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.\"
.IX Title "Lucy::Index::DocReader 3pm"
.TH Lucy::Index::DocReader 3pm "2015-03-06" "perl v5.20.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Lucy::Index::DocReader \- Retrieve stored documents.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&    my $doc_reader = $seg_reader\->obtain("Lucy::Index::DocReader");
\&    my $doc        = $doc_reader\->fetch_doc($doc_id);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
DocReader defines the interface by which documents (with all stored fields)
are retrieved from the index.  The default implementation returns
HitDoc objects.
.SH "ABSTRACT METHODS"
.IX Header "ABSTRACT METHODS"
.SS "fetch_doc(doc_id)"
.IX Subsection "fetch_doc(doc_id)"
Retrieve the document identified by \f(CW\*(C`doc_id\*(C'\fR.
.PP
Returns: a HitDoc.
.SH "METHODS"
.IX Header "METHODS"
.SS "aggregator( \fI[labeled params]\fP )"
.IX Subsection "aggregator( [labeled params] )"
Returns a DocReader which divvies up requests to its sub-readers
according to the offset range.
.IP "\(bu" 4
\&\fBreaders\fR \- An array of DocReaders.
.IP "\(bu" 4
\&\fBoffsets\fR \- Doc id start offsets for each reader.
.SH "INHERITANCE"
.IX Header "INHERITANCE"
Lucy::Index::DocReader isa Lucy::Index::DataReader isa Lucy::Object::Obj.