547 lines
14 KiB
PHP
547 lines
14 KiB
PHP
<?php
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/**
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* Prototype Castable Object.. for DataObject queries
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*
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* Storage for Data that may be cast into a variety of formats.
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This source file is subject to version 3.0 of the PHP license
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* that is available through the world-wide-web at the following URI:
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* http://www.php.net/license/3_0.txt. If you did not receive a copy of
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* the PHP License and are unable to obtain it through the web, please
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* send a note to license@php.net so we can mail you a copy immediately.
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*
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* @category Database
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* @package DB_DataObject
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* @author Alan Knowles <alan@akbkhome.com>
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* @copyright 1997-2006 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0
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* @version CVS: $Id: Cast.php,v 1.15 2005/07/07 05:30:53 alan_k Exp $
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* @link http://pear.php.net/package/DB_DataObject
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*/
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/**
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*
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* Common usages:
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* // blobs
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* $data = DB_DataObject_Cast::blob($somefile);
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* $data = DB_DataObject_Cast::string($somefile);
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* $dataObject->someblobfield = $data
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*
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* // dates?
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* $d1 = new DB_DataObject_Cast::date('12/12/2000');
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* $d2 = new DB_DataObject_Cast::date(2000,12,30);
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* $d3 = new DB_DataObject_Cast::date($d1->year, $d1->month+30, $d1->day+30);
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*
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* // time, datetime.. ?????????
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*
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* // raw sql????
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* $data = DB_DataObject_Cast::sql('cast("123123",datetime)');
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* $data = DB_DataObject_Cast::sql('NULL');
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*
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* // int's/string etc. are proably pretty pointless..!!!!
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*
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*
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* inside DB_DataObject,
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* if (is_a($v,'db_dataobject_class')) {
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* $value .= $v->toString(DB_DATAOBJECT_INT,'mysql');
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* }
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*
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*
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*
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*
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*/
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class DB_DataObject_Cast {
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/**
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* Type of data Stored in the object..
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*
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* @var string (date|blob|.....?)
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* @access public
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*/
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var $type;
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/**
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* Data For date representation
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*
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* @var int day/month/year
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* @access public
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*/
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var $day;
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var $month;
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var $year;
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/**
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* Generic Data..
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*
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* @var string
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* @access public
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*/
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var $value;
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/**
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* Blob consructor
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*
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* create a Cast object from some raw data.. (binary)
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*
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*
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* @param string (with binary data!)
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*
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* @return object DB_DataObject_Cast
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* @access public
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*/
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function blob($value) {
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$r = new DB_DataObject_Cast;
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$r->type = 'blob';
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$r->value = $value;
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return $r;
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}
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/**
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* String consructor (actually use if for ints and everything else!!!
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*
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* create a Cast object from some string (not binary)
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*
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*
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* @param string (with binary data!)
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*
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* @return object DB_DataObject_Cast
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* @access public
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*/
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function string($value) {
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$r = new DB_DataObject_Cast;
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$r->type = 'string';
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$r->value = $value;
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return $r;
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}
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/**
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* SQL constructor (for raw SQL insert)
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*
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* create a Cast object from some sql
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*
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* @param string (with binary data!)
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*
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* @return object DB_DataObject_Cast
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* @access public
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*/
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function sql($value)
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{
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$r = new DB_DataObject_Cast;
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$r->type = 'sql';
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$r->value = $value;
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return $r;
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}
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/**
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* Date Constructor
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*
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* create a Cast object from some string (not binary)
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* NO VALIDATION DONE, although some crappy re-calcing done!
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*
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* @param vargs... accepts
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* dd/mm
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* dd/mm/yyyy
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* yyyy-mm
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* yyyy-mm-dd
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* array(yyyy,dd)
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* array(yyyy,dd,mm)
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*
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*
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*
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* @return object DB_DataObject_Cast
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* @access public
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*/
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function date()
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{
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$args = func_get_args();
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switch(count($args)) {
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case 0: // no args = today!
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$bits = explode('-',date('Y-m-d'));
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break;
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case 1: // one arg = a string
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if (strpos($args[0],'/') !== false) {
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$bits = array_reverse(explode('/',$args[0]));
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} else {
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$bits = explode('-',$args[0]);
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}
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break;
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default: // 2 or more..
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$bits = $args;
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}
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if (count($bits) == 1) { // if YYYY set day = 1st..
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$bits[] = 1;
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}
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if (count($bits) == 2) { // if YYYY-DD set day = 1st..
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$bits[] = 1;
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}
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// if year < 1970 we cant use system tools to check it...
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// so we make a few best gueses....
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// basically do date calculations for the year 2000!!!
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// fix me if anyone has more time...
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if (($bits[0] < 1975) || ($bits[0] > 2030)) {
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$oldyear = $bits[0];
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$bits = explode('-',date('Y-m-d',mktime(1,1,1,$bits[1],$bits[2],2000)));
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$bits[0] = ($bits[0] - 2000) + $oldyear;
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} else {
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// now mktime
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$bits = explode('-',date('Y-m-d',mktime(1,1,1,$bits[1],$bits[2],$bits[0])));
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}
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$r = new DB_DataObject_Cast;
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$r->type = 'date';
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list($r->year,$r->month,$r->day) = $bits;
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return $r;
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}
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/**
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* Data For time representation ** does not handle timezones!!
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*
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* @var int hour/minute/second
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* @access public
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*/
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var $hour;
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var $minute;
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var $second;
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/**
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* DateTime Constructor
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*
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* create a Cast object from a Date/Time
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* Maybe should accept a Date object.!
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* NO VALIDATION DONE, although some crappy re-calcing done!
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*
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* @param vargs... accepts
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* noargs (now)
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* yyyy-mm-dd HH:MM:SS (Iso)
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* array(yyyy,mm,dd,HH,MM,SS)
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*
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*
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* @return object DB_DataObject_Cast
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* @access public
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* @author therion 5 at hotmail
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*/
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function dateTime()
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{
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$args = func_get_args();
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switch(count($args)) {
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case 0: // no args = now!
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$datetime = date('Y-m-d G:i:s', mktime());
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case 1:
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// continue on from 0 args.
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if (!isset($datetime)) {
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$datetime = $args[0];
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}
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$parts = explode(' ', $datetime);
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$bits = explode('-', $parts[0]);
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$bits = array_merge($bits, explode(':', $parts[1]));
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break;
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default: // 2 or more..
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$bits = $args;
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}
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if (count($bits) != 6) {
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// PEAR ERROR?
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return false;
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}
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$r = DB_DataObject_Cast::date($bits[0], $bits[1], $bits[2]);
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if (!$r) {
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return $r; // pass thru error (False) - doesnt happen at present!
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}
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// change the type!
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$r->type = 'datetime';
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// should we mathematically sort this out..
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// (or just assume that no-one's dumb enough to enter 26:90:90 as a time!
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$r->hour = $bits[3];
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$r->minute = $bits[4];
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$r->second = $bits[5];
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return $r;
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}
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/**
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* time Constructor
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*
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* create a Cast object from a Date/Time
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* Maybe should accept a Date object.!
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* NO VALIDATION DONE, and no-recalcing done!
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*
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* @param vargs... accepts
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* noargs (now)
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* HH:MM:SS (Iso)
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* array(HH,MM,SS)
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*
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*
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* @return object DB_DataObject_Cast
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* @access public
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* @author therion 5 at hotmail
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*/
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function time()
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{
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$args = func_get_args();
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switch (count($args)) {
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case 0: // no args = now!
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$time = date('G:i:s', mktime());
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case 1:
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// continue on from 0 args.
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if (!isset($time)) {
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$time = $args[0];
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}
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$bits = explode(':', $time);
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break;
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default: // 2 or more..
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$bits = $args;
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}
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if (count($bits) != 3) {
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return false;
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}
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// now take data from bits into object fields
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$r = new DB_DataObject_Cast;
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$r->type = 'time';
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$r->hour = $bits[0];
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$r->minute = $bits[1];
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$r->second = $bits[2];
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return $r;
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}
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/**
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* get the string to use in the SQL statement for this...
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*
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*
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* @param int $to Type (DB_DATAOBJECT_*
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* @param object $db DB Connection Object
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*
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*
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* @return string
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* @access public
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*/
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function toString($to=false,$db)
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{
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// if $this->type is not set, we are in serious trouble!!!!
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// values for to:
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$method = 'toStringFrom'.$this->type;
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return $this->$method($to,$db);
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}
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/**
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* get the string to use in the SQL statement from a blob of binary data
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* ** Suppots only blob->postgres::bytea
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*
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* @param int $to Type (DB_DATAOBJECT_*
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* @param object $db DB Connection Object
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*
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*
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* @return string
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* @access public
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*/
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function toStringFromBlob($to,$db)
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{
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// first weed out invalid casts..
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// in blobs can only be cast to blobs.!
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// perhaps we should support TEXT fields???
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if (!($to & DB_DATAOBJECT_BLOB)) {
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return PEAR::raiseError('Invalid Cast from a DB_DataObject_Cast::blob to something other than a blob!');
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}
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switch ($db->dsn["phptype"]) {
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case 'pgsql':
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return "'".pg_escape_bytea($this->value)."'::bytea";
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case 'mysql':
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return "'".mysql_real_escape_string($this->value,$db->connection)."'";
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case 'mysqli':
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// this is funny - the parameter order is reversed ;)
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return "'".mysqli_real_escape_string($db->connection, $this->value)."'";
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default:
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return PEAR::raiseError("DB_DataObject_Cast cant handle blobs for Database:{$db->dsn['phptype']} Yet");
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}
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}
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/**
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* get the string to use in the SQL statement for a blob from a string!
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* ** Suppots only string->postgres::bytea
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*
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*
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* @param int $to Type (DB_DATAOBJECT_*
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* @param object $db DB Connection Object
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*
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*
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* @return string
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* @access public
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*/
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function toStringFromString($to,$db)
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{
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// first weed out invalid casts..
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// in blobs can only be cast to blobs.!
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// perhaps we should support TEXT fields???
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//
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if (!($to & DB_DATAOBJECT_BLOB)) {
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return PEAR::raiseError('Invalid Cast from a DB_DataObject_Cast::string to something other than a blob!'.
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' (why not just use native features)');
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}
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switch ($db->dsn['phptype']) {
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case 'pgsql':
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return "'".pg_escape_string($this->value)."'::bytea";
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case 'mysql':
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return "'".mysql_real_escape_string($this->value,$db->connection)."'";
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case 'mysqli':
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return "'".mysqli_real_escape_string($db->connection, $this->value)."'";
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default:
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return PEAR::raiseError("DB_DataObject_Cast cant handle blobs for Database:{$db->dsn['phptype']} Yet");
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}
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}
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/**
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* get the string to use in the SQL statement for a date
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*
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*
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*
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* @param int $to Type (DB_DATAOBJECT_*
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* @param object $db DB Connection Object
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*
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*
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* @return string
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* @access public
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*/
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function toStringFromDate($to,$db)
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{
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// first weed out invalid casts..
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// in blobs can only be cast to blobs.!
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// perhaps we should support TEXT fields???
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//
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if (($to !== false) && !($to & DB_DATAOBJECT_DATE)) {
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return PEAR::raiseError('Invalid Cast from a DB_DataObject_Cast::string to something other than a date!'.
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' (why not just use native features)');
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}
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return "'{$this->year}-{$this->month}-{$this->day}'";
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}
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/**
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* get the string to use in the SQL statement for a datetime
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*
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*
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*
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* @param int $to Type (DB_DATAOBJECT_*
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* @param object $db DB Connection Object
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*
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*
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* @return string
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* @access public
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* @author therion 5 at hotmail
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*/
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function toStringFromDateTime($to,$db)
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{
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// first weed out invalid casts..
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// in blobs can only be cast to blobs.!
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// perhaps we should support TEXT fields???
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if (($to !== false) &&
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!($to & (DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME))) {
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return PEAR::raiseError('Invalid Cast from a ' .
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' DB_DataObject_Cast::dateTime to something other than a datetime!' .
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' (try using native features)');
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}
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return "'{$this->year}-{$this->month}-{$this->day} {$this->hour}:{$this->minute}:{$this->second}'";
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}
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/**
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* get the string to use in the SQL statement for a time
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*
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*
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*
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* @param int $to Type (DB_DATAOBJECT_*
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* @param object $db DB Connection Object
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*
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*
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* @return string
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* @access public
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* @author therion 5 at hotmail
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*/
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function toStringFromTime($to,$db)
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{
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// first weed out invalid casts..
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// in blobs can only be cast to blobs.!
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// perhaps we should support TEXT fields???
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if (($to !== false) && !($to & DB_DATAOBJECT_TIME)) {
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return PEAR::raiseError('Invalid Cast from a' .
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' DB_DataObject_Cast::time to something other than a time!'.
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' (try using native features)');
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}
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return "'{$this->hour}:{$this->minute}:{$this->second}'";
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}
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/**
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* get the string to use in the SQL statement for a raw sql statement.
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*
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* @param int $to Type (DB_DATAOBJECT_*
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* @param object $db DB Connection Object
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*
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*
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* @return string
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* @access public
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*/
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function toStringFromSql($to,$db)
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{
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return $this->value;
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}
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}
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