| 1 |
################################# |
| 2 |
# |
| 3 |
# $Id: DBI.pm,v 1.13 2003/04/08 23:06:45 joko Exp $ |
| 4 |
# |
| 5 |
# $Log: DBI.pm,v $ |
| 6 |
# Revision 1.13 2003/04/08 23:06:45 joko |
| 7 |
# renamed core database helper functions |
| 8 |
# |
| 9 |
# Revision 1.12 2003/01/30 22:28:21 joko |
| 10 |
# + implemented new concrete methods |
| 11 |
# |
| 12 |
# Revision 1.11 2002/12/19 16:31:05 joko |
| 13 |
# + sub dropDb |
| 14 |
# + sub rebuildDb |
| 15 |
# |
| 16 |
# Revision 1.10 2002/12/15 02:02:22 joko |
| 17 |
# + fixed logging-message |
| 18 |
# |
| 19 |
# Revision 1.9 2002/12/05 07:58:20 joko |
| 20 |
# + now using Tie::SecureHash as a base for the COREHANDLE |
| 21 |
# + former public COREHANDLE becomes private _COREHANDLE now |
| 22 |
# |
| 23 |
# Revision 1.8 2002/12/01 22:20:43 joko |
| 24 |
# + sub createDb (from Storage.pm) |
| 25 |
# |
| 26 |
# Revision 1.7 2002/12/01 07:09:09 joko |
| 27 |
# + sub getListFiltered (dummy redirecting to getListUnfiltered) |
| 28 |
# |
| 29 |
# Revision 1.6 2002/12/01 04:46:01 joko |
| 30 |
# + sub eraseAll |
| 31 |
# |
| 32 |
# Revision 1.5 2002/11/29 05:00:26 joko |
| 33 |
# + sub getListUnfiltered |
| 34 |
# + sub sendQuery |
| 35 |
# |
| 36 |
# Revision 1.4 2002/11/17 08:46:42 jonen |
| 37 |
# + wrapped eval around DBI->connect to prevent deaths |
| 38 |
# |
| 39 |
# Revision 1.3 2002/11/17 06:34:39 joko |
| 40 |
# + locator metadata can now be reached via ->{locator} |
| 41 |
# - sub hash2sql now taken from libdb |
| 42 |
# |
| 43 |
# Revision 1.2 2002/10/25 11:43:27 joko |
| 44 |
# + enhanced robustness |
| 45 |
# + more logging for debug-levels |
| 46 |
# |
| 47 |
# Revision 1.1 2002/10/10 03:44:07 cvsjoko |
| 48 |
# + new |
| 49 |
# |
| 50 |
# |
| 51 |
################################# |
| 52 |
|
| 53 |
package Data::Storage::Handler::DBI; |
| 54 |
|
| 55 |
use strict; |
| 56 |
use warnings; |
| 57 |
|
| 58 |
use base ("Data::Storage::Handler::Abstract"); |
| 59 |
|
| 60 |
|
| 61 |
use DBI; |
| 62 |
use Data::Dumper; |
| 63 |
use shortcuts::db qw( hash2sql dsn2dbname ); |
| 64 |
use Data::Storage::Result::DBI; |
| 65 |
|
| 66 |
|
| 67 |
# get logger instance |
| 68 |
my $logger = Log::Dispatch::Config->instance; |
| 69 |
|
| 70 |
|
| 71 |
sub getMetaInfo { |
| 72 |
my $self = shift; |
| 73 |
$logger->debug( __PACKAGE__ . "->getMetaInfo()" ); |
| 74 |
return { |
| 75 |
'disconnectMethod' => 'disconnect', |
| 76 |
}; |
| 77 |
} |
| 78 |
|
| 79 |
sub connect { |
| 80 |
|
| 81 |
my $self = shift; |
| 82 |
|
| 83 |
# create handle |
| 84 |
if ( my $dsn = $self->{locator}->{dbi}->{dsn} ) { |
| 85 |
#if ( my $dsn = $self->{locator}->{dsn} ) { |
| 86 |
$logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" ); |
| 87 |
|
| 88 |
# HACK: |
| 89 |
# set errorhandler before actually calling DBI->connect |
| 90 |
# in order to catch errors from the very beginning |
| 91 |
#DBI->{HandleError} = $self->{dbi}->{HandleError}; |
| 92 |
|
| 93 |
#use Data::Dumper; print Dumper($self->{dbi}); |
| 94 |
|
| 95 |
eval { |
| 96 |
$self->{_COREHANDLE} = DBI->connect( $dsn, '', '', $self->{locator}->{dbi} ); |
| 97 |
if (!$self->{_COREHANDLE}) { |
| 98 |
$logger->warning( __PACKAGE__ . "->connect failed: " . DBI::errstr ); |
| 99 |
return; |
| 100 |
} |
| 101 |
}; |
| 102 |
$logger->warning( __PACKAGE__ . "->connect failed: " . $@ ) if $@; |
| 103 |
|
| 104 |
} |
| 105 |
$self->configureCOREHANDLE(); |
| 106 |
|
| 107 |
$self->{locator}->{status}->{connected} = 1; |
| 108 |
|
| 109 |
return 1; |
| 110 |
|
| 111 |
} |
| 112 |
|
| 113 |
sub configureCOREHANDLE { |
| 114 |
|
| 115 |
my $self = shift; |
| 116 |
|
| 117 |
$logger->debug( __PACKAGE__ . "->configureCOREHANDLE" ); |
| 118 |
|
| 119 |
return if !$self->{_COREHANDLE}; |
| 120 |
|
| 121 |
# apply configured modifications to DBI-handle |
| 122 |
if (exists $self->{locator}->{dbi}->{trace_level} && exists $self->{locator}->{dbi}->{trace_file}) { |
| 123 |
$self->{_COREHANDLE}->trace($self->{locator}->{dbi}->{trace_level}, $self->{locator}->{dbi}->{trace_file}); |
| 124 |
} |
| 125 |
if (exists $self->{locator}->{dbi}->{RaiseError}) { |
| 126 |
$self->{_COREHANDLE}->{RaiseError} = $self->{locator}->{dbi}->{RaiseError}; |
| 127 |
} |
| 128 |
if (exists $self->{locator}->{dbi}->{PrintError}) { |
| 129 |
$self->{_COREHANDLE}->{PrintError} = $self->{locator}->{dbi}->{PrintError}; |
| 130 |
} |
| 131 |
if (exists $self->{locator}->{dbi}->{HandleError}) { |
| 132 |
$self->{_COREHANDLE}->{HandleError} = $self->{locator}->{dbi}->{HandleError}; |
| 133 |
} |
| 134 |
|
| 135 |
} |
| 136 |
|
| 137 |
sub _sendSql { |
| 138 |
my $self = shift; |
| 139 |
my $sql = shift; |
| 140 |
|
| 141 |
# two-level handling for implicit connect: |
| 142 |
# if there's no corehandle ... |
| 143 |
if (!$self->{_COREHANDLE}) { |
| 144 |
# ... try to connect, but ... |
| 145 |
$self->connect(); |
| 146 |
# ... if this still fails, there's something wrong probably, so we won't continue |
| 147 |
if (!$self->{_COREHANDLE}) { |
| 148 |
return; |
| 149 |
} |
| 150 |
} |
| 151 |
|
| 152 |
#print "prepare sql: $sql\n"; |
| 153 |
|
| 154 |
my $sth = $self->{_COREHANDLE}->prepare($sql); |
| 155 |
$sth->execute(); |
| 156 |
return $sth; |
| 157 |
} |
| 158 |
|
| 159 |
sub sendCommand { |
| 160 |
my $self = shift; |
| 161 |
my $command = shift; |
| 162 |
# TODO: when tracing: yes, do actually log this |
| 163 |
#$logger->debug( __PACKAGE__ . "->sendCommand( command $command )" ); |
| 164 |
my $cmdHandle = $self->_sendSql($command); |
| 165 |
my $result = Data::Storage::Result::DBI->new( RESULTHANDLE => $cmdHandle ); |
| 166 |
return $result; |
| 167 |
} |
| 168 |
|
| 169 |
sub getChildNodes { |
| 170 |
my $self = shift; |
| 171 |
my @nodes; |
| 172 |
$logger->debug( __PACKAGE__ . "->getChildNodes()" ); |
| 173 |
my $locator = $self->{locator}; |
| 174 |
#print Dumper($locator); exit; |
| 175 |
if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) { |
| 176 |
my $dbname = dsn2dbname($self->{locator}->{dbi}->{dsn}); |
| 177 |
my $key = "Tables_in_$dbname"; |
| 178 |
while ( my $row = $result->getNextEntry() ) { |
| 179 |
push @nodes, $row->{$key}; |
| 180 |
} |
| 181 |
} |
| 182 |
return \@nodes; |
| 183 |
} |
| 184 |
|
| 185 |
sub getListUnfiltered { |
| 186 |
my $self = shift; |
| 187 |
my $nodename = shift; |
| 188 |
my @list; |
| 189 |
$logger->debug( __PACKAGE__ . "->getListUnfiltered( nodename => '" . $nodename . "' )" ); |
| 190 |
# get list of rows from rdbms by table name |
| 191 |
my $result = $self->sendCommand("SELECT * FROM $nodename"); |
| 192 |
while ( my $row = $result->getNextEntry() ) { |
| 193 |
push @list, $row; |
| 194 |
} |
| 195 |
return \@list; |
| 196 |
} |
| 197 |
|
| 198 |
sub sendQuery { |
| 199 |
my $self = shift; |
| 200 |
my $query = shift; |
| 201 |
|
| 202 |
$logger->debug( __PACKAGE__ . "->sendQuery" ); |
| 203 |
|
| 204 |
my $action = $query->{options}->{action}; |
| 205 |
$action ||= 'load'; |
| 206 |
|
| 207 |
if (my $guid = $query->{options}->{GUID}) { |
| 208 |
$query->{criterias} = [ { key => 'guid', op => 'eq', val => $guid } ]; |
| 209 |
} |
| 210 |
|
| 211 |
# check criterias (load & save) |
| 212 |
#my $sql = "SELECT cs FROM $self->{metainfo}->{$descent}->{node} WHERE $self->{metainfo}->{$descent}->{IdentProvider}->{arg}='$self->{entry}->{source}->{ident}';"; |
| 213 |
#my $result = $self->{metainfo}->{$descent}->{storage}->sendCommand($sql); |
| 214 |
my @crits; |
| 215 |
foreach (@{$query->{criterias}}) { |
| 216 |
my $op = ''; |
| 217 |
$op = '=' if lc $_->{op} eq 'eq'; |
| 218 |
push @crits, "$_->{key}$op'$_->{val}'"; |
| 219 |
} |
| 220 |
# HACK: this is hardcoded ;( expand possibilities! |
| 221 |
my $crit = join(' AND ', @crits); |
| 222 |
|
| 223 |
# check subnodes (load) |
| 224 |
my $subnodes = {}; |
| 225 |
map { $subnodes->{$_}++ } @{$query->{subnodes}}; |
| 226 |
|
| 227 |
# check payload (save) |
| 228 |
#print Dumper($query->{payload}); |
| 229 |
#$subnodes ||= $query->{payload}; |
| 230 |
|
| 231 |
# dispatch action |
| 232 |
if ($action eq 'load') { |
| 233 |
my $sql = hash2sql($query->{node}, $subnodes, 'SELECT', $crit); |
| 234 |
return $self->sendCommand($sql); |
| 235 |
} elsif ($action eq 'save') { |
| 236 |
my $sql = hash2sql($query->{node}, $query->{payload}, 'UPDATE', $crit); |
| 237 |
$self->sendCommand($sql); |
| 238 |
} |
| 239 |
|
| 240 |
} |
| 241 |
|
| 242 |
sub eraseAll { |
| 243 |
my $self = shift; |
| 244 |
my $classname = shift; |
| 245 |
$logger->debug( __PACKAGE__ . "->eraseAll" ); |
| 246 |
my $sql = "DELETE FROM $classname"; |
| 247 |
$self->sendCommand($sql); |
| 248 |
} |
| 249 |
|
| 250 |
# TODO: actually implement the filtering functionality using $this->sendQuery |
| 251 |
sub getListFiltered { |
| 252 |
my $self = shift; |
| 253 |
my $nodename = shift; |
| 254 |
return $self->getListUnfiltered($nodename); |
| 255 |
} |
| 256 |
|
| 257 |
# TODO: do this via a parametrized "$self->connect(<connect just to database server - don't select database>)" |
| 258 |
sub createDb { |
| 259 |
|
| 260 |
my $self = shift; |
| 261 |
|
| 262 |
# get dsn from Data::Storage::Locator instance |
| 263 |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
| 264 |
|
| 265 |
$logger->debug( __PACKAGE__ . "->createDb( dsn $dsn )" ); |
| 266 |
|
| 267 |
# remove database setting from dsn-string |
| 268 |
$dsn =~ s/database=(.+?);//; |
| 269 |
|
| 270 |
# remember extracted database name to know what actually to create right now |
| 271 |
my $database_name = $1; |
| 272 |
|
| 273 |
# flag to indicate goodness |
| 274 |
my $ok; |
| 275 |
|
| 276 |
# connect to database server - don't select/use any specific database |
| 277 |
#if ( my $dbh = DBI->connect($dsn, '', '', { PrintError => 0 } ) ) { |
| 278 |
if ( my $dbh = DBI->connect($dsn, '', '', $self->{locator}->{dbi} ) ) { |
| 279 |
|
| 280 |
if ($database_name) { |
| 281 |
if ($dbh->do("CREATE DATABASE $database_name")) { |
| 282 |
$ok = 1; |
| 283 |
} |
| 284 |
} |
| 285 |
|
| 286 |
$dbh->disconnect(); |
| 287 |
|
| 288 |
} |
| 289 |
|
| 290 |
return $ok; |
| 291 |
|
| 292 |
} |
| 293 |
|
| 294 |
sub getCOREHANDLE2 { |
| 295 |
my $self = shift; |
| 296 |
return $self->{_COREHANDLE}; |
| 297 |
} |
| 298 |
|
| 299 |
sub dropDb { |
| 300 |
my $self = shift; |
| 301 |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
| 302 |
|
| 303 |
$logger->debug( __PACKAGE__ . "->dropDb( dsn $dsn )" ); |
| 304 |
|
| 305 |
$dsn =~ s/database=(.+?);//; |
| 306 |
my $database_name = $1; |
| 307 |
|
| 308 |
my $ok; |
| 309 |
|
| 310 |
if ( my $dbh = DBI->connect($dsn, '', '', { |
| 311 |
PrintError => 0, |
| 312 |
} ) ) { |
| 313 |
if ($database_name) { |
| 314 |
if ($dbh->do("DROP DATABASE $database_name;")) { |
| 315 |
$ok = 1; |
| 316 |
} |
| 317 |
} |
| 318 |
|
| 319 |
$dbh->disconnect(); |
| 320 |
|
| 321 |
} |
| 322 |
|
| 323 |
return $ok; |
| 324 |
} |
| 325 |
|
| 326 |
sub rebuildDb { |
| 327 |
my $self = shift; |
| 328 |
$logger->info( __PACKAGE__ . "->rebuildDb()" ); |
| 329 |
my @results; |
| 330 |
|
| 331 |
# sum up results (bool (0/1)) in array |
| 332 |
#push @results, $self->retreatSchema(); |
| 333 |
push @results, $self->dropDb(); |
| 334 |
push @results, $self->createDb(); |
| 335 |
#push @results, $self->deploySchema(); |
| 336 |
|
| 337 |
# scan array for "bad ones" |
| 338 |
my $res = 1; |
| 339 |
map { |
| 340 |
$res = 0 if (!$_); |
| 341 |
} @results; |
| 342 |
|
| 343 |
return $res; |
| 344 |
} |
| 345 |
|
| 346 |
sub testAvailability { |
| 347 |
my $self = shift; |
| 348 |
my $status = $self->testDsn(); |
| 349 |
$self->{locator}->{status}->{available} = $status; |
| 350 |
return $status; |
| 351 |
} |
| 352 |
|
| 353 |
sub testDsn { |
| 354 |
my $self = shift; |
| 355 |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
| 356 |
my $result; |
| 357 |
if ( my $dbh = DBI->connect($dsn, '', '', { |
| 358 |
PrintError => 0, |
| 359 |
} ) ) { |
| 360 |
|
| 361 |
# TODO: REVIEW |
| 362 |
$dbh->disconnect(); |
| 363 |
|
| 364 |
return 1; |
| 365 |
} else { |
| 366 |
$logger->warning( __PACKAGE__ . "[$self->{locator}->{type}]" . "->testDsn(): " . "DBI-error: " . $DBI::errstr ); |
| 367 |
} |
| 368 |
} |
| 369 |
|
| 370 |
1; |
| 371 |
__END__ |
Parent Directory
| 
Revision Log
