On Fri, May 30, 2008 at 5:00 PM, Kiran Ayyagari <firstname.lastname@example.org> wrote:
Below is the summary which lead to the modification of put() and remove()/delete() method signatures in
Table and MasterTable.
Changed Interfaces :- The put() and remove() methods in Table and put() and delete() methods in MasterTable.
The context :- Implementation of a Berkeley DB JE based partition for ADS.
Reason for the change :- In the Jdbm based Table implementation put() and remove() operations return a value
cause JDBM returns the existing/previous values (like a HashMap) for put and remove
and these values are returned from the above mentioned operations.
But JE doesn't return these (existing/previous) values instead returns a special Enum
value stating the success or failure of the operation.
However I have observed that the return values of the existing put() and remove() methods are not used anywhere hence I made the above said change ( tested this by changing the interfaces and the respective implementations and ran all tests ( Note: no functional aspects of the implementations was touched except removing or replacing the *return* statements) )
P.S :- In the JE based implementation we can still return the previous/existing value but this requires a
lookup in each operation (put and remove) for storing the old value but this is not a desirable implementation.