diff audioDB.cpp @ 402:58b88ab69424 api-inversion

Move the struct adb definition from the auidioDB_API.h into the
audioDB-internals.h header file, leaving only the typedef behind.

Thus a user of the API sees only an incomplete type, which cannot be
instantiated (but /pointers/ to it can); there's then less temptation to
break the abstraction barrier by using structure fields in client code.

Not only that, but we can now safely put C++ stuff in the structure.
Take advantage of this by putting a std::set<std::string> in there, to
hold all the keys currently in the database; populate this field on
audiodb_open() (and delete it on audiodb_close).  This will be useful
when we come to implement variants of audiodb_insert().

--- a/audioDB.cpp	Wed Dec 03 14:53:20 2008 +0000
+++ b/audioDB.cpp	Wed Dec 03 17:40:15 2008 +0000
@@ -1,6 +1,7 @@
 #include "audioDB.h"
 extern "C" {
 #include "audioDB_API.h"
+#include "audioDB-internals.h"
 }
 
 LSH* SERVER_LSH_INDEX_SINGLETON;