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# |
# |
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# See COPYRIGHT section in pod text below for usage and distribution rights. |
# See COPYRIGHT section in pod text below for usage and distribution rights. |
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# |
# |
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################################# |
############################################ |
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# |
# |
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# $Log$ |
# $Log$ |
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# Revision 1.10 2002/12/07 03:37:23 joko |
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# + updated pod |
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# |
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# Revision 1.9 2002/12/01 22:15:45 joko |
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# - sub createDb: moved to handler |
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# |
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# Revision 1.8 2002/11/29 04:48:23 joko |
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# + updated pod |
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# |
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# Revision 1.7 2002/11/17 06:07:18 joko |
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# + creating the handler is easier than proposed first - for now :-) |
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# + sub testAvailability |
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# |
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# Revision 1.6 2002/11/09 01:04:58 joko |
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# + updated pod |
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# |
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# Revision 1.5 2002/10/29 19:24:18 joko |
# Revision 1.5 2002/10/29 19:24:18 joko |
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# - reduced logging |
# - reduced logging |
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# + added some pod |
# + added some pod |
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# Revision 1.1 2002/10/10 03:43:12 cvsjoko |
# Revision 1.1 2002/10/10 03:43:12 cvsjoko |
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# + new |
# + new |
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# |
# |
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################################# |
############################################ |
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# aim_V1: should encapsulate Tangram, DBI, DBD::CSV and LWP:: to access them in an unordinary way ;) |
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# aim_V2: introduce a generic layered structure, refactor *SUBLAYER*-stuff, make (e.g.) this possible: |
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# - Perl Data::Storage[DBD::CSV] -> Perl LWP:: -> Internet HTTP/FTP/* -> Host Daemon -> csv-file |
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BEGIN { |
BEGIN { |
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$Data::Storage::VERSION = 0.01; |
$Data::Storage::VERSION = 0.02; |
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} |
} |
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Data::Storage - Interface for accessing various Storage implementations for Perl in an independent way |
Data::Storage - Interface for accessing various Storage implementations for Perl in an independent way |
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=head1 AIMS |
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- should encapsulate Tangram, DBI, DBD::CSV and LWP:: to access them in an unordinary (more convenient) way ;) |
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- introduce a generic layered structure, refactor *SUBLAYER*-stuff, make (e.g.) this possible: |
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Perl Data::Storage[DBD::CSV] -> Perl LWP:: -> Internet HTTP/FTP/* -> Host Daemon -> csv-file |
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- provide generic synchronization mechanisms across arbitrary/multiple storages based on ident/checksum |
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maybe it's possible to have schema-, structural- and semantical modifications synchronized??? |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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... the basic way: |
=head2 BASIC ACCESS |
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=head2 ADVANCED ACCESS |
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... via inheritance: |
... via inheritance: |
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$self->{storage}->insert($proxyObj); |
$self->{storage}->insert($proxyObj); |
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=head2 SYNCHRONIZATION |
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my $nodemapping = { |
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'LangText' => 'langtexts.csv', |
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'Currency' => 'currencies.csv', |
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'Country' => 'countries.csv', |
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}; |
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my $propmapping = { |
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'LangText' => [ |
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[ 'source:lcountrykey' => 'target:country' ], |
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[ 'source:lkey' => 'target:key' ], |
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[ 'source:lvalue' => 'target:text' ], |
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], |
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'Currency' => [ |
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[ 'source:ckey' => 'target:key' ], |
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[ 'source:cname' => 'target:text' ], |
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], |
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'Country' => [ |
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[ 'source:ckey' => 'target:key' ], |
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[ 'source:cname' => 'target:text' ], |
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], |
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}; |
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sub syncResource { |
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my $self = shift; |
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my $node_source = shift; |
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my $mode = shift; |
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my $opts = shift; |
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$mode ||= ''; |
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$opts->{erase} ||= 0; |
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$logger->info( __PACKAGE__ . "->syncResource( node_source $node_source mode $mode erase $opts->{erase} )"); |
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# resolve metadata for syncing requested resource |
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my $node_target = $nodemapping->{$node_source}; |
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my $mapping = $propmapping->{$node_source}; |
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if (!$node_target || !$mapping) { |
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# loggger.... "no target, sorry!" |
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print "error while resolving resource metadata", "\n"; |
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return; |
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} |
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if ($opts->{erase}) { |
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$self->_erase_all($node_source); |
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} |
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# create new sync object |
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my $sync = Data::Transfer::Sync->new( |
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storages => { |
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L => $self->{bizWorks}->{backend}, |
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R => $self->{bizWorks}->{resources}, |
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}, |
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id_authorities => [qw( L ) ], |
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checksum_authorities => [qw( L ) ], |
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write_protected => [qw( R ) ], |
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verbose => 1, |
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); |
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# sync |
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# todo: filter!? |
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$sync->syncNodes( { |
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direction => $mode, # | +PUSH | +PULL | -FULL | +IMPORT | -EXPORT |
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method => 'checksum', # | -timestamp | -manual |
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source => "L:$node_source", |
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source_ident => 'storage_method:id', |
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source_exclude => [qw( id cs )], |
160 |
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target => "R:$node_target", |
161 |
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target_ident => 'property:oid', |
162 |
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mapping => $mapping, |
163 |
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} ); |
164 |
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} |
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=head2 NOTE |
=head2 NOTE |
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This module heavily relies on DBI and Tangram, but adds a lot of additional bugs and quirks. |
This module heavily relies on DBI and Tangram, but adds a lot of additional bugs and quirks. |
171 |
Please look at their documentation and this code for additional information. |
Please look at their documentation and/or this code for additional information. |
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=head1 REQUIREMENTS |
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For full functionality: |
177 |
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DBI from CPAN |
178 |
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DBD::mysql from CPAN |
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Tangram 2.04 from CPAN (hmmm, 2.04 won't do in some cases) |
180 |
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Tangram 2.05 from http://... (2.05 seems okay but there are also additional patches from our side) |
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Class::Tangram from CPAN |
182 |
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DBD::CSV from CPAN |
183 |
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MySQL::Diff from http://adamspiers.org/computing/mysqldiff/ |
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... and all their dependencies |
185 |
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186 |
=cut |
=cut |
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194 |
use warnings; |
use warnings; |
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196 |
use Data::Storage::Locator; |
use Data::Storage::Locator; |
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use Data::Dumper; |
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# TODO: actually implement level (integrate with Log::Dispatch) |
200 |
my $TRACELEVEL = 0; |
my $TRACELEVEL = 0; |
201 |
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|
202 |
# get logger instance |
# get logger instance |
206 |
my $invocant = shift; |
my $invocant = shift; |
207 |
my $class = ref($invocant) || $invocant; |
my $class = ref($invocant) || $invocant; |
208 |
#my @args = normalizeArgs(@_); |
#my @args = normalizeArgs(@_); |
209 |
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|
210 |
my $arg_locator = shift; |
my $arg_locator = shift; |
211 |
my $arg_options = shift; |
my $arg_options = shift; |
212 |
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213 |
#my $self = { STORAGEHANDLE => undef, @_ }; |
#my $self = { STORAGEHANDLE => undef, @_ }; |
214 |
my $self = { STORAGEHANDLE => undef, locator => $arg_locator, options => $arg_options }; |
my $self = { STORAGEHANDLE => undef, locator => $arg_locator, options => $arg_options }; |
215 |
$logger->debug( __PACKAGE__ . "[$self->{locator}->{type}]" . "->new(@_)" ); |
#$logger->debug( __PACKAGE__ . "[$self->{locator}->{type}]" . "->new(@_)" ); |
216 |
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$logger->debug( __PACKAGE__ . "[$arg_locator->{type}]" . "->new(@_)" ); |
217 |
return bless $self, $class; |
return bless $self, $class; |
218 |
} |
} |
219 |
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|
224 |
# - Deep recursion on subroutine "Data::Storage::AUTOLOAD" |
# - Deep recursion on subroutine "Data::Storage::AUTOLOAD" |
225 |
# - Deep recursion on subroutine "Data::Storage::Handler::Abstract::AUTOLOAD" |
# - Deep recursion on subroutine "Data::Storage::Handler::Abstract::AUTOLOAD" |
226 |
# - Deep recursion on anonymous subroutine at [...] |
# - Deep recursion on anonymous subroutine at [...] |
227 |
# we also might filter log messages caused by logging itself in "advanced logging of AUTOLOAD calls" |
# we also might filter log messages caused by logging to itself in "advanced logging of AUTOLOAD calls" |
228 |
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|
229 |
my $self = shift; |
my $self = shift; |
230 |
our $AUTOLOAD; |
our $AUTOLOAD; |
246 |
$logstring .= "\t" x $tabcount . "(AUTOLOAD)"; |
$logstring .= "\t" x $tabcount . "(AUTOLOAD)"; |
247 |
# TODO: only ok if logstring doesn't contain |
# TODO: only ok if logstring doesn't contain |
248 |
# e.g. "Data::Storage[Tangram]->insert(SystemEvent=HASH(0x5c0034c)) (AUTOLOAD)" |
# e.g. "Data::Storage[Tangram]->insert(SystemEvent=HASH(0x5c0034c)) (AUTOLOAD)" |
249 |
# 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 ;) |
250 |
$logger->debug( $logstring ); |
$logger->debug( $logstring ); |
251 |
|
#print join('; ', @_); |
252 |
} |
} |
253 |
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|
254 |
# filtering AUTOLOAD calls |
# filtering AUTOLOAD calls and first-time-touch of the actual storage impl |
255 |
if ($self->_filter_AUTOLOAD($method)) { |
if ($self->_filter_AUTOLOAD($method)) { |
256 |
|
#print "_accessStorage\n"; |
257 |
$self->_accessStorage(); |
$self->_accessStorage(); |
258 |
$self->{STORAGEHANDLE}->$method(@_); |
$self->{STORAGEHANDLE}->$method(@_); |
259 |
} |
} |
294 |
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|
295 |
sub _createStorageHandle { |
sub _createStorageHandle { |
296 |
my $self = shift; |
my $self = shift; |
|
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|
297 |
my $type = $self->{locator}->{type}; |
my $type = $self->{locator}->{type}; |
298 |
$logger->debug( __PACKAGE__ . "[$type]" . "->_createStorageHandle()" ); |
$logger->debug( __PACKAGE__ . "[$type]" . "->_createStorageHandle()" ); |
299 |
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300 |
my $pkg = "Data::Storage::Handler::" . $type . ""; |
my $pkg = "Data::Storage::Handler::" . $type . ""; |
301 |
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302 |
# propagate args to handler |
# try to load perl module at runtime |
303 |
# needs some more thoughts! (not only "dbi" to Tangram, when (in future) db is not more the common case) |
my $evalstr = "use $pkg;"; |
304 |
if ($type eq 'DBI') { |
eval($evalstr); |
305 |
use Data::Storage::Handler::DBI; |
if ($@) { |
306 |
#my @args = %{$self->{locator}->{dbi}}; |
$logger->error( __PACKAGE__ . "[$type]" . "->_createStorageHandle(): $@" ); |
307 |
my @args = %{$self->{locator}}; |
return; |
|
# create new storage handle |
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$self->{STORAGEHANDLE} = $pkg->new( @args ); |
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} |
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if ($type eq 'Tangram') { |
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use Data::Storage::Handler::Tangram; |
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#$self->{STORAGEHANDLE} = $pkg->new( dsn => $self->{locator}->{dbi}->{dsn} ); |
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#my @args = %{$self->{locator}->{dbi}}; |
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my @args = %{$self->{locator}}; |
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# create new storage handle |
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$self->{STORAGEHANDLE} = $pkg->new( @args ); |
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#$self->{STORAGEHANDLE_UNDERLYING} = $self->{STORAGEHANDLE}->getUnderlyingStorage(); |
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#$self->{STORAGEHANDLE_UNDERLYING}->_configureCOREHANDLE(); |
|
308 |
} |
} |
309 |
|
|
310 |
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# build up some additional arguments to pass on |
311 |
|
#my @args = %{$self->{locator}}; |
312 |
|
my @args = (); |
313 |
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|
314 |
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# - create new storage handle object |
315 |
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# - propagate arguments to handler |
316 |
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# - pass locator by reference to be able to store status- or meta-information in it |
317 |
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$self->{STORAGEHANDLE} = $pkg->new( locator => $self->{locator}, @args ); |
318 |
|
|
319 |
} |
} |
320 |
|
|
321 |
sub addLogDispatchHandler { |
sub addLogDispatchHandler { |
347 |
} |
} |
348 |
|
|
349 |
sub removeLogDispatchHandler { |
sub removeLogDispatchHandler { |
350 |
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my $self = shift; |
351 |
my $self = shift; |
my $name = shift; |
352 |
my $name = shift; |
#my $logger = shift; |
353 |
#my $logger = shift; |
$logger->remove($name); |
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$logger->remove($name); |
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354 |
} |
} |
355 |
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356 |
sub getDbName { |
sub getDbName { |
368 |
if ( my $dbh = DBI->connect($dsn, '', '', { |
if ( my $dbh = DBI->connect($dsn, '', '', { |
369 |
PrintError => 0, |
PrintError => 0, |
370 |
} ) ) { |
} ) ) { |
371 |
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|
372 |
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# TODO: REVIEW |
373 |
$dbh->disconnect(); |
$dbh->disconnect(); |
374 |
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|
375 |
return 1; |
return 1; |
376 |
} else { |
} else { |
377 |
$logger->error( __PACKAGE__ . "[$self->{locator}->{type}]" . "->testDsn(): " . "DBI-error: " . $DBI::errstr ); |
$logger->warning( __PACKAGE__ . "[$self->{locator}->{type}]" . "->testDsn(): " . "DBI-error: " . $DBI::errstr ); |
378 |
} |
} |
379 |
} |
} |
380 |
|
|
381 |
sub createDb { |
sub testAvailability { |
382 |
my $self = shift; |
my $self = shift; |
383 |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
my $status = $self->testDsn(); |
384 |
|
$self->{locator}->{status}->{available} = $status; |
385 |
$logger->debug( __PACKAGE__ . "->createDb( dsn $dsn )" ); |
return $status; |
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$dsn =~ s/database=(.+?);//; |
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my $database_name = $1; |
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my $ok; |
|
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|
|
|
if ( my $dbh = DBI->connect($dsn, '', '', { |
|
|
PrintError => 0, |
|
|
} ) ) { |
|
|
if ($database_name) { |
|
|
if ($dbh->do("CREATE DATABASE $database_name;")) { |
|
|
$ok = 1; |
|
|
} |
|
|
} |
|
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$dbh->disconnect(); |
|
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} |
|
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|
|
return $ok; |
|
|
|
|
386 |
} |
} |
387 |
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388 |
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389 |
sub dropDb { |
sub dropDb { |
390 |
my $self = shift; |
my $self = shift; |
391 |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
my $dsn = $self->{locator}->{dbi}->{dsn}; |
405 |
$ok = 1; |
$ok = 1; |
406 |
} |
} |
407 |
} |
} |
408 |
|
|
409 |
$dbh->disconnect(); |
$dbh->disconnect(); |
410 |
|
|
411 |
} |
} |
412 |
|
|
413 |
return $ok; |
return $ok; |
424 |
|
|
425 |
=head1 DESCRIPTION |
=head1 DESCRIPTION |
426 |
|
|
427 |
Data::Storage is module for a accessing various "data structures" stored inside |
Data::Storage is a module for accessing various "data structures" stored inside |
428 |
various "data containers". It sits on top of DBI and/or Tangram. |
various "data containers". It sits on top of DBI and/or Tangram. |
429 |
|
|
430 |
|
|
439 |
|
|
440 |
=head1 ACKNOWLEDGEMENTS |
=head1 ACKNOWLEDGEMENTS |
441 |
|
|
442 |
Larry Wall and the C<perl5-porters> for Perl, |
Larry Wall for Perl, Tim Bunce for DBI, Jean-Louis Leroy for Tangram and Set::Object, |
443 |
Tim Bunce for DBI, Jean-Louis Leroy for Tangram and Set::Object, |
Sam Vilain for Class::Tangram, Jochen Wiedmann and Jeff Zucker for DBD::CSV and related, |
444 |
Sam Vilain for Class::Tangram. |
Adam Spiers for MySQL::Diff and all contributors. |
445 |
|
|
446 |
|
|
447 |
=head1 SUPPORT / WARRANTY |
=head1 SUPPORT / WARRANTY |
452 |
=head1 TODO |
=head1 TODO |
453 |
|
|
454 |
|
|
455 |
=head2 Handle the following errors/cases: |
=head2 BUGS |
456 |
|
|
457 |
=head3 "DBI-Error [Tangram]: DBD::mysql::st execute failed: Unknown column 't1.requestdump' in 'field list'" |
"DBI-Error [Tangram]: DBD::mysql::st execute failed: Unknown column 't1.requestdump' in 'field list'" |
458 |
|
|
459 |
... occours when operating on object-attributes not introduced yet: |
... occours when operating on object-attributes not introduced yet: |
460 |
this should be detected and appended/replaced through: |
this should be detected and appended/replaced through: |
461 |
"Schema-Error detected, maybe (just) an inconsistency. |
"Schema-Error detected, maybe (just) an inconsistency. |
462 |
Please check if your declaration in schema-module "a" matches structure in database "b" or try to run" |
Please check if your declaration in schema-module "a" matches structure in database "b" or try to run" |
463 |
db_setup.pl --dbkey=import --action=deploy |
db_setup.pl --dbkey=import --action=deploy |
464 |
|
|
465 |
=head3 Compare schema (structure diff) with database ... |
|
466 |
|
Compare schema (structure diff) with database ... |
467 |
|
|
468 |
... when issuing "db_setup.pl --dbkey=import --action=deploy" |
... when issuing "db_setup.pl --dbkey=import --action=deploy" |
469 |
on a database with an already deployed schema, use an additional "--update" then |
on a database with an already deployed schema, use an additional "--update" then |
492 |
automatically and this is believed to be the most common case under normal circumstances. |
automatically and this is believed to be the most common case under normal circumstances. |
493 |
|
|
494 |
|
|
495 |
=head2 Introduce some features: |
=head2 FEATURES |
496 |
|
|
497 |
- Get this stuff together with UML (Unified Modeling Language) and/or standards from ODMG. |
- Get this stuff together with UML (Unified Modeling Language) and/or standards from ODMG. |
498 |
- Make it possible to load/save schemas in XMI (XML Metadata Interchange), |
- Make it possible to load/save schemas in XMI (XML Metadata Interchange), |
500 |
Integrate/bundle this with a web-/html-based UML modeling tool or |
Integrate/bundle this with a web-/html-based UML modeling tool or |
501 |
some other interesting stuff like the "Co-operative UML Editor" from Uni Darmstadt. (web-/java-based) |
some other interesting stuff like the "Co-operative UML Editor" from Uni Darmstadt. (web-/java-based) |
502 |
- Enable Round Trip Engineering. Keep code and diagrams in sync. Don't annoy/bother the programmers. |
- Enable Round Trip Engineering. Keep code and diagrams in sync. Don't annoy/bother the programmers. |
503 |
- Add some more handlers: |
- Add support for some more handlers/locators to be able to |
504 |
- look at DBD::CSV, Text::CSV, XML::CSV, XML::Excel |
access the following standards/protocols/interfaces/programs/apis transparently: |
505 |
- Add some more locations/locators: |
+ DBD::CSV (via Data::Storage::Handler::DBI) |
506 |
- PerlDAV: http://www.webdav.org/perldav/ |
(-) Text::CSV, XML::CSV, XML::Excel |
507 |
- Move to t3, use InCASE |
- MAPI |
508 |
|
- LDAP |
509 |
|
- DAV (look at PerlDAV: http://www.webdav.org/perldav/) |
510 |
|
- Mbox (use formail for seperating/splitting entries/nodes) |
511 |
|
- Cyrus (cyrdeliver - what about cyrretrieve (export)???) |
512 |
|
- use File::DiffTree, use File::Compare |
513 |
|
- Hibernate |
514 |
|
- "Win32::UserAccountDb" |
515 |
|
- "*nix::UserAccountDb" |
516 |
|
- .wab - files (Windows Address Book) |
517 |
|
- .pst - files (Outlook Post Storage?) |
518 |
|
- XML (e.g. via XML::Simple?) |
519 |
|
- Move to t3, look at InCASE |
520 |
|
- some kind of security layer for methods/objects |
521 |
|
- acls (stored via tangram/ldap?) for functions, methods and objects (entity- & data!?) |
522 |
|
- where are the hooks needed then? |
523 |
|
- is Data::Storage & Co. okay, or do we have to touch the innards of DBI and/or Tangram? |
524 |
|
- an attempt to start could be: |
525 |
|
- 'sub getACLByObjectId($id, $context)' |
526 |
|
- 'sub getACLByMethodname($id, $context)' |
527 |
|
- 'sub getACLByName($id, $context)' |
528 |
|
( would require a kinda registry to look up these very names pointing to arbitrary locations (code, data, ...) ) |
529 |
|
|
530 |
|
|
531 |
|
|
532 |
=head3 Links: |
=head3 LINKS / REFERENCES |
533 |
|
|
534 |
Specs: |
Specs: |
535 |
UML 1.3 Spec: http://cgi.omg.org/cgi-bin/doc?ad/99-06-08.pdf |
UML 1.3 Spec: http://cgi.omg.org/cgi-bin/doc?ad/99-06-08.pdf |
555 |
(Dia (free): http://www.lysator.liu.se/~alla/dia/) |
(Dia (free): http://www.lysator.liu.se/~alla/dia/) |
556 |
UMLet (free, university): http://www.swt.tuwien.ac.at/umlet/index.html |
UMLet (free, university): http://www.swt.tuwien.ac.at/umlet/index.html |
557 |
Voodoo (free): http://voodoo.sourceforge.net/ |
Voodoo (free): http://voodoo.sourceforge.net/ |
558 |
|
Umbrello UML Modeller: http://uml.sourceforge.net/ |
559 |
|
|
560 |
UML Tools: |
UML Tools: |
561 |
http://www.objectsbydesign.com/tools/umltools_byPrice.html |
http://www.objectsbydesign.com/tools/umltools_byPrice.html |