interface/modules/zend_modules/library/Zend/Db/Adapter/Driver/IbmDb2/Result.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Db\Adapter\Driver\IbmDb2;
  11
  12 use Zend\Db\Adapter\Driver\ResultInterface;
  13 use Zend\Db\Adapter\Exception;
  14
  15 class Result implements ResultInterface
  16 {
  17     /**
  18      * @var resource
  19      */
  20     protected $resource;
  21
  22     /**
  23      * @var int
  24      */
  25     protected $position = 0;
  26
  27     /**
  28      * @var bool
  29      */
  30     protected $currentComplete = false;
  31
  32     /**
  33      * @var mixed
  34      */
  35     protected $currentData = null;
  36
  37     /**
  38      * @var mixed
  39      */
  40     protected $generatedValue = null;
  41
  42     /**
  43      * @param  resource $resource
  44      * @param  mixed $generatedValue
  45      * @return Result
  46      */
  47     public function initialize($resource, $generatedValue = null)
  48     {
  49         $this->resource = $resource;
  50         $this->generatedValue = $generatedValue;
  51         return $this;
  52     }
  53
  54     /**
  55      * (PHP 5 &gt;= 5.0.0)<br/>
  56      * Return the current element
  57      * @link http://php.net/manual/en/iterator.current.php
  58      * @return mixed Can return any type.
  59      */
  60     public function current()
  61     {
  62         if ($this->currentComplete) {
  63             return $this->currentData;
  64         }
  65
  66         $this->currentData = db2_fetch_assoc($this->resource);
  67         return $this->currentData;
  68     }
  69
  70     /**
  71      * @return mixed
  72      */
  73     public function next()
  74     {
  75         $this->currentData = db2_fetch_assoc($this->resource);
  76         $this->currentComplete = true;
  77         $this->position++;
  78         return $this->currentData;
  79     }
  80
  81     /**
  82      * @return int|string
  83      */
  84     public function key()
  85     {
  86         return $this->position;
  87     }
  88
  89     /**
  90      * @return bool
  91      */
  92     public function valid()
  93     {
  94         return ($this->currentData !== false);
  95     }
  96
  97     /**
  98      * (PHP 5 &gt;= 5.0.0)<br/>
  99      * Rewind the Iterator to the first element
 100      * @link http://php.net/manual/en/iterator.rewind.php
 101      * @return void Any returned value is ignored.
 102      */
 103     public function rewind()
 104     {
 105         if ($this->position > 0) {
 106             throw new Exception\RuntimeException(
 107                 'This result is a forward only result set, calling rewind() after moving forward is not supported'
 108             );
 109         }
 110         $this->currentData = db2_fetch_assoc($this->resource);
 111         $this->currentComplete = true;
 112         $this->position = 1;
 113     }
 114
 115     /**
 116      * Force buffering
 117      *
 118      * @return void
 119      */
 120     public function buffer()
 121     {
 122         return null;
 123     }
 124
 125     /**
 126      * Check if is buffered
 127      *
 128      * @return bool|null
 129      */
 130     public function isBuffered()
 131     {
 132         return false;
 133     }
 134
 135     /**
 136      * Is query result?
 137      *
 138      * @return bool
 139      */
 140     public function isQueryResult()
 141     {
 142         return (db2_num_fields($this->resource) > 0);
 143     }
 144
 145     /**
 146      * Get affected rows
 147      *
 148      * @return int
 149      */
 150     public function getAffectedRows()
 151     {
 152         return db2_num_rows($this->resource);
 153     }
 154
 155     /**
 156      * Get generated value
 157      *
 158      * @return mixed|null
 159      */
 160     public function getGeneratedValue()
 161     {
 162         return $this->generatedValue;
 163     }
 164
 165     /**
 166      * Get the resource
 167      *
 168      * @return mixed
 169      */
 170     public function getResource()
 171     {
 172         return $this->resource;
 173     }
 174
 175     /**
 176      * Get field count
 177      *
 178      * @return int
 179      */
 180     public function getFieldCount()
 181     {
 182         return db2_num_fields($this->resource);
 183     }
 184
 185     /**
 186      * @return null|int
 187      */
 188     public function count()
 189     {
 190         return null;
 191     }
 192 }