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Class::DBI::ColumnGrouper(3pm) User Contributed Perl Documentation Class::DBI::ColumnGrouper(3pm) NAME
Class::DBI::ColumnGrouper - Columns and Column Groups SYNOPSIS
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; DESCRIPTION
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. METHODS
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. perl v5.12.4 2005-09-14 Class::DBI::ColumnGrouper(3pm)