################
package SQLtest;
################
use strict;
use warnings;
use lib  qw( ../lib );
use SQL::Statement;
printf "SQL::Statement v.%s\n", $SQL::Statement::VERSION;
our(@ISA,@EXPORT,$DEBUG,$parser,$stmt,$cache);
$cache = {};
require Exporter;
@ISA = qw(Exporter); 
@EXPORT = qw(&new_parser &parse &do_ &execute &fetchStr $parser $stmt);

sub new_parser{
  $parser = (@_) ? SQL::Parser->new(@_) : SQL::Parser->new();
}
sub parse {
    my($sql)=@_;
    eval { $stmt = SQL::Statement->new($sql,$parser) };
    warn $@ if $@ and $DEBUG;
    return ($@) ? 0 : 1;
}
sub do_ {
    my($sql,@params)=@_;
    @params = () unless @params;
    $stmt = SQL::Statement->new($sql,$parser);
    eval { $stmt->execute($cache,@params) };
    return ($@) ? 0 : 1;
}
sub execute {
    my @params=@_;
    @params = () unless @params;
    eval { $stmt->execute($cache,@params) };
    return ($@) ? 0 : 1;
}
sub fetchStr {
    my($sql,@params)=@_;
    do_($sql,@params);
    my $str='';
    while (my $r=$stmt->fetch) {
        @$r = map { defined $_ ? $_ : '' } @$r;
        $str .= sprintf "%s^",join'~',@$r;
    }
    $str =~ s/\^$//;
    return $str;
}
1;