NAME

Bio::Tools::EUtilities::EUtilDataI

SYNOPSIS

# say you had some data in a hash ref ($data) and wanted to create hierarchies
# of object using the same interface, starting with the topmost...

# $object is a Bio::Tools::EUtilities::EUtilDataI instance

$object->_add_data($data);

# in _add_data()... sort through keys and create subobjects as needed

if ($key eq 'foo') {
   my $sub = Bio::Tools::EUtilities::FooData->new(-eutil => 'efoo',
                                                  -type => 'foo');
   $sub->_add_data($subdata);
   # store into parent object as needed...
   ...
 }

 # access stored data

 while (my $sub = $parent->next_Foo) {...}

DESCRIPTION

This is a simple interface which allows creation of simple typed object hierarchies. Single layers can be accessed via simple iterators (next_* methods) or retrieved all at once (get_*) methods; nested data can be iterated through nested iterators for each object, or retrieved using get_all_* methods.

This interface defines common methods required for all eutil data-holding objects: _add_data(), eutil(), and type(). It also specifies inheriting interface classes use at least one of three methods: get_ids(), get_term(), or get_database(), which are the three types of data that eutils mainly centers on.

Generally, eutil() is the Bio::Tools::EUtilities parser used to set the data. Similarly, datatype() is the specific data type for the class.

Implementations which rely on subclasses to store data and have iterators should also define a generalized rewind() method that (by default) rewinds all iterators to the start. Args passed can specify exactly which iterator to rewind and (if possible) recursively rewind nested object iterators.

As the method implies, _add_data() is a private method that adds data chunks to the object and sets internal parameters for the various data objects. Methods corresponding to the data type simply return the set data or iterate through the data sets if the values are more complex. Data can alternatively be passed through the object constructor.

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 the bugs and their resolution. Bug reports can be submitted via the web.

https://redmine.open-bio.org/projects/bioperl/

NAME

Bio::Tools::EUtilities::EUtilDataI - eutil data object interface

AUTHOR

Email cjfields at bioperl dot org

APPENDIX

The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _

eutil

Title    : eutil
Usage    : $eutil->$foo->eutil
Function : Get/Set eutil
Returns  : string
Args     : string (eutil)
Throws   : on invalid eutil

datatype

Title   : type
Usage   : $type = $qd->datatype;
Function: retrieve simple data type object holds (linkset, docsum, item, etc)
Returns : string (eutil name)
Args    : none
Note    : this is probably more useful for devs than for users as a way to keep
          track of the various types of modules used

rewind

Title    : rewind
Usage    : $esum->rewind
Function : rewinds the requested iterator
Returns  : none
Args     : [OPTIONAL] may include 'all', 'recursive', etc.

_add_data

Title    : _add_data
Usage    : $foo->_add_data($data)
Function : adds data to current object as a chunk
Returns  : none
Args     : hash ref containing relevant data

to_string

Title    : to_string
Usage    : $foo->to_string()
Function : converts current object to string
Returns  : none
Args     : (optional) simple data for text formatting
Note     : Used generally for debugging and for the print_* methods

_text_wrap

Title    : _text_wrap
Usage    : $foo->_text_wrap($string)
Function : private internal wrapper for Text::Wrap::wrap
Returns  : string
Args     : string
Note     : Internal use only.  Simple wrapper method.

AUTHOR

cjfields <cjfields@bioperl.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2011 by Chris Fields.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm Bio::DB::EUtilities

perl -MCPAN -e shell
install Bio::DB::EUtilities