| Key: |
SPR-1620
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| Type: |
Improvement
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| Status: |
Open
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| Priority: |
Major
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| Assignee: |
Unassigned
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| Reporter: |
alberto manjarrez
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| Votes: |
0
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| Watchers: |
1
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If you were logged in you would be able to see more operations.
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| Virtual Machine: |
Sun JVM
- 1.4
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| Platform: |
IBM WebSphere
- 5.1
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A common pattern on a factory is to have a "discriminator" (argument) in the creation method. For example:
createInstance(int type);
createInstance(String type);
createInstance(Locale locale);
This is used to determine which specific instance needs to be created. Hence the API of the FactoryBean shoul be extended to support something like:
getObject(Object arg) or getObject(Object[] args)
This of course will have to be propagated to other interfaces and classes. For example:
the AbstractFactoryBean createInstance should be extended to support createInstance (Object arg);
or the BeanFactory getBean should be extended to support getBean(String id, Object arg);
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Description
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A common pattern on a factory is to have a "discriminator" (argument) in the creation method. For example:
createInstance(int type);
createInstance(String type);
createInstance(Locale locale);
This is used to determine which specific instance needs to be created. Hence the API of the FactoryBean shoul be extended to support something like:
getObject(Object arg) or getObject(Object[] args)
This of course will have to be propagated to other interfaces and classes. For example:
the AbstractFactoryBean createInstance should be extended to support createInstance (Object arg);
or the BeanFactory getBean should be extended to support getBean(String id, Object arg);
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Show » |
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A factory that takes an argument 
The factory may create share instances or prototype.
Shared instance example:
- Consider a service to handle a request base on the Local (i.e. a different shared instance of the service should be located based on the Local)
- Another example is a handler service to handle a JMS message base on the message type or header
Prototype example:
- The creation of a translated data bean from the JMS Message type (i.e. JMS Message to domain object mapping. A new instance per received message)