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package FS::dbdef_column;
use strict;
#use Carp;
use Exporter;
use vars qw(@ISA);
@ISA = qw(Exporter);
=head1 NAME
FS::dbdef_column - Column object
=head1 SYNOPSIS
use FS::dbdef_column;
$column_object = new FS::dbdef_column ( $name, $sql_type, '' );
$column_object = new FS::dbdef_column ( $name, $sql_type, 'NULL' );
$column_object = new FS::dbdef_column ( $name, $sql_type, '', $length );
$column_object = new FS::dbdef_column ( $name, $sql_type, 'NULL', $length );
$name = $column_object->name;
$column_object->name ( 'name' );
$name = $column_object->type;
$column_object->name ( 'sql_type' );
$name = $column_object->null;
$column_object->name ( 'NOT NULL' );
$name = $column_object->length;
$column_object->name ( $length );
$sql_line = $column->line;
$sql_line = $column->line $datasrc;
=head1 DESCRIPTION
FS::dbdef::column objects represend columns in tables (see L<FS::dbdef_table>).
=head1 METHODS
=over 4
=item new
Creates a new FS::dbdef_column object.
=cut
sub new {
my($proto,$name,$type,$null,$length)=@_;
#croak "Illegal name: $name" if grep $name eq $_, @reserved_words;
$null =~ s/^NOT NULL$//i;
my $class = ref($proto) || $proto;
my $self = {
'name' => $name,
'type' => $type,
'null' => $null,
'length' => $length,
};
bless ($self, $class);
}
=item name
Returns or sets the column name.
=cut
sub name {
my($self,$value)=@_;
if ( defined($value) ) {
#croak "Illegal name: $name" if grep $name eq $_, @reserved_words;
$self->{'name'} = $value;
} else {
$self->{'name'};
}
}
=item type
Returns or sets the column type.
=cut
sub type {
my($self,$value)=@_;
if ( defined($value) ) {
$self->{'type'} = $value;
} else {
$self->{'type'};
}
}
=item null
Returns or sets the column null flag.
=cut
sub null {
my($self,$value)=@_;
if ( defined($value) ) {
$value =~ s/^NOT NULL$//i;
$self->{'null'} = $value;
} else {
$self->{'null'};
}
}
=item type
Returns or sets the column length.
=cut
sub length {
my($self,$value)=@_;
if ( defined($value) ) {
$self->{'length'} = $value;
} else {
$self->{'length'};
}
}
=item line [ $datasrc ]
Returns an SQL column definition.
If passed a DBI $datasrc specifying L<DBD::mysql> or L<DBD::Pg>, will use
engine-specific syntax.
=cut
sub line {
my($self,$datasrc)=@_;
my($null)=$self->null;
if ( $datasrc =~ /mysql/ ) { #yucky mysql hack
$null ||= "NOT NULL"
}
if ( $datasrc =~ /Pg/ ) { #yucky Pg hack
$null ||= "NOT NULL";
$null =~ s/^NULL$//;
}
join(' ',
$self->name,
$self->type. ( $self->length ? '('.$self->length.')' : '' ),
$null,
);
}
=back
=head1 BUGS
=head1 SEE ALSO
L<FS::dbdef_table>, L<FS::dbdef>, L<DBI>
=head1 VERSION
$Id: dbdef_column.pm,v 1.3 1998-10-13 13:04:17 ivan Exp $
=head1 HISTORY
class for dealing with column definitions
ivan@sisd.com 98-apr-17
now methods can be used to get or set data ivan@sisd.com 98-may-11
mySQL-specific hack for null (what should be default?) ivan@sisd.com 98-jun-2
$Log: dbdef_column.pm,v $
Revision 1.3 1998-10-13 13:04:17 ivan
fixed doc to indicate Pg specific syntax too
Revision 1.2 1998/10/12 23:40:28 ivan
added Pg-specific behaviour in sub line
=cut
1;
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