Support for emulating RTREE indexing in GiST. Contributed by

Oleg Bartunov and Teodor Sigaev.

contrib/rtree_gist/bench/bench.pl

@@ -0,0 +1,67 @@
+#!/usr/bin/perl -w
+
+use strict;
+# make sure we are in a sane environment.
+use DBI();
+use DBD::Pg();
+use Time::HiRes qw( usleep ualarm gettimeofday tv_interval );
+use Getopt::Std;
+my %opt;
+getopts('d:b:gv', \%opt);
+
+if ( !( scalar %opt ) ) {
+	print <<EOT;
+Usage:
+$0 -d DATABASE -b N [-v] [-g]
+-d DATABASE  - DATABASE name
+-b N    -number of cycles
+-v      - print sql
+-g      -use GiST index( default built-in R-tree )
+
+EOT
+	exit;
+}
+
+$opt{d} ||= 'TEST';
+my $dbi=DBI->connect('DBI:Pg:dbname='.$opt{d}) || die "Couldn't connect DB: $opt{d} !\n";
+
+my $sql;
+my $notice;
+my $sss = '(3000,3000,2990,2990)';
+if ( $opt{g} ) {
+	$notice = "Testing GiST implementation of R-Tree";
+	$sql = "select count(*) from boxtmp where b && '$sss'::box;";
+} else {
+	$notice = "Testing built-in implementation of R-Tree";
+	$sql = "select count(*) from boxtmp2 where b && '$sss'::box;";
+}
+
+my $t0 = [gettimeofday];
+my $count=0;
+my $b=$opt{b};
+
+$b ||=1;  
+foreach ( 1..$b ) {
+	my @a=exec_sql($dbi,$sql);
+	$count=$#a;
+}
+my $elapsed = tv_interval ( $t0, [gettimeofday]);
+print "$notice:\n";
+print "$sql\n" if ( $opt{v} );
+print "Done\n";
+print sprintf("total: %.02f sec; number: %d; for one: %.03f sec; found %d docs\n", $elapsed, $b, $elapsed/$b, $count+1 );
+$dbi -> disconnect;
+
+sub exec_sql {
+        my ($dbi, $sql, @keys) = @_;
+        my $sth=$dbi->prepare($sql) || die;
+        $sth->execute( @keys ) || die; 
+        my $r;  
+        my @row;
+        while ( defined ( $r=$sth->fetchrow_hashref ) ) {
+                push @row, $r;
+        }               
+        $sth->finish;   
+        return @row;
+}
+

contrib/rtree_gist/bench/create_test.pl

@@ -0,0 +1,50 @@
+#!/usr/bin/perl
+use strict;
+
+my $NUM = 20000;
+print "drop table boxtmp;\n"; 
+print "drop table boxtmp2;\n"; 
+
+print "create table boxtmp (b box);\n";
+print "create table boxtmp2 (b box);\n";
+
+srand(1);
+open(DAT,">bbb.dat") || die;
+foreach ( 1..$NUM ) {
+	#print DAT '(',int( 500+500*rand() ),',',int( 500+500*rand() ),',',int( 500*rand() ),',',int( 500*rand() ),")\n";
+	my ( $x1,$y1, $x2,$y2 ) = (
+		10000*rand(),
+		10000*rand(),
+		10000*rand(),
+		10000*rand()
+	);
+	print DAT '(',
+		max($x1,$x2),',',
+		max($y1,$y2),',',
+		min($x1,$x2),',',
+		min($y1,$y2),")\n";
+}
+close DAT;
+
+print "copy boxtmp from stdin;\n";
+open(DAT,"bbb.dat") || die;
+while(<DAT>) { print; }
+close DAT;
+print "\\.\n";
+
+print "copy boxtmp2 from stdin;\n";
+open(DAT,"bbb.dat") || die;
+while(<DAT>) { print; }
+close DAT;
+print "\\.\n";
+
+print "create index bix on boxtmp using gist (b gist_box_ops);\n";
+print "create index bix2 on boxtmp2 using rtree (b box_ops);\n";
+
+
+sub min {
+	return ( $_[0] < $_[1] ) ? $_[0] : $_[1];
+}
+sub max {
+	return ( $_[0] > $_[1] ) ? $_[0] : $_[1];
+}