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Lucy::Index::PostingListReader – Apache Lucy Documentation
Apache Lucy™

NAME

Lucy::Index::PostingListReader - Read postings data.

SYNOPSIS

my $posting_list_reader 
    = $seg_reader->obtain("Lucy::Index::PostingListReader");
my $posting_list = $posting_list_reader->posting_list(
    field => 'title', 
    term  => 'foo',
);

DESCRIPTION

PostingListReaders produce PostingList objects which convey document matching information.

ABSTRACT METHODS

posting_list

my $posting_list = $posting_list_reader->posting_list(
    field => $field  # default: undef
    term  => $term   # default: undef
);

Returns a PostingList, or undef if either field is undef or field is not present in any documents.

  • field - A field name.
  • term - If supplied, the PostingList will be pre-located to this term using seek().

METHODS

aggregator

my $result = $posting_list_reader->aggregator(
    readers => $readers  # required
    offsets => $offsets  # required
);

Returns undef since PostingLists may only be iterated at the segment level.

INHERITANCE

Lucy::Index::PostingListReader isa Lucy::Index::DataReader isa Clownfish::Obj.