| 1 | | | | | package Koha::Object; |
| 2 | | | | | |
| 3 | | | | | # Copyright ByWater Solutions 2014 |
| 4 | | | | | # |
| 5 | | | | | # This file is part of Koha. |
| 6 | | | | | # |
| 7 | | | | | # Koha is free software; you can redistribute it and/or modify it under the |
| 8 | | | | | # terms of the GNU General Public License as published by the Free Software |
| 9 | | | | | # Foundation; either version 3 of the License, or (at your option) any later |
| 10 | | | | | # version. |
| 11 | | | | | # |
| 12 | | | | | # Koha is distributed in the hope that it will be useful, but WITHOUT ANY |
| 13 | | | | | # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
| 14 | | | | | # A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
| 15 | | | | | # |
| 16 | | | | | # You should have received a copy of the GNU General Public License along |
| 17 | | | | | # with Koha; if not, write to the Free Software Foundation, Inc., |
| 18 | | | | | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | | | | | |
| 20 | | | | | use Modern::Perl; |
| 21 | | | | | |
| 22 | | | | | use Carp; |
| 23 | | | | | |
| 24 | | | | | use Koha::Database; |
| 25 | | | | | |
| 26 | | | | | =head1 NAME |
| 27 | | | | | |
| 28 | | | | | Koha::Object - Koha Object base class |
| 29 | | | | | |
| 30 | | | | | =head1 SYNOPSIS |
| 31 | | | | | |
| 32 | | | | | use Koha::Object; |
| 33 | | | | | my $object = Koha::Object->new({ property1 => $property1, property2 => $property2, etc... } ); |
| 34 | | | | | |
| 35 | | | | | =head1 DESCRIPTION |
| 36 | | | | | |
| 37 | | | | | This class must always be subclassed. |
| 38 | | | | | |
| 39 | | | | | =head1 API |
| 40 | | | | | |
| 41 | | | | | =head2 Class Methods |
| 42 | | | | | |
| 43 | | | | | =cut |
| 44 | | | | | |
| 45 | | | | | =head3 Koha::Object->new(); |
| 46 | | | | | |
| 47 | | | | | my $object = Koha::Object->new(); |
| 48 | | | | | my $object = Koha::Object->new($attributes); |
| 49 | | | | | |
| 50 | | | | | Note that this cannot be used to retrieve record from the DB. |
| 51 | | | | | |
| 52 | | | | | =cut |
| 53 | | | | | |
| 54 | | | | | sub new { |
| 55 | | | | | my ( $class, $attributes ) = @_; |
| 56 | | | | | my $self = {}; |
| 57 | | | | | |
| 58 | | | | | if ($attributes) { |
| 59 | | | | | $self->{_result} = |
| 60 | | | | | Koha::Database->new()->schema()->resultset( $class->type() ) |
| 61 | | | | | ->new($attributes); |
| 62 | | | | | } |
| 63 | | | | | |
| 64 | | | | | croak("No type found! Koha::Object must be subclassed!") |
| 65 | | | | | unless $class->type(); |
| 66 | | | | | |
| 67 | | | | | bless( $self, $class ); |
| 68 | | | | | |
| 69 | | | | | } |
| 70 | | | | | |
| 71 | | | | | =head3 Koha::Object->_new_from_dbic(); |
| 72 | | | | | |
| 73 | | | | | my $object = Koha::Object->_new_from_dbic($dbic_row); |
| 74 | | | | | |
| 75 | | | | | =cut |
| 76 | | | | | |
| 77 | | | | | sub _new_from_dbic { |
| 78 | | | | | my ( $class, $dbic_row ) = @_; |
| 79 | | | | | my $self = {}; |
| 80 | | | | | |
| 81 | | | | | # DBIC result row |
| 82 | | | | | $self->{_result} = $dbic_row; |
| 83 | | | | | |
| 84 | | | | | croak("No type found! Koha::Object must be subclassed!") |
| 85 | | | | | unless $class->type(); |
| 86 | | | | | |
| 87 | | | | | croak( "DBIC result type " . ref( $self->{_result} ) . " isn't of the type " . $class->type() ) |
| 88 | | | | | unless ref( $self->{_result} ) eq "Koha::Schema::Result::" . $class->type(); |
| 89 | | | | | |
| 90 | | | | | bless( $self, $class ); |
| 91 | | | | | |
| 92 | | | | | } |
| 93 | | | | | |
| 94 | | | | | =head3 $object->store(); |
| 95 | | | | | |
| 96 | | | | | Saves the object in storage. |
| 97 | | | | | If the object is new, it will be created. |
| 98 | | | | | If the object previously existed, it will be updated. |
| 99 | | | | | |
| 100 | | | | | Returns: |
| 101 | | | | | $self if the store was a success |
| 102 | | | | | undef if the store failed |
| 103 | | | | | |
| 104 | | | | | =cut |
| 105 | | | | | |
| 106 | | | | | sub store { |
| 107 | | | | | my ($self) = @_; |
| 108 | | | | | |
| 109 | | | | | return $self->_result()->update_or_insert() ? $self : undef; |
| 110 | | | | | } |
| 111 | | | | | |
| 112 | | | | | =head3 $object->in_storage(); |
| 113 | | | | | |
| 114 | | | | | Returns true if the object has been previously stored. |
| 115 | | | | | |
| 116 | | | | | =cut |
| 117 | | | | | |
| 118 | | | | | sub in_storage { |
| 119 | | | | | my ($self) = @_; |
| 120 | | | | | |
| 121 | | | | | return $self->_result()->in_storage(); |
| 122 | | | | | } |
| 123 | | | | | |
| 124 | | | | | =head3 $object->is_changed(); |
| 125 | | | | | |
| 126 | | | | | Returns true if the object has properties that are different from |
| 127 | | | | | the properties of the object in storage. |
| 128 | | | | | |
| 129 | | | | | =cut |
| 130 | | | | | |
| 131 | | | | | sub is_changed { |
| 132 | | | | | my ( $self, @columns ) = @_; |
| 133 | | | | | |
| 134 | | | | | return $self->_result()->is_changed(@columns); |
| 135 | | | | | } |
| 136 | | | | | |
| 137 | | | | | =head3 $object->delete(); |
| 138 | | | | | |
| 139 | | | | | Removes the object from storage. |
| 140 | | | | | |
| 141 | | | | | Returns: |
| 142 | | | | | 1 if the deletion was a success |
| 143 | | | | | 0 if the deletion failed |
| 144 | | | | | -1 if the object was never in storage |
| 145 | | | | | |
| 146 | | | | | =cut |
| 147 | | | | | |
| 148 | | | | | sub delete { |
| 149 | | | | | my ($self) = @_; |
| 150 | | | | | |
| 151 | | | | | # Deleting something not in storage thows an exception |
| 152 | | | | | return -1 unless $self->_result()->in_storage(); |
| 153 | | | | | |
| 154 | | | | | # Return a boolean for succcess |
| 155 | | | | | return $self->_result()->delete() ? 1 : 0; |
| 156 | | | | | } |
| 157 | | | | | |
| 158 | | | | | =head3 $object->set( $properties_hashref ) |
| 159 | | | | | |
| 160 | | | | | $object->set( |
| 161 | | | | | { |
| 162 | | | | | property1 => $property1, |
| 163 | | | | | property2 => $property2, |
| 164 | | | | | property3 => $propery3, |
| 165 | | | | | } |
| 166 | | | | | ); |
| 167 | | | | | |
| 168 | | | | | Enables multiple properties to be set at once |
| 169 | | | | | |
| 170 | | | | | Returns: |
| 171 | | | | | 1 if all properties were set. |
| 172 | | | | | 0 if one or more properties do not exist. |
| 173 | | | | | undef if all properties exist but a different error |
| 174 | | | | | prevents one or more properties from being set. |
| 175 | | | | | |
| 176 | | | | | If one or more of the properties do not exist, |
| 177 | | | | | no properties will be set. |
| 178 | | | | | |
| 179 | | | | | =cut |
| 180 | | | | | |
| 181 | | | | | sub set { |
| 182 | | | | | my ( $self, $properties ) = @_; |
| 183 | | | | | |
| 184 | | | | | my @columns = @{$self->_columns()}; |
| 185 | | | | | |
| 186 | | | | | foreach my $p ( keys %$properties ) { |
| 187 | | | | | unless ( grep {/^$p$/} @columns ) { |
| 188 | | | | | carp("No property $p!"); |
| 189 | | | | | return 0; |
| 190 | | | | | } |
| 191 | | | | | } |
| 192 | | | | | |
| 193 | | | | | return $self->_result()->set_columns($properties) ? $self : undef; |
| 194 | | | | | } |
| 195 | | | | | |
| 196 | | | | | =head3 $object->id(); |
| 197 | | | | | |
| 198 | | | | | Returns the id of the object if it has one. |
| 199 | | | | | |
| 200 | | | | | =cut |
| 201 | | | | | |
| 202 | | | | | sub id { |
| 203 | | | | | my ($self) = @_; |
| 204 | | | | | |
| 205 | | | | | my ( $id ) = $self->_result()->id(); |
| 206 | | | | | |
| 207 | | | | | return $id; |
| 208 | | | | | } |
| 209 | | | | | |
| 210 | | | | | =head3 $object->unblessed(); |
| 211 | | | | | |
| 212 | | | | | Returns an unblessed representation of object. |
| 213 | | | | | |
| 214 | | | | | =cut |
| 215 | | | | | |
| 216 | | | | | sub unblessed { |
| 217 | | | | | my ($self) = @_; |
| 218 | | | | | |
| 219 | | | | | return { $self->_result->get_columns }; |
| 220 | | | | | } |
| 221 | | | | | |
| 222 | | | | | =head3 $object->_result(); |
| 223 | | | | | |
| 224 | | | | | Returns the internal DBIC Row object |
| 225 | | | | | |
| 226 | | | | | =cut |
| 227 | | | | | |
| 228 | | | | | sub _result { |
| 229 | | | | | my ($self) = @_; |
| 230 | | | | | |
| 231 | | | | | # If we don't have a dbic row at this point, we need to create an empty one |
| 232 | | | | | $self->{_result} ||= |
| 233 | | | | | Koha::Database->new()->schema()->resultset( $self->type() )->new({}); |
| 234 | | | | | |
| 235 | | | | | return $self->{_result}; |
| 236 | | | | | } |
| 237 | | | | | |
| 238 | | | | | =head3 $object->_columns(); |
| 239 | | | | | |
| 240 | | | | | Returns an arrayref of the table columns |
| 241 | | | | | |
| 242 | | | | | =cut |
| 243 | | | | | |
| 244 | | | | | sub _columns { |
| 245 | | | | | my ($self) = @_; |
| 246 | | | | | |
| 247 | | | | | # If we don't have a dbic row at this point, we need to create an empty one |
| 248 | 1 | 1.22ms | | | $self->{_columns} ||= [ $self->_result()->result_source()->columns() ]; |
| 249 | | | | | |
| 250 | | | | | return $self->{_columns}; |
| 251 | | | | | } |
| 252 | | | | | |
| 253 | | | | | |
| 254 | | | | | =head3 AUTOLOAD |
| 255 | | | | | |
| 256 | | | | | The autoload method is used only to get and set values for an objects properties. |
| 257 | | | | | |
| 258 | | | | | =cut |
| 259 | | | | | |
| 260 | | | | | sub AUTOLOAD { |
| 261 | | | | | my $self = shift; |
| 262 | | | | | |
| 263 | | | | | my $method = our $AUTOLOAD; |
| 264 | | | | | $method =~ s/.*://; |
| 265 | | | | | |
| 266 | | | | | my @columns = @{$self->_columns()}; |
| 267 | | | | | # Using direct setter/getter like $item->barcode() or $item->barcode($barcode); |
| 268 | | | | | if ( grep {/^$method$/} @columns ) { |
| 269 | | | | | if ( @_ ) { |
| 270 | | | | | $self->_result()->set_column( $method, @_ ); |
| 271 | | | | | return $self; |
| 272 | | | | | } else { |
| 273 | 1 | 3.93ms | | | my $value = $self->_result()->get_column( $method ); |
| 274 | | | | | return $value; |
| 275 | | | | | } |
| 276 | | | | | } |
| 277 | | | | | |
| 278 | | | | | carp "No method $method!"; |
| 279 | | | | | return; |
| 280 | | | | | } |
| 281 | | | | | |
| 282 | | | | | =head3 type |
| 283 | | | | | |
| 284 | | | | | This method must be defined in the child class. The value is the name of the DBIC resultset. |
| 285 | | | | | For example, for borrowers, the type method will return "Borrower". |
| 286 | | | | | |
| 287 | | | | | =cut |
| 288 | | | | | |
| 289 | | | | | sub type { } |
| 290 | | | | | |
| 291 | | | | | sub DESTROY { } |
| 292 | | | | | |
| 293 | | | | | =head1 AUTHOR |
| 294 | | | | | |
| 295 | | | | | Kyle M Hall <kyle@bywatersolutions.com> |
| 296 | | | | | |
| 297 | | | | | =cut |
| 298 | | | | | |
| 299 | | | | | 1; |