Bio::DB::Failover - A Bio::DB::RandomAccessI compliant class which wraps a
prioritized list of DBs
$failover = Bio::DB::Failover->new();
$failover->add_database($db);
# fail over Bio::DB::RandomAccessI.pm
# this will check each database in priority, returning when
# the first one succeeds
$seq = $failover->get_Seq_by_id($id);
This module provides fail over access to a set of Bio::DB::RandomAccessI
objects.
Ewan Birney <
[email protected]> originally wrote this class.
Please direct usage questions or support issues to the mailing list:
[email protected]
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.
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://github.com/bioperl/bioperl-live/issues
The rest of the documentation details each of the object methods. Internal
methods are usually preceded with a _
Title : add_database
Usage : add_database(%db)
Function: Adds a database to the Failover object
Returns : Count of number of databases
Args : Array of db resources
Throws : Not a RandomAccessI exception
Title : get_Seq_by_id
Usage : $seq = $db->get_Seq_by_id('ROA1_HUMAN')
Function: Gets a Bio::Seq object by its name
Returns : a Bio::Seq object
Args : the id (as a string) of a sequence
Throws : "no id" exception
Title : get_Seq_by_acc
Usage : $seq = $db->get_Seq_by_acc('X77802');
Function: Gets a Bio::Seq object by accession number
Returns : A Bio::Seq object
Args : accession number (as a string)
Throws : "no id" exception
Title : get_Seq_by_version
Usage : $seq = $db->get_Seq_by_acc('X77802.2');
Function: Gets a Bio::Seq object by versioned accession number
Returns : A Bio::Seq object
Args : accession number (as a string)
Throws : "acc does not exist" exception