1Lucy::Index::IndexManagUesre(r3)Contributed Perl DocumenLtuactyi:o:nIndex::IndexManager(3)
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NAME

6       Lucy::Index::IndexManager - Policies governing index updating, locking,
7       and file deletion.
8

SYNOPSIS

10           use Sys::Hostname qw( hostname );
11           my $hostname = hostname() or die "Can't get unique hostname";
12           my $manager = Lucy::Index::IndexManager->new(
13               host => $hostname,
14           );
15
16           # Index time:
17           my $indexer = Lucy::Index::Indexer->new(
18               index => '/path/to/index',
19               manager => $manager,
20           );
21
22           # Search time:
23           my $reader = Lucy::Index::IndexReader->open(
24               index   => '/path/to/index',
25               manager => $manager,
26           );
27           my $searcher = Lucy::Search::IndexSearcher->new( index => $reader );
28

DESCRIPTION

30       IndexManager is an advanced-use class for controlling index locking,
31       updating, merging, and deletion behaviors.
32
33       IndexManager and Architecture are complementary classes: Architecture
34       is used to define traits and behaviors which cannot change for the life
35       of an index; IndexManager is used for defining rules which may change
36       from process to process.
37

CONSTRUCTORS

39   new
40           my $manager = Lucy::Index::IndexManager->new(
41               host => $hostname,    # default: ""
42           );
43
44       Create a new IndexManager.
45
46       ·   host - An identifier which should be unique per-machine.
47
48       ·   lock_factory - A LockFactory.
49

METHODS

51   set_folder
52           $index_manager->set_folder($folder);
53           $index_manager->set_folder();  # default: undef
54
55       Setter for "folder" member.  Typical clients (Indexer, IndexReader)
56       will use this method to install their own Folder instance.
57
58   get_folder
59           my $folder = $index_manager->get_folder();
60
61       Getter for "folder" member.
62
63   get_host
64           my $string = $index_manager->get_host();
65
66       Getter for "host" member.
67
68   recycle
69           my $arrayref = $index_manager->recycle(
70               reader     => $reader,      # required
71               del_writer => $del_writer,  # required
72               cutoff     => $cutoff,      # required
73               optimize   => $optimize,    # default: false
74           );
75
76       Return an array of SegReaders representing segments that should be
77       consolidated.  Implementations must balance index-time churn against
78       search-time degradation due to segment proliferation. The default
79       implementation prefers small segments or segments with a high
80       proportion of deletions.
81
82       ·   reader - A PolyReader.
83
84       ·   del_writer - A DeletionsWriter.
85
86       ·   cutoff - A segment number which all returned SegReaders must
87           exceed.
88
89       ·   optimize - A boolean indicating whether to spend extra time
90           optimizing the index for search-time performance.
91
92   make_write_lock
93           my $lock = $index_manager->make_write_lock();
94
95       Create the Lock which controls access to modifying the logical content
96       of the index.
97
98   set_write_lock_timeout
99           $index_manager->set_write_lock_timeout($timeout);
100
101       Setter for write lock timeout.  Default: 1000 milliseconds.
102
103   get_write_lock_timeout
104           my $int = $index_manager->get_write_lock_timeout();
105
106       Getter for write lock timeout.
107
108   set_write_lock_interval
109           $index_manager->set_write_lock_interval($timeout);
110
111       Setter for write lock retry interval.  Default: 100 milliseconds.
112
113   get_write_lock_interval
114           my $int = $index_manager->get_write_lock_interval();
115
116       Getter for write lock retry interval.
117

INHERITANCE

119       Lucy::Index::IndexManager isa Clownfish::Obj.
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123perl v5.30.1                      2020-01-30      Lucy::Index::IndexManager(3)
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