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## ------------------------------------------------------------------------- |
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## |
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## $Id$ |
## $Id$ |
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## |
## |
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## Copyright (c) 2002 Andreas Motl <andreas.motl@ilo.de> |
## Copyright (c) 2002 Andreas Motl <andreas.motl@ilo.de> |
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## |
## |
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## See COPYRIGHT section in pod text below for usage and distribution rights. |
## See COPYRIGHT section in associated pod text |
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## or below for usage and distribution rights. |
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## |
## |
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## ---------------------------------------------------------------------------------------- |
## ------------------------------------------------------------------------- |
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## $Log$ |
## $Log$ |
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## Revision 1.10 2004/06/19 01:43:03 joko |
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## code from _prepareOptions now split into _prepareMap and _mergeOptions |
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## |
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## Revision 1.9 2003/05/13 08:16:44 joko |
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## minor update: modified header |
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## |
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## Revision 1.8 2003/03/27 15:31:15 joko |
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## fixes to modules regarding new namespace(s) below Data::Mungle::* |
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## |
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## Revision 1.7 2003/02/21 08:00:24 joko |
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## debugging |
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## |
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## Revision 1.6 2003/02/14 12:58:47 joko |
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## + re-enabled the erase-mechanism |
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## |
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## Revision 1.5 2003/02/11 05:26:04 joko |
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## + sub _tellWhatIWillDo |
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## + re-enabled "branch to execution path for special targets" mechanism |
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## |
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## Revision 1.4 2003/02/09 05:03:02 joko |
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## + minor fix regarding namespace of api versioning extension module |
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## |
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## Revision 1.3 2003/02/09 04:59:27 joko |
## Revision 1.3 2003/02/09 04:59:27 joko |
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## + api versioning mechanism |
## + api versioning mechanism |
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## + major structure changes |
## + major structure changes |
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use Data::Dumper; |
use Data::Dumper; |
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use Hash::Merge qw( merge ); |
use Hash::Merge qw( merge ); |
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use Data::Compare::Struct qw( isEmpty ); |
use Data::Mungle::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 $logger = Log::Dispatch::Config->instance; |
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$logger->debug( __PACKAGE__ . "->loadVersionExtensions( version='$syncVersion' )"); |
$logger->debug( __PACKAGE__ . "->loadVersionExtensions( version='$syncVersion' )"); |
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#print Dumper($self); |
#print Dumper($self); |
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#exit; |
#exit; |
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my $module = "Version::$syncVersion"; |
my $module = "API::$syncVersion"; |
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$self->load($module); |
$self->load($module); |
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} |
} |
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sub configure { |
sub configure { |
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my $self = shift; |
my $self = shift; |
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#print "YAI\n"; |
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#print Dumper(@_); |
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#exit; |
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$logger->debug( __PACKAGE__ . "->configure"); |
$logger->debug( __PACKAGE__ . "->configure"); |
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my @args = @_; |
my @args = @_; |
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#print Dumper(@args); |
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if (!isEmpty(\@args)) { |
if (!isEmpty(\@args)) { |
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my %properties = @_; |
my %properties = @_; |
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# merge args to properties |
# merge args to properties |
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dbKey => $self->{args_raw}->{source}, |
dbKey => $self->{args_raw}->{source}, |
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nodeType => $self->{args_raw}->{'source-type'}, |
nodeType => $self->{args_raw}->{'source-type'}, |
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nodeName => $self->{args_raw}->{'source-node'}, |
nodeName => $self->{args_raw}->{'source-node'}, |
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ident => $self->{args_raw}->{'source-ident'}, |
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}, |
}, |
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target => { |
target => { |
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dbKey => $self->{args_raw}->{target}, |
dbKey => $self->{args_raw}->{target}, |
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my $self = shift; |
my $self = shift; |
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my $args = shift; |
my $args = shift; |
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#$logger->notice( "========================== " . __PACKAGE__ . "->syncNodes =============="); |
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$logger->debug( __PACKAGE__ . "->syncNodes: starting" ); |
$logger->debug( __PACKAGE__ . "->syncNodes: starting" ); |
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#print Dumper($self); |
#print Dumper($self); |
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#print Dumper($self->{options}); |
#print Dumper($self->{options}); |
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$self->_prepareOptions(); |
$self->_prepareOptions(); |
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#print Dumper($self->{options}); |
# trace |
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#print Dumper($self->{options}); |
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#exit; |
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if (!$self->checkOptions()) { |
if (!$self->checkOptions()) { |
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$logger->critical( __PACKAGE__ . "->syncNodes: 'Data::Transfer::Sync::checkOptions' failed."); |
$logger->critical( __PACKAGE__ . "->syncNodes: 'Data::Transfer::Sync::checkOptions' failed."); |
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return; |
return; |
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} |
} |
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#print Dumper($args); |
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# remember arguments through the whole processing |
# remember arguments through the whole processing |
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$self->{args} = $args; |
$self->{args} = $args; |
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# hash to sum up results |
# hash to sum up results |
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# TODO: re-implement! (sync-statistics???) |
# TODO: re-implement! (sync-statistics???) |
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#print Dumper($self->{options}->{process}); |
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# detect synchronization method to determine which optical symbol (directed arrow) to use |
# detect synchronization method to determine which optical symbol (directed arrow) to use |
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my $mode = $self->{args}->{mode}; # V1 |
my $mode = $self->{args}->{mode}; # V1 |
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$mode ||= $self->{options}->{process}->{mode}; # V2 |
$mode ||= $self->{options}->{process}->{mode}; # V2 |
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$self->options2metadata(); |
$self->options2metadata(); |
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$self->options2metadata_accessor(); |
$self->options2metadata_accessor(); |
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# branch to execution path for special targets |
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# detect for option 'handler' which could be a CODEref |
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if ($self->{options}->{handler} && ref $self->{options}->{handler} eq 'CODE') { |
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$logger->info( __PACKAGE__ . "->syncNodes: Running (special handler code - no generic sync!) on '$self->{options}->{target}->{dbKey}' with MODE $self->{options}->{process}->{mode}, NODE $self->{options}->{target}->{address}"); |
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#print Dumper($self); |
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#exit; |
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# don't do this any more - it wasn't very nice somehow ... |
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#$self->{options}->{handler}->($self->{app}, $self->{options}); |
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# .... now: better let the parent application scope handle this via callback |
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# not any more required for this: $self->{app} inside here (which isn't the app we mean here) |
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# required for this: getting the options out of here: establish some getter method! ($self->getOptions(...)) |
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# so.... |
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#$self->{__bridge}->{parent_ref}-> |
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# ahh okay, DesignPattern::Bridge moves closer to some Class::Inner!??? |
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# so... |
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# similar like above - but it isn't very nice anyway ... (no privateness, but: who cares?) |
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#print Dumper($self->{__bridge}); |
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# just take the global application instance and |
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# throw it into the context of the mapping module - this is heavy! ;-) (but again, who cares...) |
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# TODO: handle this more abstract *sometime* |
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#$self->{options}->{handler}->($self->{__bridge}->{parent}->{app}, $self->{options}); |
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$self->{options}->{handler}->($self->{__bridge}->{parent}->{process}, $self->{options}); |
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return; |
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} |
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# TODO: execution path branch V2!!! |
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# option1: wrap this via callback to parent scope (like current impl. mechanism) |
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# option2: branch directly from here (this needs refactoring of the sub handler) |
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# tracing |
# tracing |
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#print Dumper($self); |
#print Dumper($self); |
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#exit; |
#exit; |
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$logger->info( __PACKAGE__ . "->syncNodes: source=$self->{meta}->{source}->{dbKey}/$self->{meta}->{source}->{nodeName} [$self->{meta}->{source}->{nodeType}] $direction_arrow target=$self->{meta}->{target}->{dbKey}/$self->{meta}->{target}->{nodeName} [$self->{meta}->{target}->{nodeType}]" ); |
# V1: |
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$logger->debug( __PACKAGE__ . "->syncNodes: source=$self->{meta}->{source}->{dbKey}/$self->{meta}->{source}->{nodeName} [$self->{meta}->{source}->{nodeType}] $direction_arrow target=$self->{meta}->{target}->{dbKey}/$self->{meta}->{target}->{nodeName} [$self->{meta}->{target}->{nodeType}]" ); |
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# V2: |
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my $what = "$self->{meta}->{source}->{dbKey}/$self->{meta}->{source}->{nodeName} [$self->{meta}->{source}->{nodeType}] $direction_arrow $self->{meta}->{target}->{dbKey}/$self->{meta}->{target}->{nodeName} [$self->{meta}->{target}->{nodeType}]"; |
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#my $header = ("~.." x 7) . " " . $what . " " . ("~.." x 4); |
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#my $header = ("= " x 7) . " " . $what . " " . ("= " x 4); |
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#my $header = ("~=-_-=" x 3) . " " . $what . " " . ("~=-_-=" x 4); |
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my $header = ("_-=~=-" x 4) . " " . $what . " " . ("_-=~=-" x 4); |
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$logger->notice($header); |
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return if !$self->buildFieldmapping(); |
return if !$self->buildFieldmapping(); |
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return if !$self->_touchNodeSet(); |
return if !$self->_touchNodeSet(); |
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return if !$self->_prepare_sync(); |
return if !$self->_prepare_sync(); |
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$self->_tellWhatIWillDo(); |
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# tracing |
# tracing |
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#print Dumper($self); |
#print Dumper($self); |
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} |
} |
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my $c_string_default = ''; |
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sub c_string { |
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my $value = shift; |
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$value ||= "[$c_string_default]"; |
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return $value; |
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} |
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sub _tellWhatIWillDo { |
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my $self = shift; |
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#return; |
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# trace |
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#print Dumper($self->{meta}); |
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#exit; |
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$c_string_default = 'n/a'; |
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my $source = c_string($self->{opt}->{'source'}); |
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my $source_node = c_string($self->{opt}->{'source-node'}); |
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my $source_type = c_string($self->{opt}->{'source-type'}); |
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my $target = c_string($self->{opt}->{'target'}); |
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my $target_node = c_string($self->{opt}->{'target-node'}); |
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my $target_type = c_string($self->{opt}->{'target-type'}); |
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my $mapping_module = c_string($self->{opt}->{'mapping-module'}); |
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my $mode = uc c_string($self->{opt}->{'mode'}); |
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#my $ql = "$mode INTO $source NODE $source_node TYPE $source_type SELECT NODE $target_node TYPE $target_type FROM $target USING MODULE $mapping_module;"; |
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#$logger->notice( __PACKAGE__ . ": $ql" ); |
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my $ql = <<EOT; |
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FETCH DATA |
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FROM STORAGE $self->{meta}->{source}->{dbKey} |
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AT NODE $self->{meta}->{source}->{accessorName}.$self->{meta}->{source}->{nodeName} |
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USING IDENTIFIER $self->{meta}->{source}->{IdentProvider}->{method}.$self->{meta}->{source}->{IdentProvider}->{arg} |
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CONVERT DATA |
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CAST FROM $self->{meta}->{source}->{nodeType} TO $self->{meta}->{target}->{nodeType} |
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MAP ATTRIBUTES FROM @{$self->{meta}->{source}->{childnodes}} TO @{$self->{meta}->{target}->{childnodes}} |
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STORE DATA |
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TO STORAGE $self->{meta}->{target}->{dbKey} |
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AT NODE $self->{meta}->{target}->{accessorName}.$self->{meta}->{target}->{nodeName} |
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USING IDENTIFIER $self->{meta}->{target}->{IdentProvider}->{method}.$self->{meta}->{target}->{IdentProvider}->{arg} |
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EOT |
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chomp($ql); |
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$logger->info($ql); |
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#exit; |
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return; |
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my $actioning = ucfirst $self->{opt}->{'action'} . 'ing'; |
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# FIXME: this is weird! |
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my $long = <<EOT; |
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- $actioning data of type $target_type and |
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filtered by $target_node from the storage named $target |
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to the storage named $source - filtered by $source_node. |
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- Will attempt to convert the data to $source_type. |
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EOT |
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chomp($long); |
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$logger->notice( __PACKAGE__ . ": $long" ); |
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} |
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sub _prepareOptions { |
sub _prepareOptions { |
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my $self = shift; |
my $self = shift; |
388 |
# inform user about option preparation |
# inform user about option preparation |
389 |
$logger->debug( __PACKAGE__ . "->_prepareOptions( source.node='$opts->{source}->{nodeName}', target.node='$opts->{target}->{nodeName}', mode='$opts->{process}->{mode}', e='$opts->{process}->{erase}', p='$opts->{process}->{prepare}' )"); |
$logger->debug( __PACKAGE__ . "->_prepareOptions( source.node='$opts->{source}->{nodeName}', target.node='$opts->{target}->{nodeName}', mode='$opts->{process}->{mode}', e='$opts->{process}->{erase}', p='$opts->{process}->{prepare}' )"); |
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# try to load mapping-metadata-container |
my $map = {}; |
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# How? Create a new instance of the given |
$map = $self->_prepareMap($opts) if not $opts->{process}->{prepare}; |
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# perl module/package name in ->{...}->{moduleName}. |
#$map = $self->_prepareMap($opts); |
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# This instance is used later in the innards of the sync, |
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# that's why the module (class) should have a certain layout |
# merge all together |
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# enabling the core to use it for gathering metadata while processing. |
$self->_mergeOptions($opts, $map); |
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my $mapObject = DesignPattern::Object->fromPackage($opts->{map}->{moduleName}); |
#print Dumper($self->{options}); |
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# try to resolve map from metadata-container |
$self->{state}->{options_ready} = 1; |
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# type of the item/node |
return 1; |
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my $source_nodeType = $opts->{source}->{nodeType}; |
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# check if mapping for certain node is contained in mapping object |
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if (!$mapObject || !$mapObject->can($source_nodeType)) { |
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$logger->warning( __PACKAGE__ . "->_prepareOptions: Can't access mapping for source-type=\"$source_nodeType\" - please check \"$opts->{map}->{moduleName}\"."); |
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return; |
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} |
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# get map |
} |
404 |
my $map = $mapObject->$source_nodeType; |
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#print Dumper($map); |
sub _prepareMap { |
406 |
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my $self = shift; |
407 |
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my $opts = shift; |
408 |
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409 |
my $map_version = $map->{metadata}->{version}; |
# 1. try to load mapping-metadata-container |
410 |
# FIXME: backward compatibility |
|
411 |
if (!$map_version) { |
# How? Create a new instance of the given |
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$self->options_to_V2($map); |
# perl module/package name in ->{...}->{moduleName}. |
413 |
} |
# This instance is used later in the innards of the sync, |
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# that's why the module (class) should have a certain layout |
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# enabling the core to use it for gathering metadata while processing. |
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my $mapObject = DesignPattern::Object->fromPackage($opts->{map}->{moduleName}); |
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# trace |
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#print Dumper($map); |
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#exit; |
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#print "ref: ", ref $map->{target}, "\n"; |
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#print "target: ", $map->{target}, "\n"; |
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# check here if "target" is actually a CODEref - in this case: resolve it - deprecated!!! ??? |
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if (ref $map->{target}->{address} eq 'CODE') { |
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$map->{target}->{address} = $map->{target}->{address}->($source_nodeType); |
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} |
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# resolve expressions (on nodename-level) here |
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elsif ($map->{target}->{address} =~ m/^(code|expr):(.+?)$/) { |
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my $target_dynamic_type = $1; |
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my $target_dynamic_expression = $2; |
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if (lc $target_dynamic_type eq 'code') { |
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$map->{target} = $mapObject->$target_dynamic_expression($map); |
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} |
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} |
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419 |
# merging - V1 |
# 2. try to resolve map from metadata-container |
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#map { $opts->{$_} = $map->{$_}; } keys %$map; |
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# trace |
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#print Dumper($self->{options}); |
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# merging - V2 |
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# merge local map with local opts |
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# enable cloning |
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# FIXME: do we really need cloning here? trade safety/encapsulation for speed? |
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Hash::Merge::set_clone_behavior(1); |
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Hash::Merge::set_behavior( 'RIGHT_PRECEDENT' ); |
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my $locals_merged = merge( $opts, $map ); |
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# trace |
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#print Dumper($opts); |
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#print Dumper($map); |
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#print Dumper($locals_merged); |
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#exit; |
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420 |
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|
421 |
# merge local-merged ones with instance-wide options |
# type of the item/node |
422 |
Hash::Merge::set_clone_behavior(0); |
my $source_nodeType = $opts->{source}->{nodeType}; |
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$self->{options} = merge( $self->{options}, $locals_merged ); |
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423 |
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424 |
# trace |
# check if mapping for certain node is contained in mapping object |
425 |
#print Dumper($self->{options}); |
if (!$mapObject || !$mapObject->can($source_nodeType)) { |
426 |
#exit; |
$logger->warning( __PACKAGE__ . "->_prepareOptions: Can't access mapping for source-type=\"$source_nodeType\" - please check \"$opts->{map}->{moduleName}\"."); |
427 |
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return; |
428 |
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} |
429 |
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430 |
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# get map |
431 |
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my $map = $mapObject->$source_nodeType; |
432 |
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#print Dumper($map); |
433 |
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434 |
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my $map_version = $map->{metadata}->{version}; |
435 |
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# FIXME: backward compatibility |
436 |
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if (!$map_version) { |
437 |
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$self->options_to_V2($map); |
438 |
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} |
439 |
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440 |
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# trace |
441 |
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#print Dumper($map); |
442 |
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#exit; |
443 |
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#print "ref: ", ref $map->{target}, "\n"; |
444 |
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#print "target: ", $map->{target}, "\n"; |
445 |
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446 |
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# check here if "target" is actually a CODEref - in this case: resolve it - deprecated!!! ??? |
447 |
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if (ref $map->{target}->{address} eq 'CODE') { |
448 |
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$map->{target}->{address} = $map->{target}->{address}->($source_nodeType); |
449 |
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} |
450 |
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451 |
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# resolve expressions (on nodename-level) here |
452 |
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elsif ($map->{target}->{address} =~ m/^(code|expr):(.+?)$/) { |
453 |
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my $target_dynamic_type = $1; |
454 |
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my $target_dynamic_expression = $2; |
455 |
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if (lc $target_dynamic_type eq 'code') { |
456 |
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$map->{target} = $mapObject->$target_dynamic_expression($map); |
457 |
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} |
458 |
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} |
459 |
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460 |
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return $map; |
461 |
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462 |
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} |
463 |
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464 |
$self->{state}->{options_ready} = 1; |
sub _mergeOptions { |
465 |
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my $self = shift; |
466 |
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my $opts = shift; |
467 |
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my $map = shift; |
468 |
|
|
469 |
return 1; |
# 1. merge local map with local opts |
470 |
|
|
471 |
|
# delete undef'd items in $map |
472 |
|
|
473 |
|
# enable cloning |
474 |
|
# FIXME: do we really need cloning here? trade safety/encapsulation for speed? |
475 |
|
Hash::Merge::set_clone_behavior(1); |
476 |
|
Hash::Merge::set_behavior( 'RIGHT_PRECEDENT' ); |
477 |
|
#Hash::Merge::set_behavior( 'STORAGE_PRECEDENT' ); |
478 |
|
#Hash::Merge::set_behavior( 'RETAINMENT_PRECEDENT' ); |
479 |
|
# TODO: add an option to Hash::Merge not to overwrite set items with undefined/empty/not assigned ones |
480 |
|
my $locals_merged = merge( $opts, $map ); |
481 |
|
|
482 |
|
# 2. merge local-merged ones with instance-wide options |
483 |
|
Hash::Merge::set_clone_behavior(0); |
484 |
|
$self->{options} = merge( $self->{options}, $locals_merged ); |
485 |
} |
} |
486 |
|
|
|
|
|
487 |
sub _preCheckOptions { |
sub _preCheckOptions { |
488 |
|
|
489 |
my $self = shift; |
my $self = shift; |
493 |
#print Dumper($opts); |
#print Dumper($opts); |
494 |
#exit; |
#exit; |
495 |
|
|
496 |
if (!$opts->{process}->{mode}) { |
if (!$opts->{process}->{mode} and !$opts->{process}->{prepare}) { |
497 |
$logger->error( __PACKAGE__ . "->_preCheckOptions failed: Please specify \"--action=(load|save)\"."); |
$logger->error( __PACKAGE__ . "->_preCheckOptions failed: Please specify \"--action=(load|save)\" or \"--prepare\"."); |
498 |
return; |
return; |
499 |
} |
} |
500 |
|
|
514 |
$logger->warning( __PACKAGE__ . "->_preCheckOptions: No mapping supplied - please check key 'map|mappings' in global configuration or specify additional argument '--mapping-module'."); |
$logger->warning( __PACKAGE__ . "->_preCheckOptions: No mapping supplied - please check key 'map|mappings' in global configuration or specify additional argument '--mapping-module'."); |
515 |
return; |
return; |
516 |
} |
} |
517 |
if (!$opts->{map}->{moduleName}) { |
if (!$opts->{map}->{moduleName} and !$opts->{process}->{prepare}) { |
518 |
$logger->warning( __PACKAGE__ . "->_preCheckOptions: Currently only perl-modules can provide mappings: Please specify one with '--mapping-module=My::Mapping::Module'."); |
$logger->warning( __PACKAGE__ . "->_preCheckOptions: Currently only perl-modules can provide mappings: Please specify one with '--mapping-module=My::Mapping::Module'."); |
519 |
return; |
return; |
520 |
} |
} |
545 |
# TODO: introduce different mechanism to make more then two partners (descents) possible |
# TODO: introduce different mechanism to make more then two partners (descents) possible |
546 |
($self->{meta}->{source}, $self->{meta}->{target}) = |
($self->{meta}->{source}, $self->{meta}->{target}) = |
547 |
($self->{meta}->{target}, $self->{meta}->{source}); |
($self->{meta}->{target}, $self->{meta}->{source}); |
548 |
|
#($self->{options}->{source}, $self->{options}->{target}) = |
549 |
|
# ($self->{options}->{target}, $self->{options}->{source}); |
550 |
|
|
551 |
} elsif (lc $self->{options}->{process}->{mode} eq 'full') { |
} elsif (lc $self->{options}->{process}->{mode} eq 'full') { |
552 |
# TODO: |
# TODO: |
560 |
|
|
561 |
# import flag means: prepare the source node to be syncable |
# import flag means: prepare the source node to be syncable |
562 |
# this is useful if there are e.g. no "ident" or "checksum" columns yet inside a DBI like (row-based) storage |
# this is useful if there are e.g. no "ident" or "checksum" columns yet inside a DBI like (row-based) storage |
563 |
if ($self->{args}->{prepare}) { |
if ($self->{options}->{process}->{prepare}) { |
564 |
$self->_prepareNode_MetaProperties('source'); |
$self->_prepareNode_MetaProperties('source'); |
565 |
$self->_prepareNode_DummyIdent('source'); |
$self->_prepareNode_DummyIdent('source'); |
566 |
#return; |
return; |
567 |
#$self->_erase_all($opts->{source_node}); |
#$self->_erase_all($opts->{source_node}); |
568 |
} |
} |
569 |
|
|
570 |
# erase flag means: erase the target |
# erase flag means: erase the target |
571 |
#if ($opts->{erase}) { |
#if ($opts->{erase}) { |
572 |
if ($self->{args}->{erase}) { |
if ($self->{options}->{process}->{erase}) { |
573 |
# TODO: move this method to the scope of the synchronization core and wrap it around different handlers |
# TODO: move this method to the scope of the synchronization core and wrap it around different handlers |
574 |
#print "ERASE", "\n"; |
#print "ERASE", "\n"; |
575 |
$self->_erase_all('target'); |
$self->_erase_all('target'); |