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XAMPP 1.4.14
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xampp-win32-1.4.14-installer.exe
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php
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pear
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DB
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QueryTool
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Result.php
< prev
Wrap
PHP Script
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2004-10-01
|
6KB
|
251 lines
<?php
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 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. |
// +----------------------------------------------------------------------+
// | Author: Wolfram Kriesing, Paolo Panto, vision:produktion <wk@visionp.de>
// +----------------------------------------------------------------------+
//
// $Id: Result.php,v 1.7 2004/04/27 23:36:38 quipo Exp $
//
/**
* this result actually contains the 'data' itself, the number of rows
* returned and some additional info
* using ZE2 you can also get retreive data from the result doing the following:
* <vp_DB_Common-instance>->getAll()->getCount()
* or
* <vp_DB_Common-instance>->getAll()->getData()
*
*
* @package DB_QueryTool
* @version 2002/07/11
* @access public
* @author Wolfram Kriesing <wolfram@kriesing.de>
*/
class DB_QueryTool_Result
{
// {{{ class vars
/**
* @var array
*/
var $_data = array();
/**
* @var array
*/
var $_dataKeys = array();
/**
* @var integer
*/
var $_count = 0;
/**
* the counter for the methods getFirst, getNext
* @var array
*/
var $_counter = null;
// }}}
// {{{ DB_QueryTool_Result()
/**
* create a new instance of result with the data returned by the query
*
* @version 2002/07/11
* @access public
* @author Wolfram Kriesing <wolfram@kriesing.de>
* @param array the data returned by the result
*/
function DB_QueryTool_Result($data)
{
if (!count($data)) {
$this->_count = 0;
} else {
list($firstElement) = $data;
if (is_array($firstElement)) { // is the array a collection of rows?
$this->_count = sizeof($data);
} else {
if (sizeof($data) > 0) {
$this->_count = 1;
} else {
$this->_count = 0;
}
}
}
$this->_data = $data;
}
// }}}
// {{{ numRows
/**
* return the number of rows returned. This is an alias for getCount().
*
* @access public
* @return integer
*/
function numRows()
{
return $this->_count;
}
// }}}
// {{{ getCount()
/**
* return the number of rows returned
*
* @version 2002/07/11
* @access public
* @author Wolfram Kriesing <wolfram@kriesing.de>
* @return integer the number of rows returned
*/
function getCount()
{
return $this->_count;
}
// }}}
// {{{ getData()
/**
* get all the data returned
*
* @version 2002/07/11
* @access public
* @author Wolfram Kriesing <wolfram@kriesing.de>
* @param string $key
* @return mixed array or PEAR_Error
*/
function getData($key=null)
{
if (is_null($key)) {
return $this->_data;
}
if ($this->_data[$key]) {
return $this->_data[$key];
}
return new PEAR_Error("there is no element with the key '$key'!");
}
// }}}
// {{{ getFirst()
/**
* get the first result set
* we are not using next, current, and reset, since those ignore keys
* which are empty or 0
*
* @version 2002/07/11
* @access public
* @author Wolfram Kriesing <wolfram@kriesing.de>
* @return mixed
*/
function getFirst()
{
if ($this->getCount() > 0) {
$this->_dataKeys = array_keys($this->_data);
$this->_counter = 0;
return $this->_data[$this->_dataKeys[$this->_counter]];
}
return new PEAR_Error('There are no elements!');
}
// }}}
// {{{ getNext()
/**
* Get next result set. If getFirst() has never been called before,
* it calls that method.
* @return mixed
* @access public
*/
function getNext()
{
if (!$this->initDone()) {
return $this->getFirst();
}
if ($this->hasMore()) {
$this->_counter++;
return $this->_data[$this->_dataKeys[$this->_counter]];
}
return new PEAR_Error('there are no more elements!');
}
// }}}
// {{{ hasMore()
/**
* check if there are other rows
*
* @return boolean
* @access public
*/
function hasMore()
{
if ($this->_counter+1 < $this->getCount()) {
return true;
}
return false;
}
// }}}
// {{{ fetchRow
/**
* This function emulates PEAR::DB fetchRow() method.
* With this method, DB_QueryTool can transparently replace PEAR_DB
*
* @todo implement fetchmode support?
* @access public
* @return void
*/
function fetchRow()
{
if ($this->hasMore()) {
$arr = $this->getNext();
if (!PEAR::isError($arr)) {
return $arr;
}
}
return false;
}
// }}}
// {{{ initDone
/**
* Helper method. Check if $this->_dataKeys has been initialized
*
* @return boolean
* @access private
*/
function initDone()
{
return (
isset($this->_dataKeys) &&
is_array($this->_dataKeys) &&
count($this->_dataKeys)
);
}
// }}}
#TODO
#function getPrevious()
#function getLast()
}
?>