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-rw-r--r--system/database/DB_result.php197
1 files changed, 150 insertions, 47 deletions
diff --git a/system/database/DB_result.php b/system/database/DB_result.php
index 196febe2c..d44df6c02 100644
--- a/system/database/DB_result.php
+++ b/system/database/DB_result.php
@@ -38,32 +38,74 @@
*/
class CI_DB_result {
- public $conn_id = NULL;
- public $result_id = NULL;
+ public $conn_id;
+ public $result_id;
public $result_array = array();
public $result_object = array();
public $custom_result_object = array();
public $current_row = 0;
- public $num_rows = 0;
- public $row_data = NULL;
+ public $num_rows;
+ public $row_data;
+ /**
+ * Constructor
+ *
+ * @param object
+ * @return void
+ */
public function __construct(&$driver_object)
{
$this->conn_id = $driver_object->conn_id;
$this->result_id = $driver_object->result_id;
}
+ // --------------------------------------------------------------------
+
/**
- * Query result. Acts as a wrapper function for the following functions.
+ * Number of rows in the result set
*
- * @param string can be "object" or "array"
- * @return object
+ * @return int
+ */
+ public function num_rows()
+ {
+ if (is_int($this->num_rows))
+ {
+ return $this->num_rows;
+ }
+ elseif (count($this->result_array) > 0)
+ {
+ return $this->num_rows = count($this->result_array);
+ }
+ elseif (count($this->result_object) > 0)
+ {
+ return $this->num_rows = count($this->result_object);
+ }
+
+ return $this->num_rows = count($this->result_array());
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Query result. Acts as a wrapper function for the following functions.
+ *
+ * @param string 'object', 'array' or a custom class name
+ * @return array
*/
public function result($type = 'object')
{
- if ($type === 'array') return $this->result_array();
- elseif ($type === 'object') return $this->result_object();
- else return $this->custom_result_object($type);
+ if ($type === 'array')
+ {
+ return $this->result_array();
+ }
+ elseif ($type === 'object')
+ {
+ return $this->result_object();
+ }
+ else
+ {
+ return $this->custom_result_object($type);
+ }
}
// --------------------------------------------------------------------
@@ -76,33 +118,50 @@ class CI_DB_result {
*/
public function custom_result_object($class_name)
{
- if (array_key_exists($class_name, $this->custom_result_object))
+ if (isset($this->custom_result_object[$class_name]))
{
return $this->custom_result_object[$class_name];
}
-
- if ($this->result_id === FALSE OR $this->num_rows() == 0)
+ elseif ( ! $this->result_id OR $this->num_rows === 0)
{
return array();
}
- // add the data to the object
- $this->_data_seek(0);
- $result_object = array();
+ // Don't fetch the result set again if we already have it
+ $_data = NULL;
+ if (($c = count($this->result_array)) > 0)
+ {
+ $_data = 'result_array';
+ }
+ elseif (($c = count($this->result_object)) > 0)
+ {
+ $_data = 'result_object';
+ }
- while ($row = $this->_fetch_object())
+ if ($_data !== NULL)
{
- $object = new $class_name();
- foreach ($row as $key => $value)
+ for ($i = 0; $i < $c; $i++)
{
- $object->$key = $value;
+ $this->custom_result_object[$class_name][$i] = new $class_name();
+
+ foreach ($this->{$_data}[$i] as $key => $value)
+ {
+ $this->custom_result_object[$class_name][$i]->$key = $value;
+ }
}
- $result_object[] = $object;
+ return $this->custom_result_object[$class_name];
+ }
+
+ $this->_data_seek(0);
+ $this->custom_result_object[$class_name] = array();
+
+ while ($row = $this->_fetch_object($class_name))
+ {
+ $this->custom_result_object[$class_name][] = $row;
}
- // return the array
- return $this->custom_result_object[$class_name] = $result_object;
+ return $this->custom_result_object[$class_name];
}
// --------------------------------------------------------------------
@@ -119,14 +178,24 @@ class CI_DB_result {
return $this->result_object;
}
- // In the event that query caching is on the result_id variable
- // will return FALSE since there isn't a valid SQL resource so
- // we'll simply return an empty array.
- if ($this->result_id === FALSE OR $this->num_rows() == 0)
+ // In the event that query caching is on, the result_id variable
+ // will not be a valid resource so we'll simply return an empty
+ // array.
+ if ( ! $this->result_id OR $this->num_rows === 0)
{
return array();
}
+ if (($c = count($this->result_array)) > 0)
+ {
+ for ($i = 0; $i < $c; $i++)
+ {
+ $this->result_object[$i] = (object) $this->result_array[$i];
+ }
+
+ return $this->result_object;
+ }
+
$this->_data_seek(0);
while ($row = $this->_fetch_object())
{
@@ -139,7 +208,7 @@ class CI_DB_result {
// --------------------------------------------------------------------
/**
- * Query result. "array" version.
+ * Query result. "array" version.
*
* @return array
*/
@@ -150,14 +219,24 @@ class CI_DB_result {
return $this->result_array;
}
- // In the event that query caching is on the result_id variable
- // will return FALSE since there isn't a valid SQL resource so
- // we'll simply return an empty array.
- if ($this->result_id === FALSE OR $this->num_rows() == 0)
+ // In the event that query caching is on, the result_id variable
+ // will not be a valid resource so we'll simply return an empty
+ // array.
+ if ( ! $this->result_id OR $this->num_rows === 0)
{
return array();
}
+ if (($c = count($this->result_object)) > 0)
+ {
+ for ($i = 0; $i < $c; $i++)
+ {
+ $this->result_array[$i] = (array) $this->result_object[$i];
+ }
+
+ return $this->result_array;
+ }
+
$this->_data_seek(0);
while ($row = $this->_fetch_assoc())
{
@@ -224,7 +303,7 @@ class CI_DB_result {
return;
}
- if ($key != '' && ! is_null($value))
+ if ($key !== '' && ! is_null($value))
{
$this->row_data[$key] = $value;
}
@@ -239,20 +318,23 @@ class CI_DB_result {
*/
public function custom_row_object($n, $type)
{
- $result = $this->custom_result_object($type);
- if (count($result) === 0)
+ isset($this->custom_result_object[$type]) OR $this->custom_result_object($type);
+
+ if (count($this->custom_result_object[$type]) === 0)
{
- return $result;
+ return NULL;
}
- if ($n != $this->current_row && isset($result[$n]))
+ if ($n !== $this->current_row && isset($this->custom_result_object[$type][$n]))
{
$this->current_row = $n;
}
- return $result[$this->current_row];
+ return $this->custom_result_object[$type][$this->current_row];
}
+ // --------------------------------------------------------------------
+
/**
* Returns a single result row - object version
*
@@ -263,10 +345,10 @@ class CI_DB_result {
$result = $this->result_object();
if (count($result) === 0)
{
- return $result;
+ return NULL;
}
- if ($n != $this->current_row && isset($result[$n]))
+ if ($n !== $this->current_row && isset($result[$n]))
{
$this->current_row = $n;
}
@@ -286,10 +368,10 @@ class CI_DB_result {
$result = $this->result_array();
if (count($result) === 0)
{
- return $result;
+ return NULL;
}
- if ($n != $this->current_row && isset($result[$n]))
+ if ($n !== $this->current_row && isset($result[$n]))
{
$this->current_row = $n;
}
@@ -307,7 +389,7 @@ class CI_DB_result {
public function first_row($type = 'object')
{
$result = $this->result($type);
- return (count($result) === 0) ? $result : $result[0];
+ return (count($result) === 0) ? NULL : $result[0];
}
// --------------------------------------------------------------------
@@ -320,7 +402,7 @@ class CI_DB_result {
public function last_row($type = 'object')
{
$result = $this->result($type);
- return (count($result) === 0) ? $result : $result[count($result) - 1];
+ return (count($result) === 0) ? NULL : $result[count($result) - 1];
}
// --------------------------------------------------------------------
@@ -335,7 +417,7 @@ class CI_DB_result {
$result = $this->result($type);
if (count($result) === 0)
{
- return $result;
+ return NULL;
}
if (isset($result[$this->current_row + 1]))
@@ -358,7 +440,7 @@ class CI_DB_result {
$result = $this->result($type);
if (count($result) === 0)
{
- return $result;
+ return NULL;
}
if (isset($result[$this->current_row - 1]))
@@ -371,6 +453,28 @@ class CI_DB_result {
// --------------------------------------------------------------------
/**
+ * Returns an unbuffered row and move pointer to next row
+ *
+ * @param string 'array', 'object' or a custom class name
+ * @return mixed either a result object or array
+ */
+ public function unbuffered_row($type = 'object')
+ {
+ if ($type === 'array')
+ {
+ return $this->_fetch_assoc();
+ }
+ elseif ($type === 'object')
+ {
+ return $this->_fetch_object();
+ }
+
+ return $this->_fetch_object($type);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* The following functions are normally overloaded by the identically named
* methods in the platform-specific driver -- except when query caching
* is used. When caching is enabled we do not load the other driver.
@@ -379,7 +483,6 @@ class CI_DB_result {
* operational due to the unavailability of the database resource IDs with
* cached results.
*/
- public function num_rows() { return $this->num_rows; }
public function num_fields() { return 0; }
public function list_fields() { return array(); }
public function field_data() { return array(); }
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-07-01 05:04:05 +0200