Previously something like this would be logged if debugging is enabled:
davical: LOG: Principal: Query: DBGQ: SELECT * FROM collection WHERE user_no= :user_no
davical: LOG: Principal: Query: DBGQ: ":user_no" => ""
davical: BUG: :DAViCal Fatal Error: [42883] SQLSTATE[42883]: Undefined function: 7 ERROR: operator does not exist: integer = boolean\nLINE 1: SELECT * FROM collection WHERE user_no= FALSE\n ^\nHINT: No operator matches the given name and argument types. You might need to add explicit type casts. at /home/puck/work/Calendar/awl/inc/AwlDatabase.php:94
And this would be returned as a response:
DAViCal Fatal Error
user_no doesn't get set when construction the Collection for the external
bind, so, just handle that instead of sending the empty string to the
database as a user_no.
Modify the tests from ccc7e182ba4cbfba66a4fe96e1c0620e46390b95 to tickle the
bug.
Closes#175.
