Putting 4.2.0 on top of 4.0.17
[usit-rt.git] / lib / RT / Shredder / Constants.pm
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48
49package RT::Shredder::Constants;
50
51use strict;
52use warnings;
53
54use base qw(Exporter);
55
56=head1 NAME
57
58RT::Shredder::Constants - RT::Shredder constants that is used to mark state of RT objects.
59
60=head1 DESCRIPTION
61
62This module exports two group of bit constants.
63First group is group of flags which are used to clarify dependecies between objects, and
64second group is states of RT objects in Shredder cache.
65
66=head1 FLAGS
67
68=head2 DEPENDS_ON
69
70Targets that has such dependency flag set should be wiped out with base object.
71
72=head2 WIPE_AFTER
73
74If dependency has such flag then target object would be wiped only
75after base object. You should mark dependencies with this flag
76if two objects depends on each other, for example Group and Principal
77have such relationship, this mean Group depends on Principal record and
78that Principal record depends on the same Group record. Other examples:
79User and Principal, User and its ACL equivalence group.
80
81=head2 VARIABLE
82
83This flag is used to mark dependencies that can be resolved with changing
84value in target object. For example ticket can be created by user we can
85change this reference when we delete user.
86
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87=cut
88
89use constant {
90 DEPENDS_ON => 0x000001,
91 WIPE_AFTER => 0x000010,
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92 VARIABLE => 0x001000,
93};
94
95=head1 STATES
96
97=head2 ON_STACK
98
99Default state of object in Shredder cache that means that object is
100loaded and placed into cache.
101
102=head2 WIPED
103
104Objects with this state are not exist any more in DB, but perl
105object is still in memory. This state is used to be shure that
106delete query is called once.
107
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108=cut
109
110use constant {
111 ON_STACK => 0x00000,
112 IN_WIPING => 0x00001,
113 WIPED => 0x00010,
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114};
115
116our @EXPORT = qw(
117 DEPENDS_ON
118 WIPE_AFTER
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119 VARIABLE
120 ON_STACK
121 IN_WIPING
122 WIPED
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123 );
124
1251;