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## ------------------------------------------------------------------------- |
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## |
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## $Id: Metadata.pm,v 1.6 2003/03/28 03:08:17 joko Exp $ |
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## |
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## Copyright (c) 2002 Andreas Motl <andreas.motl@ilo.de> |
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## |
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## 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: Metadata.pm,v $ |
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## Revision 1.6 2003/03/28 03:08:17 joko |
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## fix regarding namespace update |
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## |
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## Revision 1.5 2003/02/21 08:34:58 joko |
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## modified object hierarchy |
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## renamed method |
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## |
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## Revision 1.4 2003/02/14 14:06:20 joko |
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## + minor fix to old metadata structure |
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## |
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## Revision 1.3 2003/02/11 06:28:24 joko |
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## + changes to metadata structure |
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## |
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## Revision 1.2 2003/02/09 05:02:05 joko |
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## + major structure changes |
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## - refactored code to sister modules |
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## |
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## Revision 1.1 2003/01/20 16:58:46 joko |
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## + initial check-in: here they are.... |
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## |
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## Revision 1.1 2003/01/19 01:23:04 joko |
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## + new from Data/Transfer/Sync.pm |
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## |
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## ---------------------------------------------------------------------------------------- |
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|
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|
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package Data::Transfer::Sync::Metadata; |
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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 mixin::with qw( Data::Transfer::Sync ); |
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|
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|
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use Data::Dumper; |
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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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# TODO: refactor (still)!!! take this list from already established/given metadata .... |
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# .... also internally: passing around and mungling these metadata doesn't make sense anymore. |
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sub options2metadata { |
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my $self = shift; |
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|
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$logger->debug( __PACKAGE__ . "->transformMetadata" ); |
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|
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# trace |
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#print Dumper($self->{options}); |
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#print Dumper($self->{args_raw}); |
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#exit; |
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|
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# decompose identifiers and write to metadata (for each descent) |
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foreach ('source', 'target') { |
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|
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# get/set metadata for further processing |
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|
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$self->{options}->{$_}->{dbKey} ||= ''; |
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$self->{options}->{$_}->{nodeType} ||= ''; |
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$self->{options}->{$_}->{nodeName} ||= ''; |
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|
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# Partner and Node (compare the V1-notations: "L:Country" or "R:countries.csv") |
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$self->{meta}->{$_}->{dbKey} = $self->{options}->{$_}->{dbKey}; |
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$self->{meta}->{$_}->{nodeType} = $self->{options}->{$_}->{nodeType}; |
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$self->{meta}->{$_}->{nodeName} = $self->{options}->{$_}->{nodeName}; |
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|
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# Filter |
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if (my $item_filter = $self->{options}->{$_}->{filter}) { |
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$self->{meta}->{$_}->{filter} = $item_filter; |
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} |
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|
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# IdentProvider |
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if (my $item_ident = $self->{options}->{$_}->{ident}) { |
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my @item_ident = split(':', $item_ident); |
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$self->{meta}->{$_}->{IdentProvider} = { method => $item_ident[0], arg => $item_ident[1] }; |
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} |
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|
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# TODO: ChecksumProvider |
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# already inside {options} - get it out from there and put into {meta} here! |
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|
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# exclude properties/subnodes |
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if (my $item_exclude = $self->{options}->{$_}->{exclude}) { |
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$self->{meta}->{$_}->{subnodes_exclude} = $item_exclude; |
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} |
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|
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# TypeProvider |
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# FIXME! this is still Vdeprecated!!! |
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if (my $item_type = $self->{options}->{$_ . '_type'}) { |
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my @item_type = split(':', $item_type); |
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$self->{meta}->{$_}->{TypeProvider} = { method => $item_type[0], arg => $item_type[1] }; |
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} |
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|
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# trace |
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#print Dumper($self); |
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#exit; |
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|
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# Callbacks - writers (will be triggered _before_ writing to target) |
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if (my $item_writers = $self->{options}->{$_}->{callbacks}->{write}) { |
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my $descent = $_; # this is important since the following code inside the map wants to use its own context variables |
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map { $self->{meta}->{$descent}->{Callback}->{write}->{$_}++; } @$item_writers; |
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} |
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|
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# Callbacks - readers (will be triggered _after_ reading from source) |
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if (my $item_readers = $self->{options}->{$_}->{callbacks}->{read}) { |
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my $descent = $_; |
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map { $self->{meta}->{$descent}->{Callback}->{read}->{$_}++; } @$item_readers; |
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} |
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|
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# resolve storage handles |
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$self->{meta}->{$_}->{storage} = $self->{options}->{$_}->{storage}->{handle}; |
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|
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# transfer storage handle options to metadata |
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#map { $self->{meta}->{$_}->{isIdentAuthority} = 1 } @{$self->{id_authorities}}; |
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#map { $self->{meta}->{$_}->{isChecksumAuthority} = 1; } @{$self->{checksum_authorities}}; |
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#map { $self->{meta}->{$_}->{isWriteProtected} = 1; } @{$self->{write_protected}}; |
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#print Dumper($self->{options}->{$_}); |
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#exit; |
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$self->{meta}->{$_}->{isIdentAuthority} = $self->{options}->{$_}->{storage}->{handle}->{locator}->{sync}->{isIdentAuthority}; |
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$self->{meta}->{$_}->{isWriteProtected} = $self->{options}->{$_}->{storage}->{handle}->{locator}->{sync}->{isWriteProtected}; |
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$self->{meta}->{$_}->{isChecksumAuthority} = $self->{options}->{$_}->{storage}->{handle}->{locator}->{sync}->{isChecksumAuthority}; |
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|
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} |
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|
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#print Dumper($self->{meta}); |
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return 1; |
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|
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} |
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|
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|
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sub options2metadata_accessor { |
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my $self = shift; |
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|
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$logger->debug( __PACKAGE__ . "->_transformMetadata_accessor" ); |
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|
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# build accessor metadata (for each descent) |
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foreach my $descent ('source', 'target') { |
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|
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# the database type plays a role here to handle special nodesets: |
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# there may be a) childless/non-strict nodesets (e.g. a CSV-file) |
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# or b) normal ones - here the node-name corresponds more or less directly to |
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# the physical location in the storage hierarchy below us (e.g. MAPI or LDAP) |
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# or c) sets of nodes which are physically mapped by node-type (e.g. a RDBMS or a ODBMS) |
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my $dbType = $self->{meta}->{$descent}->{storage}->{locator}->{type}; |
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|
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# a, b and c are "accessor-type"s (of 'none', 'node-name', 'node-type') |
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# the following code resolves these types to '$accessorType' |
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# and properly sets '$accessorName' |
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|
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# don't continue for certain storage handlers |
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# HACK for DBD::CSV - re-enable for other DBDs |
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#next if $dbType eq 'DBI'; |
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|
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# get nodename |
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# get node-name |
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my $nodename = $self->{meta}->{$descent}->{node}; # V1 |
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$nodename ||= $self->{meta}->{$descent}->{nodeName}; # V2 |
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|
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# check if nodename is actually a CODEref, execute it to get a mapped/filtered target-nodename |
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#print "----", ref $nodename, "\n"; |
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#if ($nodename =~ m/CODE/) { |
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# print Dumper($self); |
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# #exit; |
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# $nodename = $nodename->($nodename); |
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#} |
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|
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# determine nodeset accessor -type and -name |
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# defaults |
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my $accessorType = 'none'; |
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my $accessorName = ''; |
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|
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# if explicit address was given in options, just use it! |
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if (my $address = $self->{options}->{$descent}->{address}) { |
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$accessorType = 'direct-address'; |
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$accessorName = $address; |
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} |
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|
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# c) |
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elsif (($dbType eq 'DBI' || $dbType eq 'Tangram') && $self->{meta}->{$descent}->{nodeType}) { |
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$accessorType = 'node-type'; |
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$accessorName = $self->{meta}->{$descent}->{nodeType}; |
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} |
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# b) |
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elsif ($nodename) { |
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$accessorType = 'node-name'; |
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$accessorName = $nodename; |
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} |
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# write accessor information to metadata |
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$self->{meta}->{$descent}->{accessorType} = $accessorType; |
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$self->{meta}->{$descent}->{accessorName} = $accessorName; |
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} |
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# trace |
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#print Dumper($self->{meta}); |
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#print Dumper($self->{options}); |
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#exit; |
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|
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} |
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|
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|
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1; |
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__END__ |
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