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################################# |
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# |
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# $Id: DBI.pm,v 1.3 2002/11/17 06:34:39 joko Exp $ |
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# |
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# $Log: DBI.pm,v $ |
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# Revision 1.3 2002/11/17 06:34:39 joko |
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# + locator metadata can now be reached via ->{locator} |
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# - sub hash2sql now taken from libdb |
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# |
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# Revision 1.2 2002/10/25 11:43:27 joko |
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# + enhanced robustness |
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# + more logging for debug-levels |
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# |
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# Revision 1.1 2002/10/10 03:44:07 cvsjoko |
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# + new |
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# |
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# |
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################################# |
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|
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package Data::Storage::Handler::DBI; |
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|
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use strict; |
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use warnings; |
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|
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use base ("Data::Storage::Handler::Abstract"); |
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|
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use DBI; |
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use Data::Dumper; |
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use libdb; |
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|
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# get logger instance |
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my $logger = Log::Dispatch::Config->instance; |
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|
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|
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our $metainfo = { |
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'disconnectMethod' => 'disconnect', |
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}; |
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|
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sub connect { |
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|
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my $self = shift; |
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|
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# create handle |
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if ( my $dsn = $self->{locator}->{dbi}->{dsn} ) { |
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#if ( my $dsn = $self->{locator}->{dsn} ) { |
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$logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" ); |
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|
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# HACK: |
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# set errorhandler before actually calling DBI->connect |
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# in order to catch errors from the very beginning |
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#DBI->{HandleError} = $self->{dbi}->{HandleError}; |
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|
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#use Data::Dumper; print Dumper($self->{dbi}); |
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|
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eval { |
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$self->{COREHANDLE} = DBI->connect( $dsn, '', '', $self->{locator}->{dbi} ); |
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if (!$self->{COREHANDLE}) { |
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$logger->warning( __PACKAGE__ . "->connect failed: " . DBI::errstr ); |
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return; |
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} |
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}; |
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$logger->warning( __PACKAGE__ . "->connect failed: " . $@ ) if $@; |
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|
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} |
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$self->configureCOREHANDLE(); |
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|
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$self->{locator}->{status}->{connected} = 1; |
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|
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return 1; |
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|
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} |
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|
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sub configureCOREHANDLE { |
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|
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my $self = shift; |
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|
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$logger->debug( __PACKAGE__ . "->configureCOREHANDLE" ); |
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|
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# apply configured modifications |
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if (exists $self->{locator}->{dbi}->{trace_level} && exists $self->{locator}->{dbi}->{trace_file}) { |
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$self->{COREHANDLE}->trace($self->{locator}->{dbi}->{trace_level}, $self->{locator}->{dbi}->{trace_file}); |
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} |
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if (exists $self->{locator}->{dbi}->{RaiseError}) { |
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$self->{COREHANDLE}->{RaiseError} = $self->{locator}->{dbi}->{RaiseError}; |
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} |
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if (exists $self->{locator}->{dbi}->{PrintError}) { |
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$self->{COREHANDLE}->{PrintError} = $self->{locator}->{dbi}->{PrintError}; |
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} |
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if (exists $self->{locator}->{dbi}->{HandleError}) { |
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$self->{COREHANDLE}->{HandleError} = $self->{locator}->{dbi}->{HandleError}; |
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} |
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|
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} |
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|
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sub _sendSql { |
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my $self = shift; |
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my $sql = shift; |
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|
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# two-level handling for implicit connect: |
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# if there's no corehandle ... |
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if (!$self->{COREHANDLE}) { |
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# ... try to connect, but ... |
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$self->connect(); |
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# ... if this still fails, there's something wrong probably, so we won't continue |
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if (!$self->{COREHANDLE}) { |
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return; |
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} |
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} |
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|
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#print "prepare sql: $sql\n"; |
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|
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my $sth = $self->{COREHANDLE}->prepare($sql); |
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$sth->execute(); |
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return $sth; |
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} |
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|
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sub sendCommand { |
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my $self = shift; |
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my $command = shift; |
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#$logger->debug( __PACKAGE__ . "->sendCommand( command $command )" ); |
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my $cmdHandle = $self->_sendSql($command); |
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my $result = Data::Storage::Result::DBI->new( RESULTHANDLE => $cmdHandle ); |
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return $result; |
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} |
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|
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sub quoteSql { |
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my $self = shift; |
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my $string = shift; |
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if ($string) { |
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$string =~ s/'/\\'/g; |
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} |
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return $string; |
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} |
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|
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|
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sub getChildNodes { |
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|
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my $self = shift; |
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my @nodes; |
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|
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$logger->debug( __PACKAGE__ . "->getChildNodes()" ); |
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|
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if (my $result = $self->sendCommand( 'SHOW TABLES;' ) ) { |
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my $dbname = getDbNameByDsn($self->{locator}->{dbi}->{dsn}); |
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my $key = "Tables_in_$dbname"; |
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while ( my $row = $result->_getNextEntry() ) { |
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push @nodes, $row->{$key}; |
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} |
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} |
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|
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return \@nodes; |
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|
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} |
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|
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|
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|
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|
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package Data::Storage::Result::DBI; |
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|
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use strict; |
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use warnings; |
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|
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use base ("Data::Storage::Result"); |
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|
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sub DESTROY { |
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my $self = shift; |
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#$logger->debug( __PACKAGE__ . "->" . "DESTROY" ); |
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$self->{RESULTHANDLE} && $self->{RESULTHANDLE}->finish(); |
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} |
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|
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sub _getNextEntry { |
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my $self = shift; |
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$self->{RESULTHANDLE} && return $self->{RESULTHANDLE}->fetchrow_hashref; |
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} |
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