Mail::SpamAssassin::BayesStore::PgSQL
Mail::SpamAssassin::BayesStore::PgSQL
NAMESYNOPSIS
DESCRIPTION
METHODS
Private Methods
NAME
Mail::SpamAssassin::BayesStore::PgSQL − PostgreSQL Specific Bayesian Storage Module Implementation
SYNOPSIS
DESCRIPTION
This module implements a PostgreSQL specific bayesian storage module.
It subclasses Mail::SpamAssassin::BayesStore::SQL and overrides any methods which makes SQL calls involving the token column. Since PostgreSQL uses BYTEA for the token column type you must make sure that the DBD driver does the proper quoting. You can accomplish this by binding the token column to a specific type.
METHODS
token_expiration
public instance (Integer, Integer,
Integer, Integer) token_expiration(\% $opts,
Integer $newdelta,
@ @vars)
Description: This method performs the database specific expiration of tokens based on the passed in $newdelta and @vars.
seen_put
public (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 the database.
set_last_expire
public instance (Boolean) set_last_expire (Integer
$time)
Description: This method sets the last expire time.
set_running_expire_tok
public instance (String $time)
set_running_expire_tok ()
Description: This method sets the time that an expire starts running.
remove_running_expire_tok
public instance (Boolean) remove_running_expire_tok ()
Description: This method removes the row in the database that indicates that and expire is currently running.
tok_get
public instance (Integer, Integer, Integer) tok_get (String
$token)
Description: This method retrieves a specificed token ($token) from the database and returns it’s spam_count, ham_count and last access time.
tok_get_all
public instance (\@) tok_get (@ $tokens)
Description: This method retrieves the specified tokens ($tokens) from storage and returns an array ref of arrays spam count, ham acount and last access time.
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,
String $atime)
Description: This method updates the given tokens ($token) atime.
The assumption is that the token already exists in the database.
tok_touch_all
public instance (Boolean) tok_touch (\@ $tokens
String $atime)
Description: This method does a mass update of the given list of tokens $tokens, if the existing token atime is < $atime.
The assumption is that the tokens already exist in the database.
We should never be touching more than N_SIGNIFICANT_TOKENS, so we can make some assumptions about how to handle the data (ie no need to batch like we do in tok_get_all)
cleanup
public instance (Boolean) cleanup ()
Description: This method perfoms any cleanup necessary before moving onto the next operation.
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.
Private Methods
_connect_db
private instance (Boolean) _connect_db ()
Description: This method connects to the SQL database.
_put_token
private instance (Boolean) _put_token (string
$token,
integer $spam_count,
integer $ham_count, string $atime)
Description: This method performs the work of either inserting or updating a token in the database.
_put_tokens
private instance (Boolean) _put_tokens (\% $token,
integer $spam_count,
integer $ham_count, string $atime)
Description: This method performs the work of either inserting or updating tokens in the database.
_token_select_string
private instance (String) _token_select_string
Description: This method returns the string to be used in SELECT statements to represent the token column.
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
