Bio::DB::WebDBSeqI - Object Interface to generalize Web Databases for retrieving sequences
# get a WebDBSeqI object somehow # assuming it is a nucleotide db my $seq = $db->get_Seq_by_id('ROA1_HUMAN')
Provides core set of functionality for connecting to a web based database for retriving sequences.
Users wishing to add another Web Based Sequence Dabatase will need to extend this class (see Bio::DB::SwissProt or Bio::DB::NCBIHelper for examples) and implement the get_request method which returns a HTTP::Request for the specified uids (accessions, ids, etc depending on what query types the database accepts).
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The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _
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 : "id does not exist" 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 : "acc does not exist" exception
Title : get_request Usage : my $url = $self->get_request Function: returns a HTTP::Request object Returns : Args : %qualifiers = a hash of qualifiers (ids, format, etc)
Title : get_Stream_by_id Usage : $stream = $db->get_Stream_by_id( [$uid1, $uid2] ); Function: Gets a series of Seq objects by unique identifiers Returns : a Bio::SeqIO stream object Args : $ref : a reference to an array of unique identifiers for the desired sequence entries
Title : get_Stream_by_acc Usage : $seq = $db->get_Seq_by_acc([$acc1, $acc2]); Function: Gets a series of Seq objects by accession numbers Returns : a Bio::SeqIO stream object Args : $ref : a reference to an array of accession numbers for the desired sequence entries Note : For GenBank, this just calls the same code for get_Stream_by_id()
Title : default_format Usage : my $format = $self->default_format Function: Returns default sequence format for this module Returns : string Args : none
Title : request_format Usage : my ($req_format, $ioformat) = $self->request_format; $self->request_format("genbank"); $self->request_format("fasta"); Function: Get/Set sequence format retrieval. The get-form will normally not be used outside of this and derived modules. Returns : Array of two strings, the first representing the format for retrieval, and the second specifying the corresponding SeqIO format. Args : $format = sequence format
Title : get_seq_stream Usage : my $seqio = $self->get_seq_sream(%qualifiers) Function: builds a url and queries a web db Returns : a Bio::SeqIO stream capable of producing sequence Args : %qualifiers = a hash qualifiers that the implementing class will process to make a url suitable for web querying
Title : url_base_address Usage : my $address = $self->url_base_address or $self->url_base_address($address) Function: Get/Set the base URL for the Web Database Returns : Base URL for the Web Database Args : $address - URL for the WebDatabase
Title : proxy Usage : $httpproxy = $db->proxy('http') or $db->proxy(['http','ftp'], 'http://myproxy' ) Function: Get/Set a proxy for use of proxy Returns : a string indicating the proxy Args : $protocol : an array ref of the protocol(s) to set/get $proxyurl : url of the proxy to use for the specified protocol
Title : retrieval_type Usage : $self->retrieval_type($type); my $type = $self->retrieval_type Function: Get/Set a proxy for retrieval_type (io_string or tempfile) Returns : string representing retrieval type Args : $value - the value to store
Title : url_params Usage : my $params = $self->url_params or $self->url_params($params) Function: Get/Set the URL parameters for the Web Database Returns : url parameters for Web Database Args : $params - parameters to be appended to the URL for the WebDatabase
Title : ua Usage : my $ua = $self->ua or $self->ua($ua) Function: Get/Set a LWP::UserAgent for use Returns : reference to LWP::UserAgent Object Args : $ua - must be a LWP::UserAgent
Title : postprocess_data Usage : $self->postprocess_data ( 'type' => 'string', 'location' => \$datastr); Function: process downloaded data before loading into a Bio::SeqIO Returns : void Args : hash with two keys - 'type' can be 'string' or 'file' - 'location' either file location or string reference containing data
To install Bio::Seq, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Bio::Seq
CPAN shell
perl -MCPAN -e shell install Bio::Seq
For more information on module installation, please visit the detailed CPAN module installation guide.