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package Siebel::Srvrmgr::ListParser::Output::Tabular::Struct; |
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=pod |
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=head1 NAME |
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Siebel::Srvrmgr::ListParser::Output::Tabular::Struct - base class for parsing srvrmgr tabular output |
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=cut |
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use Moose; |
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use namespace::autoclean; |
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use Carp; |
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=pod |
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=head1 DESCRIPTION |
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This is a base classes to parse C<srvrmgr> output in tabular form. That means that the output is expected to be |
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as a table, having a header and a clear definition of columns. |
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The subclasses of this class are expected to be used inside an output class like L<Siebel::Srvrmgr::ListParser::Output::Tabular> |
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since it will know the differences in parsing fixed width output from delimited one. |
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=head1 ATTRIBUTES |
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=head2 header_regex |
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This attribute is read-only. |
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The regular expression used to match the header of the list <command> output (the sequence of column names). |
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There is a L<Moose> C<builder> associated with it, so the definition of the regular expression is created automatically. |
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This attribute is also C<lazy>. |
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=cut |
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has 'header_regex' => ( |
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is => 'ro', |
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isa => 'Str', |
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builder => '_build_header_regex', |
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writer => '_set_header_regex', |
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reader => 'get_header_regex', |
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lazy => 1 |
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); |
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sub _build_header_regex { |
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my $self = shift; |
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85
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3116
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$self->_set_header_regex( |
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join( $self->get_col_sep(), @{ $self->get_header_cols() } ) ); |
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} |
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=pod |
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=head2 col_sep |
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This attribute is read-only. |
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A regular expression string used to match the columns separator. |
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col_sep has a builder C<sub> that must be override by subclasses of this class or |
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an exception will be raised. |
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This attribute is also C<lazy>. |
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=cut |
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has 'col_sep' => ( |
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is => 'ro', |
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isa => 'Str', |
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builder => '_build_col_sep', |
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writer => '_set_col_sep', |
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reader => 'get_col_sep', |
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lazy => 1 |
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); |
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sub _build_col_sep { |
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confess '_build_col_sep must be overrided by subclasses'; |
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} |
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=head2 header_cols |
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This attribute is read-only and required during object instantiation. |
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An array reference with all the header columns names, in the exact sequence their appear in the output. |
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=cut |
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has 'header_cols' => ( |
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is => 'ro', |
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isa => 'ArrayRef', |
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reader => 'get_header_cols', |
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writer => '_set_header_cols', |
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required => 1 |
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); |
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=pod |
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105
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=head1 METHODS |
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All the attributes, since read-only, have their associated getters. |
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109
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=head2 get_col_sep |
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Returns the col_sep attribute value. |
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=head2 get_header_cols |
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Returns the header_cols attribute value. |
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=head2 split_fields |
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Split a output line into fields as defined by C<get_col_sep> method. It expects a string as parameter. |
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Returns an array reference. |
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123
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If the separator could not be matched against the string, returns C<undef>. |
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125
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=cut |
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sub split_fields { |
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129
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3959
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3959
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1
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3781
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my $self = shift; |
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2605
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my $line = shift; |
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132
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3959
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122963
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my $sep = $self->get_col_sep(); |
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134
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7712
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my $comp_sep = qr/$sep/; |
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136
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8878
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if ( $line =~ $comp_sep ) { |
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138
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3957
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16390
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my @columns = split( $comp_sep, $line ); |
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9503
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return \@columns; |
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141
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} |
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else { |
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144
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9
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return undef; |
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146
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} |
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148
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} |
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150
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=pod |
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152
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=head2 define_fields_pattern |
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154
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This method must be overrided by subclasses of this classes or an exception will be raised. |
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156
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It is responsible to define automatically the fields pattern to be used during parsing to retrieve |
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fields values. |
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159
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=cut |
160
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161
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sub define_fields_pattern { |
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163
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1
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confess |
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'define_fields_pattern must be overrided by subclasses of Siebel::Srvrmgr::ListParser::Output::Tabular::Struct'; |
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166
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} |
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168
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=pod |
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170
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=head2 get_fields |
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172
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This method must be overrided by subclasses of this classes or an exception will be raised. |
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174
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This methods returns the fields data as an array reference. Expects as parameter the string of the line of |
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C<srvrmgr> output. |
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177
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=cut |
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179
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sub get_fields { |
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181
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2
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2
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1
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2601
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confess |
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'get_fields must be overrided by subclasses of Siebel::Srvrmgr::ListParser::Output::Tabular::Struct'; |
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184
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} |
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186
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=pod |
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188
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=head1 CAVEATS |
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190
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All subclasses of Siebel::Srvrmgr::ListParser::Output::Tabular::Struct expect to have both the header and trailer of |
191
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executed commands in C<srvrmgr> program. Removing one or both of them will result in parsing errors and |
192
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probably exceptions. |
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194
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=head1 SEE ALSO |
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196
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=over |
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198
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=item * |
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200
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L<Siebel::Srvrmgr::ListParser::Output::Tabular> |
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202
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=item * |
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204
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L<Moose> |
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=item * |
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208
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L<Siebel::Srvrmgr::ListParser::Output::Tabular::Struct::Fixed> |
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=item * |
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212
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L<Siebel::Srvrmgr::ListParser::Output::Tabular::Struct::Delimited> |
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=back |
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216
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=head1 AUTHOR |
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218
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Alceu Rodrigues de Freitas Junior, E<lt>arfreitas@cpan.orgE<gt>. |
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220
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=head1 COPYRIGHT AND LICENSE |
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222
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This software is copyright (c) 2013 of Alceu Rodrigues de Freitas Junior, E<lt>arfreitas@cpan.orgE<gt>. |
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224
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This file is part of Siebel Monitoring Tools. |
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226
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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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231
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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 |
234
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GNU General Public License for more details. |
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236
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You should have received a copy of the GNU General Public License |
237
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along with Siebel Monitoring Tools. If not, see L<http://www.gnu.org/licenses/>. |
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239
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=cut |
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241
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__PACKAGE__->meta->make_immutable; |