NAME

DBIx::Class::Storage::DBI::NoBindVars - Sometime DBDs have poor to no support for bind variables

DESCRIPTION

This class allows queries to work when the DBD or underlying library does not support the usual "?" placeholders, or at least doesn't support them very well, as is the case with DBD::Sybase

METHODS

connect_info

We can't cache very effectively without bind variables, so force the "disable_sth_caching" setting to be turned on when the connect info is set.

_prep_for_execute

Manually subs in the values for the usual "?" placeholders.

This method is called by "_prep_for_execute" for every column in order to determine if its value should be quoted or not. The arguments are the current column data type and the actual bind value. The return value is interpreted as: true - do not quote, false - do quote. You should override this in you Storage::DBI::<database> subclass, if your RDBMS does not like quotes around certain datatypes (e.g. Sybase and integer columns). The default method returns false, except for integer datatypes paired with values containing nothing but digits.

 WARNING!!!

 Always validate that the bind-value is valid for the current datatype.
 Otherwise you may very well open the door to SQL injection attacks.

_prep_interpolated_value

Given a datatype and the value to be inserted directly into a SQL query, returns the necessary string to represent that value (by e.g. adding a '$' sign)

FURTHER QUESTIONS?

Check the list of additional DBIC resources.

COPYRIGHT AND LICENSE

This module is free software copyright by the DBIx::Class (DBIC) authors. You can redistribute it and/or modify it under the same terms as the DBIx::Class library.