. Any input would be greatly appreciated.
(I translated some class/table-names, that's what the ## cause)
Edited by: Bart_Blommaerts on Jul 29, 2008 11:53 PM

Thank you for your input.
When I try what you suggest, I still get the same error:
16:39:30,406 [http-8081-1] ERROR ###.EpbExceptionHandler - org.springframework.orm.hibernate3.HibernateOptimisticLockingFailureException: Object of class [###.EducationSchools] with identifier [2]: optimistic locking failed; nested exception is org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [###.EducationSchools#2]
ex.getMessage() Object of class [###.EducationSchools] with identifier [2]: optimistic locking failed; nested exception is org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [###.EducationSchools#2]
org.springframework.orm.hibernate3.HibernateOptimisticLockingFailureException: Object of class [###.EducationSchools] with identifier [2]: optimistic locking failed; nested exception is org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [###.EducationSchools#2]
Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [###.EducationSchools#2]If you had to map the database tables, I'm trying to map, how would you do it?

Deployement problem in Oracle App Serv with hibernate + JPA and Spring

Dear All,
     I am facing a problem in deployment of a web application in oracle application server 10g. but the same is working fine with Tomcat. The following Exception. Is being thrown.
     Failed to deploy web application "OraTest". Failed to deploy web application OraTest". . Nested exception Resolution:
Base Exception:
java.rmi.RemoteException
deploy failed!: ; nested exception is:
oracle.oc4j.admin.internal.DeployerException: Unknown assembly root-tag attribute: version. deploy failed!: ; nested exception is:
oracle.oc4j.admin.internal.DeployerException: Unknown assembly root-tag attribute: version     I am using the following technologies
1.     Spring 2.0.7
2.     Struts 2.0.9
3.     Hibernate 3.3
4.     JPA 1.0
5.     Oracle App Server 10.1.2.0.2
Web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
     <display-name>My Application</display-name>
     <filter>
          <filter-name>struts2</filter-name>
          <filter-class>
               org.apache.struts2.dispatcher.FilterDispatcher
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     </filter>
     <filter-mapping>
          <filter-name>struts2</filter-name>
          <url-pattern>/*</url-pattern>
     </filter-mapping>
     <welcome-file-list>
          <welcome-file>/index.jsp</welcome-file>
     </welcome-file-list>
     <servlet>
          <servlet-name>dwr-invoker</servlet-name>
          <servlet-class>
               org.directwebremoting.servlet.DwrServlet
          </servlet-class>
          <init-param>
               <param-name>debug</param-name>
               <param-value>true</param-value>
          </init-param>
     </servlet>
     <servlet-mapping>
          <servlet-name>dwr-invoker</servlet-name>
          <url-pattern>/dwr/*</url-pattern>
     </servlet-mapping>
     <listener>
          <listener-class>
               org.springframework.web.context.ContextLoaderListener
          </listener-class>
     </listener>
     <context-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>
               /WEB-INF/conf/spring/datasource-context.xml,
               /WEB-INF/conf/spring/aop-context.xml
          </param-value>
     </context-param>
</web-app>
/Datasource-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">
     <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" lazy-init="true"/>
     
        <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" lazy-init="true">
          <property name="driverClassName">
               <value>oracle.jdbc.driver.OracleDriver</value>
          </property>
          <property name="url">
               <value>jdbc:oracle:thin:@//xxx.xxx.xxx.xxx/mydb</value>
          </property>
          <property name="username">
               <value>admin</value>
          </property>
          <property name="password">
               <value>admin</value>
          </property>
     </bean>
     
     
     <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" lazy-init="true">
          <property name="persistenceUnitName" value="mkclsetsPersistenceUnit"/>
          <property name="dataSource" ref="dataSource"/>
          <property name="jpaVendorAdapter">
               <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" lazy-init="true">
                    <property name="database" value="ORACLE"/>
                    <property name="showSql" value="true"/>
               </bean>
          </property>
     </bean>
     <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager" lazy-init="true">
          <property name="entityManagerFactory" ref="entityManagerFactory"></property>
     </bean>
     <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>Aop-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">

     <bean id="methodLoggingAdvice" class="com.mkcl.sets.common.interceptor.MehodLogInterceptor"/>
     
      
     <bean id="methodCachingAdvice"
          class="com.mkcl.sets.common.interceptor.MethodCacheInterceptor">
          <property name="cache">
               <ref local="methodCache" />
          </property>
     </bean>
     <bean id="cacheManager"
          class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
          <property name="configLocation">
               <value>WEB-INF/conf/other/ehcache.xml</value>
          </property>
     </bean>
     <bean id="methodCache"
          class="org.springframework.cache.ehcache.EhCacheFactoryBean">
          <property name="cacheManager">
               <ref local="cacheManager" />
          </property>
          <property name="cacheName">
               <value>mkclSetsCache</value>
          </property>
     </bean>
     
     <aop:config>
          <aop:pointcut id="getCountriesPointCut" expression="execution(* com.mkcl.sets.dao.master.impl.LocationDAOImpl.getCountries())"/>
          
          <aop:pointcut id="methodLogPointCutDao" expression="execution(* com.mkcl.sets.dao..*.*(..))"/>
          <aop:pointcut id="methodLogPointCutService" expression="execution(* com.mkcl.sets.service..*.*(..))"/>
          <aop:advisor id="methodCachingAdvisor" advice-ref="methodCachingAdvice" pointcut-ref="getCountriesPointCut"/>
          <aop:advisor id="methodLoggingAdvisorDao" advice-ref="methodLoggingAdvice" pointcut-ref="methodLogPointCutDao"/>
          <aop:advisor id="methodLoggingAdvisorService" advice-ref="methodLoggingAdvice" pointcut-ref="methodLogPointCutService"/>
     </aop:config>
</beans>Persistence.xml
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
    version="1.0">
     <persistence-unit name="mkclsetsPersistenceUnit" transaction-type="RESOURCE_LOCAL">
          
          <provider>org.hibernate.ejb.HibernatePersistence</provider>
          
     </persistence-unit>
</persistence>Do I need to add some other configuration in the existing files or do I need to add some other configuration files ? Please help to deploy my application.
Thanks a lot in advance.
With Best Regards,
Ishaan
null

Did you ever find a solution to this Ishaan?
I imagine you ended up having to upgrade 10gR2 to 10gR3 at least. Correct?

How to integrate hibernate with Stateless Session bean in weblogic10.0

Hi,
I need to invoke hibernate(3.x) DAO from EJB Stateless Session bean(EJB2.x). I am using mysql database. Can somebody please post the configuration.
Thanks in advance,
Rushi.

Hi Deepak,
Thanks for your reply.
Actually, our stand alone java application already using spring-hibernate feature. Now we are planning divide our application into modules and deploy each module as ejb beans. As it is already integrated with spring-hibernate we are not using entity beans as of now. My understanding is container uses some default transcation management .so, my question is what are all the configurations needs to be done to let weblogic 10.0 server uses org.springframework.orm.hibernate3.HibernateTransactionManager. I mean, is there are any .xml file in weblogic to configure all these? please reply deepak I am struck here..
Regards,
Rushi.

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