home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Personal Computer World 2005 October
/
PCWOCT05.iso
/
Software
/
FromTheMag
/
XAMPP 1.4.14
/
xampp-win32-1.4.14-installer.exe
/
xampp
/
php
/
pear
/
DB
/
DataObject
/
Cast.php
next >
Wrap
PHP Script
|
2004-10-01
|
9KB
|
341 lines
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Alan Knowles <alan@akbkhome.com> |
// +----------------------------------------------------------------------+
//
// $Id: Cast.php,v 1.6 2004/06/05 02:32:34 alan_k Exp $
//
// Prototype Castable Object.. for DataObject queries
//
/**
*
* @abstract Storage for Data that may be cast into a variety of formats.
*
* Common usages:
* // blobs
* $data = DB_DataObject_Cast::blob($somefile);
* $data = DB_DataObject_Cast::string($somefile);
* $dataObject->someblobfield = $data
*
* // dates?
* $d1 = new DB_DataObject_Cast::date('12/12/2000');
* $d2 = new DB_DataObject_Cast::date(2000,12,30);
* $d3 = new DB_DataObject_Cast::date($d1->year, $d1->month+30, $d1->day+30);
*
* // time, datetime.. ?????????
*
* // raw sql????
* $data = DB_DataObject_Cast::sql('cast("123123",datetime)');
* $data = DB_DataObject_Cast::sql('NULL');
*
* // int's/string etc. are proably pretty pointless..!!!!
*
*
* inside DB_DataObject,
* if (is_a($v,'db_dataobject_class')) {
* $value .= $v->toString(DB_DATAOBJECT_INT,'mysql');
* }
*
*
*
*
* @version $Id: Cast.php,v 1.6 2004/06/05 02:32:34 alan_k Exp $
*/
class DB_DataObject_Cast {
/**
* Type of data Stored in the object..
*
* @var string (date|blob|.....?)
* @access public
*/
var $type;
/**
* Data For date representation
*
* @var int day/month/year
* @access public
*/
var $day;
var $month;
var $year;
/**
* Generic Data..
*
* @var string
* @access public
*/
var $value;
/**
* Blob consructor
*
* create a Cast object from some raw data.. (binary)
*
*
* @param string (with binary data!)
*
* @return object DB_DataObject_Cast
* @access public
*/
function blob($value) {
$r = new DB_DataObject_Cast;
$r->type = 'blob';
$r->value = $value;
return $r;
}
/**
* String consructor (actually use if for ints and everything else!!!
*
* create a Cast object from some string (not binary)
*
*
* @param string (with binary data!)
*
* @return object DB_DataObject_Cast
* @access public
*/
function string($value) {
$r = new DB_DataObject_Cast;
$r->type = 'string';
$r->value = $value;
return $r;
}
/**
* SQL constructor (for raw SQL insert)
*
* create a Cast object from some sql
*
* @param string (with binary data!)
*
* @return object DB_DataObject_Cast
* @access public
*/
function sql($value) {
$r = new DB_DataObject_Cast;
$r->type = 'sql';
$r->value = $value;
return $r;
}
/**
* Date Constructor
*
* create a Cast object from some string (not binary)
*
*
* @param vargs... accepts
* dd/mm
* dd/mm/yyyy
* yyyy-mm
* yyyy-mm-dd
* array(yyyy,dd)
* array(yyyy,dd,mm)
*
*
*
* @return object DB_DataObject_Cast
* @access public
*/
function date() {
$args = func_get_args();
switch(count($args)) {
case 0: // no args = today!
$bits = explode('-',date('Y-m-d'));
break;
case 1: // one arg = a string
if (strpos($args[0],'/') !== false) {
$bits = array_reverse(explode('/',$args[0]));
} else {
$bits = explode('-',$args[0]);
}
default: // 2 or more..
$bits = $args;
}
if (count($bits) == 1) { // if YYYY set day = 1st..
$bits[] = 1;
}
if (count($bits) == 2) { // if YYYY-DD set day = 1st..
$bits[] = 1;
}
// if year < 1970 we cant use system tools to check it...
// so we make a few best gueses....
// basically do date calculations for the year 2000!!!
// fix me if anyone has more time...
if (($bits[0] < 1975) || ($bits[0] > 2030)) {
$oldyear = $bits[0];
$bits = explode('-',date('Y-m-d',mktime(1,1,1,$bits[1],$bits[2],2000)));
$bits[0] = ($bits[0] - 2000) + $oldyear;
} else {
// now mktime
$bits = explode('-',date('Y-m-d',mktime(1,1,1,$bits[1],$bits[2],$bits[0])));
}
$r = new DB_DataObject_Cast;
$r->type = 'date';
list($r->year,$r->month,$r->day) = $bits;
return $r;
}
/**
* get the string to use in the SQL statement for this...
*
*
* @param int $to Type (DB_DATAOBJECT_*
* @param string $db (eg. mysql|mssql.....)
*
*
* @return string
* @access public
*/
function toString($to=false,$db='mysql') {
// if $this->type is not set, we are in serious trouble!!!!
// values for to:
$method = 'toStringFrom'.$this->type;
return $this->$method($to,$db);
}
/**
* get the string to use in the SQL statement from a blob of binary data
* ** Suppots only blob->postgres::bytea
*
* @param int $to Type (DB_DATAOBJECT_*
* @param string $db (eg. mysql|mssql.....)
*
*
* @return string
* @access public
*/
function toStringFromBlob($to,$db) {
// first weed out invalid casts..
// in blobs can only be cast to blobs.!
// perhaps we should support TEXT fields???
if (!($to & DB_DATAOBJECT_BLOB)) {
return PEAR::raiseError('Invalid Cast from a DB_DataObject_Cast::blob to something other than a blob!');
}
switch ($db) {
case 'pgsql':
return "'".pg_escape_bytea($this->value)."'::bytea";
default:
return PEAR::raiseError("DB_DataObject_Cast cant handle blobs for Database:$db Yet");
}
}
/**
* get the string to use in the SQL statement for a blob from a string!
* ** Suppots only string->postgres::bytea
*
*
* @param int $to Type (DB_DATAOBJECT_*
* @param string $db (eg. mysql|mssql.....)
*
*
* @return string
* @access public
*/
function toStringFromString($to,$db) {
// first weed out invalid casts..
// in blobs can only be cast to blobs.!
// perhaps we should support TEXT fields???
//
if (!($to & DB_DATAOBJECT_BLOB)) {
return PEAR::raiseError('Invalid Cast from a DB_DataObject_Cast::string to something other than a blob!'.
' (why not just use native features)');
}
switch ($db) {
case 'pgsql':
return "'".pg_escape_string($this->value)."'::bytea";
default:
return PEAR::raiseError("DB_DataObject_Cast cant handle blobs for Database:$db Yet");
}
}
/**
* get the string to use in the SQL statement for a date
*
*
*
* @param int $to Type (DB_DATAOBJECT_*
* @param string $db (eg. mysql|mssql.....)
*
*
* @return string
* @access public
*/
function toStringFromDate($to,$db) {
// first weed out invalid casts..
// in blobs can only be cast to blobs.!
// perhaps we should support TEXT fields???
//
if (($to !== false) && !($to & DB_DATAOBJECT_DATE)) {
return PEAR::raiseError('Invalid Cast from a DB_DataObject_Cast::string to something other than a date!'.
' (why not just use native features)');
}
return "'{$this->year}-{$this->month}-{$this->day}'";
}
/**
* get the string to use in the SQL statement for a raw sql statement.
*
* @param int $to Type (DB_DATAOBJECT_*
* @param string $db (eg. mysql|mssql.....)
*
*
* @return string
* @access public
*/
function toStringFromSql($to,$db) {
return $this->value;
}
}