concurrency « Thread « Spring Q&A





1. Do I need to worry about concurrency with tomcat spring beans?    stackoverflow.com

Not quite understanding enough about java, do I need to worry about concurancy issues when listing, and changing DTO objects in my spring java beans in a single server tomcat application? ...

2. daemon threads in an app container    stackoverflow.com

I read in a post to the Smack forum recently that

Starting daemon threads in a Java EE server is a big no no
Basically Smack's XMPPConnection starts ...

3. Can you use Future/Futuretask objects with Spring TaskExecutors?    stackoverflow.com

Is it possible to use Java FutureTask with a Spring TaskExecutor to get a Future object? I'm looking for a TaskExecutor that implements the Java

4. Should I put my ThreadLocals in a spring-injected singleton?    stackoverflow.com

Several people (eg at serverside http://www.theserverside.com/news/thread.tss?thread_id=41473) suggest that using ThreadLocal objects is as bad as using global variables. I imagine this is true if you make them public static variables. The problem ...

5. Spring.Net how does WebApplicationContext.GetObject handle concurrent requests?    stackoverflow.com

Apologies if I have missed something obvious here but having gone through the documentation, forums and googled for a number of hours, I just can't find a definitive answer to the ...

6. How can I return a Future object with Spring without writing concurrency logic?    stackoverflow.com

How can I return a java.util.concurrent.Future object with a Receipt object and only use the @javax.ejb.Asynchronous annotation? And do I need any extra configuration to let Spring handle ejb annotations? I don't want ...

7. Is Spring's ThreadPoolTaskExecutor blocking something?    stackoverflow.com

We are using the ThreadPoolTaskExecutor within Spring (inside of Tomcat) to launch a concurrent server which listens on a port (3001). Our code looks a bit like:

      ...

8. Spring ObjectPooling & thread blocking    stackoverflow.com

I have a Spring CommonsPoolTargetSource defined for a bean. I'm trying to understand how pooling works, and when an object is returned the the pool. Specifically, if I have a worker, ...

9. Can I use @Async annotation with Grails    stackoverflow.com

As per the following spring doc link I can use @Async annotation to make a method call asynchronous. Can I use this facility in Grails from a java src ...





10. Is this design of Spring singleton beans thread safe?    stackoverflow.com

Consider the following Spring Service class. The spring scope defined is Singleton. The two service beans auto-wired as fields in the class below have similar structure - they too are composed ...

11. Is there a way to poll an array of Future objects in spring as in ExecutorCompletionService?    stackoverflow.com

I am using the @Async annotation on one of my functions and that function returns a Future<integer> object. The method is called a few times and the results are put in a ...

12. How to make jsp spring application thread safe?    stackoverflow.com

I have a jsp application (using Spring) that uses a couple of global variables. I need multiple people to be able to use this program concurrently, however. What is the best ...

13. Spring version of java.util.concurrent.ScheduledThreadPoolExecutor    stackoverflow.com

I want to run some threads simultaneously which executes a given runnable task at regular intervals. Each thread will have its own instance of Runnable task. I found out java.util.concurrent.ScheduledThreadPoolExecutor which seems ...

14. how Does spring singleton bean behave for single method calls by multiple clients at same time?    stackoverflow.com

By spring docs I found by default spring beans are singletons. How will spring behave if it has a doSomethingMethod() { ... } and this method is being called ...

15. jboss 6 spring camel and concurrentConsumers    stackoverflow.com

I have a problem getting concurrency to work. I have a simple route set up as follows in spring under jboss 6:

<bean id="atest" class="com.easymed.notificationsManager.core.SimpleTest"/>

<jee:jndi-lookup id="connectionFactory" jndi-name="java:JmsXA"/>

<camelContext id="camel" xmlns="http://camel.apache.org/schema/spring">
    <template ...

16. Concurrency and WebFlow Action Beans    stackoverflow.com

In our web application we are using Spring WebFlow 1.0.1. So naturally we also use Action beans, FormAction beans to be specific. I was in the process of investigating a ...





17. What is the purpose of TaskExecutor in spring?    stackoverflow.com

What is the purpose of TaskExecutor in spring. What problem does it solve ? How is it different from Executors in java concurrent package ?

18. concurrency control problem    forum.springsource.org

concurrency control problem hi, i'm new with spring security and jsf. i've built login form with jsf. here's LoginBean: Code: package org.rmd.pages.login; import javax.faces.application.FacesMessage; import javax.faces.context.FacesContext; import javax.inject.Inject; import javax.inject.Named; import ...

19. Concurrency control    forum.springsource.org

Concurrency control Hi, I want to implement concurrency control in my app. I'm using Flex hence I'm using Spring BlazeDS Integration 1.5.0M2 as well as Spring Security 3.0.5. This is part ...

20. Inbound channel adapter - task executor - concurrency    forum.springsource.org

Hi, If i use inbound channel adapter with a poller, and the actual channel is direct channel, what will happen if one event takes some time to complete and another poll ...

21. Better concurrency support for MapRepository    forum.springsource.org

Better concurrency support for MapRepository Hi, I observe in the forum that more and more people would find very handy to have a better concurrency support for the MapRepository implementation, as ...

22. concurrency problem using direct channel with http inbound gateway    forum.springsource.org

Hi Can anyone please explain the difference between direct channel and threadscopechannel? Trying to use direct channel for a HTTP inboud gateway with further processing and integrating to JMS outbound gateway ...

23. Spring + concurrency ????    forum.springsource.org

This is not a problem of Spring. If you make your services stateless, then all concurrency control can be done by using Transactions. But what do you need? I do a ...

24. advice on improving concurrency in application?    forum.springsource.org

advice on improving concurrency in application? Hi folks, I'm currently working on a application that has to read files from a directory, parse the xml and then write the resultant information ...

25. concurrency notification to UI - concurrencythrottleinterceptor    forum.springsource.org

concurrency notification to UI - concurrencythrottleinterceptor hi, If I need to throw back a error message to UI that currently "this operation is in progress. Please try after some time", Will ...

26. Concurrency problem with transparent caching in 0.2    forum.springsource.org

Concurrency problem with transparent caching in 0.2 I posted this to the spring-modules mailing list about a week ago but didn't get any replies. Trying the forums instead... Hi, I'm currently ...

27. Concurrency problem on read values    forum.springsource.org

Concurrency problem on read values Hi, I have this situation: I must save instances of a "generic class" with sequencial id. Example: Obj1 with id 1 Obj2 with id 2 etc. ...

28. catching concurrency exceptions    forum.springsource.org

I have a case where I'm using toplink and spring. In my toplink DOA it's possible that a concurrency exception gets thrown due to the way I'm registering objects with a ...

29. Concurrency problem    forum.springsource.org

Concurrency problem I have documents called ExpedientesAdministrativos, each of them has a number th that identifies the document.(these are encapsulated in a class called Codigo). This numbers or Codigos are generated ...

30. Concurrency throttling by default?    forum.springsource.org

Concurrency throttling by default? Hello, I have an issue that I can't seem to put a finger on. I am relatively new to Spring and am not using much more than ...

31. JDK 5 generic type & concurrency programming    forum.springsource.org

I am leaning concurrency programming in jdk 5, and ran into trouble with Executor framework, actually, it's a generic type problem. I want to use Executor.invokeAll to execute a collection of ...

32. Business Object Concurrency    forum.springsource.org

Business Object Concurrency Hi all, I'm planning to use spring with Echo2 as the front end. I have already seached the web and haven't found any interesting articles of how to ...

33. concurrency help needed    forum.springsource.org

concurrency help needed Hi, let me try to describe the situation. The code looks like: Code: A a = hibernateTemplate.find("FROM a WHERE a.aId NOT IN (SELECT b.a.aId FROM b) AND ..."); ...

34. concurrency handling shcemes    forum.springsource.org

concurrency handling shcemes Hi, i'm new to spring and web application and i need some help in handling concurrency in my application. I 'll describe the problem: I have a table ...

35. Concurrency support of spring component in web logic container    forum.springsource.org

We are building multiple spring beans using spring framework. We would deploy spring container inside web logic. What should we do so that we would have concurrency support for individual spring ...

36. Singleton beans and concurrency    forum.springsource.org

Singleton beans and concurrency I have read a post about it but I didn't find the anser to my doubt. Let me explain you the scenario with a very very stupid ...

37. cache & concurrency    forum.springsource.org

cache & concurrency Hi, I've been using springmodules for a few years now and it's working great, thanks to all contributors! My problem is with CacheProxyFactoryBean and concurrency. If I hit ...

38. Help with optimistic concurrency    forum.springsource.org

Help with optimistic concurrency Hi. We are trying to get optimistic concurrency setup on a project that use JSF, Spring and Hibernate. We've added a version field (INTEGER) to our database ...

39. HTTP invoker concurrency questions    forum.springsource.org

Dears, I'm a new guy to the Spring, and now i plan to use the HTTPInvoker mechanism as a communication channel between two spring applications-Server and client, The Server may support ...

40. Spring and concurrency...    forum.springsource.org

Hello, Say I have one java object i.e. a Spring singleton. Assume one of the methods in the singleton is NOT synchronized. Can concurrency problems occur? Do I have to synchnonize ...

41. Springs concurrency API    forum.springsource.org

Springs concurrency API Hi, We need to use concurrent threads in our application. We are using Weblogic 9.2 as the application server and using Spring 2.5 as IoC container. I was ...

42. Concurrency control in Custom ProviderManager    forum.springsource.org

Keep in mind that if you have the anonymous filter in place, the getCredentials() call will return "" for the credentials. Is that what's happening?

43. Possible bug with concurrency-control in new 3.0 release?    forum.springsource.org

Possible bug with concurrency-control in new 3.0 release? Possible bug with concurrency-control in new 3.0 release? Before I switched to new release concurrency-control feature works great, but after I switched - ...

44. Concurrency control by computed property    forum.springsource.org

Hello all, We need to still using the concurrency control in projects that have a preexistent database and we can't modify structure it. So we are thinking about using a hash ...

45. Spring3 Concurrency Control    forum.springsource.org

Spring3 Concurrency Control I'm having trouble setting up concurrency control using Spring3. When i looked into the ConcurrentSessionFilter's doFilter method it has this method and somehow the info is null and ...

46. Concurrency Control not working    forum.springsource.org

Concurrency Control not working Hi, Please see my security-context.xml and let me know if i missing anything. It still doesnt invalidate the previous session if i login the 2nd time. Your ...

47. script-concurrency error?    forum.springsource.org

Mar 16th, 2010, 06:01 PM #1 BruceBGordon View Profile View Forum Posts Private Message Junior Member Join Date Mar 2010 Posts 8 script-concurrency error? When I run a script in STS ...

48. Concurrency suggestions    forum.springsource.org

Concurrency suggestions Hi all, Ok, so I have 2 identical inbound adapters as below. Currently, they both grab the same record to process and I end up with duplicate processing records. ...

49. Confusion on concurrency in Listener template    forum.springsource.org

Confusion on concurrency in Listener template Hi, I have few confusion. I will really appreciate if someone correct me. A) In Spring messaging, we have 2 things 1) JMS Listener Container ...

50. concurrency-control + remember-me?    forum.springsource.org

concurrency-control + remember-me? Hello, Still trying to get Spring Security working after migrating from Acegi. I've configured both concurrency-control + remember-me as follows: Code:

51. concurrency problem with unique property generation    forum.springsource.org

concurrency problem with unique property generation In my application, I have one entity A, it has one property such as "serialNumber" and this property should always be unique in database. Everytime ...

52. Concurrency control not working?    forum.springsource.org

If you are using a completely external SessionAuthenticationStrategy, then you need to also inject it into the form-login filter. See the manual. The configuration you have should work with the namespace ...