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author | louiz’ <louiz@louiz.org> | 2018-04-10 23:33:59 +0200 |
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committer | louiz’ <louiz@louiz.org> | 2018-04-11 00:25:18 +0200 |
commit | 857c7d3972a03cbeebf730d99b924d3710dee6a0 (patch) | |
tree | 5bf1ed66ba7ddda3f16a470115cf364a8c7a10cb /src/database/datetime_writer.hpp | |
parent | 0cd848e532c8c60ed4f3a5d1e6a3850929f2765b (diff) | |
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Use a different Date data type
PLEASE backup your database before testing this commit, and report any
migration issue.
In postgresql, we use timestamp with timezone.
In sqlite3 we use REAL (the date is expressed as julianday)
This requires a migration of the muclogline_ table:
In postgresql it’s pretty simple, we convert all the integer into timestamps
With sqlite3, we actually rename the table, create the new one with the
correct type, then copy everything to the new table, with a conversion
function for the Date_ column, and then we delete the old table.
fix #3343
Diffstat (limited to 'src/database/datetime_writer.hpp')
-rw-r--r-- | src/database/datetime_writer.hpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/database/datetime_writer.hpp b/src/database/datetime_writer.hpp new file mode 100644 index 0000000..b104911 --- /dev/null +++ b/src/database/datetime_writer.hpp @@ -0,0 +1,32 @@ +#pragma once + +#include <utils/datetime.hpp> +#include <database/engine.hpp> + +#include <logger/logger.hpp> +#include <database/postgresql_engine.hpp> +#include <database/sqlite3_engine.hpp> + +class DatetimeWriter +{ +public: + DatetimeWriter(DateTime datetime, const DatabaseEngine& engine): + datetime(datetime), + engine(engine) + {} + + long double get_value() const + { + const long double epoch_duration = this->datetime.epoch().count(); + const long double epoch_seconds = epoch_duration / std::chrono::system_clock::period::den; + return this->engine.epoch_to_floating_value(epoch_seconds); + } + std::string escape_param_number(int value) const + { + return this->engine.escape_param_number(value); + } + +private: + const DateTime datetime; + const DatabaseEngine& engine; +}; |