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<?php
namespace {
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Db
* @subpackage Table
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Abstract.php 23775 2011-03-01 17:25:24Z ralph $
*/
/**
* @category Zend
* @package Zend_Db
* @subpackage Table
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
abstract class Zend_Db_Table_Rowset_Abstract implements \SeekableIterator, \Countable, \ArrayAccess
{
/**
* The original data for each row.
*
* @var array
*/
protected $_data = array();
/**
* Zend_Db_Table_Abstract object.
*
* @var Zend_Db_Table_Abstract
*/
protected $_table;
/**
* Connected is true if we have a reference to a live
* Zend_Db_Table_Abstract object.
* This is false after the Rowset has been deserialized.
*
* @var boolean
*/
protected $_connected = \true;
/**
* Zend_Db_Table_Abstract class name.
*
* @var string
*/
protected $_tableClass;
/**
* Zend_Db_Table_Row_Abstract class name.
*
* @var string
*/
protected $_rowClass = 'Zend_Db_Table_Row';
/**
* Iterator pointer.
*
* @var integer
*/
protected $_pointer = 0;
/**
* How many data rows there are.
*
* @var integer
*/
protected $_count;
/**
* Collection of instantiated Zend_Db_Table_Row objects.
*
* @var array
*/
protected $_rows = array();
/**
* @var boolean
*/
protected $_stored = \false;
/**
* @var boolean
*/
protected $_readOnly = \false;
/**
* Constructor.
*
* @param array $config
*/
public function __construct(array $config)
{
if (isset($config['table'])) {
$this->_table = $config['table'];
$this->_tableClass = \get_class($this->_table);
}
if (isset($config['rowClass'])) {
$this->_rowClass = $config['rowClass'];
}
if (!\class_exists($this->_rowClass)) {
// require_once 'Zend/Loader.php';
\Zend_Loader::loadClass($this->_rowClass);
}
if (isset($config['data'])) {
$this->_data = $config['data'];
}
if (isset($config['readOnly'])) {
$this->_readOnly = $config['readOnly'];
}
if (isset($config['stored'])) {
$this->_stored = $config['stored'];
}
// set the count of rows
$this->_count = \count($this->_data);
$this->init();
}
/**
* Store data, class names, and state in serialized object
*
* @return array
*/
public function __sleep()
{
return array('_data', '_tableClass', '_rowClass', '_pointer', '_count', '_rows', '_stored', '_readOnly');
}
/**
* Setup to do on wakeup.
* A de-serialized Rowset should not be assumed to have access to a live
* database connection, so set _connected = false.
*
* @return void
*/
public function __wakeup()
{
$this->_connected = \false;
}
/**
* Initialize object
*
* Called from {@link __construct()} as final step of object instantiation.
*
* @return void
*/
public function init()
{
}
/**
* Return the connected state of the rowset.
*
* @return boolean
*/
public function isConnected()
{
return $this->_connected;
}
/**
* Returns the table object, or null if this is disconnected rowset
*
* @return Zend_Db_Table_Abstract
*/
public function getTable()
{
return $this->_table;
}
/**
* Set the table object, to re-establish a live connection
* to the database for a Rowset that has been de-serialized.
*
* @param Zend_Db_Table_Abstract $table
* @return boolean
* @throws Zend_Db_Table_Row_Exception
*/
public function setTable(\Zend_Db_Table_Abstract $table)
{
$this->_table = $table;
$this->_connected = \false;
// @todo This works only if we have iterated through
// the result set once to instantiate the rows.
foreach ($this as $row) {
$connected = $row->setTable($table);
if ($connected == \true) {
$this->_connected = \true;
}
}
return $this->_connected;
}
/**
* Query the class name of the Table object for which this
* Rowset was created.
*
* @return string
*/
public function getTableClass()
{
return $this->_tableClass;
}
/**
* Rewind the Iterator to the first element.
* Similar to the reset() function for arrays in PHP.
* Required by interface Iterator.
*
* @return Zend_Db_Table_Rowset_Abstract Fluent interface.
*/
public function rewind()
{
$this->_pointer = 0;
return $this;
}
/**
* Return the current element.
* Similar to the current() function for arrays in PHP
* Required by interface Iterator.
*
* @return Zend_Db_Table_Row_Abstract current element from the collection
*/
public function current()
{
if ($this->valid() === \false) {
return null;
}
// return the row object
return $this->_loadAndReturnRow($this->_pointer);
}
/**
* Return the identifying key of the current element.
* Similar to the key() function for arrays in PHP.
* Required by interface Iterator.
*
* @return int
*/
public function key()
{
return $this->_pointer;
}
/**
* Move forward to next element.
* Similar to the next() function for arrays in PHP.
* Required by interface Iterator.
*
* @return void
*/
public function next()
{
++$this->_pointer;
}
/**
* Check if there is a current element after calls to rewind() or next().
* Used to check if we've iterated to the end of the collection.
* Required by interface Iterator.
*
* @return bool False if there's nothing more to iterate over
*/
public function valid()
{
return $this->_pointer >= 0 && $this->_pointer < $this->_count;
}
/**
* Returns the number of elements in the collection.
*
* Implements Countable::count()
*
* @return int
*/
public function count()
{
return $this->_count;
}
/**
* Take the Iterator to position $position
* Required by interface SeekableIterator.
*
* @param int $position the position to seek to
* @return Zend_Db_Table_Rowset_Abstract
* @throws Zend_Db_Table_Rowset_Exception
*/
public function seek($position)
{
$position = (int) $position;
if ($position < 0 || $position >= $this->_count) {
// require_once 'Zend/Db/Table/Rowset/Exception.php';
throw new \Zend_Db_Table_Rowset_Exception("Illegal index {$position}");
}
$this->_pointer = $position;
return $this;
}
/**
* Check if an offset exists
* Required by the ArrayAccess implementation
*
* @param string $offset
* @return boolean
*/
public function offsetExists($offset)
{
return isset($this->_data[(int) $offset]);
}
/**
* Get the row for the given offset
* Required by the ArrayAccess implementation
*
* @param string $offset
* @return Zend_Db_Table_Row_Abstract
*/
public function offsetGet($offset)
{
$offset = (int) $offset;
if ($offset < 0 || $offset >= $this->_count) {
// require_once 'Zend/Db/Table/Rowset/Exception.php';
throw new \Zend_Db_Table_Rowset_Exception("Illegal index {$offset}");
}
$this->_pointer = $offset;
return $this->current();
}
/**
* Does nothing
* Required by the ArrayAccess implementation
*
* @param string $offset
* @param mixed $value
*/
public function offsetSet($offset, $value)
{
}
/**
* Does nothing
* Required by the ArrayAccess implementation
*
* @param string $offset
*/
public function offsetUnset($offset)
{
}
/**
* Returns a Zend_Db_Table_Row from a known position into the Iterator
*
* @param int $position the position of the row expected
* @param bool $seek wether or not seek the iterator to that position after
* @return Zend_Db_Table_Row
* @throws Zend_Db_Table_Rowset_Exception
*/
public function getRow($position, $seek = \false)
{
try {
$row = $this->_loadAndReturnRow($position);
} catch (\Zend_Db_Table_Rowset_Exception $e) {
// require_once 'Zend/Db/Table/Rowset/Exception.php';
throw new \Zend_Db_Table_Rowset_Exception('No row could be found at position ' . (int) $position, 0, $e);
}
if ($seek == \true) {
$this->seek($position);
}
return $row;
}
/**
* Returns all data as an array.
*
* Updates the $_data property with current row object values.
*
* @return array
*/
public function toArray()
{
// @todo This works only if we have iterated through
// the result set once to instantiate the rows.
foreach ($this->_rows as $i => $row) {
$this->_data[$i] = $row->toArray();
}
return $this->_data;
}
protected function _loadAndReturnRow($position)
{
if (!isset($this->_data[$position])) {
// require_once 'Zend/Db/Table/Rowset/Exception.php';
throw new \Zend_Db_Table_Rowset_Exception("Data for provided position does not exist");
}
// do we already have a row object for this position?
if (empty($this->_rows[$position])) {
$this->_rows[$position] = new $this->_rowClass(array('table' => $this->_table, 'data' => $this->_data[$position], 'stored' => $this->_stored, 'readOnly' => $this->_readOnly));
}
// return the row object
return $this->_rows[$position];
}
}
}