interface/modules/zend_modules/library/Zend/Db/Adapter/Driver/Pgsql/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\Pgsql;
  11
  12 use Zend\Db\Adapter\Driver\ResultInterface;
  13 use Zend\Db\Adapter\Exception;
  14
  15 class Result implements ResultInterface
  16 {
  17
  18     /**
  19      * @var resource
  20      */
  21     protected $resource = null;
  22
  23     /**
  24      * @var int
  25      */
  26     protected $position = 0;
  27
  28     /**
  29      * @var int
  30      */
  31     protected $count = 0;
  32
  33     /**
  34      * @var null|mixed
  35      */
  36     protected $generatedValue = null;
  37
  38     /**
  39      * Initialize
  40      *
  41      * @param $resource
  42      * @param $generatedValue
  43      * @return void
  44      * @throws Exception\InvalidArgumentException
  45      */
  46     public function initialize($resource, $generatedValue)
  47     {
  48         if (!is_resource($resource) || get_resource_type($resource) != 'pgsql result') {
  49             throw new Exception\InvalidArgumentException('Resource not of the correct type.');
  50         }
  51
  52         $this->resource = $resource;
  53         $this->count = pg_num_rows($this->resource);
  54         $this->generatedValue = $generatedValue;
  55     }
  56
  57     /**
  58      * Current
  59      *
  60      * @return array|bool|mixed
  61      */
  62     public function current()
  63     {
  64         if ($this->count === 0) {
  65             return false;
  66         }
  67         return pg_fetch_assoc($this->resource, $this->position);
  68     }
  69
  70     /**
  71      * Next
  72      *
  73      * @return void
  74      */
  75     public function next()
  76     {
  77         $this->position++;
  78     }
  79
  80     /**
  81      * Key
  82      *
  83      * @return int|mixed
  84      */
  85     public function key()
  86     {
  87         return $this->position;
  88     }
  89
  90     /**
  91      * Valid
  92      *
  93      * @return bool
  94      */
  95     public function valid()
  96     {
  97         return ($this->position < $this->count);
  98     }
  99
 100     /**
 101      * Rewind
 102      *
 103      * @return void
 104      */
 105     public function rewind()
 106     {
 107         $this->position = 0;
 108     }
 109
 110     /**
 111      * Buffer
 112      *
 113      * @return null
 114      */
 115     public function buffer()
 116     {
 117         return null;
 118     }
 119
 120     /**
 121      * Is buffered
 122      *
 123      * @return false
 124      */
 125     public function isBuffered()
 126     {
 127         return false;
 128     }
 129
 130     /**
 131      * Is query result
 132      *
 133      * @return bool
 134      */
 135     public function isQueryResult()
 136     {
 137         return (pg_num_fields($this->resource) > 0);
 138     }
 139
 140     /**
 141      * Get affected rows
 142      *
 143      * @return int
 144      */
 145     public function getAffectedRows()
 146     {
 147         return pg_affected_rows($this->resource);
 148     }
 149
 150     /**
 151      * Get generated value
 152      *
 153      * @return mixed|null
 154      */
 155     public function getGeneratedValue()
 156     {
 157         return $this->generatedValue;
 158     }
 159
 160     /**
 161      * Get resource
 162      */
 163     public function getResource()
 164     {
 165         // TODO: Implement getResource() method.
 166     }
 167
 168     /**
 169      * Count
 170      *
 171      * (PHP 5 &gt;= 5.1.0)<br/>
 172      * Count elements of an object
 173      * @link http://php.net/manual/en/countable.count.php
 174      * @return int The custom count as an integer.
 175      * </p>
 176      * <p>
 177      * The return value is cast to an integer.
 178      */
 179     public function count()
 180     {
 181         return $this->count;
 182     }
 183
 184     /**
 185      * Get field count
 186      *
 187      * @return int
 188      */
 189     public function getFieldCount()
 190     {
 191         return pg_num_fields($this->resource);
 192     }
 193 }