cacheobj.php

<?php
/**
 * Cache class file, to handle the caching of remote data
 * 
 * Base cache superclass to do the cache babymaking.
 * @author   Thomas Martin <tenach@whube.com>
 * @version  1.0
 * @license: AGPLv3
 */

if ( ! class_exists ( "cacheobj" ) ) {

$model_root = dirname(  __FILE__ ) . "/";

if ( ! class_exists( "sql" ) ) {
	// last ditch...
	include( $model_root . "sql.php" );
}

include( $model_root . "../conf/sql.php" );
include( $model_root . "events.php" );

class cacheobj {
	var $sql;
	var $table;
	var $pk_field;
	
  function cacheobj( $table, $c_field ) {
		global $TABLE_PREFIX;
		$this->table     = $TABLE_PREFIX.$table;
		$this->c_field  = $c_field;
		$this->sql       = new sql();
	}
	
	function checkAge( $ID, $minutes = '' ) {
		$minute = 60;
		$ttl = $minute * $minutes;
		$curTime = time();
		$this->getAllByID( $ID );
		$cachePull = $this->sql->getNextRow();
		$refTime = clean( $cachePull["timestamp"] );
		$content = clean( $cachePull["cached_contents"] );
		$timeDifference = $curTime - $refTime;
		$ret = $ttl - $timeDifference;
		return $ret;
	}
	
	function updateStamp( $ID ) {
		$this->sql->query( "UPDATE " . $this->table . " SET timestamp=" . time() . " WHERE " . $this->c_field . "='" . $ID . "' ;" );
	}

	function updateCached( $ID, $contents ) {
		$this->sql->query( "UPDATE " . $this->table . " SET cached_contents='" . clean ( $contents ) . "' WHERE " . $this->c_field . "='" . $ID . "' ;" );
	}
	
	function getAllByID( $ID ) {
		$this->sql->query( "SELECT * FROM " . $this->table . " WHERE " . $this->c_field . " = '" . $ID . "';" );
	}
}

}
?>