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1 | package SQL::Translator::Schema::View; |
2 | |
44659089 |
3 | # ---------------------------------------------------------------------- |
4 | # Copyright (C) 2002-2009 SQLFairy Authors |
5 | # |
6 | # This program is free software; you can redistribute it and/or |
7 | # modify it under the terms of the GNU General Public License as |
8 | # published by the Free Software Foundation; version 2. |
9 | # |
10 | # This program is distributed in the hope that it will be useful, but |
11 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | # General Public License for more details. |
14 | # |
15 | # You should have received a copy of the GNU General Public License |
16 | # along with this program; if not, write to the Free Software |
17 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
18 | # 02111-1307 USA |
19 | # ------------------------------------------------------------------- |
20 | |
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21 | =pod |
22 | |
23 | =head1 NAME |
24 | |
25 | SQL::Translator::Schema::View - SQL::Translator view object |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | use SQL::Translator::Schema::View; |
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30 | my $view = SQL::Translator::Schema::View->new( |
31 | name => 'foo', # name, required |
32 | sql => 'select id, name from foo', # SQL for view |
33 | fields => 'id, name', # field names in view |
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34 | ); |
35 | |
36 | =head1 DESCRIPTION |
37 | |
38 | C<SQL::Translator::Schema::View> is the view object. |
39 | |
40 | =head1 METHODS |
41 | |
42 | =cut |
43 | |
44 | use strict; |
25a02fa7 |
45 | use SQL::Translator::Utils 'parse_list_arg'; |
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46 | |
b6a880d1 |
47 | use base 'SQL::Translator::Schema::Object'; |
48 | |
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49 | use vars qw($VERSION $TABLE_COUNT $VIEW_COUNT); |
50 | |
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51 | $VERSION = '1.59'; |
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52 | |
9371be50 |
53 | __PACKAGE__->_attributes( qw/ |
54 | name sql fields schema order |
55 | /); |
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56 | |
57 | =pod |
58 | |
59 | =head2 new |
60 | |
61 | Object constructor. |
62 | |
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63 | my $view = SQL::Translator::Schema::View->new; |
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64 | |
65 | =cut |
66 | |
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67 | sub fields { |
68 | |
69 | =pod |
70 | |
71 | =head2 fields |
72 | |
73 | Gets and set the fields the constraint is on. Accepts a string, list or |
74 | arrayref; returns an array or array reference. Will unique the field |
75 | names and keep them in order by the first occurrence of a field name. |
76 | |
77 | $view->fields('id'); |
78 | $view->fields('id', 'name'); |
79 | $view->fields( 'id, name' ); |
80 | $view->fields( [ 'id', 'name' ] ); |
81 | $view->fields( qw[ id name ] ); |
82 | |
83 | my @fields = $view->fields; |
84 | |
85 | =cut |
86 | |
87 | my $self = shift; |
88 | my $fields = parse_list_arg( @_ ); |
89 | |
90 | if ( @$fields ) { |
91 | my ( %unique, @unique ); |
92 | for my $f ( @$fields ) { |
93 | next if $unique{ $f }; |
94 | $unique{ $f } = 1; |
95 | push @unique, $f; |
96 | } |
97 | |
98 | $self->{'fields'} = \@unique; |
99 | } |
100 | |
4598b71c |
101 | return wantarray ? @{ $self->{'fields'} || [] } : ($self->{'fields'} || ''); |
25a02fa7 |
102 | } |
103 | |
25a02fa7 |
104 | sub is_valid { |
105 | |
106 | =pod |
107 | |
108 | =head2 is_valid |
109 | |
110 | Determine whether the view is valid or not. |
111 | |
112 | my $ok = $view->is_valid; |
113 | |
114 | =cut |
115 | |
116 | my $self = shift; |
117 | |
118 | return $self->error('No name') unless $self->name; |
119 | return $self->error('No sql') unless $self->sql; |
120 | |
121 | return 1; |
122 | } |
123 | |
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124 | sub name { |
125 | |
126 | =pod |
127 | |
128 | =head2 name |
129 | |
130 | Get or set the view's name. |
131 | |
132 | my $name = $view->name('foo'); |
133 | |
134 | =cut |
135 | |
136 | my $self = shift; |
137 | $self->{'name'} = shift if @_; |
138 | return $self->{'name'} || ''; |
139 | } |
140 | |
25a02fa7 |
141 | sub order { |
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142 | |
143 | =pod |
144 | |
25a02fa7 |
145 | =head2 order |
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146 | |
25a02fa7 |
147 | Get or set the view's order. |
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148 | |
25a02fa7 |
149 | my $order = $view->order(3); |
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150 | |
151 | =cut |
152 | |
25a02fa7 |
153 | my ( $self, $arg ) = @_; |
154 | |
155 | if ( defined $arg && $arg =~ /^\d+$/ ) { |
156 | $self->{'order'} = $arg; |
157 | } |
158 | |
159 | return $self->{'order'} || 0; |
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160 | } |
161 | |
25a02fa7 |
162 | sub sql { |
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163 | |
164 | =pod |
165 | |
25a02fa7 |
166 | =head2 sql |
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167 | |
25a02fa7 |
168 | Get or set the view's SQL. |
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169 | |
25a02fa7 |
170 | my $sql = $view->sql('select * from foo'); |
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171 | |
172 | =cut |
173 | |
25a02fa7 |
174 | my $self = shift; |
175 | $self->{'sql'} = shift if @_; |
176 | return $self->{'sql'} || ''; |
177 | } |
178 | |
b039cab8 |
179 | sub schema { |
180 | |
181 | =pod |
182 | |
183 | =head2 schema |
184 | |
185 | Get or set the view's schema object. |
186 | |
187 | $view->schema( $schema ); |
188 | my $schema = $view->schema; |
189 | |
190 | =cut |
191 | |
192 | my $self = shift; |
193 | if ( my $arg = shift ) { |
194 | return $self->error('Not a schema object') unless |
195 | UNIVERSAL::isa( $arg, 'SQL::Translator::Schema' ); |
196 | $self->{'schema'} = $arg; |
197 | } |
198 | |
199 | return $self->{'schema'}; |
200 | } |
201 | |
abf315bb |
202 | sub equals { |
203 | |
204 | =pod |
205 | |
206 | =head2 equals |
207 | |
208 | Determines if this view is the same as another |
209 | |
210 | my $isIdentical = $view1->equals( $view2 ); |
211 | |
212 | =cut |
213 | |
214 | my $self = shift; |
215 | my $other = shift; |
6be9534b |
216 | my $case_insensitive = shift; |
d1a895ce |
217 | my $ignore_sql = shift; |
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218 | |
abf315bb |
219 | return 0 unless $self->SUPER::equals($other); |
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220 | return 0 unless $case_insensitive ? uc($self->name) eq uc($other->name) : $self->name eq $other->name; |
4598b71c |
221 | #return 0 unless $self->is_valid eq $other->is_valid; |
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222 | |
d1a895ce |
223 | unless ($ignore_sql) { |
224 | my $selfSql = $self->sql; |
225 | my $otherSql = $other->sql; |
226 | # Remove comments |
227 | $selfSql =~ s/--.*$//mg; |
228 | $otherSql =~ s/--.*$//mg; |
229 | # Collapse whitespace to space to avoid whitespace comparison issues |
230 | $selfSql =~ s/\s+/ /sg; |
231 | $otherSql =~ s/\s+/ /sg; |
232 | return 0 unless $selfSql eq $otherSql; |
233 | } |
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234 | |
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235 | my $selfFields = join(":", $self->fields); |
236 | my $otherFields = join(":", $other->fields); |
237 | return 0 unless $case_insensitive ? uc($selfFields) eq uc($otherFields) : $selfFields eq $otherFields; |
4598b71c |
238 | return 0 unless $self->_compare_objects(scalar $self->extra, scalar $other->extra); |
abf315bb |
239 | return 1; |
240 | } |
241 | |
25a02fa7 |
242 | sub DESTROY { |
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243 | my $self = shift; |
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244 | undef $self->{'schema'}; # destroy cyclical reference |
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245 | } |
246 | |
247 | 1; |
248 | |
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249 | =pod |
250 | |
251 | =head1 AUTHOR |
252 | |
c3b0b535 |
253 | Ken Youens-Clark E<lt>kclark@cpan.orgE<gt>. |
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254 | |
255 | =cut |