Page level functionality is now tested and working. This includes the behaviour of the CheckPointer and the Log Writer although in the case of the latter the recovery process remains untested and uncharted waters!
Extensive debugging was been achieved since the installer classes were rewritten to emcompass the new class framework (the test harness utilising the installers was already in existence) and now the Buffer state-machine has been tested along side the asynchronous behaviour exposed by just about every buffer/page class available!
It's not been plain sailing though - the implementation of the Free Buffer Service had to ensure Data Page device buffers were marked transactional and log buffers were not... The Buffer state machine pattern also unearthed a number of peculiarities which caused the moving of some of the state switching logic and I also found out that the NestedContainer object does not forward calls to GetService to the owner component - so I had to write one that did in order to get my own proprietry routing chain to work!
Now that the Log Writer appears to be working - at least in an initial capacity (I've just had to changed the default log-page block size - it was far too large) my attention will now turn to initialisation of the primary data device and the setup of file-group primary devices which share more than a few attributes.
After that the real hard work begins!
Extensive debugging was been achieved since the installer classes were rewritten to emcompass the new class framework (the test harness utilising the installers was already in existence) and now the Buffer state-machine has been tested along side the asynchronous behaviour exposed by just about every buffer/page class available!
It's not been plain sailing though - the implementation of the Free Buffer Service had to ensure Data Page device buffers were marked transactional and log buffers were not... The Buffer state machine pattern also unearthed a number of peculiarities which caused the moving of some of the state switching logic and I also found out that the NestedContainer object does not forward calls to GetService to the owner component - so I had to write one that did in order to get my own proprietry routing chain to work!
Now that the Log Writer appears to be working - at least in an initial capacity (I've just had to changed the default log-page block size - it was far too large) my attention will now turn to initialisation of the primary data device and the setup of file-group primary devices which share more than a few attributes.
After that the real hard work begins!
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