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## $Id$ |
## $Id$ |
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## ---------------------------------------------------------------------- |
## ---------------------------------------------------------------------- |
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## $Log$ |
## $Log$ |
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## Revision 1.5 2004/06/20 23:00:23 joko |
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## minor fix: now creates cache-file in same directory where rap.xml is |
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## |
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## Revision 1.4 2004/06/20 16:12:24 joko |
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## + sub indexTargets |
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## modified getTargetDetails to use cached target details |
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## |
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## Revision 1.3 2003/03/29 07:13:19 joko |
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## better exception handling if target was not found in xml |
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## |
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## Revision 1.2 2003/02/20 20:04:35 joko |
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## renamed methods |
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## - refactored xml-specific code to Data::Storage::Handler::XML |
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## |
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## Revision 1.1 2003/02/18 15:35:49 joko |
## Revision 1.1 2003/02/18 15:35:49 joko |
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## + initial commit |
## + initial commit |
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## |
## |
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use Data::Dumper; |
use Data::Dumper; |
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use XML::Parser; |
use DesignPattern::Object; |
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use XML::Parser::EasyTree; |
use Storable; |
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use XML::XPath; |
use File::Basename qw( dirname ); |
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#$XML::Parser::Easytree::Noempty=0; |
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#use XML::Simple; |
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sub getTargetMetadata { |
sub accessMetadata { |
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my $self = shift; |
my $self = shift; |
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my $target = shift; |
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#my $result = $self->queryXml("*/target[\@name=\"$target\"]", keyattr => [qw( name )], forcearray => 1); |
# create instance of storage object once |
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my $keyattr = { |
if (!$self->{__rap}->{metadbengine}) { |
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topic => 'name', |
$self->{__rap}->{metadbengine} = |
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taskdef => 'name', |
DesignPattern::Object->fromPackage('Data::Storage::Handler::XML', filename => $self->{__rap}->{filename} ); |
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target => 'name', |
} |
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}; |
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#my $result = $self->queryXml("*/target[\@name=\"$target\"]", keyattr => $keyattr, forcearray => 1); |
return $self->{__rap}->{metadbengine}; |
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$self->queryXml("*/target[\@name=\"$target\"]"); |
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#return $self->_queryXml($self->{filename}, "target"); |
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#print Dumper($result); |
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#return $result->{target}; |
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#return $result->{target}->{$target}; |
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#return $result; |
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$self->xml2easytree(); |
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return $self->{payload}; |
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} |
} |
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sub readXmlOverview { |
sub getTargetList { |
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my $self = shift; |
my $self = shift; |
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$self->log( "Reading Job Database from XML.", 'notice' ); |
$self->log( "Reading database of targets (dot) from XML.", 'notice' ); |
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#$self->{payload} = XMLin($self->{filename}); |
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#my $result = $self->queryXml("*/target", forcearray => 1); |
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#my $result = $self->queryXml("*/target", keyattr =>[]); |
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$self->queryXml("*/target", keyattr => [qw( name )] ); |
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$self->xml2simplehash(); |
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#return $result; |
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} |
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sub queryXml { |
# prepare access to metadata (assure instantiated storage handle) |
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my $self = shift; |
my $mdbe = $self->accessMetadata(); |
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my $xpq = shift; |
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my $options = shift; |
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$self->log( "_queryXml( xpq='$xpq' ) ", 'info' ); |
$mdbe->sendQuery("*/target"); |
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$mdbe->circumflex('result'); |
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my $file = $self->{filename}; |
# checks |
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if ($mdbe->isEmpty) { |
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if (! -e $file) { |
$self->log("XML metadata was empty.", 'critical'); |
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$self->log("file not found: '$file'", 'error'); |
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return; |
return; |
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} |
} |
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# trace |
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#print Dumper($self->{buffer}); |
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#exit; |
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# behaviour |
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#$self->xml2simplehash(); |
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my $tree = $mdbe->toEasyTree(); |
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#return $result; |
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# trace |
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#print Dumper($tree); |
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#exit; |
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# build result |
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my @targets; |
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foreach my $entry (@{$tree->{content}}) { |
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my $description = $entry->{content}->[0]->{content}->[0]->{content}; |
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push @targets, { name => $entry->{attrib}->{name}, description => $description }; |
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} |
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#print "file: $file", "\n"; |
return \@targets; |
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#print "xpq: $xpq", "\n"; |
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} |
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# filter nodes by xpath-query |
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my $xp = XML::XPath->new( filename => $file ); |
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my $nodeset = $xp->find($xpq); |
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# build result xml |
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my $buffer; |
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foreach my $node ($nodeset->get_nodelist) { |
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$buffer .= XML::XPath::XMLParser::as_string($node) . "\n\n"; |
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} |
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#$buffer .= ''; |
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#$buffer = "<result>$buffer</result>"; |
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# trace |
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#print $buffer, "\n"; |
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$self->{buffer} = $buffer; |
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} |
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sub xml2easytree { |
sub getTargetDetails { |
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my $self = shift; |
my $self = shift; |
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# convert xml data to native perl data structure |
my $target = shift; |
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my $parser = XML::Parser->new( Style => 'EasyTree', Handlers => { Char => sub {} } ); |
my $options = shift; |
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my $data = $parser->parse($self->{buffer}); |
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# check cache and return result from there |
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my $hash = $data->[0]; |
if (my $result = $self->{cache}->{targets}->{$target} and not $options->{force}) { |
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return $result; |
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# trace |
} |
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#print Dumper($hash); |
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#exit; |
# get metadata for single task from storage |
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my $mdbe = $self->accessMetadata(); |
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$self->{payload} = $hash; |
$mdbe->sendQuery("*/target[\@name=\"$target\"]"); |
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# FIXME: this is wrong behaviour! upper statement should return a proper |
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# result, which itself (already) has the method 'isEmpty' or similar... |
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if ($mdbe->isEmpty()) { |
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$self->log( "Target '$target' not found.", 'notice' ); |
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return; |
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} |
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my $tree = $mdbe->toEasyTree(); |
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# trace |
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#print Dumper($tree); |
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#exit; |
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return $tree; |
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} |
} |
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sub xml2simplehash { |
sub indexTargets { |
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my $self = shift; |
my $self = shift; |
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$self->{payload} = XMLin($self->{buffer}); |
my $options = shift; |
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# determine filename for cache-file |
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my $filename = 'rap.xml.cache'; |
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if (my $rapfile = $self->{__rap}->{filename}) { |
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if (my $path = dirname($rapfile)) { |
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$filename = $path . '/' . $filename; |
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} |
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} |
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if ($options->{build}) { |
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$self->log("Building index of Targets", 'notice'); |
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# clear cache |
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delete $self->{cache}->{targets}; |
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my $list = $self->getTargetList(); |
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foreach my $target (@$list) { |
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$self->log("Reading target: $target->{name}", 'info'); |
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my $details = $self->getTargetDetails($target->{name}, { force => 1 }); |
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$self->{cache}->{targets}->{$target->{name}} = $details; |
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} |
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store $self->{cache}->{targets}, $filename; |
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} elsif ($options->{load}) { |
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if (not -e $filename) { |
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return; |
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} |
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if ($self->{cache}->{targets} = retrieve($filename)) { |
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return 1; |
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} |
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} else { |
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$self->log("Please call with options build or load", 'warning'); |
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} |
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} |
} |
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1; |
1; |