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package Siebel::Srvrmgr::ListParser::OutputFactory; |
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=pod |
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=head1 NAME |
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Siebel::Srvrmgr::ListParser::OutputFactory - abstract factory class to create Siebel::Srvrmgr::ListParser::Output objects |
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=cut |
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use warnings; |
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use strict; |
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use MooseX::AbstractFactory; |
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use Carp; |
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use Siebel::Srvrmgr::Regexes qw(CONN_GREET); |
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use Hash::Util qw(lock_hash); |
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=pod |
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=head1 SYNOPSIS |
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use Siebel::Srvrmgr::ListParser::OutputFactory; |
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my $output = Siebel::Srvrmgr::ListParser::OutputFactory->create( |
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$type, |
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{ |
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data_type => $type, |
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raw_data => \@data, |
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cmd_line => 'list something' |
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} |
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); |
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if (Siebel::Srvrmgr::ListParser::OutputFactory->can_create('weirdo')) ? print "can\n" : print "cannot\n"; |
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=head1 DESCRIPTION |
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This is an abstract factory class to create instances of subclass of L<Siebel::Srvrmgr::ListParser::Output> superclass. |
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It has the mapping between the types parsed by L<Siebel::Srvrmgr::ListParser> class to the respective class of output. See |
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C<Siebel::Srvrmgr::ListParser::OutputFactory::table_mapping> for the mapping between types and classes. |
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=head1 METHODS |
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All methods below are class methods. |
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=head2 build |
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Returns the instance of the class defined by the type given as parameter. Expects two parameters: an string with the type |
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of output and an hash reference with the parameters expected by the C<new> method of L<Siebel::Srvrmgr::ListParser::Output> subclasses. |
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A third, optional parameter, is required if the desired instance is a subclass of L<Siebel::Srvrmgr::ListParser::Output::Tabular>: one must |
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pass a single character as the field separator, if exists in the output to be parsed. |
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Despite using L<MooseX::AbstractFactory> to implement the Abstract Factory pattern, this method must be invoked instead of C<create> |
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so the class will be able to make additional checkings necessary to define defaults for subclasses of L<Siebel::Srvrmgr::ListParser::Output::Tabular>. |
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=head2 can_create |
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Expects a string as the output type. |
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Returns true if there is a mapping between the given type and a subclass of L<Siebel::Srvrmgr::ListParser::Output>; |
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otherwise it returns false; |
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=head2 get_mapping |
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Returns an hash reference with the mapping between the parsed types and subclasses of L<Siebel::Srvrmgr::ListParser::Ouput>. |
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The values are array references with the partial classes names and a compiled regular expression to validate the command. |
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=head1 SEE ALSO |
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=over |
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=item * |
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L<MooseX::AbstractFactory> |
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=item * |
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L<Siebel::Srvrmgr::ListParser::Output> |
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=item * |
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L<Siebel::Srvrmgr::ListParser> |
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=back |
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=cut |
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my %table_mapping = ( |
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'list_comp' => ['Tabular::ListComp', qr/^list\scomps?$/], |
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'set_delimiter' => ['Set', qr/^set\sdelimiter/], |
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'list_params' => ['Tabular::ListParams', qr/list\s(advanced\s)?param(eter)?s?(\s(\w+\s)?(for\sserver\s\w+)?(\sfor\s((comp(nent)?)|named\ssubsystem|task)\s\w+)?)?/], |
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'list_comp_def' => ['Tabular::ListCompDef', qr/list\scomp\sdefs?(\s\w+)?/], |
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'greetings' => ['Enterprise', CONN_GREET], |
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'list_comp_types' => ['Tabular::ListCompTypes', qr/list\scomp(nent)?\stypes?$/], |
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'load_preferences' => ['LoadPreferences', qr/^load\spreferences$/], |
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'list_tasks' => ['Tabular::ListTasks', qr/list\stasks(\sfor\sserver\s\w+\scomponent\sgroup?\s\w+)?/], |
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'list_servers' => ['Tabular::ListServers', qr/list\sserver(s)?.*/], |
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'list_sessions' => ['Tabular::ListSessions', qr/^list\s(active|hung)?\s?sessions$/] |
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); |
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lock_hash(%table_mapping); |
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sub get_mapping { |
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my %copy = %table_mapping; |
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return \%copy; |
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} |
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sub can_create { |
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my $class = shift; |
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my $type = shift; |
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return ( exists( $table_mapping{$type} ) ); |
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} |
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sub build { |
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my $class = shift; |
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my $last_cmd_type = shift; |
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my $object_data = shift; # hash ref |
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confess 'object data is required' unless ( defined($object_data) ); |
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if ( $table_mapping{$last_cmd_type}->[0] =~ /^Tabular/ ) { |
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my $field_del = shift; |
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if ( defined($field_del) ) { |
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$object_data->{col_sep} = $field_del; |
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$object_data->{structure_type} = 'delimited'; |
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} |
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else { |
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$object_data->{structure_type} = 'fixed'; |
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} |
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} |
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$class->create( $last_cmd_type, $object_data ); |
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} |
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implementation_class_via sub { |
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my $last_cmd_type = shift; |
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if ( exists( $table_mapping{$last_cmd_type} ) ) { |
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return 'Siebel::Srvrmgr::ListParser::Output::' |
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. $table_mapping{$last_cmd_type}->[0]; |
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} |
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else { |
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confess "Cannot defined a class for command '$last_cmd_type'"; |
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} |
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}; |
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=pod |
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=head1 AUTHOR |
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Alceu Rodrigues de Freitas Junior, E<lt>arfreitas@cpan.orgE<gt>. |
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=head1 COPYRIGHT AND LICENSE |
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This software is copyright (c) 2012 of Alceu Rodrigues de Freitas Junior, E<lt>arfreitas@cpan.orgE<gt>. |
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179
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This file is part of Siebel Monitoring Tools. |
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Siebel Monitoring Tools is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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Siebel Monitoring Tools is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with Siebel Monitoring Tools. If not, see L<http://www.gnu.org/licenses/>. |
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=cut |
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1; |