1Class::DBI::ColumnGroupUesre(r3)Contributed Perl DocumenCtlaatsiso:n:DBI::ColumnGrouper(3)
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NAME

6       Class::DBI::ColumnGrouper - Columns and Column Groups
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SYNOPSIS

9               my $colg = Class::DBI::ColumnGrouper->new;
10                  $colg->add_group(People => qw/star director producer/);
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12               my @cols = $colg->group_cols($group);
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14               my @all            = $colg->all_columns;
15               my @pri_col        = $colg->primary;
16               my @essential_cols = $colg->essential;
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DESCRIPTION

19       Each Class::DBI class maintains a list of its columns as class data.
20       This provides an interface to that. You probably don't want to be
21       dealing with this directly.
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METHODS

24   new
25               my $colg = Class::DBI::ColumnGrouper->new;
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27       A new blank ColumnnGrouper object.
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29   clone
30               my $colg2 = $colg->clone;
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32       Clone an existing ColumnGrouper.
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34   add_column / find_column
35               $colg->add_column($name);
36               my Class::DBI::Column $col = $colg->find_column($name);
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38       Add or return a Column object for the given column name.
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40   add_group
41               $colg->add_group(People => qw/star director producer/);
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43       This adds a list of columns as a column group.
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45   group_cols / groups_for
46               my @colg = $cols->group_cols($group);
47               my @groups = $cols->groups_for(@cols);
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49       This returns a list of all columns which are in the given group, or the
50       groups a given column is in.
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52   columns_in
53               my @cols = $colg->columns_in(@groups);
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55       This returns a list of all columns which are in the given groups.
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57   all_columns
58               my @all = $colg->all_columns;
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60       This returns a list of all the real columns.
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62   primary
63               my $pri_col = $colg->primary;
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65       This returns a list of the columns in the Primary group.
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67   essential
68               my @essential_cols = $colg->essential;
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70       This returns a list of the columns in the Essential group.
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74perl v5.36.0                      2023-01-20      Class::DBI::ColumnGrouper(3)
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