use v6;

# Our exceptions
package X::DBDish {
    class DBError is Exception {
        has $.driver-name;
        has $.native-message is required;
        has $.code;
        has $.why = 'Error';
        method message {
            "$!driver-name: $.why: $!native-message" ~
                    ($!code ?? " ($!code)" !! '');
        }

        # Individual drivers are expected to override this to return true for
        # errors which may succeed if retried immediately.
        # Serialization failure, deadlocks, network disconnects, etc.
        method is-temporary {
            False;
        }
    }
    class ConnectionFailed is DBError {
        has $.why = "Can't connect";
    }

    class ConnectionInUse is DBError {
        has $.why = 'Unsupported Concurrency';
    }
}

role DBDish::ErrorHandling is export {
    has $.parent is required;
    has Bool $.PrintError is rw;
    has Bool $.RaiseError is rw;
    has Exception $!last-exception;

    method set-last-exception($e) {
        $!last-exception = $e;
        $!parent.?set-last-exception($e);
    }

    method err(--> Int)  {
        with $!last-exception {
            .?code || -1;
        }
        else { 0 }
    }

    method errstr(--> Str) {
        with $!last-exception {
            .message;
        }
        else { '' }
    }

    method driver-name(--> Str) {
        $ = do {
            self.^can('connect') ?? self.^name !! $!parent.driver-name;
        }
    }

    method reset-err(--> True) { self.set-last-exception(Nil); }

    method !error-dispatch(X::DBDish::DBError $_) is hidden-from-backtrace {
        self.set-last-exception($_);
        $!RaiseError and .throw or .fail;
    }

    method !set-err(Int $code, Str $errstr, Str :$error-class = 'X::DBDish::DBError') is hidden-from-backtrace {
        self!error-dispatch: ::($error-class).new(
            :$code, :native-message($errstr), :$.driver-name
        );
    }
}



head

A role that handles the errors from connection handles and statement handles


C<PrintError is rw>
Errors are printed to the standard error handle if this is True


C<RaiseError is rw = True>
Errors raise exceptions if this is True


errstr
Returns the string representation of the last error


!set_err
Private method that sets the error string, and prints and/or raises an
exception, depending on the C<$.PrintError> and C<$.RaiseError> flags.


!reset_err
Resets the error string to the empty string.


root

mysql

Connection

React

=begin React :component<HeaderCol> :id<menu> 
=para L<Documentation|/doc/introduction>
=para L<Modules| /mods>
=para L<Examples| file:../examples/index.podlite>
=para L<Download |file:../download/index.podlite>
=para L<About|file:../about/index.podlite>
=para 🔍 K<⌘K>/K<ctrl-K>
=end React


=begin React :component<HeaderCol> :id<footer>  
=begin nested :!nested
=item1 B<Language>
    =item2 L<Get started|file:../getting-started/getting-started.podlite>
    =item2 L<Why Raku?|/doc/language/faq#Why-should-I-learn-Raku-What's-so-great-about-it>
    =item2 L<Try Raku|https://glot.io/new/raku>
    =item2 L<Raku cheat sheet|https://github.com/Raku/mu/blob/master/docs/Perl6/Cheatsheet/cheatsheet.txt>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<Raku on Exercism|https://exercism.org/tracks/raku>
    =item2 L<Wikipedia|https://en.wikipedia.org/wiki/Raku_(programming_language)>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=begin nested :!nested

=item1 B<L<Documentation|/doc>>
    =item2 L<Getting started, Migration guides from other languages, & Tutorials | file:../doc/introduction.podlite>
    =item2 L<Language References|file:../doc/reference.podlite>
    =item2 L<Type Reference| file:../doc/types.podlite>
    =item2 L<Miscellaneous| file:../doc/miscellaneous.podlite>
    =item2 L<FAQs (Frequently Asked Questions)|/doc/language/faq>
    =item2 L<Community|/doc/language/community>
    =item2 L<The list of all documents|file:../doc/index.podlite>

=item1 B<Resources>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>

=end nested
=begin nested :!nested

=item1 B<Resoures>
    =item2 L<Download | file:../download/index.podlite>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=item1 B<Learning>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Wikibook |https://en.wikibooks.org/wiki/Raku_Programming>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>
    =item2 L<Learn Raku in Y minutes|https://learnxinyminutes.com/docs/raku/>
    =item2 L<Golfing |https://github.com/AlexDaniel/raku-golf-cheatsheet>
=end nested
=begin nested :!nested

=item1 B<Explore>
    =item2 L<Raku Blog Aggregator|https://planet.raku.org/>
    =item2 L<Rakudo Weekly|https://rakudoweekly.blog/>
    =item2 L<The Weekly Challenge |https://perlweeklychallenge.org/>
    =item2 L<Raku Advent Calendar|https://raku-advent.blog/>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=end React


=begin React :component<CookieConsent> :id<CookieConsent> :buttonCaption("Got it!")
=para
This website uses cookies for analytics.
=end React


ErrorHandling

role DBDish::Role::ErrorHandling

Attributes

`PrintError is rw` Errors are printed to the standard error handle if this is True

`RaiseError is rw = True` Errors raise exceptions if this is True

Methods

errstr Returns the string representation of the last error

!set_err Private method that sets the error string, and prints and/or raises an exception, depending on the `$.PrintError` and `$.RaiseError` flags.

!reset_err Resets the error string to the empty string.

DBIish v0.6.4

Authors

License

Dependencies

Test Dependencies

Provides

Documentation