Pattern « Core « Spring Q&A





1. Runtime dependency injection with Spring    stackoverflow.com

My current project is leveraging Spring, and our architect has decided to let Spring manage Services, Repositories and Factory objects, but NOT domain objects. We are closely following domain driven design. ...

2. The decorator pattern and @Inject    stackoverflow.com

When using Spring's based XML configuration, it's easy to decorate multiple implementations of the same interface and specify the order. For instance, a logging service wraps a transactional service which wraps ...

3. Observer pattern implementation using Spring dependency injection    stackoverflow.com

I'm trying to develop an application where in the people will get notified if there is any change in the PartNumber. Its a Spring based application. Following is the code snippet. I've ...

4. How to efficiently implement a strategy pattern with spring?    stackoverflow.com

I have a web application developped in Java 1.5 with Spring framework. Application contains "dashboards" which are simple pages where a bunch of information are regrouped and where user can modify ...

5. Patterns for this type of problem    stackoverflow.com

I need advise regarding the pattern to use for the following problem. There are many rows -- let us call it messages(identified by MSG_ID in DB)-- in a table which corresponds to ...

6. Observer pattern    forum.springsource.org

7. Difference in patterns    forum.springsource.org

Hi, What is the difference between and are above both the same or ** says any jsps under any folder? Thanks in advance. ...

8. Please help me how to apply a Custom-Field pattern into my project    forum.springsource.org

Please help me how to apply a Custom-Field pattern into my project I'm developing a software which is based on OpenEMPI. This is a Spring+Hibernate application (with an EJB3 interface and ...

9. Look Mom #8: Screen Patterns    forum.springsource.org





10. Combining decorator pattern and spring    forum.springsource.org

Combining decorator pattern and spring Hi.. am just learning spring. I had a code written for decorator pattern example, and wanted to avoid 'new()' part of it and the if-else associated ...

11. Refactoring from Singleton Anti-Pattern to Dep Injection    forum.springsource.org

Refactoring from Singleton Anti-Pattern to Dep Injection Hi, I'm currently refactoring a large Swing application to use the Spring Framework. Unfortunately, the application currently makes heavy use of the Singleton "anti-pattern" ...

12. Wormhole pattern in spring ?    forum.springsource.org

Can you describe it. I do have that book, but it's in my office and I'm at home. And anyway, for the sake of other readers, it would be good to ...

13. Strategy pattern ?    forum.springsource.org

Strategy pattern ? Currently, I have : Transfert : to be sent by mail MailSenderManager : manage the sending of mail using JavaMailSender and MailSenderPreparator. JavaMailSender (Spring) : send mail with ...

14. Lookup table pattern    forum.springsource.org

Does anyone have advice (or know of a pattern) on implementing classes to represent lookup tables? We have a large number of simple id/name tables that I would like to cache ...

15. command pattern the easy way    forum.springsource.org

command pattern the easy way Please suggest the most harmonious way for me to implement a command pattern in spring. I want my tests/gui's to create a command. This could be ...

16. Standard pattern for adding parent + children?    forum.springsource.org

Standard pattern for adding parent + children? This is something I've done in Struts a couple of times but never felt I was doing it in a particularly elegant way, so ...





17. Spring strategy pattern    forum.springsource.org

Spring strategy pattern Hi, I am converting legacy application.which is struts based. I have a following workflow in my application. User can select a report and can generate the report in ...

18. Clusterable component pattern.    forum.springsource.org

Hi Does any one know how to make POJOs clusterable using spring? Do we need to still use EJBs for this or is there any new feature in Spring 2 to ...

19. pattern matching with question mark    forum.springsource.org

pattern matching with question mark hi all, here is a small snippet from my context file: CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON PATTERN_TYPE_APACHE_ANT /app?service?page/login=ROLE_ANONYMOUS /app**=ROLE_ADMIN,ROLE_MANAGER,ROLE_USER /**=ROLE_ANONYMOUS,ROLE_ADMIN,ROLE_MANAGER,ROLE_USE R the entry point path ...

20. How to apply Strategy Pattern using Spring?    forum.springsource.org

How to apply Strategy Pattern using Spring? Hello, I have the following situation (this example is pretty much like the one in the book "Head First Design Pattern"): //Interface Behavior interface ...

21. use of strategy pattern    forum.springsource.org

use of strategy pattern Hi, i'm making a program that creates documents.Each document has a number, but this number can be generated in 2 diferent ways. 1) the user enters the ...

22. Display Status after submit pattern    forum.springsource.org

Display Status after submit pattern Basic pattern... which is show a form populated with data. The user submits the form. And the page returns to the form saying "your data has ...

23. Simple search submission pattern    forum.springsource.org

Simple search submission pattern Hello, I'm looking to find best practices/design patterns related to building a simple search form that: 1) takes as input a query string using a view (JSP ...

24. What is this pattern?    forum.springsource.org

This is a little bit offtopic but please tell what you think if you have time to read this. Assume we have an employee: Code: class Employee { private int id; ...

25. Spring Strategy Pattern    forum.springsource.org

Spring Strategy Pattern Hi I have a problem in implementing Strtegy pattern in Spring this is what my sample of code : interface Predicate{ boolean valid(Object item); } class BiggerThanPredicate implements ...

26. Consider adding patterns to match schemas for AbstractValidatingInterceptor?    forum.springsource.org

Consider adding patterns to match schemas for AbstractValidatingInterceptor? Because I am using the XsdBasedSoap11Wsdl4jDefinitionBuilder class to define my web services, I have had to separate my input/output messages into separate files ...

27. what pattern to use to avoid lot of if, else in the code    forum.springsource.org

I have a few "if" "else" conditions in the code. This piece of code is very volatile and may change in future (add more if, else or remove a few). what ...

28. Master / Worker Pattern & jvm    forum.springsource.org

Master / Worker Pattern & jvm Hi, 1 ) Question concerning master/worker pattern I would like to know if Spring batch implement the Master/Worker pattern which is currently used to parrallelizing ...

29. Spring usage pattern question    forum.springsource.org

Spring usage pattern question Hello, Let's say we have a case where we have our entire application wired together and a single invocation of the Spring container is done in the ...

30. What are the difference between dependency injection and Decorator Pattern?    forum.springsource.org

I think you are mixing up things here, Dependency Injection has nothing to do with Decorator pattern. DI: Inject dependencies in your beans (instead of locating them inside the bean) using ...

31. codec implementation pattern using DM    forum.springsource.org

codec implementation pattern using DM I wish to setup a Spring DM service, codecservice, that tracks "codecs." The codecs maintain state and perform actions for the service. I want to declare ...

32. Questions about dividing scaling patterns into single or multiple processes    forum.springsource.org

Questions about dividing scaling patterns into single or multiple processes From the SpringBatch 2.0 Guide: "At a high level there are two modes of parallel processing: single process, multi-threaded; and multi-process. ...

33. Rounting Slip pattern    forum.springsource.org

Hi everyone, I need to implement the routing slip pattern. I cannot figure out how can I do it with the standard SI schema. I'm afraid this is impossible with the ...

34. execution Pattern Matching    forum.springsource.org

I have HTML Code: @Aspect public class AddressUtil { @Before("execution(public * AddressUtil.convertToAddress(..))") public boolean lengthCheck2() { System.out.println("lengthCheck2()"); return true; } public MyAddress convertToAddress(String line) { System.out.println("convertToAddress(String line)"); } } @Before("execution(public * ...

35. Pattern matching for private methods    forum.springsource.org

Hello, I have something like this @Before ("execution (* com.xyz.spring2.demo.service.impl..*(..)) and args(order,..) )") but it doesn't work for private methods. only for publics which defined in interface. But I use CGLIB ...

36. limitations of OSIV pattern?    forum.springsource.org

limitations of OSIV pattern? I have been using Seam framework with JSF/JPA/Hibernate for over 2 years now. I am now learning Spring 2.x and coming up to speed on basic concepts. ...

37. versioning tables pattern - what is the best, non-bloat way?    forum.springsource.org

versioning tables pattern - what is the best, non-bloat way? Hi, I have a problem that is probably pretty common. I have 8 tables in a database of 70, all connected ...

38. encapsulation pattern to abstract common logic    forum.springsource.org

encapsulation pattern to abstract common logic what's best encapsulation pattern to use to abstract out common logic. e.g. have a child class say Code: ClassA implements Interface{ public void search(Form form){ ...

39. ClaimCheck pattern    forum.springsource.org

ClaimCheck pattern I am struggling with the following problem: Input message contains a few common attributes and an array of millions of records. I have to split and filter out the ...

40. Exactly URI pattern matching    forum.springsource.org

Exactly URI pattern matching Hi, Im using Spring 3.0 to rewrite existing application. However, Im having some problems with appropriate handler mappings. I have defined the following controllers: Code: @Controller public ...

41. Tokenizer - Is there anything to consider a recurrent pattern in a single line    forum.springsource.org

I want to process flat files containing lines with a basic fixedLength pattern. The problem is there's no line separator/carriage return between the records. Is there any facility in Spring Batch ...

42. Problem with springSecurityFilterChain Pattern    forum.springsource.org

Use the second configuration, since that works. If the "spring_security_login" request is omitted from the filter chain, then there will be nothing to render the login page, hence you will get ...