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Bio::AnalysisI(3)     User Contributed Perl Documentation    Bio::AnalysisI(3)

NAME
       Bio::AnalysisI - An interface to any (local or remote) analysis tool

SYNOPSIS
       This is an interface module - you do not instantiate it.	 Use
       "Bio::Tools::Run::Analysis" module:

	 use Bio::Tools::Run::Analysis;
	 my $tool = Bio::Tools::Run::Analysis->new(@args);

DESCRIPTION
       This interface contains all public methods for accessing and
       controlling local and remote analysis tools. It is meant to be used on
       the client side.

FEEDBACK
   Mailing Lists
       User feedback is an integral part of the evolution of this and other
       Bioperl modules. Send your comments and suggestions preferably to the
       Bioperl mailing list.  Your participation is much appreciated.

	 bioperl-l@bioperl.org			- General discussion
	 http://bioperl.org/wiki/Mailing_lists	- About the mailing lists

   Support
       Please direct usage questions or support issues to the mailing list:

       bioperl-l@bioperl.org

       rather than to the module maintainer directly. Many experienced and
       reponsive experts will be able look at the problem and quickly address
       it. Please include a thorough description of the problem with code and
       data examples if at all possible.

   Reporting Bugs
       Report bugs to the Bioperl bug tracking system to help us keep track of
       the bugs and their resolution. Bug reports can be submitted via the
       web:

	 http://bugzilla.open-bio.org/

AUTHOR
       Martin Senger (martin.senger@gmail.com)

COPYRIGHT
       Copyright (c) 2003, Martin Senger and EMBL-EBI.	All Rights Reserved.

       This module is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.

DISCLAIMER
       This software is provided "as is" without warranty of any kind.

SEE ALSO
       http://www.ebi.ac.uk/Tools/webservices/soaplab/guide

APPENDIX
       This is actually the main documentation...

       If you try to call any of these methods directly on this
       "Bio::AnalysisI" object you will get a not implemented error message.
       You need to call them on a "Bio::Tools::Run::Analysis" object instead.

   analysis_name
	Usage	: $tool->analysis_name;
	Returns : a name of this analysis
	Args	: none

   analysis_spec
	Usage	: $tool->analysis_spec;
	Returns : a hash reference describing this analysis
	Args	: none

       The returned hash reference uses the following keys (not all of them
       always present, perhaps others present as well): "name", "type",
       "version", "supplier", "installation", "description".

       Here is an example output:

	 Analysis 'edit.seqret':
	       installation => EMBL-EBI
	       description => Reads and writes (returns) sequences
	       supplier => EMBOSS
	       version => 2.6.0
	       type => edit
	       name => seqret

   describe
	Usage	: $tool->analysis_spec;
	Returns : an XML detailed description of this analysis
	Args	: none

       The returned XML string contains metadata describing this analysis
       service. It includes also metadata returned (and easier used) by method
       "analysis_spec", "input_spec" and "result_spec".

       The DTD used for returned metadata is based on the adopted standard
       (BSA specification for analysis engine):

	 <!ELEMENT DsLSRAnalysis (analysis)+>

	 <!ELEMENT analysis (description?, input*, output*, extension?)>

	 <!ATTLIST analysis
	     type	   CDATA #REQUIRED
	     name	   CDATA #IMPLIED
	     version	   CDATA #IMPLIED
	     supplier	   CDATA #IMPLIED
	     installation  CDATA #IMPLIED>

	 <!ELEMENT description ANY>
	 <!ELEMENT extension ANY>

	 <!ELEMENT input (default?, allowed*, extension?)>

	 <!ATTLIST input
	     type	   CDATA #REQUIRED
	     name	   CDATA #REQUIRED
	     mandatory	   (true|false) "false">

	 <!ELEMENT default (#PCDATA)>
	 <!ELEMENT allowed (#PCDATA)>

	 <!ELEMENT output (extension?)>

	 <!ATTLIST output
	     type	   CDATA #REQUIRED
	     name	   CDATA #REQUIRED>

       But the DTD may be extended by provider-specific metadata. For example,
       the EBI experimental SOAP-based service on top of EMBOSS uses DTD
       explained at "http://www.ebi.ac.uk/~senger/applab".

   input_spec
	Usage	: $tool->input_spec;
	Returns : an array reference with hashes as elements
	Args	: none

       The analysis input data are named, and can be also associated with a
       default value, with allowed values and with few other attributes. The
       names are important for feeding the service with the input data (the
       inputs are given to methods "create_job", "Bio::AnalysisI|run", and/or
       "Bio::AnalysisI|wait_for" as name/value pairs).

       Here is a (slightly shortened) example of an input specification:

	$input_spec = [
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'sequence_usa'
		 },
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'sequence_direct_data'
		 },
		 {
		   'mandatory' => 'false',
		   'allowed_values' => [
					 'gcg',
					 'gcg8',
					 ...
					 'raw'
				       ],
		   'type' => 'String',
		   'name' => 'sformat'
		 },
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'sbegin'
		 },
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'send'
		 },
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'sprotein'
		 },
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'snucleotide'
		 },
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'sreverse'
		 },
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'slower'
		 },
		 {
		   'mandatory' => 'false',
		   'type' => 'String',
		   'name' => 'supper'
		 },
		 {
		   'mandatory' => 'false',
		   'default' => 'false',
		   'type' => 'String',
		   'name' => 'firstonly'
		 },
		 {
		   'mandatory' => 'false',
		   'default' => 'fasta',
		   'allowed_values' => [
					 'gcg',
					 'gcg8',
					 'embl',
					 ...
					 'raw'
				       ],
		   'type' => 'String',
		   'name' => 'osformat'
		 }
	       ];

   result_spec
	Usage	: $tool->result_spec;
	Returns : a hash reference with result names as keys
		  and result types as values
	Args	: none

       The analysis results are named and can be retrieved using their names
       by methods "results" and "result".

       Here is an example of the result specification (again for the service
       edit.seqret):

	 $result_spec = {
		 'outseq' => 'String',
		 'report' => 'String',
		 'detailed_status' => 'String'
	       };

   create_job
	Usage	: $tool->create_job ( {'sequence'=>'tatat'} )
	Returns : Bio::Tools::Run::Analysis::Job
	Args	: data and parameters for this execution
		  (in various formats)

       Create an object representing a single execution of this analysis tool.

       Call this method if you wish to "stage the scene" - to create a job
       with all input data but without actually running it. This method is
       called automatically from other methods ("Bio::AnalysisI|run" and
       "Bio::AnalysisI|wait_for") so usually you do not need to call it
       directly.

       The input data and prameters for this execution can be specified in
       various ways:

       array reference
	   The array has scalar elements of the form

	      name = [[@]value]

	   where "name" is the name of an input data or input parameter (see
	   method "input_spec" for finding what names are recognized by this
	   analysis) and "value" is a value for this data/parameter. If
	   "value" is missing a 1 is assumed (which is convenient for the
	   boolean options). If "value" starts with "@" it is treated as a
	   local filename, and its contents is used as the data/parameter
	   value.

       hash reference
	   The same as with the array reference but now there is no need to
	   use an equal sign. The hash keys are input names and hash values
	   their data. The values can again start with a "@" sign indicating a
	   local filename.

       scalar
	   In this case, the parameter represents a job ID obtained in some
	   previous invocation - such job already exists on the server side,
	   and we are just re-creating it here using the same job ID.

	   TBD: here we should allow the same by using a reference to the
	   Bio::Tools::Run::Analysis::Job object.

       undef
	   Finally, if the parameter is undefined, ask server to create an
	   empty job. The input data may be added later using "set_data..."
	   method(s) - see scripts/papplmaker.PLS for details.

   run
	Usage	: $tool->run ( ['sequence=@my.seq', 'osformat=embl'] )
	Returns : Bio::Tools::Run::Analysis::Job,
		  representing started job (an execution)
	Args	: the same as for create_job

       Create a job and start it, but do not wait for its completion.

   wait_for
	Usage	: $tool->wait_for ( { 'sequence' => '@my,file' } )
	Returns : Bio::Tools::Run::Analysis::Job,
		  representing finished job
	Args	: the same as for create_job

       Create a job, start it and wait for its completion.

       Note that this is a blocking method. It returns only after the executed
       job finishes, either normally or by an error.

       Usually, after this call, you ask for results of the finished job:

	   $analysis->wait_for (...)->results;

Module Bio::AnalysisI::JobI
       An interface to the public methods provided by
       "Bio::Tools::Run::Analysis::Job" objects.

       The "Bio::Tools::Run::Analysis::Job" objects represent a created,
       running, or finished execution of an analysis tool.

       The factory for these objects is module "Bio::Tools::Run::Analysis"
       where the following methods return an "Bio::Tools::Run::Analysis::Job"
       object:

	   create_job	(returning a prepared job)
	   run		(returning a running job)
	   wait_for	(returning a finished job)

   id
	Usage	: $job->id;
	Returns : this job ID
	Args	: none

       Each job (an execution) is identifiable by this unique ID which can be
       used later to re-create the same job (in other words: to re-connect to
       the same job). It is useful in cases when a job takes long time to
       finish and your client program does not want to wait for it within the
       same session.

   Bio::AnalysisI::JobI::run
	Usage	: $job->run
	Returns : itself
	Args	: none

       It starts previously created job.  The job already must have all input
       data filled-in. This differs from the method of the same name of the
       "Bio::Tools::Run::Analysis" object where the
       "Bio::AnalysisI::JobI::run" method creates also a new job allowing to
       set input data.

   Bio::AnalysisI::JobI::wait_for
	Usage	: $job->wait_for
	Returns : itself
	Args	: none

       It waits until a previously started execution of this job finishes.

   terminate
	Usage	: $job->terminate
	Returns : itself
	Args	: none

       Stop the currently running job (represented by this object). This is a
       definitive stop, there is no way to resume it later.

   last_event
	Usage	: $job->last_event
	Returns : an XML string
	Args	: none

       It returns a short XML document showing what happened last with this
       job. This is the used DTD:

	  <!-- place for extensions -->
	  <!ENTITY % event_body_template "(state_changed | heartbeat_progress | percent_progress | time_progress | step_progress)">

	  <!ELEMENT analysis_event (message?, (%event_body_template;)?)>

	  <!ATTLIST analysis_event
	      timestamp	 CDATA #IMPLIED>

	  <!ELEMENT message (#PCDATA)>

	  <!ELEMENT state_changed EMPTY>
	  <!ENTITY % analysis_state "created | running | completed | terminated_by_request | terminated_by_error">
	  <!ATTLIST state_changed
	      previous_state  (%analysis_state;) "created"
	      new_state	      (%analysis_state;) "created">

	  <!ELEMENT heartbeat_progress EMPTY>

	  <!ELEMENT percent_progress EMPTY>
	  <!ATTLIST percent_progress
	      percentage CDATA #REQUIRED>

	  <!ELEMENT time_progress EMPTY>
	  <!ATTLIST time_progress
	      remaining CDATA #REQUIRED>

	  <!ELEMENT step_progress EMPTY>
	  <!ATTLIST step_progress
	      total_steps      CDATA #IMPLIED
	      steps_completed CDATA #REQUIRED>

       Here is an example what is returned after a job was created and
       started, but before it finishes (note that the example uses an analysis
       'showdb' which does not need any input data):

	  use Bio::Tools::Run::Analysis;
	  print new Bio::Tools::Run::Analysis (-name => 'display.showdb')
		    ->run
		    ->last_event;

       It prints:

	  <?xml version = "1.0"?>
	  <analysis_event>
	    <message>Mar 3, 2003 5:14:46 PM (Europe/London)</message>
	    <state_changed previous_state="created" new_state="running"/>
	  </analysis_event>

       The same example but now after it finishes:

	  use Bio::Tools::Run::Analysis;
	  print new Bio::Tools::Run::Analysis (-name => 'display.showdb')
		    ->wait_for
		    ->last_event;

	  <?xml version = "1.0"?>
	  <analysis_event>
	    <message>Mar 3, 2003 5:17:14 PM (Europe/London)</message>
	    <state_changed previous_state="running" new_state="completed"/>
	  </analysis_event>

   status
	Usage	: $job->status
	Returns : string describing the job status
	Args	: none

       It returns one of the following strings (and perhaps more if a server
       implementation extended possible job states):

	  CREATED
	  RUNNING
	  COMPLETED
	  TERMINATED_BY_REQUEST
	  TERMINATED_BY_ERROR

   created
	Usage	: $job->created (1)
	Returns : time when this job was created
	Args	: optional

       Without any argument it returns a time of creation of this job in
       seconds, counting from the beginning of the UNIX epoch (1.1.1970). With
       a true argument it returns a formatted time, using rules described in
       "Bio::Tools::Run::Analysis::Utils::format_time".

   started
	Usage	: $job->started (1)
	Returns : time when this job was started
	Args	: optional

       See "created".

   ended
	Usage	: $job->ended (1)
	Returns : time when this job was terminated
	Args	: optional

       See "created".

   elapsed
	Usage	: $job->elapsed
	Returns : elapsed time of the execution of the given job
		  (in milliseconds), or 0 of job was not yet started
	Args	: none

       Note that some server implementations cannot count in millisecond - so
       the returned time may be rounded to seconds.

   times
	Usage	: $job->times ('formatted')
	Returns : a hash refrence with all time characteristics
	Args	: optional

       It is a convenient method returning a hash reference with the folowing
       keys:

	  created
	  started
	  ended
	  elapsed

       See "create" for remarks on time formating.

       An example - both for unformatted and formatted times:

	  use Data::Dumper;
	  use Bio::Tools::Run::Analysis;
	  my $rh = Bio::Tools::Run::Analysis->new(-name => 'nucleic_cpg_islands.cpgplot')
		    ->wait_for ( { 'sequence_usa' => 'embl:hsu52852' } )
		    ->times (1);
	  print Data::Dumper->Dump ( [$rh], ['Times']);
	  $rh = Bio::Tools::Run::Analysis->new(-name => 'nucleic_cpg_islands.cpgplot')
		    ->wait_for ( { 'sequence_usa' => 'embl:AL499624' } )
		    ->times;
	  print Data::Dumper->Dump ( [$rh], ['Times']);

	  $Times = {
		  'ended'   => 'Mon Mar	 3 17:52:06 2003',
		  'started' => 'Mon Mar	 3 17:52:05 2003',
		  'elapsed' => '1000',
		  'created' => 'Mon Mar	 3 17:52:05 2003'
		};
	  $Times = {
		  'ended'   => '1046713961',
		  'started' => '1046713926',
		  'elapsed' => '35000',
		  'created' => '1046713926'
		};

   results
	Usage	: $job->results (...)
	Returns : one or more results created by this job
	Args	: various, see belou

       This is a complex method trying to make sense for all kinds of results.
       Especially it tries to help to put binary results (such as images) into
       local files. Generally it deals with fhe following facts:

       ·   Each analysis tool may produce more results.

       ·   Some results may contain binary data not suitable for printing into
	   a terminal window.

       ·   Some results may be split into variable number of parts (this is
	   mainly true for the image results that can consist of more *.png
	   files).

       Note also that results have names to distinguish if there are more of
       them. The names can be obtained by method "result_spec".

       Here are the rules how the method works:

	   Retrieving NAMED results:
	   -------------------------
	    results ('name1', ...)   => return results as they are, no storing into files

	    results ( { 'name1' => 'filename', ... } )	=> store into 'filename', return 'filename'
	    results ( 'name1=filename', ...)		=> ditto

	    results ( { 'name1' => '-', ... } )		=> send result to the STDOUT, do not return anything
	    results ( 'name1=-', ...)			=> ditto

	    results ( { 'name1' => '@', ... } )	 => store into file whose name is invented by
						    this method, perhaps using RESULT_NAME_TEMPLATE env
	    results ( 'name1=@', ...)		 => ditto

	    results ( { 'name1' => '?', ... } )	 => find of what type is this result and then use
						    {'name1'=>'@' for binary files, and a regular
						    return for non-binary files
	    results ( 'name=?', ...)		 => ditto

	   Retrieving ALL results:
	   -----------------------
	    results()	  => return all results as they are, no storing into files

	    results ('@') => return all results, as if each of them given
			     as {'name' => '@'} (see above)

	    results ('?') => return all results, as if each of them given
			     as {'name' => '?'} (see above)

	   Misc:
	   -----
	    * any result can be returned as a scalar value, or as an array reference
	      (the latter is used for results consisting of more parts, such images);
	      this applies regardless whether the returned result is the result itself
	      or a filename created for the result

	    * look in the documentation of the C<panalysis[.PLS]> script for examples
	      (especially how to use various templates for inventing file names)

   result
	Usage	: $job->result (...)
	Returns : the first result
	Args	: see 'results'

   remove
	Usage	: $job->remove
	Returns : 1
	Args	: none

       The job object is not actually removed in this time but it is marked
       (setting 1 to "_destroy_on_exit" attribute) as ready for deletion when
       the client program ends (including a request to server to forget the
       job mirror object on the server side).

perl v5.14.1			  2011-07-22		     Bio::AnalysisI(3)
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