| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You under the Apache License, Version 2.0 |
| # (the "License"); you may not use this file except in compliance with |
| # the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| use strict; |
| use warnings; |
| |
| package EvensOnlyCollector; |
| use base qw( Lucy::Search::Collector ); |
| |
| our %doc_ids; |
| |
| sub new { |
| my $self = shift->SUPER::new; |
| $doc_ids{$$self} = []; |
| return $self; |
| } |
| |
| sub collect { |
| my ( $self, $doc_id ) = @_; |
| if ( $doc_id % 2 == 0 ) { |
| push @{ $doc_ids{$$self} }, $doc_id; |
| } |
| } |
| |
| sub get_doc_ids { $doc_ids{ ${ +shift } } } |
| |
| sub DESTROY { |
| my $self = shift; |
| delete $doc_ids{$$self}; |
| $self->SUPER::DESTROY; |
| } |
| |
| package main; |
| |
| use Test::More tests => 1; |
| use Lucy::Test; |
| use LucyX::Search::MockMatcher; |
| |
| my $collector = EvensOnlyCollector->new; |
| my $matcher |
| = LucyX::Search::MockMatcher->new( doc_ids => [ 1, 5, 10, 1000 ], ); |
| $collector->set_matcher($matcher); |
| while ( my $doc_id = $matcher->next ) { |
| $collector->collect($doc_id); |
| } |
| is_deeply( |
| $collector->get_doc_ids, |
| [ 10, 1000 ], |
| "Collector can be subclassed" |
| ); |
| |