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## ------------------------------------------------------------------------ |
## ------------------------------------------------------------------------ |
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## |
## |
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## $Log$ |
## $Log$ |
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## Revision 1.18 2003/01/30 22:12:17 joko |
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## - removed/refactored old code: ->Data::Storage::Handler::Tangram|DBI |
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## |
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## Revision 1.17 2003/01/30 21:42:22 joko |
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## + minor update: renamed method |
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## |
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## Revision 1.16 2003/01/20 16:52:13 joko |
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## + now using 'DesignPattern::Object' to create a new 'Data::Storage::Handler::Xyz' on demand - before we did this in a hand-rolled fashion |
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## |
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## Revision 1.15 2003/01/19 03:12:59 joko |
## Revision 1.15 2003/01/19 03:12:59 joko |
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## + modified header |
## + modified header |
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## - removed pod-documentation - now in 'Storage.pod' |
## - removed pod-documentation - now in 'Storage.pod' |
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use strict; |
use strict; |
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use warnings; |
use warnings; |
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use Data::Storage::Locator; |
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use Data::Dumper; |
use Data::Dumper; |
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# FIXME: wipe out! |
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# TODO: wipe out! |
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use DBI; |
use DBI; |
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use Data::Storage::Locator; |
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use DesignPattern::Object; |
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# TODO: actually implement level (integrate with Log::Dispatch) |
# TODO: actually implement level (integrate with Log::Dispatch) |
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my $TRACELEVEL = 0; |
my $TRACELEVEL = 0; |
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# advanced logging of AUTOLOAD calls ... |
# advanced logging of AUTOLOAD calls ... |
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# ... nice but do it only when TRACING (TODO) is enabled |
# ... nice but do it only when TRACING (TODO) is enabled |
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if ($TRACELEVEL) { |
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my $logstring = ""; |
my $logstring = ""; |
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$logstring .= __PACKAGE__ . "[$self->{locator}->{type}]" . "->" . $method; |
$logstring .= __PACKAGE__ . "[$self->{locator}->{type}]" . "->" . $method; |
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#print "count: ", $#_, "\n"; |
#print "count: ", $#_, "\n"; |
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# TODO: only ok if logstring doesn't contain |
# TODO: only ok if logstring doesn't contain |
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# e.g. "Data::Storage[Tangram]->insert(SystemEvent=HASH(0x5c0034c)) (AUTOLOAD)" |
# e.g. "Data::Storage[Tangram]->insert(SystemEvent=HASH(0x5c0034c)) (AUTOLOAD)" |
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# but that would be _way_ too specific as long as we don't have an abstract handler for this ;) |
# but that would be _way_ too specific as long as we don't have an abstract handler for this ;) |
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if ($TRACELEVEL) { |
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$logger->debug( $logstring ); |
$logger->debug( $logstring ); |
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#print join('; ', @_); |
#print join('; ', @_); |
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} |
} |
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# filtering AUTOLOAD calls and first-time-touch of the actual storage impl |
# filtering AUTOLOAD calls and first-time-touch of the actual storage impl |
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if ($self->_filter_AUTOLOAD($method)) { |
if ($self->_filter_AUTOLOAD($method)) { |
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#print "_accessStorage\n"; |
#print "=== FILTER!", "\n"; |
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$self->_accessStorage(); |
$self->_accessStorageHandle(); |
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return $self->{STORAGEHANDLE}->$method(@_); |
if ($self->{STORAGEHANDLE}) { |
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return $self->{STORAGEHANDLE}->$method(@_); |
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} else { |
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$logger->critical( __PACKAGE__ . "->AUTOLOAD: ERROR: " . $logstring ); |
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return; |
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} |
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} |
} |
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} |
} |
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} |
} |
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sub normalizeArgs { |
sub _accessStorageHandle { |
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my %args = @_; |
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if (!$args{dsn} && $args{meta}{dsn}) { |
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$args{dsn} = $args{meta}{dsn}; |
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} |
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my @result = %args; |
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return @result; |
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} |
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sub _accessStorage { |
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my $self = shift; |
my $self = shift; |
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# TODO: to some tracelevel! |
# TODO: to some tracelevel! |
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#print "=========== _accessStorage", "\n"; |
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if ($TRACELEVEL) { |
if ($TRACELEVEL) { |
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$logger->debug( __PACKAGE__ . "[$self->{locator}->{type}]" . "->_accessStorage()" ); |
$logger->debug( __PACKAGE__ . "[$self->{locator}->{type}]" . "->_accessStorageHandle()" ); |
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} |
} |
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if (!$self->{STORAGEHANDLE}) { |
if (!$self->{STORAGEHANDLE}) { |
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$self->_createStorageHandle(); |
return $self->_createStorageHandle(); |
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} |
} |
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} |
} |
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sub _createStorageHandle1 { |
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my $self = shift; |
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my $type = $self->{locator}->{type}; |
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$logger->debug( __PACKAGE__ . "[$type]" . "->_createStorageHandle()" ); |
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my $pkg = "Data::Storage::Handler::" . $type . ""; |
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# try to load perl module at runtime |
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my $evalstr = "use $pkg;"; |
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eval($evalstr); |
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if ($@) { |
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$logger->error( __PACKAGE__ . "[$type]" . "->_createStorageHandle(): $@" ); |
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return; |
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} |
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# build up some additional arguments to pass on |
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#my @args = %{$self->{locator}}; |
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my @args = (); |
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# - create new storage handle object |
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# - propagate arguments to handler |
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# - pass locator by reference to be able to store status- or meta-information in it |
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$self->{STORAGEHANDLE} = $pkg->new( locator => $self->{locator}, @args ); |
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} |
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sub _createStorageHandle { |
sub _createStorageHandle { |
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my $self = shift; |
my $self = shift; |
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my $type = $self->{locator}->{type}; |
my $type = $self->{locator}->{type}; |
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$logger->debug( __PACKAGE__ . "[$type]" . "->_createStorageHandle()" ); |
$logger->debug( __PACKAGE__ . "[$type]" . "->_createStorageHandle()" ); |
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#print Dumper($self); |
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#exit; |
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my $pkg = "Data::Storage::Handler::" . $type . ""; |
my $pkg = "Data::Storage::Handler::" . $type . ""; |
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# try to load perl module at runtime |
# try to load perl module at runtime |
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=pod |
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my $evalstr = "use $pkg;"; |
my $evalstr = "use $pkg;"; |
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eval($evalstr); |
eval($evalstr); |
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if ($@) { |
if ($@) { |
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# - propagate arguments to handler |
# - propagate arguments to handler |
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# - pass locator by reference to be able to store status- or meta-information in it |
# - pass locator by reference to be able to store status- or meta-information in it |
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$self->{STORAGEHANDLE} = $pkg->new( locator => $self->{locator}, @args ); |
$self->{STORAGEHANDLE} = $pkg->new( locator => $self->{locator}, @args ); |
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=cut |
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$self->{STORAGEHANDLE} = DesignPattern::Object->fromPackage( $pkg, locator => $self->{locator} ); |
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return 1; |
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} |
} |
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$logger->remove($name); |
$logger->remove($name); |
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} |
} |
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sub getDbName { |
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my $self = shift; |
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my $dsn = $self->{locator}->{dbi}->{dsn}; |
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$dsn =~ m/database=(.+?);/; |
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my $database_name = $1; |
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return $database_name; |
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} |
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sub testAvailability { |
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my $self = shift; |
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my $status = $self->testDsn(); |
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$self->{locator}->{status}->{available} = $status; |
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return $status; |
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} |
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sub isConnected { |
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my $self = shift; |
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# TODO: REVIEW! |
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return 1 if $self->{STORAGEHANDLE}; |
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} |
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sub testDsn { |
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my $self = shift; |
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my $dsn = $self->{locator}->{dbi}->{dsn}; |
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my $result; |
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if ( my $dbh = DBI->connect($dsn, '', '', { |
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PrintError => 0, |
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} ) ) { |
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# TODO: REVIEW |
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$dbh->disconnect(); |
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return 1; |
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} else { |
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$logger->warning( __PACKAGE__ . "[$self->{locator}->{type}]" . "->testDsn(): " . "DBI-error: " . $DBI::errstr ); |
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} |
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} |
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1; |
1; |
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__END__ |
__END__ |