enterprise-app for Vaadin add-on

Flow
29

Hi John. Would you be able to attach an example project?

30

Hi, you want the whole project I’m working? or just classes and db?

31

Hi, I’m having a lot of problems with relationships in tables, now I’m getting a org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.jarris.dto.Vta.vtls, no session or session was closed as you can see there’s a new relation in table Vta, but now I’m getting this exception… I can send you the whole project? I’ll reward you if you help me to finish this…

32

Hi John.

I would say that if you are having LazyInitializationExceptions, something is wrong in your code, not in the add-on. However I’d need to see your code to confirm that. Please send me a message using the contact form at
http://alejandroduarte.weebly.com/contact-me.html
 to help you solve this issues more easyly.

33

Hi,
Is there a maven pom for this addon?

34

Hi.

There’s no maven pom yet. I will work on that once I publish a stable version.

35

Hi there,
i’ve a question concerning ManyToMany relations. I’ve configured such a relation like this:

In the Module i get something like this:

But i need something like that:

Only a component that selects the entry from Bunch and put a entry in the (ManyToMany) user_bunch table (set the relation) …

How can i do that?

36

Hi Mathias.
Implement your own
DefaultCrudFieldFactory
 overriding
createCustomField()
 to return a custom
TwinColSelect
 for the “bunch” property. Pass an instance of your
DefaultCrudFieldFactory
 to the
CrudComponent
 (using a proper constructor or builder).

Here you got an example:

public class MyFieldFactory extends DefaultCrudFieldFactory {
	
	@Override
	public Field createCustomField(Object bean, Item item, String pid, Component uiContext, Class<?> propertyType) {
		Field field = null;
		
		if(User.class.isAssignableFrom(bean.getClass())) {
			if("bunch".equals(pid)) { // replace "bunch" whith your actual property name in the User class
				field = new TwinColSelect();
				// TODO: populate TwinColSelect with data
			}
		}
			
		return field;
	}
}

Hope this helps.

37

Any plans to port this add-on to Vaadin 7?

38

Not right now. But I will start working on that when Vaadin 7 becomes a realease version.

39

Hi, i got the problem when viewing the report and press the Refresh button. Here what i got from catalina’s log:

WARNING: Cannot serialize session attribute com.vaadin.terminal.gwt.server.WebApplicationContext for session 4AABF091BA1CC8168BB5DF1082B06E93
java.io.NotSerializableException: enterpriseapp.hibernate.DefaultSessionManager

Is it vaadin, jasper or other issue?

40

It’s look like something wrong with my environment. i tried a small vaadin project & jasper report. it still didn’t work. i have tried to change the enterpriseapp, lib, and jasper file. what i need is the enterprise app can show the report. I work with win7, netbeans 7.2, jdk 6, tomcat 7. does anyone ever meet the same problem?

41

Hi Agus.

I think this is just a warning when the server (Tomcat?) is serializing session instances on shutting down or starting up. This is not a problem unless you want to provide session serialization between restarts. Please provide me with the entire log and a screenshot so I can help you.

42

hi Hi Alejandro, I’d like to know which are the libraries that i need to run the enterprise-app
I
I

43

The required libraries are included inside the add-on package (/dependencies/). Hope this helps.

44

Now you can add Enterprise App using Maven:

<dependency>
   <groupId>org.vaadin.addons</groupId>
   <artifactId>enterprise-app</artifactId>
   <version>0.4.0</version>
</dependency>

<repository>
   <id>vaadin-addons</id>
   <url>http://maven.vaadin.com/vaadin-addons</url>
</repository>

I will start migrating to Vaadin 7 in a couple of weeks. Regards!

45

Alejandro,

This add-on is fantastic! It is exactly what my company needed to use to produce great reports for our client. Although I cannot get the scrollbars to display in a PrintViewReport. Do you know why this may be happening?

Thanks!

46

Hi Ben. It’s good to know that the add-on is useful for your company.

Scrollbars in PrintViewReport are an issue right now. I think it’s related to the fact that the “print preview” is being rendered as HTML generated by JasperReports instead of Vaadin. I was thinking about playing with CSS styles to solve it, but right now is not a priority (supporting Vaadin 7 is the main priority right now).

47

hi,all
i have a question…
enterpriseapp.example.widgetset.Enterprise_app_exampleWidgetset.nocache.js] not found from filesystem or through class loader. Add widgetset and/or theme JAR to your classpath or add files to WebContent/VAADIN folder.

thanks

48

Did you compile/recompile your widgetset?