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################################# |
############################################ |
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# |
# |
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# $Id$ |
# $Id$ |
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# |
# |
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# $Log$ |
# $Log$ |
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# Revision 1.8 2002/12/01 22:25:51 joko |
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# + now utilizing metadata from storage locator when connecting to DBI in "raw"-mode |
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# |
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# Revision 1.7 2002/12/01 04:46:19 joko |
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# + sub eraseAll |
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# |
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# Revision 1.6 2002/11/29 05:02:30 joko |
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# - sub getNewPerlObjectByPkgName (moved to libp.pm) |
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# + sub getMetaInfo |
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# - sub existsChildNode (moved to Abstract.pm) |
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# + sub getListUnfiltered |
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# + sub getListFiltered |
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# + sub createCursor |
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# + sub createSet |
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# + sub sendQuery |
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# |
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# Revision 1.5 2002/11/17 06:35:18 joko |
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# + locator metadata can now be reached via ->{locator} |
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# - getChildNodes is now wrapped via COREHANDLE |
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# |
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# Revision 1.4 2002/10/25 11:44:44 joko |
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# + sub _initSchema |
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# + sub existsChildNode |
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# + sub testIntegrity |
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# + sub rebuildDbAndSchema |
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# |
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# Revision 1.3 2002/10/17 03:56:55 joko |
# Revision 1.3 2002/10/17 03:56:55 joko |
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# + bugfix: trapped eval error |
# + bugfix: trapped eval error |
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# |
# |
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# Revision 1.1 2002/10/10 03:44:07 cvsjoko |
# Revision 1.1 2002/10/10 03:44:07 cvsjoko |
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# + new |
# + new |
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# |
# |
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# |
############################################ |
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################################# |
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package Data::Storage::Handler::Tangram; |
package Data::Storage::Handler::Tangram; |
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use Tangram; |
use Tangram; |
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use Data::Dumper; |
use Data::Dumper; |
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use libp qw( getNewPerlObjectByPkgName ); |
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use Data::Storage::Result::Tangram; |
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use Data::Compare::Struct qw( isEmpty ); |
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# get logger instance |
# get logger instance |
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my $logger = Log::Dispatch::Config->instance; |
my $logger = Log::Dispatch::Config->instance; |
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our $metainfo = { |
sub getMetaInfo { |
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'disconnectMethod' => 'disconnect', |
my $self = shift; |
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}; |
$logger->debug( __PACKAGE__ . "->getMetaInfo()" ); |
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return { |
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'disconnectMethod' => 'disconnect', |
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}; |
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} |
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sub getNewPerlObjectByPkgName { |
sub _initSchema { |
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my $pkgname = shift; |
my $self = shift; |
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my $args = shift; |
$logger->debug( __PACKAGE__ . "->_initSchema()" ); |
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$logger->debug( __PACKAGE__ . "->getNewPerlObjectByPkgName( pkgname $pkgname args $args )" ); |
#if (!$self->{schema_tangram}) { |
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my $evstring = "use $pkgname;"; |
my $obj = getNewPerlObjectByPkgName($self->{locator}->{schema}, { EXPORT_OBJECTS => $self->{locator}->{classnames}, want_transactions => $self->{locator}->{want_transactions} } ); |
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eval($evstring); |
$self->{schema_tangram} = $obj->getSchema(); |
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$@ && $logger->error( __PACKAGE__ . ':' . __LINE__ . " Error in eval: " . $@ ); |
#} |
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return $pkgname->new($args); |
if (!$self->{schema_tangram}) { |
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$logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" ); |
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return 0; |
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} |
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return 1; |
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} |
} |
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sub connect { |
sub connect { |
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my $self = shift; |
my $self = shift; |
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my $dsn = shift; |
my $dsn = shift; |
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$dsn ||= $self->{dbi}->{dsn}; |
$dsn ||= $self->{locator}->{dbi}->{dsn}; |
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$logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" ); |
$logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" ); |
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# return; |
# return; |
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# } |
# } |
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my $obj = getNewPerlObjectByPkgName($self->{schema}, { EXPORT_OBJECTS => $self->{classnames} } ); |
return unless $self->_initSchema(); |
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$self->{schema_tangram} = $obj->getSchema(); |
|
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# create the main tangram storage object |
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#$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn ); |
#$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn ); |
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$self->{COREHANDLE} = Tangram::Relational->connect( $self->{schema_tangram}, $dsn ); |
$self->{COREHANDLE} = Tangram::Relational->connect( $self->{schema_tangram}, $dsn ); |
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# some attempts for configuring the wrapped underlying dbi..... |
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#$self->{STORAGEHANDLE_UNDERLYING} = $self->getUnderlyingStorage(); |
#$self->{STORAGEHANDLE_UNDERLYING} = $self->getUnderlyingStorage(); |
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#$self->{STORAGEHANDLE_UNDERLYING}->_configureCOREHANDLE(); |
#$self->{STORAGEHANDLE_UNDERLYING}->_configureCOREHANDLE(); |
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#$self->_configureUnderlyingStorage; |
#$self->_configureUnderlyingStorage; |
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# ..... encapsulation wins! |
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$self->configureCOREHANDLE(); |
$self->configureCOREHANDLE(); |
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$self->{locator}->{status}->{connected} = 1; |
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return 1; |
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} |
} |
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sub getChildNodes { |
sub getChildNodes { |
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my $self = shift; |
my $self = shift; |
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my @nodes; |
my @nodes; |
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$logger->debug( __PACKAGE__ . "->getChildNodes()" ); |
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# create new DBI - Data::Storage - object from already connected DBI::db - handle inside the current COREHANDLE |
# create new DBI - Data::Storage - object from already connected DBI::db - handle inside the current COREHANDLE |
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#my $loc = new Data::Storage::Locator( type => "DBI", dbi => { db => $self->{COREHANDLE}->{db} }); |
#my $loc = new Data::Storage::Locator( type => "DBI", dbi => { db => $self->{COREHANDLE}->{db} }); |
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#my $loc = new Data::Storage::Locator( type => "DBI", COREHANDLE => $self->{COREHANDLE}->{db} ); |
#my $loc = new Data::Storage::Locator( type => "DBI", COREHANDLE => $self->{COREHANDLE}->{db} ); |
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# todo: should we retrieve information from the schema here |
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# rather than poorly getting table names from underlying dbi? |
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my $storage = $self->_getSubLayerHandle(); |
my $storage = $self->_getSubLayerHandle(); |
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@nodes = @{$storage->getChildNodes()}; |
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#$storage->_configureCOREHANDLE(); |
#$storage->_configureCOREHANDLE(); |
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#print "getchildnodes\n"; |
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#print Dumper($self); |
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#if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) { |
#if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) { |
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if (my $result = $storage->sendCommand( 'SHOW TABLES;' ) ) { |
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while ( my $row = $result->_getNextEntry() ) { |
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push @nodes, $row; |
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} |
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} |
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$storage->disconnect(); |
# TODO: REVIEW |
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#$storage->disconnect(); |
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$self->{meta}->{childnodes} = \@nodes; |
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return \@nodes; |
return \@nodes; |
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} |
} |
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sub testIntegrity { |
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my $self = shift; |
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$logger->debug( __PACKAGE__ . "->testIntegrity()" ); |
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# 1st test: are there tables? |
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if (!$self->getChildNodes()) { |
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$logger->warning( __PACKAGE__ . "->testIntegrity no childnodes exist" ); |
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return; |
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} |
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# 2nd test: is there a table named "Tangram"? |
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if (!$self->existsChildNode("Tangram")) { |
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$logger->warning( __PACKAGE__ . "->testIntegrity childnode \"Tangram\" doesn't exist" ); |
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return; |
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} |
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$self->{locator}->{status}->{integrity} = 1; |
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return 1; |
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} |
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sub _getSubLayerHandle { |
sub _getSubLayerHandle { |
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my $self = shift; |
my $self = shift; |
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use Data::Dumper; |
$logger->debug( __PACKAGE__ . "->_getSubLayerHandle()" ); |
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#print Dumper($self); |
#print Dumper($self); |
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# hack, make more generic! |
# hack, make more generic! |
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if (!$self->{STORAGE_SUBLAYER}) { |
if (!$self->{dataStorageLayer}) { |
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my $loc = Data::Storage::Locator->new( type => "DBI", dbi => $self->{dbi}, COREHANDLE => $self->{COREHANDLE}->{db} ); |
$logger->debug( __PACKAGE__ . "->_getSubLayerHandle() creating new dataStorageLayer" ); |
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$self->{STORAGE_SUBLAYER} = Data::Storage->new( $loc, { protected => 1 } ); |
#my $loc = Data::Storage::Locator->new( type => "DBI", dbi => $self->{dbi}, COREHANDLE => $self->{COREHANDLE}->{db} ); |
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my $loc = Data::Storage::Locator->new( { type => "DBI", dbi => $self->{locator}->{dbi} } ); |
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$self->{dataStorageLayer} = Data::Storage->new( $loc, { protected => 1 } ); |
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#$self->{STORAGE_UNDER_THE_HOOD}->{STORAGEHANDLE}->_configureCOREHANDLE(); |
#$self->{STORAGE_UNDER_THE_HOOD}->{STORAGEHANDLE}->_configureCOREHANDLE(); |
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#$self->{STORAGE_UNDER_THE_HOOD}->_configureCOREHANDLE(); |
#$self->{STORAGE_UNDER_THE_HOOD}->_configureCOREHANDLE(); |
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} |
} |
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#print Dumper($self->{STORAGE_UNDER_THE_HOOD}); |
#print Dumper($self->{STORAGE_UNDER_THE_HOOD}); |
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return $self->{STORAGE_SUBLAYER}; |
return $self->{dataStorageLayer}; |
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} |
} |
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sub _configureUnderlyingStorage { |
sub _configureUnderlyingStorage { |
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my $self = shift; |
my $self = shift; |
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$logger->debug( __PACKAGE__ . "->_configureUnderlyingStorage" ); |
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$self->_configureCOREHANDLE_DBI(); |
$self->_configureCOREHANDLE_DBI(); |
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return; |
return; |
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my $self = shift; |
my $self = shift; |
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$logger->debug( __PACKAGE__ . "->_configureCOREHANDLE" ); |
$logger->debug( __PACKAGE__ . "->configureCOREHANDLE" ); |
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#my $subLayer = $self->_getSubLayerHandle(); |
#my $subLayer = $self->_getSubLayerHandle(); |
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sub deploySchema { |
sub deploySchema { |
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my $self = shift; |
my $self = shift; |
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#my $dsn = $self->{locator}->{dbi}->{dsn}; |
my $args = shift; |
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my $dsn = $self->{dbi}->{dsn}; |
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my $dsn = $self->{locator}->{dbi}->{dsn}; |
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$logger->debug( __PACKAGE__ . "->deploySchema( dsn $dsn )" ); |
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my $ok; |
my $ok; |
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if ( my $dbh = DBI->connect($dsn, '', '', { |
if ( my $dbh = DBI->connect($dsn, '', '', $self->{locator}->{dbi} ) ) { |
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PrintError => 0, |
return unless $self->_initSchema(); |
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} ) ) { |
$ok = Tangram::Relational->deploy($self->{schema_tangram}, $dbh ); |
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$ok = Tangram::Relational->deploy($self->{schema}, $dbh ); |
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$dbh->disconnect(); |
$dbh->disconnect(); |
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} |
} |
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return $ok; |
return $ok; |
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} |
} |
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sub retreatSchema { |
sub retreatSchema { |
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print "retreat\n"; |
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my $self = shift; |
my $self = shift; |
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#my $dsn = $self->{locator}->{dbi}->{dsn}; |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
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my $dsn = $self->{dbi}->{dsn}; |
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$logger->debug( __PACKAGE__ . "->retreatSchema( dsn $dsn )" ); |
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my $ok; |
my $ok; |
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if ( my $dbh = DBI->connect($dsn, '', '', { |
if ( my $dbh = DBI->connect($dsn, '', '', $self->{locator}->{dbi} ) ) { |
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PrintError => 0, |
|
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} ) ) { |
return unless $self->_initSchema(); |
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$ok = Tangram::Relational->retreat($self->{schema}, $dbh ); |
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#use Data::Dumper; print Dumper($self); |
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$self->{dataStorageLayer}->removeLogDispatchHandler("Tangram11"); |
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$ok = Tangram::Relational->retreat($self->{schema_tangram}, $dbh ); |
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# answer "$ok=2" means "maybe" for now - we have to patch this to a constant here because... |
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# - ... Tangram::Relational->retreat doesn't seem to return a valid status |
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# - possible improvement: |
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# - test this by checking for count of tables in database |
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# - problem with this: there may be some left not having been included to the schema |
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# - maybe better: use "->getChildNodes"? |
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$ok = 2; |
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$dbh->disconnect(); |
$dbh->disconnect(); |
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} |
} |
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return $ok; |
return $ok; |
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} |
} |
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sub rebuildDbAndSchema { |
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my $self = shift; |
294 |
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$logger->info( __PACKAGE__ . "->rebuildDbAndSchema()" ); |
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my @results; |
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# sum up results (bool (0/1)) in array |
298 |
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push @results, $self->retreatSchema(); |
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push @results, $self->{dataStorageLayer}->dropDb(); |
300 |
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push @results, $self->{dataStorageLayer}->createDb(); |
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push @results, $self->deploySchema(); |
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# scan array for "bad ones" |
304 |
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my $res = 1; |
305 |
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map { |
306 |
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$res = 0 if (!$_); |
307 |
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} @results; |
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return $res; |
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} |
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sub getListUnfiltered { |
313 |
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my $self = shift; |
314 |
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my $nodename = shift; |
315 |
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my @results; |
316 |
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$logger->debug( __PACKAGE__ . "->getListUnfiltered( nodename => '" . $nodename . "' )" ); |
317 |
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# get set of objects from odbms by object name |
318 |
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my $object_set = $self->{COREHANDLE}->remote($nodename); |
319 |
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@results = $self->{COREHANDLE}->select($object_set); |
320 |
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return \@results; |
321 |
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} |
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sub getListFiltered { |
324 |
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my $self = shift; |
325 |
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# redirect to unfiltered mode |
327 |
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#return $self->getListUnfiltered(@_); |
328 |
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my $nodename = shift; |
330 |
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my $filters = shift; |
331 |
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my @results; |
332 |
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$logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" ); |
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#print Dumper($filters); |
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my @tfilters; |
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338 |
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foreach my $filter (@$filters) { |
339 |
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340 |
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# get filter - TODO: for each filter |
341 |
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#my $filter = $filters->[0]; |
342 |
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343 |
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# build filter |
344 |
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my $lexpr = $filter->{key}; |
345 |
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#my $op = $filter->{op}; |
346 |
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my $op = '='; |
347 |
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my $rexpr = $filter->{val}; |
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my $tight = 100; |
349 |
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350 |
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# my $tfilter = Tangram::Filter->new( |
351 |
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# expr => "t1.$lexpr $op '$rexpr'", |
352 |
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# tight => $tight, |
353 |
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# objects => $objects, |
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# ); |
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# HACK: build eval-string (sorry) to get filtered list - please give advice here |
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push @tfilters, '$remote->{' . $filter->{key} . '}' . " $filter->{op} '$filter->{val}'"; |
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} |
360 |
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my $tfilter = join(' & ', @tfilters); |
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# get set of objects from odbms by object name |
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my $remote = $self->{COREHANDLE}->remote($nodename); |
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# was: |
367 |
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#@results = $self->{COREHANDLE}->select($object_set, $tfilter); |
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369 |
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# is: |
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# HACK: build eval-string (sorry) to get filtered list - please give advice here |
371 |
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my $evalstring = 'return $self->{COREHANDLE}->select($remote, ' . $tfilter . ');'; |
372 |
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373 |
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# get filtered list/set |
374 |
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@results = eval($evalstring); |
375 |
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die $@ if $@; |
376 |
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377 |
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return \@results; |
378 |
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} |
379 |
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380 |
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sub createCursor { |
381 |
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my $self = shift; |
382 |
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my $node = shift; |
383 |
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my $cmdHandle = $self->{COREHANDLE}->cursor($node); |
384 |
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my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $cmdHandle ); |
385 |
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return $result; |
386 |
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} |
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388 |
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sub createSet { |
389 |
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my $self = shift; |
390 |
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my @objects = @_; |
391 |
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my $rh = Set::Object->new(); |
392 |
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foreach (@objects) { |
393 |
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#print Dumper($_); |
394 |
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$rh->insert($_) if !isEmpty($_); |
395 |
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} |
396 |
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#print Dumper($rh->members()); |
397 |
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my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $rh ); |
398 |
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return $result; |
399 |
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} |
400 |
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sub sendQuery { |
402 |
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my $self = shift; |
403 |
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my $query = shift; |
404 |
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#my $sql = "SELECT cs FROM $self->{metainfo}->{$descent}->{node} WHERE $self->{metainfo}->{$descent}->{IdentProvider}->{arg}='$self->{entry}->{source}->{ident}';"; |
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#my $result = $self->{metainfo}->{$descent}->{storage}->sendCommand($sql); |
406 |
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407 |
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#print Dumper($query); |
408 |
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409 |
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# HACK: special case: querying by id does not translate into a common tangram query |
410 |
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# just load the object by given id(ent) |
411 |
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if ($query->{criterias}->[0]->{key} eq 'id' && $query->{criterias}->[0]->{op} eq 'eq') { |
412 |
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#print "LOAD!!!", "\n"; |
413 |
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#exit; |
414 |
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#return Set::Object->new( $self->{COREHANDLE}->load($query->{criterias}->[0]->{val}) ); |
415 |
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my $ident = $query->{criterias}->[0]->{val}; |
416 |
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#print "load obj", "\n"; |
417 |
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#return $self->createSet() if $ident == 5; |
418 |
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my $object = $self->{COREHANDLE}->load($ident); |
419 |
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#print "get id", "\n"; |
420 |
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my $oid = $self->{COREHANDLE}->id($object); |
421 |
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return $self->createSet($object); |
422 |
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#return $self->createSet( $self->{COREHANDLE}->load('300090018') ); |
423 |
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} |
424 |
|
|
425 |
|
die("This should not be reached for now - redirect to \$self->getListFiltered() here!"); |
426 |
|
|
427 |
|
# TODO: do a common tangram query here |
428 |
|
|
429 |
|
my @crits; |
430 |
|
foreach (@{$query->{criterias}}) { |
431 |
|
my $op = ''; |
432 |
|
$op = '=' if lc $_->{op} eq 'eq'; |
433 |
|
push @crits, "$_->{key}$op'$_->{val}'"; |
434 |
|
} |
435 |
|
my $subnodes = {}; |
436 |
|
map { $subnodes->{$_}++ } @{$query->{subnodes}}; |
437 |
|
# HACK: this is hardcoded ;( expand possibilities! |
438 |
|
#my $crit = join(' AND ', @crits); |
439 |
|
#my $sql = hash2Sql($query->{node}, $subnodes, 'SELECT', $crit); |
440 |
|
#return $self->sendCommand($sql); |
441 |
|
#my $h = $self->{COREHANDLE}->remote($query->{node}); |
442 |
|
#my $res = $self->{COREHANDLE}->select($h, $h->{); |
443 |
|
return $self->createCursor($query->{node}); |
444 |
|
} |
445 |
|
|
446 |
|
sub eraseAll { |
447 |
|
my $self = shift; |
448 |
|
my $classname = shift; |
449 |
|
my $remote = $self->{storage}->remote($classname); |
450 |
|
my @objs = $self->{storage}->select($remote); |
451 |
|
$self->{COREHANDLE}->erase(@objs); |
452 |
|
} |
453 |
|
|
454 |
|
sub createDb { |
455 |
|
my $self = shift; |
456 |
|
my $storage = $self->_getSubLayerHandle(); |
457 |
|
return $storage->createDb(); |
458 |
|
} |
459 |
|
|
460 |
1; |
1; |