The previous implementation expected to work with a context object that
contained a field `conn` that represented a valid database connection.
However, this required the caller to manage the connection's lifecycle
(close, renew, etc.). Now we expect to receive a context object that
provides a `withConn` procedure or template that accepts a statement
block and provides a `conn` variable to that code block. For example:
createRecord(db: DbContext): Record =
# withConn must be defined for DbContext
db.withConn:
# conn must be injected into the statement block context
conn.exec(sql("INSERT INTO..."))
In addition, this change provides a connection pooling mechanism
(`DbConnPool`) as a default implementation for this hypothetical
DbContext. There is also a new function `initPool` that will create an
DbConnPool instance.
Callers of this library can modify their DbContext objects to extend
DbConnPool or simply be a type alias of DbConnPool.
Recognize versions of timestamps with 'T' as the date/time separator.
For example, compare:
'2021-08-01 23:14:00-05:00'
'2021-08-01T23:14:00-05:00'
This commit adds support for the second flavor (and it's variations).
The previous fix for PostgreSQL timestamp fields matched fields with and
without timezones, but did not properly parse values from fields that
included the timezone. Now we check for the presence of the timezone in
the date string and choose a format string to parse it correctly.
