Bio::WebAgent(3) User Contributed Perl Documentation Bio::WebAgent(3)NAMEBio::WebAgent - A base class for Web (any protocol) access
SYNOPSIS
# This is a abstract superclass for bioperl modules accessing web
# resources - normally you do not instantiate it but one of its
# subclasess.
DESCRIPTION
This abstract superclass is a subclass of LWP::UserAgent which allows
protocol independent access of remote locations over the Net.
It takes care of error handling, proxies and various net protocols.
BioPerl classes accessing the net should inherit from it. For details,
see LWP::UserAgent.
The interface is still evolving. For now, two public methods have been
copied from Bio::DB::WebDBSeqI: delay() and delay_policy. These are
used to prevent overwhelming the server by rapidly repeated . Ideally
there should be a common abstract superclass with these. See delay.
SEE ALSO
LWP::UserAgent, Bio::DB::WebDBSeqI,
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
Heikki Lehvaslaiho, heikki-at-bioperl-dot-org
COPYRIGHT
Copyright (c) 2003, Heikki Lehvaslaiho 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.
APPENDIX
The rest of the documentation details each of the object methods.
Internal methods are usually preceded with a _
url
Usage : $agent->url
Returns : URL to reach out to Net
Args : string
delay
Title : delay
Usage : $secs = $self->delay([$secs])
Function: get/set number of seconds to delay between fetches
Returns : number of seconds to delay
Args : new value
NOTE: the default is to use the value specified by delay_policy().
This can be overridden by calling this method, or by passing the -delay
argument to new().
delay_policy
Title : delay_policy
Usage : $secs = $self->delay_policy
Function: return number of seconds to delay between calls to remote db
Returns : number of seconds to delay
Args : none
NOTE: The default delay policy is 3s. Override in subclasses to
implement other delays. The timer has only second resolution, so the
delay will actually be +/- 1s.
sleep
Title : sleep
Usage : $self->sleep
Function: sleep for a number of seconds indicated by the delay policy
Returns : none
Args : none
NOTE: This method keeps track of the last time it was called and only
imposes a sleep if it was called more recently than the delay_policy()
allows.
perl v5.14.1 2011-07-22 Bio::WebAgent(3)
