diff options
Diffstat (limited to 'system/database/drivers/sqlite3/sqlite3_result.php')
| -rw-r--r-- | system/database/drivers/sqlite3/sqlite3_result.php | 451 |
1 files changed, 1 insertions, 450 deletions
diff --git a/system/database/drivers/sqlite3/sqlite3_result.php b/system/database/drivers/sqlite3/sqlite3_result.php index 946b36557..4d59bb08a 100644 --- a/system/database/drivers/sqlite3/sqlite3_result.php +++ b/system/database/drivers/sqlite3/sqlite3_result.php @@ -33,33 +33,14 @@ * @category Database * @author Andrey Andreev * @link http://codeigniter.com/user_guide/database/ + * @since 3.0 */ class CI_DB_sqlite3_result extends CI_DB_result { - // Overwriting the parent here, so we have a way to know if it's already set - public $num_rows; - // num_fields() might be called multiple times, so we'll use this one to cache it's result protected $_num_fields; /** - * Number of rows in the result set - * - * @return int - */ - public function num_rows() - { - /* The SQLite3 driver doesn't have a graceful way to do this, - * so we'll have to do it on our own. - */ - return is_int($this->num_rows) - ? $this->num_rows - : $this->num_rows = count($this->result_array()); - } - - // -------------------------------------------------------------------- - - /** * Number of fields in the result set * * @return int @@ -165,436 +146,6 @@ class CI_DB_sqlite3_result extends CI_DB_result { // -------------------------------------------------------------------- /** - * Query result. "array" version. - * - * return array - */ - public function result_array() - { - if (count($this->result_array) > 0) - { - return $this->result_array; - } - elseif (is_array($this->row_data)) - { - if (count($this->row_data) === 0) - { - return $this->result_array; - } - else - { - $row_index = count($this->row_data); - } - } - else - { - $row_index = 0; - $this->row_data = array(); - } - - $row = NULL; - while ($row = $this->_fetch_assoc()) - { - $this->row_data[$row_index++] = $row; - } - - return $this->result_array = $this->row_data; - } - - // -------------------------------------------------------------------- - - /** - * Query result. "object" version. - * - * @return array - */ - public function result_object() - { - if (count($this->result_object) > 0) - { - return $this->result_object; - } - elseif (count($this->result_array) > 0) - { - for ($i = 0, $c = count($this->result_array); $i < $c; $i++) - { - $this->result_object[] = (object) $this->result_array[$i]; - } - - return $this->result_object; - } - elseif (is_array($this->row_data)) - { - if (count($this->row_data) === 0) - { - return $this->result_object; - } - else - { - $row_index = count($this->row_data); - for ($i = 0; $i < $row_index; $i++) - { - $this->result_object[$i] = (object) $this->row_data[$i]; - } - } - } - else - { - $row_index = 0; - $this->row_data = array(); - } - - $row = NULL; - while ($row = $this->_fetch_assoc()) - { - $this->row_data[$row_index] = $row; - $this->result_object[$row_index++] = (object) $row; - } - - $this->result_array = $this->row_data; - - /* As described for the num_rows() method - there's no easy - * way to get the number of rows selected. Our work-around - * solution (as in here as well) first checks if result_array - * exists and returns its count. It doesn't however check for - * custom_object_result, so - do it here. - */ - if ( ! is_int($this->num_rows)) - { - $this->num_rows = count($this->result_object); - } - - return $this->result_object; - } - - // -------------------------------------------------------------------- - - /** - * Query result. Custom object version. - * - * @param string class name used to instantiate rows to - * @return array - */ - public function custom_result_object($class_name) - { - if (array_key_exists($class_name, $this->custom_result_object)) - { - return $this->custom_result_object[$class_name]; - } - - if ( ! class_exists($class_name) OR ! is_object($this->result_id) OR $this->num_rows() === 0) - { - return array(); - } - - /* Even if result_array hasn't been set prior to custom_result_object being called, - * num_rows() has done it. - */ - $data = &$this->result_array; - - $result_object = array(); - for ($i = 0, $c = count($data); $i < $c; $i++) - { - $result_object[$i] = new $class_name(); - foreach ($data[$i] as $key => $value) - { - $result_object[$i]->$key = $value; - } - } - - /* As described for the num_rows() method - there's no easy - * way to get the number of rows selected. Our work-around - * solution (as in here as well) first checks if result_array - * exists and returns its count. It doesn't however check for - * custom_object_result, so - do it here. - */ - if ( ! is_int($this->num_rows)) - { - $this->num_rows = count($result_object); - } - - // Cache and return the array - return $this->custom_result_object[$class_name] = $result_object; - } - - // -------------------------------------------------------------------- - - /* Single row result. - * - * Acts as a wrapper for row_object(), row_array() - * and custom_row_object(). Also used by first_row(), next_row() - * and previous_row(). - * - * @param int row index - * @param string ('object', 'array' or a custom class name) - * @return mixed whatever was passed to the second parameter - */ - public function row($n = 0, $type = 'object') - { - if ($type === 'object') - { - return $this->row_object($n); - } - elseif ($type === 'array') - { - return $this->row_array($n); - } - - return $this->custom_row_object($n, $type); - } - - // -------------------------------------------------------------------- - - /* Single row result. Array version. - * - * @param int row index - * @return array - */ - public function row_array($n = 0) - { - // Make sure $n is not a string - if ( ! is_int($n)) - { - $n = (int) $n; - } - - /* If row_data is initialized, it means that we've already tried - * (at least) to fetch some data, so ... check if we already have - * this row. - */ - if (is_array($this->row_data)) - { - /* If we already have row_data[$n] - return it. - * - * If we enter the elseif, there's a number of reasons to - * return an empty array: - * - * - count($this->row_data) === 0 means there are no results - * - num_rows being set or result_array having count() > 0 means - * that we've already fetched all data and $n is greater than - * our highest row index available - * - $n < $this->current_row means that if such row existed, - * we would've already returned it, therefore $n is an - * invalid index - */ - if (isset($this->row_data[$n])) // We already have this row - { - $this->current_row = $n; - return $this->row_data[$n]; - } - elseif (count($this->row_data) === 0 OR is_int($this->num_rows) - OR count($this->result_array) > 0 OR $n < $this->current_row) - { - // No such row exists - return NULL; - } - - // Get the next row index that would actually need to be fetched - $current_row = ($this->current_row < count($this->row_data)) ? count($this->row_data) : $this->current_row + 1; - } - else - { - $current_row = $this->current_row = 0; - $this->row_data = array(); - } - - /* Fetch more data, if available - * - * NOTE: Operator precedence is important here, if you change - * 'AND' with '&&' - it WILL BREAK the results, as - * $row will be assigned the scalar value of both - * expressions! - */ - while ($row = $this->_fetch_assoc() AND $current_row <= $n) - { - $this->row_data[$current_row++] = $row; - } - - // This would mean that there's no (more) data to fetch - if ( ! is_array($this->row_data) OR ! isset($this->row_data[$n])) - { - // Cache what we already have - if (is_array($this->row_data)) - { - $this->num_rows = count($this->row_data); - /* Usually, row_data could have less elements than result_array, - * but at this point - they should be exactly the same. - */ - $this->result_array = $this->row_data; - } - else - { - $this->num_rows = 0; - } - - return NULL; - } - - $this->current_row = $n; - return $this->row_data[$n]; - } - - // -------------------------------------------------------------------- - - /* Single row result. Object version. - * - * @param int row index - * @return mixed object if row found; empty array if not - */ - public function row_object($n = 0) - { - // Make sure $n is not a string - if ( ! is_int($n)) - { - $n = (int) $n; - } - - /* Logic here is exactly the same as in row_array, - * except we have to cast row_data[$n] to an object. - * - * If we already have result_object though - we can - * directly return from it. - */ - if (isset($this->result_object[$n])) - { - $this->current_row = $n; - return $this->result_object[$n]; - } - - $row = $this->row_array($n); - // Cast only if the row exists - if (count($row) > 0) - { - $this->current_row = $n; - return (object) $row; - } - - return NULL; - } - - // -------------------------------------------------------------------- - - /* Single row result. Custom object version. - * - * @param int row index - * @param string custom class name - * @return mixed custom object if row found; empty array otherwise - */ - public function custom_row_object($n = 0, $class_name) - { - // Make sure $n is not a string - if ( ! is_int($n)) - { - $n = (int) $n; - } - - if (array_key_exists($class_name, $this->custom_result_object)) - { - /* We already have a the whole result set with this class_name, - * return the specified row if it exists, and an empty array if - * it doesn't. - */ - if (isset($this->custom_result_object[$class_name][$n])) - { - $this->current_row = $n; - return $this->custom_result_object[$class_name][$n]; - } - else - { - return NULL; - } - } - elseif ( ! class_exists($class_name)) // No such class exists - { - return NULL; - } - - $row = $this->row_array($n); - // A non-array would mean that the row doesn't exist - if ( ! is_array($row)) - { - return NULL; - } - - // Convert to the desired class and return - $row_object = new $class_name(); - foreach ($row as $key => $value) - { - $row_object->$key = $value; - } - - $this->current_row = $n; - return $row_object; - } - - // -------------------------------------------------------------------- - - /* First row result. - * - * @param string ('object', 'array' or a custom class name) - * @return mixed whatever was passed to the second parameter - */ - public function first_row($type = 'object') - { - return $this->row(0, $type); - } - - // -------------------------------------------------------------------- - - /* Last row result. - * - * @param string ('object', 'array' or a custom class name) - * @return mixed whatever was passed to the second parameter - */ - public function last_row($type = 'object') - { - $result = &$this->result($type); - if ( ! isset($this->num_rows)) - { - $this->num_rows = count($result); - } - $this->current_row = $this->num_rows - 1; - return $result[$this->current_row]; - } - - // -------------------------------------------------------------------- - - /* Next row result. - * - * @param string ('object', 'array' or a custom class name) - * @return mixed whatever was passed to the second parameter - */ - public function next_row($type = 'object') - { - if (is_array($this->row_data)) - { - $count = count($this->row_data); - $n = ($this->current_row > $count OR ($this->current_row === 0 && $count === 0)) ? $count : $this->current_row + 1; - } - else - { - $n = 0; - } - - return $this->row($n, $type); - } - - // -------------------------------------------------------------------- - - /* Previous row result. - * - * @param string ('object', 'array' or a custom class name) - * @return mixed whatever was passed to the second parameter - */ - public function previous_row($type = 'object') - { - $n = ($this->current_row !== 0) ? $this->current_row - 1 : 0; - return $this->row($n, $type); - } - - // -------------------------------------------------------------------- - - /** * Data Seek * * Moves the internal pointer to the desired offset. We call |