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.IX Title "Text::Query::ParseSimple 3"
.TH Text::Query::ParseSimple 3 2024-07-13 "perl v5.38.2" "User Contributed Perl Documentation"
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.SH NAME
Text::Query::ParseSimple \- Parse AltaVista simple query syntax
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 5
\&  use Text::Query;
\&  my $q=new Text::Query(\*(Aqhello and world\*(Aq,
\&                        \-parse => \*(AqText::Query::ParseSimple\*(Aq,
\&                        \-solve => \*(AqText::Query::SolveSimpleString\*(Aq,
\&                        \-build => \*(AqText::Query::BuildSimpleString\*(Aq);
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
This module provides an object that parses a string  
containing a Boolean query expression similar to an AltaVista "simple 
query". Elements of the query expression may be assigned weights.
.PP
It's base class is Text::Query::Parse;
.PP
Query expressions are compiled into an internal form when a new object is 
created or the \f(CW\*(C`prepare\*(C'\fR method is called; they are not recompiled on each 
match.
.PP
Query expressions consist of words (sequences of non-whitespace)  
or phrases (quoted strings) separated by whitespace.  Words or phrases 
prefixed with a \f(CW\*(C`+\*(C'\fR must be present for the expression to match; words or 
phrases prefixed with a \f(CW\*(C`\-\*(C'\fR must be absent for the expression to match.
.PP
Words or phrases may optionally be followed by a number in parentheses (no 
whitespace is allowed between the word or phrase and the parenthesized 
number).  This number specifies the weight given to the word or phrase.
If a weight is not given, a weight of 1 is assumed.
.SH EXAMPLES
.IX Header "EXAMPLES"
.Vb 10
\&  use Text::Query;
\&  my $q=new Text::Query(\*(Aq+hello world\*(Aq,
\&                        \-solve => \*(AqText::Query::SolveSimpleString\*(Aq,
\&                        \-build => \*(AqText::Query::BuildSimpleString\*(Aq);
\&  die "bad query expression" if not defined $q;
\&  $count=$q\->match;
\&  ...
\&  $q\->prepare(\*(Aqgoodbye adios \-"ta ta"\*(Aq, \-litspace=>1);
\&  #requires single space between the two ta\*(Aqs
\&  if ($q\->match($line, \-case=>1)) {
\&  #doesn\*(Aqt match "Goodbye"
\&  ...
\&  $q\->prepare(\*(Aq\e\ebintegrate\e\eb\*(Aq, \-regexp=>1);
\&  #won\*(Aqt match "disintegrated"
\&  ...
\&  $q\->prepare(\*(Aqinformation(2) retrieval\*(Aq);
\&  #information has twice the weight of retrieval
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBText::Query\fR\|(3)
\&\fBText::Query::Parse\fR\|(3)
.SH AUTHORS
.IX Header "AUTHORS"
Eric Bohlman (ebohlman@netcom.com)
.PP
Loic Dachary (loic@senga.org)