#!/usr/bin/perl -w
use strict;
use DBI;
use Tree::Numbered::Tools;
# This examples
# Help message
sub usage
{
print "\n";
print "Usage:\n";
print "$0 mysql [database [user [password]]]\n";
print "or\n";
print "$0 pgsql [database [user [password]]]\n";
print "Examples:\n";
print "$0 mysql test root mysecret\n";
print "$0 pgsql test pgsql mysecret\n";
print "\n";
exit 1;
}
# Check for command line argument.
if (!$ARGV[0])
{
usage();
}
my $dbs = $ARGV[0];
my $user = '';
my $password = '';
my $database = '';
my $dbh_string = '';
SWITCH: for ($dbs) {
# MySQL
/^mysql$/i && do {
$database = $ARGV[1] || 'test';
$user = $ARGV[2] || 'root';
$password = $ARGV[3] || '';
$dbh_string = "DBI:mysql:database=$database;host=localhost";
last SWITCH;
};
# PgSQL
/^postgres$|^PostgreSQL$|^pgsql$|^pg$/i && do {
$database = $ARGV[1] || 'test';
$user = $ARGV[2] || 'pgsql';
$password = $ARGV[3] || '';
$dbh_string = "DBI:Pg:database=$database;host=localhost";
last SWITCH;
};
# DEFAULT
print STDERR "Database server type '$dbs' is not supported.";
usage;
}
# The DB handle
my $dbh = DBI->connect($dbh_string, $user, $password) or die "DBI error: DBI->errstr\n";
# The SQL statement
# Easy mapping to columns using the SQL 'AS' syntax. (The column 'serial' must always exist and be lower case, though.)
my $sql = "
SELECT serial, parent AS 'Parent', name AS
'Name', url as 'URL', color AS 'Color',
permission AS 'Permission', visible as 'Visible' FROM treetest ORDER BY Serial
";
# Get the tree
my $tree = Tree::Numbered::Tools->readSQL(
dbh => $dbh,
sql => $sql,
);
# Print the tree
print "Nodes:\n";
foreach ($tree->listChildNumbers) {
print $_, " ", join(' -- ', $tree->follow($_,"Name")), "\n";
}
# Print column names
print "\nSQL statement columns (omitting 'serial' and 'parent'):\n", join(' ', $tree->getColumnNames()), "\n";
# # # Print details about a node
print "\nDetails about node 7:\n";
my @name7 = $tree->follow(7,'Name');
my @url7 = $tree->follow(7,'URL');
print "Name: ", pop(@name7), "\n";
print "URL: ", pop(@url7), "\n";