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Class Factory

 
Greenhorn
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I need to create a CF(class factory). The CF should store references (probably in a Map). When the method is called the CF should check is a reference is available, if yes, it should return the reference to the client else create a new instance, store in the Map (for subsequent requests) and return a reference to the client. Is this a feasible? My concern is what happens when 2 clients get reference to the object at the same time. When both the clients call methods on the object will it cause a problem since both the clients are using the same object reference,
Thanks,
Tanner
 
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Well, then one option is to have a pool of instances rather than just one. Your clients can then return the instances to the pool when they are finished with them.
Kyle
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Kyle Brown,
Author of Enterprise Java (tm) Programming with IBM Websphere
See my homepage at http://members.aol.com/kgb1001001 for other WebSphere information.
 
Ranch Hand
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"Tanner"
Your name does not agree with the Javaranch guidelines.Please take a moment and re-register after reviewing the guidelines available here
Thank you for your cooperation.We look forward for your contribution in the forum after registering as per Javaranch guidelines.
Best Regards,
Sandeep
[This message has been edited by Desai Sandeep (edited November 07, 2001).]
 
Greenhorn
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Perhaps you want only one reference/object, if that's the case you can synchronize the method or block of code returning the reference. If you create a pool or collection of instances, then you have to know when all instances are 'dereferenced' or not required anymore (I guess keep a count of how many instances have been created)
 
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