Thread: [Springframework-developer] (no subject)

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Isabelle,

can you please change KeyBinder.Bind() method name to begin with the lower
case letter.

Thanks,

Dmitriy.

As it seems access issues and I cannot check it now,

I send the files in the list as they are tiny,

__________________________________ 
Jean-Pierre Pawlak
jp....@ti...

Hi,

I have been lurking on this list for a while.  And I am currently 
experimenting with Spring 0.9.

In a recent email, Juergen asked for feedback from people using Spring.  
Here goes.

In my application, I wanted to have something like a Wizard when a user is 
filling a form.  I used the AbstractWizardFormController.

My form object contains a collection.  Using the wizard, I would like that 
one step allowed the user to add an arbitrary number of items to the 
collection. So each time a user adds an item, the same step is displayed so 
that he can continue adding. When he is finished he just presses the Next 
or Finish Button.

I have modified the petclinic application to see how I could do this with 
Spring.  I modified the AddOwnerForm so that when a Owner is Added his pets 
can also be added.  What I did is add a second step where a Pet can be 
created.  On this steps there are the standard Prev, Cancel and Finish 
Buttons.  But there is also a Add button to add the pet to the owner.  The 
add button points to the current wizard step.

I modified the onBindAndValidate() method to check for the presence of the 
_target1 attribute for page1. If it is there, it means that the user has 
pressed the Add button. I create a pet and add it to the owner. It kinda 
works, but is a bit klunky. I do not like the fact that I had to hard code 
"_target1" to make this work.

Is there a better way to do this?

English is not my first language, so my explanation may not be clear.  Just 
ask and I will explain further.

Thanks
Jean-Francois Cormier

Here is the code to the AddOwnerAndPetForm

/*
 * Created on 2-Jul-2003
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package petclinic.web;

import java.io.IOException;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import petclinic.Clinic;
import petclinic.Owner;
import petclinic.Pet;

import com.interface21.validation.BindException;
import com.interface21.validation.Errors;
import com.interface21.web.servlet.ModelAndView;
import com.interface21.web.servlet.mvc.AbstractWizardFormController;

/**
 * @author jxc170
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class AddOwnerAndPetsForm extends AbstractWizardFormController {

	private Clinic clinic;

	public AddOwnerAndPetsForm() {
		setCommandClass(Owner.class);				
	}

	/* (non-Javadoc)
	 * @see 
com.interface21.web.servlet.mvc.AbstractWizardFormController#validatePage(java.lang.Object, 
 com.interface21.validation.Errors, int)
	 */
	protected void validatePage(Object command, Errors errors, int page) {
		// TODO Auto-generated method stub
		logger.debug("Validate Page:" + page);
	}

	/* (non-Javadoc)
	 * @see 
com.interface21.web.servlet.mvc.AbstractWizardFormController#processFinish(javax.servlet.http.HttpServletRequest, 
 javax.servlet.http.HttpServletResponse, java.lang.Object, 
com.interface21.validation.BindException)
	 */
	protected ModelAndView processFinish(HttpServletRequest 
request,HttpServletResponse response,Object command,BindException errors) 
	throws ServletException, IOException {
		Owner owner = (Owner) command;

		getClinic().insert(owner);

		List pets = owner.getPets();
		Object[] petArray = pets.toArray();
		for ( int i = 0; i < petArray.length; i++) {
			Pet pet = (Pet) petArray[i];
			pet.setOwner(owner);
			getClinic().insert(pet);			
		}

		return new ModelAndView("ownerRedirect", "ownerId", 
Integer.toString(owner.getId()));				

	}

	/* (non-Javadoc)
	 * @see 
com.interface21.web.servlet.mvc.AbstractWizardFormController#referenceData(javax.servlet.http.HttpServletRequest, 
 java.lang.Object, com.interface21.validation.Errors, int)
	 */
	protected Map referenceData(HttpServletRequest request,Object 
command,Errors errors,int page) throws ServletException {
		Map model = new HashMap();
		System.out.println("\n\n\n+++++++++++++++++++++++++++++++++++++++++++\n\n\n") 
;
		System.out.println(" GETTING TYPES ");
		Map types = clinic.getTypes();
		System.out.println("\n\n\n+++++++++++++++++++++++++++++++++++++++++++\n\n\n") 
;
		model.put("types", types);

		return model;
	}

	/* (non-Javadoc)
	 * @see 
com.interface21.web.servlet.mvc.AbstractWizardFormController#processCancel(javax.servlet.http.HttpServletRequest, 
 javax.servlet.http.HttpServletResponse, java.lang.Object, 
com.interface21.validation.BindException)
	 */
	protected ModelAndView processCancel(
		HttpServletRequest request,
		HttpServletResponse response,
		Object command,
		BindException errors)
		throws ServletException, IOException {			
		// TODO Auto-generated method stub
		logger.debug("Wizard Canceled");
		return null;
	}

	/* (non-Javadoc)
	 * @see 
com.interface21.web.servlet.mvc.AbstractWizardFormController#onBindAndValidate(javax.servlet.http.HttpServletRequest, 
 java.lang.Object, com.interface21.validation.BindException, int)
	 */
	protected void onBindAndValidate(HttpServletRequest request,Object 
command,BindException errors,int page) throws ServletException {
		logger.debug("On Bind and Validate Page:" + page);
		switch (page) {
			case 0:
				break;
			case 1:
				if ( request.getParameter("_target1") != null ) {
					String petName = request.getParameter("name");
					String petBirthDate = request.getParameter("birthDate");
					String type = request.getParameter("typeId");
					if ( petName != null ) {				
						Pet pet = new Pet();
						pet.setName(petName);
						int year = Integer.parseInt(petBirthDate.substring(0,4));
						int month = Integer.parseInt(petBirthDate.substring(5,7));
						int day = Integer.parseInt(petBirthDate.substring(8,10));										
						pet.setBirthDate(new Date(year, month, day));
						pet.setTypeId(Integer.parseInt(type));
						Owner owner = (Owner) command;				
						owner.addPet(pet);
					}		
				}				
				break;
			default:
				break;		
		}
	}

	/**
	 * @return
	 */
	public Clinic getClinic() {
		return clinic;
	}

	/**
	 * @param clinic
	 */
	public void setClinic(Clinic clinic) {
		this.clinic = clinic;
	}

}

Finally I've managed to get the whole thing working with Hibernate and
WebLogic.

There are still a few newbie questions left:

In applicationContext.xml from the Hibernate skeleton I've defined this
part:

<bean id="exampleDataAccessObject" class="example.ExampleDataAccessObject">
  <property name="sessionFactory"><ref bean="mySessionFactory"/></property>
  <property name="exampleParam"><value>someValue</value></property>
</bean>

1.) When do I need the part defining (do I need it at all?)

<bean id="exampleBusinessObject" class="example.ExampleBusinessObject">
  <property name="transactionManager"><ref
bean="myTransactionManager"/></property>
  <property name="dataAccessObject"><ref
bean="exampleDataAccessObject"/></property>
  <property name="exampleParam"><value>someOtherValue</value></property>
</bean>

2.) In my DAO implementation I use HibernateTemplate. I assume that those
methods
are transaction safe with only the first part ("exampleDataAccessObject")
defined (?).

3.) Spring provides a "Controller" and a "MultiActionController". For sure
there are lots 
of architectural reasons for providing both. But wouldn't it be easier just
to provide one
kind of controller ? E.g. in WebWork 1 you can make a class ActionAware,
SessionAware, etc. 
which is very easy to understand (when to use what even without
documentation).

Thanks again
Lars

Rod & All,

Spring got a nice plugg from Gavin King in the interview on the ServerSide that
has just been posted. ( http://www.theserverside.com/events/index.jsp )

Q: One of the reasons why transparent persistence may not be getting as much
attention is because a lot people just arent writing domain models. Why do you
think people are not yet adopting such a good object-oriented paradigm yet?

A: Firstly, not every application needs a domain model. There are lots of
applications for which a domain model is absolute overkill. There are lots of
applications for which a view of sets of data coming out of the database is
absolutely appropriate. And theres all kinds of good tools in Java, in the open
source community, for writing that kind of application well, things like the
Spring Framework give you great ways of getting away a bit from very messy JDBC
code, but writing those kind of applications which pull some stuff form the
database and display it on the screen, or insert a row of data into the
database. You dont need a domain model to do those kinds of things.

Thomas

Everyone,

how about getting rid of "grant all to public" schema in JPetstore's oracle schema script and creating a separate schema, let's say 'jpet'?

Regards,
Dmitriy.

confirm 722607 

DQo=

---------------------------------
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I am getting the following exception when accessing a proxy that is set
up as following, I have tested this and it worked when I deployed my ejb
module standalone and used
"SimpleRemoteStatelessSessionProxyFactoryBean" instead of
"LocalStatelessSessionProxyFactoryBean". =20

=20

I pretty much just followed the ref. doc on the spring website.  I know
the EJB has been deployed to the container and that the JNDI is working
because the bean I have that is using this "vehicleProxy" is getting it
just fine.  Just when I try to call a method on the "vehicleProxy" is
when my exceptions start coming up.=20

=20

I am NOT implementing the interface VehicleServiceProxyI in my
LocalInterface only in my EJB BeanClass.

=20

Any ideas on why I am getting this exception would be greatly
appreciated!!!

=20

  <bean id=3D"vehicleProxy" name=3D"vehicleProxy"=20

=20
class=3D"org.springframework.ejb.access.LocalStatelessSessionProxyFactory=
B
ean">

                <property
name=3D"jndiName"><value>com.edmunds.common.vehicles.service.VehicleServi=
c
eLocalHome</value></property>

                <property
name=3D"businessInterface"><value>com.edmunds.common.vehicles.service.pro=
x
y.VehicleServiceProxyI</value></property>

  </bean>

=20

public interface VehicleServiceProxyI extends ServiceProxy{

            //Methods are defined here.

}

=20

public class VehicleServiceBean implements SessionBean,
VehicleServiceProxyI {

}

=20

Caused by: java.lang.IllegalArgumentException: object is not an instance
of declaring class

            at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)

            at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39)

            at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)

            at java.lang.reflect.Method.invoke(Method.java:324)

            at
org.springframework.ejb.access.LocalSlsbInvokerInterceptor.invoke(LocalS
lsbInvokerInterceptor.java:60)

            at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(Ref
lectiveMethodInvocation.java:138)

            at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAo
pProxy.java:152)

            at $Proxy13.getModelByID(Unknown Source)

            at
com.edmunds.insideline.web.struts.TestProxyAction.execute(TestProxyActio
n.java:45)

            ... 16 more

Karim,

First of all, this is a list for development of Spring itself. You 
should be using the forums at forum.springframework.org, for help...

As to your problem, I think your Local Interface does not actually 
implement your business interface... The proxy is blowing up at:

ejb = getSessionBeanInstance();
return invocation.getMethod().invoke(ejb, invocation.getArguments());

basically the local interface that the ejb stub which comes back has, 
does not match the class on the actual Method object, which is coming 
from what you declared on the proxy...

Colin

Qazi, Karim wrote:

> I am getting the following exception when accessing a proxy that is 
> set up as following, I have tested this and it worked when I deployed 
> my ejb module standalone and used 
> “SimpleRemoteStatelessSessionProxyFactoryBean” instead of 
> “LocalStatelessSessionProxyFactoryBean”.
>
> I pretty much just followed the ref. doc on the spring website. I know 
> the EJB has been deployed to the container and that the JNDI is 
> working because the bean I have that is using this “vehicleProxy” is 
> getting it just fine. Just when I try to call a method on the 
> “vehicleProxy” is when my exceptions start coming up.
>
> I am NOT implementing the interface VehicleServiceProxyI in my 
> LocalInterface only in my EJB BeanClass.
>
> Any ideas on why I am getting this exception would be greatly 
> appreciated!!!
>
> <bean id="vehicleProxy" name="vehicleProxy"
>
> class="org.springframework.ejb.access.LocalStatelessSessionProxyFactoryBean">
>
> <property 
> name="jndiName"><value>com.edmunds.common.vehicles.service.VehicleServiceLocalHome</value></property>
>
> <property 
> name="businessInterface"><value>com.edmunds.common.vehicles.service.proxy.VehicleServiceProxyI</value></property>
>
> </bean>
>
> public interface VehicleServiceProxyI extends ServiceProxy{
>
> //Methods are defined here.
>
> }
>
> public class VehicleServiceBean implements SessionBean, 
> VehicleServiceProxyI {
>
> }
>
> Caused by: java.lang.IllegalArgumentException: object is not an 
> instance of declaring class
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>
> at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>
> at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:324)
>
> at 
> org.springframework.ejb.access.LocalSlsbInvokerInterceptor.invoke(LocalSlsbInvokerInterceptor.java:60)
>
> at 
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
>
> at 
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
>
> at $Proxy13.getModelByID(Unknown Source)
>
> at 
> com.edmunds.insideline.web.struts.TestProxyAction.execute(TestProxyAction.java:45)
>
> ... 16 more
>

-- 
Chris Parsons
ch...@rs...

------------------
Hari Haran
9886484326
26588360 ext: 3134
------------------ 

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Thread: [Springframework-developer] (no subject)

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