Commit | Line | Data |
24794769 |
1 | package DBIx::Class::DeploymentHandler::HandlesVersioning; |
2 | use Moose::Role; |
3 | |
4 | requires 'next_version_set'; |
5 | |
6 | has schema => ( |
7 | isa => 'DBIx::Class::Schema', |
8 | is => 'ro', |
9 | required => 1, |
10 | handles => [qw( ddl_filename schema_version )], |
11 | ); |
12 | |
13 | has version_rs => ( |
14 | isa => 'DBIx::Class::ResultSet', |
15 | is => 'ro', |
16 | lazy_build => 1, |
17 | handles => [qw( is_installed db_version )], |
18 | ); |
19 | |
20 | sub _build_version_rs { |
21 | $_[0]->schema->set_us_up_the_bomb; |
22 | $_[0]->schema->resultset('__VERSION') |
23 | } |
24 | |
25 | has to_version => ( |
26 | is => 'ro', |
27 | lazy_build => 1, |
28 | ); |
29 | |
30 | sub _build_to_version { $_[0]->schema->schema_version } |
31 | |
32 | 1; |
33 | |
34 | __END__ |
35 | |
36 | # normally a VersionHandler will take |
37 | # a to_version and yeild an iterator of |
38 | # "version sets" or something like that. |
39 | # |
40 | # A "version set" is basically an arrayref |
41 | # of "version numbers" (which we already know |
42 | # is vague as is.) Typically an call to a |
43 | # VH w/ a db version of 1 and a "to_version" |
44 | # of 5 will iterate over something like this: |
45 | # [1, 2] |
46 | # [2, 3] |
47 | # [3, 4] |
48 | # [4, 5] |
49 | # |
50 | # Of course rob wants to be able to have dep |
51 | # management with his versions, so I *think* his |
52 | # would work like this: |
53 | # |
54 | # to_version = 7, db_version = 1 |
55 | # [1] |
56 | # [5] |
57 | # [7] |
58 | # |
59 | # Because 7 depended on 5, 5 was installed first; |
60 | # note that this potentially never released module |
61 | # doesn't use version pairs, instead it just yeilds |
62 | # versions. Version pairs are too much work for users |
63 | # to have to deal with in that sitation. We may |
64 | # actually switch to this for other versioners. |
65 | # |
66 | # The upshot of all this is that the DeploymentMethod |
67 | # needs to be able to take an ArrayRef[VersionNumber], |
68 | # instead of just a pair of VersionNumber. |
69 | vim: ts=2 sw=2 expandtab |