Class::DBI::ColumnGrouper - Columns and Column Groups my $colg = Class::DBI::ColumnGrouper->new; $colg->add_group(People => qw/star director producer/); my @cols = $colg->group_cols($group); my @all = $colg->all_columns; my @pri_col = $colg->primary; my @essential_cols = $colg->essential; Each Class::DBI class maintains a list of its columns as class data. This provides an interface to that. You probably don't want to be dealing with this directly.

new
my $colg = Class::DBI::ColumnGrouper->new; A new blank ColumnnGrouper object.

clone
my $colg2 = $colg->clone; Clone an existing ColumnGrouper.

add_column / find_column
$colg->add_column($name); my Class::DBI::Column $col = $colg->find_column($name); Add or return a Column object for the given column name.

add_group
$colg->add_group(People => qw/star director producer/); This adds a list of columns as a column group.

group_cols / groups_for
my @colg = $cols->group_cols($group); my @groups = $cols->groups_for(@cols); This returns a list of all columns which are in the given group, or the groups a given column is in.

columns_in
my @cols = $colg->columns_in(@groups); This returns a list of all columns which are in the given groups.

all_columns
my @all = $colg->all_columns; This returns a list of all the real columns.

primary
my $pri_col = $colg->primary; This returns a list of the columns in the Primary group.

essential
my @essential_cols = $colg->essential; This returns a list of the columns in the Essential group.