| 1 |
## -------------------------------------------------------------------------------- |
| 2 |
## $Id: libdb.pm,v 1.1 2002/07/19 18:14:03 cvsjoko Exp $ |
| 3 |
## -------------------------------------------------------------------------------- |
| 4 |
## $Log: libdb.pm,v $ |
| 5 |
## Revision 1.1 2002/07/19 18:14:03 cvsjoko |
| 6 |
## no message |
| 7 |
## |
| 8 |
## |
| 9 |
## -------------------------------------------------------------------------------- |
| 10 |
|
| 11 |
package libdb; |
| 12 |
|
| 13 |
use strict; |
| 14 |
use warnings; |
| 15 |
|
| 16 |
use libp; |
| 17 |
use DBI; |
| 18 |
|
| 19 |
require Exporter; |
| 20 |
our @ISA = qw( Exporter ); |
| 21 |
our @EXPORT = qw( |
| 22 |
testDsn hash2Sql |
| 23 |
SQL_INSERT SQL_UPDATE |
| 24 |
connectTarget disconnectTarget sendSql |
| 25 |
dbNow |
| 26 |
getDbNameByDsn sqlDbAction createSqlDb dropSqlDb |
| 27 |
quotesql |
| 28 |
testDsnForTables |
| 29 |
); |
| 30 |
|
| 31 |
use constant SQL_INSERT => 10; |
| 32 |
use constant SQL_UPDATE => 11; |
| 33 |
|
| 34 |
my $dbmeta_ref_cache; |
| 35 |
|
| 36 |
sub testDsn { |
| 37 |
my $dsn = shift; |
| 38 |
my $result; |
| 39 |
if ( my $dbh = DBI->connect($dsn, '', '', { |
| 40 |
PrintError => 0, |
| 41 |
} ) ) { |
| 42 |
$dbh->disconnect(); |
| 43 |
return 1; |
| 44 |
} |
| 45 |
} |
| 46 |
|
| 47 |
sub hash2Sql { |
| 48 |
|
| 49 |
my $table = shift; |
| 50 |
my $hash = shift; |
| 51 |
my $mode = shift; |
| 52 |
my $crit = shift; |
| 53 |
|
| 54 |
my $sql; |
| 55 |
if ($mode == SQL_INSERT) { |
| 56 |
$sql = "INSERT INTO $table (#fields#) VALUES (#values#);"; |
| 57 |
} |
| 58 |
if ($mode == SQL_UPDATE) { |
| 59 |
$sql = "UPDATE $table SET #fields-values# WHERE $crit;"; |
| 60 |
} |
| 61 |
|
| 62 |
my (@fields, @values); |
| 63 |
foreach my $key (keys %{$hash}) { |
| 64 |
push @fields, $key; |
| 65 |
push @values, $hash->{$key}; |
| 66 |
} |
| 67 |
# quote each element |
| 68 |
map { if (defined $_) { $_ = "'$_'" } else { $_ = "null" } } @values; |
| 69 |
|
| 70 |
my $fields = join(', ', @fields); |
| 71 |
my $values = join(', ', @values); |
| 72 |
my $fields_values = ''; |
| 73 |
my $fc = 0; |
| 74 |
foreach (@fields) { |
| 75 |
$fields_values .= $_ . '=' . $values[$fc] . ', '; |
| 76 |
$fc++; |
| 77 |
} |
| 78 |
$fields_values = substr($fields_values, 0, -2); |
| 79 |
|
| 80 |
$sql =~ s/#fields#/$fields/; |
| 81 |
$sql =~ s/#values#/$values/; |
| 82 |
$sql =~ s/#fields-values#/$fields_values/; |
| 83 |
|
| 84 |
return $sql; |
| 85 |
} |
| 86 |
|
| 87 |
sub patch_dbmeta { |
| 88 |
|
| 89 |
my $dbmeta = shift; |
| 90 |
|
| 91 |
if ($dbmeta =~ m/^dbi:/) { |
| 92 |
$dbmeta = { |
| 93 |
dsn => $dbmeta, |
| 94 |
trace_level => 0, |
| 95 |
trace_file => undef, |
| 96 |
}; |
| 97 |
} |
| 98 |
|
| 99 |
return $dbmeta; |
| 100 |
|
| 101 |
} |
| 102 |
|
| 103 |
sub connectTarget { |
| 104 |
my $dbmeta = shift; |
| 105 |
croak "please supply a dsn or a \"dbmeta\"-hash" if (!$dbmeta); |
| 106 |
$dbmeta = patch_dbmeta($dbmeta); |
| 107 |
if (!$dbmeta->{connected}) { |
| 108 |
if ($dbmeta->{dbh} = DBI->connect($dbmeta->{dsn}, '', '', { PrintError => 0 } )) { |
| 109 |
$dbmeta->{dbh}->trace($dbmeta->{trace_level}, $dbmeta->{trace_file}); |
| 110 |
$dbmeta->{dbh}->{PrintError} = 0; |
| 111 |
$dbmeta->{connected} = 1; |
| 112 |
$dbmeta_ref_cache = $dbmeta; |
| 113 |
return 1; |
| 114 |
} |
| 115 |
} |
| 116 |
} |
| 117 |
|
| 118 |
sub disconnectTarget { |
| 119 |
#my $dbmeta = shift; |
| 120 |
#croak "please supply a \"dbmeta\"-hash" if (!$dbmeta); |
| 121 |
#$dbmeta = patch_dbmeta($dbmeta); |
| 122 |
#$dbmeta->{dbh} && $dbmeta->{dbh}->disconnect(); |
| 123 |
my $dbmeta = $dbmeta_ref_cache; |
| 124 |
$dbmeta->{dbh} && $dbmeta->{dbh}->disconnect(); |
| 125 |
undef($dbmeta_ref_cache); |
| 126 |
} |
| 127 |
|
| 128 |
sub sendSql { |
| 129 |
my $sql = shift; |
| 130 |
my $dbmeta_ref = shift; |
| 131 |
if (!$dbmeta_ref) { |
| 132 |
$dbmeta_ref = $dbmeta_ref_cache; |
| 133 |
} |
| 134 |
#print "sql: $sql", "\n"; |
| 135 |
if (!$dbmeta_ref->{connected}) { |
| 136 |
print "not connected!", "\n"; |
| 137 |
return 0; |
| 138 |
} |
| 139 |
if (my $result = $dbmeta_ref->{dbh}->prepare($sql)) { |
| 140 |
if ($result->execute()) { |
| 141 |
return $result; |
| 142 |
} |
| 143 |
} |
| 144 |
} |
| 145 |
|
| 146 |
sub dbNow { |
| 147 |
#my $now_string = strftime "%a %b %e %H:%M:%S %Y", localtime; |
| 148 |
my $now_string = strftime("%Y-%m-%d %H:%M:%S", localtime); |
| 149 |
return $now_string; |
| 150 |
} |
| 151 |
|
| 152 |
|
| 153 |
sub getDbNameByDsn { |
| 154 |
my $dsn = shift; |
| 155 |
$dsn =~ m/database=(.+?);/; |
| 156 |
my $database_name = $1; |
| 157 |
return $database_name; |
| 158 |
} |
| 159 |
|
| 160 |
sub sqlDbAction { |
| 161 |
my $dsn = shift; |
| 162 |
$dsn =~ s/database=.+?;//; |
| 163 |
my $sql = shift; |
| 164 |
my $dbmeta = { |
| 165 |
dsn => $dsn, |
| 166 |
trace_level => 1, |
| 167 |
trace_file => 'dbitrace', |
| 168 |
}; |
| 169 |
my $bool_ok; |
| 170 |
if (connectTarget($dbmeta)) { |
| 171 |
sendSql($sql); |
| 172 |
#print "state: ", $dbmeta->{dbh}->errstr, "\n"; |
| 173 |
$bool_ok = ($dbmeta->{dbh} && $dbmeta->{dbh}->state && !$dbmeta->{dbh}->err); |
| 174 |
disconnectTarget($dbmeta); |
| 175 |
} |
| 176 |
return $bool_ok; |
| 177 |
} |
| 178 |
|
| 179 |
sub createSqlDb { |
| 180 |
my $dsn = shift; |
| 181 |
my $dbname = getDbNameByDsn($dsn); |
| 182 |
print " - creating rdbms-database $dbname ($dsn) ..."; |
| 183 |
my $sql; |
| 184 |
$sql = "CREATE DATABASE $dbname;"; |
| 185 |
if ( sqlDbAction($dsn, $sql) ) { |
| 186 |
print "ok"; |
| 187 |
} else { |
| 188 |
print "failed"; |
| 189 |
} |
| 190 |
print "\n"; |
| 191 |
} |
| 192 |
|
| 193 |
sub dropSqlDb { |
| 194 |
my $dsn = shift; |
| 195 |
my $dbname = getDbNameByDsn($dsn); |
| 196 |
print " - dropping database $dbname", "\n"; |
| 197 |
my $sql; |
| 198 |
$sql = "DROP DATABASE $dbname;"; |
| 199 |
sqlDbAction($dsn, $sql); |
| 200 |
} |
| 201 |
|
| 202 |
sub quotesql { |
| 203 |
my $string = shift; |
| 204 |
$string =~ s/'/\\'/g; |
| 205 |
return $string; |
| 206 |
} |
| 207 |
|
| 208 |
sub testDsnForTables { |
| 209 |
my $dsn = shift; |
| 210 |
connectTarget($dsn); |
| 211 |
my $result = sendSql('SHOW TABLES;'); |
| 212 |
my $bool_tablesHere = $result->fetchrow_hashref(); |
| 213 |
$result->finish(); |
| 214 |
disconnectTarget($dsn); |
| 215 |
return 1 if ($bool_tablesHere); |
| 216 |
} |
| 217 |
|
| 218 |
1; |
Parent Directory
| 
Revision Log
