NAME

SQL::Translator::Filter::Globals - Add global fields and indices to all tables.

SYNOPSIS

# e.g. Add timestamp field to all tables.
use SQL::Translator;

my $sqlt = SQL::Translator->new(
    from => 'MySQL',
    to   => 'MySQL',
    filters => [
      Globals => {
          fields => [
              {
                  name => 'modified'
                  data_type => 'TIMESTAMP'
              }
          ],
          indices => [
              {
                  fields => 'modifed',
              },
          ]
          constraints => [
              {
              }
          ]
      },
    ],
) || die "SQLFairy error : ".SQL::Translator->error;
my $sql = $sqlt->translate || die "SQLFairy error : ".$sqlt->error;

DESCRIPTION

Adds global fields, indices and constraints to all tables in the schema. The globals to add can either be defined in the filter args or using a _GLOBAL_ table (see below).

If a table already contains a field with the same name as a global then it is skipped for that table.

The _GLOBAL_ Table

An alternative to using the args is to add a table called _GLOBAL_ to the schema and then just use the filter. Any fields and indices defined on this table will be added to all the tables in the schema and the _GLOBAL_ table removed.

The name of the global can be changed using a global_table arg to the filter.

SEE ALSO

perl(1), SQL::Translator

BUGS

Will generate duplicate indices if an index already exists on a table the same as one added globally.

Will generate duplicate constraints if a constraint already exists on a table the same as one added globally.

TODO

Some extra data values that can be used to control the global addition. e.g. 'skip_global'.

AUTHOR

Mark Addison <grommit@users.sourceforge.net>