lidavidm commented on code in PR #692:
URL: https://github.com/apache/arrow-adbc/pull/692#discussion_r1197963780
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adbc.h:
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@@ -667,6 +675,34 @@ struct ADBC_EXPORT AdbcDriver {
struct AdbcError*);
AdbcStatusCode (*StatementSetSubstraitPlan)(struct AdbcStatement*, const
uint8_t*,
size_t, struct AdbcError*);
+
+ /// \defgroup adbc-1.1.0 ADBC API Revision 1.1.0
+ ///
+ /// Functions added in ADBC 1.1.0. For backwards compatibility,
+ /// these members must not be accessed unless the version passed to
+ /// the AdbcDriverInitFunc is greater than or equal to
+ /// ADBC_VERSION_1_1_0.
+ ///
+ /// For a 1.0.0 driver being loaded by a 1.1.0 driver manager: the
+ /// 1.1.0 manager will allocate the new, expanded AdbcDriver struct
+ /// and attempt to have the driver initialize it with
+ /// ADBC_VERSION_1_1_0. This must return an error, after which the
+ /// driver will try again with ADBC_VERSION_1_0_0. The driver must
+ /// not access the new fields.
+ ///
+ /// For a 1.1.0 driver being loaded by a 1.0.0 driver manager: the
+ /// 1.0.0 manager will allocate the old AdbcDriver struct and
+ /// attempt to have the driver initialize it with
+ /// ADBC_VERSION_1_0_0. The driver must not access the new fields,
+ /// and should initialize the old fields.
+ ///
+ /// @{
+
+ /// Pad the struct to have 64 pointers. Space reserved for future
+ /// growth.
+ void* reserved[35];
Review Comment:
I'm going to add everything in this revision. I think what I'll actually do
now is update this PR with all the spec changes for C/C++ but without
implementations, then follow up with one PR per spec change for implementation
(ditto for Java, Go). And we can tweak the spec changes if we find something
during implementation that doesn't mesh.
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