DataFileAccessorPool

Use case:

1. Get a data file accessor from the pool for file 1
2. Since its the first time a data file accessor is requested for file1, a pool will be created for it.
3. The file is opened  in R/W mode
4. Since the the data file accessor created is not closed yet, any further requests will create more file handlers in R/W mode.
5. On closing the data file accessor, instead of actually closing the file handler, the accessor will return to the pool
6. Any further request for the accessor, will not creating new one and instead will use the accessor from the pool.

 

A pool of data accessors