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package WebService::Lucene::Document; |
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8885
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use strict; |
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use warnings; |
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use base qw( WebService::Lucene::Client Class::Accessor::Fast ); |
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use WebService::Lucene::Field; |
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use WebService::Lucene::XOXOParser; |
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use XML::Atom::Entry; |
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__PACKAGE__->mk_accessors( qw( fields_ref base_url title relevance ) ); |
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BEGIN { |
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for my $type ( WebService::Lucene::Field->types ) { |
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no strict 'refs'; |
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*{ __PACKAGE__ . "\::add_$type" } = sub { |
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shift->add( WebService::Lucene::Field->$type( @_ ) ); |
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} |
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} |
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} |
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=head1 NAME |
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WebService::Lucene::Document - Object to represent a Lucene Document |
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=head1 SYNOPSIS |
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# Create a new document |
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$doc = WebService::Lucene::Document->new; |
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# add a field |
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$doc->add( $field ); |
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=head1 DESCRIPTION |
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Object to represent a Lucene Document. |
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=head1 METHODS |
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=head2 new( ) |
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Creates an empty document. |
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=cut |
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sub new { |
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my $class = shift; |
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my $self = $class->SUPER::new; |
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$self->clear_fields; |
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return $self; |
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} |
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=head2 create() |
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Sends a create request for this document. |
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=cut |
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sub create { |
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my ( $self ) = @_; |
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my $url = $self->base_url; |
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66
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$url =~ s{[^/]+/?$}{}; |
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my $new_url = $self->createEntry( $url, $self->as_entry ); |
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$self->base_url( $new_url ); |
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return $self; |
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} |
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=head2 new_from_entry( $entry ) |
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Takes an L and constructs a new object. |
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=cut |
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sub new_from_entry { |
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my ( $class, $entry ) = @_; |
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my $self = $class->new; |
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if ( $entry->link ) { |
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$self->base_url( $entry->link->href ); |
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} |
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$self->relevance( |
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$entry->get( 'http://a9.com/-/opensearch/extensions/relevance/1.0/', 'score' ) ); |
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$self->title( $entry->title ); |
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my $content = $entry->content->body; |
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my @properties = WebService::Lucene::XOXOParser->parse( $content ); |
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if ( @properties and $properties[ 0 ]->{ class } ) { |
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for my $property ( @properties ) { |
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my %attrs = map { $_ => 1 } split( / /, $property->{ class } ); |
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my $method |
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= 'add_' . WebService::Lucene::Field->get_type( \%attrs ); |
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$self->$method( map { $property->{ $_ } } qw( name value ) ); |
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} |
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} |
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else { |
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$self->fields_ref( |
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{ $self->title => |
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[ map { $_->{ name } => $_->{ value } } @properties ] |
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} |
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); |
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} |
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return $self; |
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} |
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=head2 add( @fields ) |
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Adds each field to the document. |
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=cut |
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sub add { |
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my $self = shift; |
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my $fields = $self->fields_ref; |
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while ( my $field = shift ) { |
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my $name = $field->name; |
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unless ( exists $fields->{ $name } ) { |
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$fields->{ $name } = []; |
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} |
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unless ( $self->can( $name ) ) { |
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no strict 'refs'; |
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*{ ref( $self ) . "\::$name" } = _field_accessor( $name ); |
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} |
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push @{ $fields->{ $name } }, $field; |
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} |
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} |
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138
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=head2 add_keyword( $name => $value ) |
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140
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Auto-generated shortcuts to add a "keyword" field. |
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142
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=head2 add_sorted $name => $value ) |
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144
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Auto-generated shortcuts to add a "sorted" field. |
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=head2 add_text( $name => $value ) |
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148
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Auto-generated shortcuts to add a "keyword" field. |
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150
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=head2 add_unindexed( $name => $value ) |
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152
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Auto-generated shortcuts to add a "keyword" field. |
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154
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=head2 add_unstored( $name => $value ) |
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156
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Auto-generated shortcuts to add a "keyword" field. |
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158
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=head2 title( [$title] ) |
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160
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The title of the document, set from search or listing results. |
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162
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=head2 relevance( [$relevance] ) |
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164
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A floating point number (0..1) set from search results. |
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166
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=head2 fields_ref( [$fields] ) |
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168
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A name-keyed hashref of field objects. |
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170
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=head2 facets() |
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172
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Technically an alias for fields. But should only be used when fetching |
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facet results. |
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175
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=cut |
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177
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*facets = \&fields; |
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179
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=head2 get( [$name] ) |
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181
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Alias for C. |
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183
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=cut |
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185
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*get = \&fields; |
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187
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=head2 fields( [$name] ) |
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189
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Returns all fields named <$name> or all fields if no name |
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is specified. |
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192
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=cut |
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194
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sub fields { |
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my $self = shift; |
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my $name = shift; |
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my $fieldsref = $self->fields_ref; |
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199
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if ( $name ) { |
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my $fields = $fieldsref->{ $name }; |
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return () unless defined $fields; |
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return wantarray ? @$fields : $fields->[ 0 ]; |
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} |
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205
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return map { @{ $fieldsref->{ $_ } } } keys %$fieldsref; |
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} |
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208
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=head2 clear_fields( ) |
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210
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Removes all fields from this document |
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212
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=cut |
213
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214
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sub clear_fields { |
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shift->fields_ref( {} ); |
216
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} |
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218
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=head2 remove_field( $field ) |
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220
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Remove a particular field from the document |
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222
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=cut |
223
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224
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sub remove_field { |
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my $self = shift; |
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my $field = shift; |
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228
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{ |
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no strict 'refs'; |
230
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undef *{ ref( $self ) . "\::$field" }; |
231
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} |
232
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233
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return delete $self->fields_ref->{ $field }; |
234
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} |
235
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236
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=head2 as_entry( ) |
237
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238
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Generates an L object for the current document. |
239
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240
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=cut |
241
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242
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sub as_entry { |
243
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my ( $self ) = @_; |
244
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245
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my $entry = XML::Atom::Entry->new; |
246
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$entry->title( $self->title || 'New Entry' ); |
247
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248
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my @properties; |
249
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for my $field ( $self->fields ) { |
250
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my $types = $field->get_info; |
251
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252
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push @properties, |
253
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{ |
254
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name => $field->name, |
255
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value => $field->value, |
256
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class => join( ' ', grep { $types->{ $_ } } keys %$types ) |
257
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}; |
258
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} |
259
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my $xml = WebService::Lucene::XOXOParser->construct( @properties ); |
260
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261
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$entry->content( $xml ); |
262
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$entry->content->type( 'xhtml' ); |
263
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264
|
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return $entry; |
265
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266
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} |
267
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268
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=head2 update( ) |
269
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270
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|
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Updates the document in the index. |
271
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272
|
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|
=cut |
273
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274
|
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|
sub update { |
275
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|
|
my ( $self ) = @_; |
276
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|
|
$self->updateEntry( $self->base_url, $self->as_entry ); |
277
|
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} |
278
|
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279
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|
|
=head2 delete( ) |
280
|
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|
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281
|
|
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|
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|
|
Delete the document from the index. |
282
|
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|
|
283
|
|
|
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|
|
=cut |
284
|
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|
|
285
|
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|
|
sub delete { |
286
|
|
|
|
|
|
|
my ( $self ) = @_; |
287
|
|
|
|
|
|
|
$self->deleteEntry( $self->base_url ); |
288
|
|
|
|
|
|
|
} |
289
|
|
|
|
|
|
|
|
290
|
|
|
|
|
|
|
=head2 _field_accessor( $name ) |
291
|
|
|
|
|
|
|
|
292
|
|
|
|
|
|
|
Generates a closure for accessing a field. |
293
|
|
|
|
|
|
|
|
294
|
|
|
|
|
|
|
=cut |
295
|
|
|
|
|
|
|
|
296
|
|
|
|
|
|
|
sub _field_accessor { |
297
|
|
|
|
|
|
|
my $name = shift; |
298
|
|
|
|
|
|
|
return sub { |
299
|
|
|
|
|
|
|
my $self = shift; |
300
|
|
|
|
|
|
|
my $fields = $self->fields_ref->{ $name }; |
301
|
|
|
|
|
|
|
|
302
|
|
|
|
|
|
|
return unless defined $fields; |
303
|
|
|
|
|
|
|
|
304
|
|
|
|
|
|
|
my @values |
305
|
|
|
|
|
|
|
= map { $_->value } ( wantarray ? @$fields : $fields->[ 0 ] ); |
306
|
|
|
|
|
|
|
return wantarray ? @values : $values[ 0 ]; |
307
|
|
|
|
|
|
|
} |
308
|
|
|
|
|
|
|
} |
309
|
|
|
|
|
|
|
|
310
|
|
|
|
|
|
|
=head1 AUTHORS |
311
|
|
|
|
|
|
|
|
312
|
|
|
|
|
|
|
=over 4 |
313
|
|
|
|
|
|
|
|
314
|
|
|
|
|
|
|
=item * Brian Cassidy Ebrian.cassidy@nald.caE |
315
|
|
|
|
|
|
|
|
316
|
|
|
|
|
|
|
=item * Adam Paynter Eadam.paynter@nald.caE |
317
|
|
|
|
|
|
|
|
318
|
|
|
|
|
|
|
=back |
319
|
|
|
|
|
|
|
|
320
|
|
|
|
|
|
|
=head1 COPYRIGHT AND LICENSE |
321
|
|
|
|
|
|
|
|
322
|
|
|
|
|
|
|
Copyright 2006-2009 National Adult Literacy Database |
323
|
|
|
|
|
|
|
|
324
|
|
|
|
|
|
|
This library is free software; you can redistribute it and/or modify |
325
|
|
|
|
|
|
|
it under the same terms as Perl itself. |
326
|
|
|
|
|
|
|
|
327
|
|
|
|
|
|
|
=cut |
328
|
|
|
|
|
|
|
|
329
|
|
|
|
|
|
|
1; |