singleton « Bean « Spring Q&A





1. Spring - singleton problem - No bean named '....' found    stackoverflow.com

Hey, I can't figure out what is wrong with this beans definition. I'm getting this error http://pastebin.com/ecn5SWLa . Especially the 14th log message is interesting. This is my ...

2. Unit testing with Spring framework singleton beans    stackoverflow.com

It’s a general consensus that Singleton is bad for unit-testing. But what about having an IoC container like the Spring framework to control your beans which are singletons by default? Is using ...

3. Plain old singleton or spring singleton bean?    stackoverflow.com

I have a service in my application which is a singleton. My application is being bloated with the use of spring framework. I am confused over to use the singleton service as 1: Plain ...

4. Applet singleton spring beans problem    stackoverflow.com

I have a java application using Spring. Spring beans are singletons. When I deploy the application as an applet, and user opens in different tabs of browser, the application instances share ...

5. correct way of making a singleton a spring bean    stackoverflow.com

I am converting a singleton to a spring bean, so that if the singleton fails to initialize, then entire web application's spring context doesn't load properly. The advantage of making the ...

6. spring singleton bean construction    stackoverflow.com

I'm new on spring and I want a spring singleton bean to be created when the web application starts, not when it is referenced. Is there a way to achive this? Thanks ...

7. Singleton bean created twice?    forum.springsource.org

Singleton bean created twice? Hello! I experience a very strange behaviour at application startup, for which i do not find an explanation. I have a singleton bean defined in the application ...

8. Trouble getting non-singleton beans.    forum.springsource.org

Trouble getting non-singleton beans. Hello All, I'm not sure if it's just gotten too late at night and I can't think straight, but I'm having a problem getting non-singleton beans from ...

9. injecting a mangedbean into a singleton bean    forum.springsource.org

injecting a mangedbean into a singleton bean I have two singleton beans of which one is a managed bean, A and other bean B B has a dependency to A , ...





10. how to deal with the problem new window and singleton bean ?    forum.springsource.org

how to deal with the problem of open new window and singleton bean ? usually,the orignial window became gray.how to decided where and where to use bean management of implemented bean? ...

11. Singleton bean creation slow in 1.2-RC2    forum.springsource.org

Singleton bean creation slow in 1.2-RC2 Hi, Are other people experiencing an increase in the time required to instantiate simple beans with the new upgrade to 1.2-RC2? It is now taking ...

12. Spring re-creates singleton beans    forum.springsource.org

Spring re-creates singleton beans Hi, our application uses Spring 1.2.2 and struts. To use struts you need to define org.springframework.web.struts.ContextLoaderPlugIn as a struts plugin. What I found debugging through the Spring ...

13. If a Bean is Non Singleton, beans inside it inherits this?    forum.springsource.org

If I create a bean with Singleton="False", beans created to put in some parameters of this beans become Non.Singleton too? I want to get a new and fresh bean from the ...

14. Referring to same non-singleton bean twice    forum.springsource.org

Referring to same non-singleton bean twice Consider the following: Is there a mechanism in Spring to assign ...

15. problem : recreation of singleton beans    forum.springsource.org

problem : recreation of singleton beans My application recreate the singleton beans. I have a web application with an applicationContext (applicationContext.xml) in /WEB-INF and another applicationContext (springConfig.xml) in a jar file. ...

16. singleton beans as cache    forum.springsource.org

singleton beans as cache hi all; i have an application where data is changed only by an admin and its not crucial to see the change immediatly. what i did is ...





17. concurrence issue of singleton bean    forum.springsource.org

concurrence issue of singleton bean Please have a look a the following tomcat trace. The "Pre-instantiating singletons" mean that the whole application only exist one paymentGateway bean is it? If it ...

18. Non-singleton beans and application events    forum.springsource.org

When using a non singleton bean that implements the ApplicationListener interface, do ApplicationEvents get sent to all instances of the said bean ? (I'm having a problem where only one of ...

19. Sharing the same non-singleton object between to managed beans    forum.springsource.org

Sharing the same non-singleton object between to managed beans Hi there, I am trying to separate some services (business from transport/host), but need to keep a piece of information that for ...

20. Singleton - updating bean in app context fails    forum.springsource.org

Singleton - updating bean in app context fails I have an spring context file which is loaded in by a class (reads in the bean by adding the xml files to ...

21. Creating beans using singleton="false"    forum.springsource.org

Creating beans using singleton="false" Hi, I am relatively new to spring and am working with a struts-spring-hibernate-mysql application. All the action beans have been set to singleton="false", but currently the transactional ...

22. How to wire single-copy of non-singleton bean?    forum.springsource.org

How to wire single-copy of non-singleton bean? I have two classes, both non-singleton (they are session-dependent): Calculator and Resource. Now I want Controller to initialize Resource, so I set Resource as ...

23. singleton declaring beans question    forum.springsource.org

hi, declaring a bean in the applicationconfig.xml the "singleton" property default value is "true". Isn't it a potential performace bottleneck in a J2EE application with a web based frontend with many ...

24. singleton bean with transactrion problem    forum.springsource.org

singleton bean with transactrion problem Hi, Hi I am new to spring and I am having problems with a singleton bean that needs to have declerative transaction. For example: I am ...

25. All my beans are singletons    forum.springsource.org

All my beans are singletons Here's my bean definition: However, here's a line I get when I turn the logging level up on spring: 21/12/06 02:27 ...

26. Question about Non-Singleton Beans - best method?    forum.springsource.org

Question about Non-Singleton Beans - best method? Is there a best practices to dealing with non-singleton beans? Also, I just typed this into the screen so pardon any typos or incomplete ...

27. Need Modifiable State in Singleton Bean    forum.springsource.org

Need Modifiable State in Singleton Bean I have a requirement to maintain state in memory within a web application. The state needs to be shared among HTTP sessions. Although this can ...

28. @PersistenceContext into singleton beans    forum.springsource.org

Hi, in a j2ee environment (glassfish 2), putting @PersistenceContext into singleton dao implementations (they need to be singleton right?), do I obtain a thread safe EntityManager? Reading Hibernate Jpa documentation it ...

29. Why spring beans are Singleton by default?    forum.springsource.org

Why spring beans are Singleton by default? I have a basic question, may be I am missing here something. To my understanding the Spring beans are singleton by default. This is ...

30. Singleton beans instantiated multiple times    forum.springsource.org

Singleton beans instantiated multiple times I'm seeing beans that are marked as singletons being instantiated multiple times and I can't figure out why. I'm using the custom XML schema based configuration ...

31. TimerTask bean is not singleton    forum.springsource.org

TimerTask bean is not singleton Hello everybody, When i start my application i start a timertask which check if all jobs are still running: Code:

32. Newbie: Why are Spring beans singletons?    forum.springsource.org

Complete newbie question: I don't understand why spring beans are singletons by default. I thought singletons are primarily used to store unchanging data, such as config data, jndi lookup values, etc. ...

33. Singleton bean configuration    forum.springsource.org

Hi all, I am new to the Spring framework. I would appreciate if someone can answer some basic questions: - How to configure a singleton bean (class) in Spring's applicationContext.xml file? ...

34. Ho to make non singleton bean    forum.springsource.org

Hi I am using spring in my project, i want to make my bean as non singleton. I made sigleton="false" in my xml configuration also. DTD version is "http://www.springframework.org/dtd/spring-beans.dtd" Can any ...

35. get a singleton bean from non-singleton bean    forum.springsource.org

get a singleton bean from non-singleton bean Hi My non singleton bean (set singleton=false) implements BeanFactoryAware interface, so I have: private BeanFactory beanFactory; public void setBeanFactory(BeanFactory beanFactory) throws BeansException { this.beanFactory ...

36. singleton in beans    forum.springsource.org

singleton in beans Hi I am new spring concept!!! I have been learning about the spring IOC I got one doubt regarding singleton in spring. we can configure one class as ...

37. Singleton bean added to InternalResourceViewResolver..    forum.springsource.org

Singleton bean added to InternalResourceViewResolver.. Hey All, I am new to spring and trying to the best as I can to remember all terminology, but having fun so far. I created ...

38. Is correct in Singleton beans to have attr. that should hold diff values    forum.springsource.org

Is correct in Singleton beans to have attr. that should hold diff values It is correct to write a code like the one below, I have a singleton bean (attribute singleton ...

39. Spring Singleton and Garbage Collection    forum.springsource.org

Spring Singleton and Garbage Collection I am trying to understand how garbage collection works with Spring Singletons, and if the problem I am having is at all related to spring. Below ...

40. Way too many singleton beans created    forum.springsource.org

Aug 20th, 2009, 02:58 PM #1 BrandonY View Profile View Forum Posts Private Message Junior Member Join Date Dec 2008 Posts 20 Way too many singleton beans created I've run into ...

41. Singleton bean    forum.springsource.org

Hi all, I am wondering if Spring singleton instances are thread safe ( i.e. calls to the same method do not overlap ) .. If not, shall I avoid this using ...

42. Unable to inject Protoype beans into a singleton bean via     forum.springsource.org

Unable to inject Protoype beans into a singleton bean via I I'm using Restlet framework and using Spring 2.56 for creating beans. Code:

43. Register programmatically created singleton beans in osgi registry?    forum.springsource.org

In continuation of my other thread to programmatically create spring beans and register them with spring context for a bundle, I am able to work around using registerSingleton api available in ...

44. Singleton bean instantiation    forum.springsource.org

Singleton bean instantiation HI, I have one service class which is used by some validator classes. This service class is a singleton and validator classes have dependency on it. When the ...

45. what is a singleton bean ?    forum.springsource.org

here is a tutorial .. Beans defined in spring framework are singleton beans. There is an attribute in bean tag named singleton if specified true then bean becomes singleton and if ...

46. Issue with Singleton when using multiple Context in a single beanfactory.    forum.springsource.org

Issue with Singleton when using multiple Context in a single beanfactory. Hi, ================================================== ======= core-diag-test-config.xml ...

47. Creating beans using singleton="true"?    forum.springsource.org

Creating beans using singleton="true"? Dear All, I am using spring-mvc in our bank application.I have very basic question about create an instance in my request.I have 1 instance of the "myAccountsService","MyAccountHandler"and ...

48. Creating beans using singleton="true"?    forum.springsource.org

Creating beans using singleton="true"? Dear All, I am using spring-mvc in our bank application.I have very basic question about create an instance in my request.I have 1 instance of the "myAccountsService","MyAccountHandler"and ...

49. Question about Spring singleton Bean    forum.springsource.org

Hi, By default are Spring's beans all singleton, but what about the situation, the bean may be blocked, for example read something from a remote database, the bean must wait for ...