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1 # $Id: AnalysisResult.pm,v 1.12 2002/10/22 07:38:45 lapp Exp $
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2 #
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3 # BioPerl module for Bio::Tools::AnalysisResult
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4 #
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5 # Cared for by Hilmar Lapp <hlapp@gmx.net>
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6 #
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7 # Copyright Hilmar Lapp
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8 #
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9 # You may distribute this module under the same terms as perl itself
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10
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11 # POD documentation - main docs before the code
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12
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13 =head1 NAME
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14
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15 Bio::Tools::AnalysisResult - Base class for analysis result objects and parsers
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16
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17 =head1 SYNOPSIS
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18
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19 # obtain a AnalysisResult derived object somehow
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20 print "Method ", $result->analysis_method(),
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21 ", version " $result->analysis_method_version(),
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22 ", performed on ", $result->analysis_date(), "\n";
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23 # annotate a sequence utilizing SeqAnalysisParserI methods
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24 while($feat = $result->next_feature()) {
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25 $seq->add_SeqFeature($feat);
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26 }
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27 $result->close();
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28 # query object, e.g. a Bio::SeqI implementing object
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29 $queryseq = $result->analysis_query();
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30 # Subject of the analysis -- may be undefined. Refer to derived module
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31 # to find out what is returned.
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32 $subject = $result->analysis_subject();
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33
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34 =head1 DESCRIPTION
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35
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36 The AnalysisResult module is supposed to be the base class for modules
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37 encapsulating parsers and interpreters for the result of a analysis that was
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38 carried out with a query sequence.
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39
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40 The notion of an analysis represented by this base class is that of a unary or
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41 binary operator, taking either one query or a query and a subject and producing
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42 a result. The query is e.g. a sequence, and a subject is either a sequence,
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43 too, or a database of sequences.
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44
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45 This module also implements the Bio::SeqAnalysisParserI interface, and thus
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46 can be used wherever such an object fits.
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47 See L<Bio::SeqAnalysisParserI|Bio::SeqAnalysisParserI>.
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48 Developers will find a ready-to-use B<parse()> method, but need to implement
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49 B<next_feature()> in an inheriting class. Support for initialization with input
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50 file names and reading from streams is also ready to use.
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51
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52 Note that this module does not provide support for B<running> an analysis.
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53 Rather, it is positioned in the subsequent parsing step (concerned with
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54 turning raw results into BioPerl objects).
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55
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56 =head1 FEEDBACK
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57
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58 =head2 Mailing Lists
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59
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60 User feedback is an integral part of the evolution of this and other
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61 Bioperl modules. Send your comments and suggestions preferably to one
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62 of the Bioperl mailing lists. Your participation is much appreciated.
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63
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64 bioperl-l@bioperl.org - General discussion
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65 http://bio.perl.org/MailList.html - About the mailing lists
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66
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67 =head2 Reporting Bugs
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68
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69 Report bugs to the Bioperl bug tracking system to help us keep track
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70 the bugs and their resolution. Bug reports can be submitted via email
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71 or the web:
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72
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73 bioperl-bugs@bio.perl.org
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74 http://bugzilla.bioperl.org/
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75
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76 =head1 AUTHOR - Hilmar Lapp
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77
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78 Email hlapp@gmx.net
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79
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80 Describe contact details here
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81
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82 =head1 APPENDIX
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83
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84 The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _
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85
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86 =cut
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87
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88
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89 # Let the code begin...
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90
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91
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92 package Bio::Tools::AnalysisResult;
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93 use vars qw(@ISA);
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94 use strict;
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95
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96 use Bio::Root::Root;
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97 use Bio::Root::IO;
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98 use Bio::SeqAnalysisParserI;
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99 use Bio::AnalysisResultI;
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100
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101 @ISA = qw(Bio::Root::Root Bio::SeqAnalysisParserI
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102 Bio::AnalysisResultI Bio::Root::IO);
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103
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104 sub new {
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105 my ($class, @args) = @_;
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106 my $self = $class->SUPER::new(@args);
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107 $self->_initialize(@args);
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108 return $self;
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109 }
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110
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111 sub _initialize {
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112 my($self,@args) = @_;
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113
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114 my $make = $self->SUPER::_initialize(@args);
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115
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116 $self->_initialize_state(@args);
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117 return $make; # success - we hope!
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118 }
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119
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120 =head2 _initialize_state
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121
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122 Title : _initialize_state
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123 Usage : n/a; usually called by _initialize()
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124 Function: This method is for BioPerl B<developers> only, as indicated by the
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125 leading underscore in its name.
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126
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127 Performs initialization or reset of the state of this object. The
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128 difference to _initialize() is that it may be called at any time,
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129 and repeatedly within the lifetime of this object. B<Note, however,
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130 that this is potentially dangerous in a multi-threading
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131 environment. In general, calling this method twice is discouraged
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132 for this reason.
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133
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134 This method is supposed to reset the state such that any 'history'
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135 is lost. State information that does not change during object
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136 lifetime is not considered as history, e.g. parent, name, etc shall
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137 not be reset. An inheriting object should only be concerned with
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138 state information it introduces itself, and for everything else
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139 call SUPER::_initialize_state(@args).
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140
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141 An example is parsing an input file: a state reset implies
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142 discarding any unread input, and the actual input itself, followed
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143 by setting the new input.
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144
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145 The argument syntax is the same as for L<new()|new> and L<_initialize()|_initialize>,
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146 i.e., named parameters following the -name=>$value convention.
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147 The following parameters are dealt with by the implementation
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148 provided here:
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149 -INPUT, -FH, -FILE
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150 (tags are case-insensitive).
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151 Example :
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152 Returns :
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153 Args :
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154
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155 =cut
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156
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157 sub _initialize_state {
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158 my ($self,@args) = @_;
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159
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160 $self->close();
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161 $self->_initialize_io(@args);
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162
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163 $self->{'_analysis_sbjct'} = undef;
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164 $self->{'_analysis_query'} = undef;
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165 $self->{'_analysis_prog'} = undef;
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166 $self->{'_analysis_progVersion'} = undef;
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167 $self->{'_analysis_date'} = undef;
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168
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169 return 1;
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170 }
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171
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172 # =head2 parse
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173 #
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174 # Title : parse
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175 # Usage : $obj->parse(-input=>$inputobj, [ -params=>[@params] ],
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176 # [ -method => $method ] )
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177 # Function: Sets up parsing for feature retrieval from an analysis file,
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178 # or object.
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179 #
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180 # This method was originally required by SeqAnalysisParserI, but
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181 # is now discouraged due to potential problems in a multi-
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182 # threading environment (CORBA!). If called only once, it doesn't
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183 # add any functionality to calling new() with the same
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184 # parameters.
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185 #
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186 # The implementation provided here calls automatically
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187 # _initialize_state() and passes on -input=>$inputobj and
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188 # @params as final arguments.
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189 # Example :
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190 # Returns : void
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191 # Args : B<input> - object/file where analysis are coming from
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192 # B<params> - parameter to use when parsing/running analysis
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193 # B<method> - method of analysis
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194 #
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195 # =cut
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196
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197 sub parse {
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198 my ($self, @args) = @_;
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199
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200 my ($input, $params, $method) =
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201 $self->_rearrange([qw(INPUT
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202 PARAMS
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203 METHOD
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204 )],
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205 @args);
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206
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207 # initialize with new input
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208 if($params) {
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209 $self->_initialize_state('-input' => $input, @$params);
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210 } else {
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211 $self->_initialize_state('-input' => $input);
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212 }
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213 $self->analysis_method($method) if $method;
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214 }
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215
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216 =head2 analysis_query
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217
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218 Usage : $query_obj = $result->analysis_query();
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219 Purpose : Set/Get the name of the query used to generate the result, that
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220 is, the entity on which the analysis was performed. Will mostly
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221 be a sequence object (Bio::PrimarySeq compatible).
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222 Argument :
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223 Returns : The object set before. Mostly a Bio::PrimarySeq compatible object.
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224
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225 =cut
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226
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227 #--------
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228 sub analysis_query {
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229 my ($self, $obj) = @_;
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230 if($obj) {
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231 $self->{'_analysis_query'} = $obj;
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232 }
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233 return $self->{'_analysis_query'};
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234 }
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235 #--------
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236
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237 =head2 analysis_subject
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238
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239 Usage : $result->analyis_subject();
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240 Purpose : Set/Get the subject of the analysis against which it was
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241 performed. For similarity searches it will probably be a database,
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242 and for sequence feature predictions (exons, promoters, etc) it
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243 may be a collection of models or homologous sequences that were
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244 used, or undefined.
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245 Returns : The object that was set before, or undef.
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246 Argument :
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247
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248 =cut
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249
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250 #---------------
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251 sub analysis_subject {
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252 #---------------
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253 my ($self, $sbjct_obj) = @_;
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254 if($sbjct_obj) {
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255 $self->{'_analysis_sbjct'} = $sbjct_obj;
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256 }
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257 return $self->{'_analysis_sbjct'};
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258 }
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259
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260
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261 =head2 analysis_date
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262
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263 Usage : $result->analysis_date();
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264 Purpose : Set/Get the date on which the analysis was performed.
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265 Returns : String
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266 Argument :
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267 Comments :
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268
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269 =cut
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270
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271 #----------
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272 sub analysis_date {
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273 my ($self, $date) = @_;
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274 if($date) {
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275 $self->{'_analysis_date'} = $date;
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276 }
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277 return $self->{'_analysis_date'};
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278 }
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279 #----------
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280
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281 =head2 analysis_method
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282
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283 Usage : $result->analysis_method();
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284 Purpose : Set/Get the name of the sequence analysis method that was used
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285 to produce this result (BLASTP, FASTA, etc.). May also be the
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286 actual name of a program.
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287 Returns : String
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288 Argument : n/a
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289
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290 =cut
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291
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292 #-------------
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293 sub analysis_method {
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294 #-------------
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295 my ($self, $method) = @_;
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296 if($method) {
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297 $self->{'_analysis_prog'} = $method;
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298 }
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299 return $self->{'_analysis_prog'};
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300 }
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301
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302 =head2 analysis_method_version
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303
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304 Usage : $result->analysis_method_version();
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305 Purpose : Set/Get the version string of the analysis program.
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306 : (e.g., 1.4.9MP, 2.0a19MP-WashU).
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307 Returns : String
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308 Argument : n/a
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309
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310 =cut
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311
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312 #---------------------
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313 sub analysis_method_version {
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314 #---------------------
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315 my ($self, $version) = @_;
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316 if($version) {
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317 $self->{'_analysis_progVersion'} = $version;
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318 }
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319 return $self->{'_analysis_progVersion'};
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320 }
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321
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322
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323 1;
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