1Lucy::Search::PolyQueryU(s3e)r Contributed Perl DocumentaLtuicoyn::Search::PolyQuery(3)
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NAME

6       Lucy::Search::PolyQuery - Base class for composite Query objects.
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SYNOPSIS

9           sub walk {
10               my $query = shift;
11               if ( $query->isa("Lucy::Search::PolyQuery") ) {
12                   if    ( $query->isa("Lucy::Search::ORQuery") )  { ... }
13                   elsif ( $query->isa("Lucy::Search::ANDQuery") ) { ... }
14                   elsif ( $query->isa("Lucy::Search::RequiredOptionalQuery") ) {
15                       ...
16                   }
17                   elsif ( $query->isa("Lucy::Search::NOTQuery") ) { ... }
18               }
19               else { ... }
20           }
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DESCRIPTION

23       PolyQuery serves as a shared base class for ANDQuery, ORQuery,
24       NOTQuery, and RequiredOptionalQuery.  All of these classes may serve as
25       nodes in composite Query with a tree structure which may be walked.
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METHODS

28   add_child
29           $poly_query->add_child($query);
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31       Add a child Query node.
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INHERITANCE

34       Lucy::Search::PolyQuery isa Lucy::Search::Query isa Clownfish::Obj.
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38perl v5.30.0                      2019-07-26        Lucy::Search::PolyQuery(3)