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25 Commits

Author SHA1 Message Date
Jonas Schäfer d2b0ee057a Re-work the class hierarchy of cursors and transactions 
MDBRWTransaction now inherits from MDBROTransaction. Both
transaction types will free their cursors before aborting or
committing. In addition, transactions are now virtual classes.

The reason for this is that RW and RO transactions are handled
very differently in LMDB. Nevertheless, it is very useful to be
able to write read-only code in a way which also can use an RW
transaction. This saves code duplication or unnecessary templates.

Since the only methods which are reqiured to be virtual on
transactions for this to work are the destructor and the
abort/commit methods, the overhead should be neglegible.

This also comes in very handy when going forward to implement
nested transactions, because it is not possible to nest RO
transactions below RW transactions, exacerbating the issue
described above.

Fixes #7 en passant.
 2019-11-11 21:23:20 +01:00
bert hubert c0cc016f3a add get_struct_ptr for speedup 2019-06-24 11:16:03 +02:00
bert hubert 9c5bb43cb5 solve crashes when using read-only cursor 2019-01-13 21:35:02 +01:00
bert hubert 99b4caf61c enhance multi test a bit 2019-01-09 10:30:59 +01:00
bert hubert bdcd9150a9 unify RO and RW cursor operations, move serFromString to a view 2019-01-09 09:58:04 +01:00
bert hubert a6ee07d8ef add rc checking to cursors, add lower_bound(), next() 2019-01-05 14:38:52 +01:00
bert hubert cb2ed50e1f getKey for typed +const correctness 2019-01-04 20:51:04 +01:00
bert hubert f35ffb8bd8 fix boost version sensing 2018-12-28 22:02:29 +01:00
bert hubert 30b9a78059 adapt to older boost on travis 2018-12-28 19:14:00 +01:00
bert hubert 59b3b602fa lots of changes 2018-12-27 17:49:41 +01:00
bert hubert 654985e981 improve error message 2018-12-23 16:18:37 +01:00
bert hubert a144209f12 find, begin 2018-12-15 21:06:47 +01:00
bert hubert d98d657765 eradicate some MDB_dbi use, more string_view 2018-12-14 23:00:44 +01:00
bert hubert ac4876876e make MDBDbi a value type, improve some error messages, make a delete with no data part 2018-12-13 23:16:46 +01:00
bert hubert 3dd2f703db namespace cleanup, reennable support for c++2011 2018-12-10 22:08:49 +01:00
bert hubert 34f8c2188c better docs 2018-12-10 17:42:25 +01:00
bert hubert f15076bc2b make everything compile again 2018-12-10 15:02:36 +01:00
bert hubert 0a22c24024 big mdbval redo 2018-12-10 14:51:02 +01:00
bert hubert ac9da997a0 fix mixup with mode & flags parameters, implement transaction restart in case of resize 2018-12-10 10:27:07 +01:00
bert hubert 273c32435b add unreport, check errors better 2018-12-09 14:37:08 +01:00
bert hubert 2a8240cd1e improve error reporting, add mutex to database opening 2018-12-08 20:58:19 +01:00
bert hubert c40719f671 some docs, basic example 2018-12-08 14:08:26 +01:00
bert hubert e664945846 wip 2018-12-07 18:17:03 +01:00
bert hubert 9eafb01508 for hyc 2018-12-07 14:16:21 +01:00
bert hubert 8665a8bf08 interim 2018-12-07 13:52:17 +01:00