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[Jdbm-developer] Marking records as free
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From: Kevin D. <ke...@tr...> - 2005-08-27 15:07:57
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<DIV><FONT face=Arial>Some architectural
thoughts that just occured to me:</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Alex - instead of scattering
the NULL_RECID all over the place, what do
you think about adding two methods to RecordHeader:</FONT></DIV>
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<DIV><FONT face=Arial>boolean isFree()</FONT></DIV>
<DIV><FONT face=Arial>and</FONT></DIV>
<DIV><FONT face=Arial>void setFree()</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>?</FONT></DIV>
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<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>That way the mechanism
that the header uses to mark itself as free
can be completely encapsulated . I
still think that marking the length as -1
is a good approach, but the fact that we
are having such difficulty finding all the
code that needs to be updated is a good indication
that encpasulation has been violated.</FONT></DIV>
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<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>- K</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV></FONT></BODY></HTML>
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