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Mail::SpamAssassin::BayesStore(User Contributed Perl DocumentatiMail::SpamAssassin::BayesStore(3)

NAME
       Mail::SpamAssassin::BayesStore - Storage Module for default Bayes classifier

DESCRIPTION
       This is the public API for the Bayesian store methods.  Any implementation of the storage
       module for the default Bayes classifier must implement these methods.

METHODS
       new public class (Mail::SpamAssassin::BayesStore) new (Mail::SpamAssassin::Plugin::Bayes
	   $bayes)

	   Description: This method creates a new instance of the Mail::SpamAssassin::BayesStore
	   object.  You must pass in an instance of the Mail::SpamAssassin::Plugin::Bayes object,
	   which is stashed for use throughout the module.

       DB_VERSION
	   public instance (Integer) DB_VERSION \fIs0()

	   Description: This method returns the currently supported database version for the
	   implementation.

       read_db_configs
	   public instance () read_db_configs ()

	   Description: This method reads any needed config variables from the configuration
	   object and then calls the Mail::SpamAssassin::Plugin::Plugin::Bayes read_db_configs
	   method.

       tie_db_readonly
	   public instance (Boolean) tie_db_readonly ()

	   Description: This method opens up the database in readonly mode.

       tie_db_writable
	   public instance (Boolean) tie_db_writable ()

	   Description: This method opens up the database in writable mode.

	   Any callers of this methods should ensure that they call untie_db() afterwards.

       untie_db
	   public instance () untie_db ()

	   Description: This method unties the database.

       calculate_expire_delta
	   public instance (%) calculate_expire_delta (Integer $newest_atime,
							Integer $start,
							Integer $max_expire_mult)

	   Description: This method performs a calculation on the data to determine the optimum
	   atime for token expiration.

       token_expiration
	   public instance (Integer, Integer,
			    Integer, Integer) token_expiration(\% $opts,
							       Integer $newest_atime,
							       Integer $newdelta)

	   Description: This method performs the database specific expiration of tokens based on
	   the passed in $newest_atime and $newdelta.

       expire_old_tokens
	   public instance (Boolean) expire_old_tokens (\% hashref)

	   Description: This method expires old tokens from the database.

       expire_old_tokens_trapped
	   public instance (Boolean) expire_old_tokens_trapped (\% $opts)

	   Description: This methods does the actual token expiration.

	   XXX More docs here about the methodology and what not

       sync_due
	   public instance (Boolean) sync_due ()

	   Description: This methods determines if a sync is due.

       expiry_due
	   public instance (Boolean) expiry_due ()

	   Description: This methods determines if an expire is due.

       seen_get
	   public instance (Char) seen_get (String $msgid)

	   Description: This method retrieves the stored value, if any, for $msgid.  The return
	   value is the stored string ('s' for spam and 'h' for ham) or undef if $msgid is not
	   found.

       seen_put
	   public instance (Boolean) seen_put (String $msgid, Char $flag)

	   Description: This method records $msgid as the type given by $flag.	$flag is one of
	   two values 's' for spam and 'h' for ham.

       seen_delete
	   public instance (Boolean) seen_delete (String $msgid)

	   Description: This method removes $msgid from storage.

       get_storage_variables
	   public instance (@) get_storage_variables ()

	   Description: This method retrieves the various administrative variables used by the
	   Bayes storage implementation.

	   The values returned in the array are in the following order:

	   0: scan count base

	   1: number of spam

	   2: number of ham

	   3: number of tokens in db

	   4: last expire atime

	   5: oldest token in db atime

	   6: db version value

	   7: last journal sync

	   8: last atime delta

	   9: last expire reduction count

	   10: newest token in db atime

       dump_db_toks
	   public instance () dump_db_toks (String $template, String $regex, @ @vars)

	   Description: This method loops over all tokens, computing the probability for the
	   token and then printing it out according to the passed in template.

       set_last_expire
	   public instance (Boolean) _set_last_expire (Integer $time)

	   Description: This method sets the last expire time.

       get_running_expire_tok
	   public instance (Time) get_running_expire_tok ()

	   Description: This method determines if an expire is currently running and returns the
	   time the expire started.

       set_running_expire_tok
	   public instance (Time) set_running_expire_tok ()

	   Description: This method sets the running expire time to the current time.

       remove_running_expire_tok
	   public instance (Boolean) remove_running_expire_tok ()

	   Description: This method removes a currently set running expire time.

       tok_get
	   public instance (Integer, Integer, Time) tok_get (String $token)

	   Description: This method retrieves the specified token ($token) from storage and
	   returns it's spam count, ham acount and last access time.

       tok_get_all
	   public instance (\@) tok_get_all (@ @tokens)

	   Description: This method retrieves the specified tokens (@tokens) from storage and
	   returns an array ref of arrays spam count, ham count and last access time.

       tok_count_change
	   public instance (Boolean) tok_count_change (Integer $spam_count,
						       Integer $ham_count,
						       String $token,
						       Time $atime)

	   Description: This method takes a $spam_count and $ham_count and adds it to $token
	   along with updating $tokens atime with $atime.

       multi_tok_count_change
	   public instance (Boolean) multi_tok_count_change (Integer $spam_count,
					      Integer $ham_count,
	   \% $tokens,					  String $atime)

	   Description: This method takes a $spam_count and $ham_count and adds it to all of the
	   tokens in the $tokens hash ref along with updating each tokens atime with $atime.

       nspam_nham_get
	   public instance (Integer, Integer) nspam_nham_get ()

	   Description: This method retrieves the total number of spam and the total number of
	   ham currently under storage.

       nspam_nham_change
	   public instance (Boolean) nspam_nham_change (Integer $num_spam,
							Integer $num_ham)

	   Description: This method updates the number of spam and the number of ham in the
	   database.

       tok_touch
	   public instance (Boolean) tok_touch (String $token,
						Time $atime)

	   Description: This method updates the given tokens ($token) access time.

       tok_touch_all
	   public instance (Boolean) tok_touch_all (\@ $tokens,
						    Time $atime)

	   Description: This method does a mass update of the given list of tokens $tokens, if
	   the existing token atime is < $atime.

       cleanup
	   public instance (Boolean) cleanup ()

	   Description: This method performs any cleanup necessary before moving onto the next
	   operation.

       get_magic_re
	   public instance get_magic_re (String)

	   Description: This method returns a regexp which indicates a magic token.

       sync
	   public instance (Boolean) sync (\% $opts)

	   Description: This method performs a sync of the database.

       perform_upgrade
	   public instance (Boolean) perform_upgrade (\% $opts)

	   Description: This method is a utility method that performs any necessary upgrades
	   between versions.  It should know how to handle previous versions and what needs to
	   happen to upgrade them.

	   A true return value indicates success.

       clear_database
	   public instance (Boolean) clear_database ()

	   Description: This method deletes all records for a particular user.

	   Callers should be aware that any errors returned by this method could causes the
	   database to be inconsistent for the given user.

       backup_database
	   public instance (Boolean) backup_database ()

	   Description: This method will dump the users database in a machine readable format.

       restore_database
	   public instance (Boolean) restore_database (String $filename, Boolean $showdots)

	   Description: This method restores a database from the given filename, $filename.

	   Callers should be aware that any errors returned by this method could causes the
	   database to be inconsistent for the given user.

       db_readable
	   public instance (Boolean) db_readable ()

	   Description: This method returns whether or not the Bayes DB is available in a
	   readable state.

       db_writable
	   public instance (Boolean) db_writable ()

	   Description: This method returns whether or not the Bayes DB is available in a
	   writable state.

perl v5.16.3				    2011-06-06		Mail::SpamAssassin::BayesStore(3)
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