Provided by: libbio-eutilities-perl_1.75-4_all bug


       Bio::Tools::EUtilities::HistoryI - Simple extension of EUtilDataI interface class for
       classes which hold NCBI server history data.


       version 1.75


         #should work for any class which is-a HistoryI

         if ($obj->has_History) {
             # do something here

         ($webenv, $querykey) = $obj->history;

         $obj->history($webenv, $querykey);

         $webenv = $obj->get_webenv;

         $query_key = $obj->get_query_key;


       This class extends methods for any EUtilDataI implementation allow instances to dealwith
       NCBI history data (WebEnv and query_key).  These can be used as parameters for further
       queries against data sets stored on the NCBI server, much like NCBI's Entrez search
       history. These are important when one wants to run complex queries using esearch, retrieve
       related data using elink, and retrieve large datasets using epost/efetch.

       The simplest implementation is Bio::Tools::EUtilities::History, which holds the history
       data for epost.  See also Bio::Tools::EUtilities::Query (esearch) and
       Bio::Tools::EUtilities::LinkSet (elink), which also implement HistoryI.

        Title    : history
        Usage    : my ($webenv, $qk) = $hist->history
        Function : Get/Set two-element list of webenv() and query_key()
        Returns  : array
        Args     : two-element list of webenv, querykey

        Title    : get_webenv
        Usage    : my $webenv = $hist->get_webenv
        Function : returns web environment key needed to retrieve results from
                   NCBI server
        Returns  : string (encoded key)
        Args     : none

        Title    : get_query_key
        Usage    : my $qk = $hist->get_query_key
        Function : returns query key (integer) for the history number for this session
        Returns  : integer
        Args     : none


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       This software is copyright (c) 2006-2013 by Chris Fields.

       This software is available under the same terms as the perl 5 programming language system