4 changed files with 459 additions and 475 deletions
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<?php |
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/** |
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* Query |
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* |
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* Free Query Builder / Database Abstraction Layer |
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* |
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* @package Query |
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* @author Timothy J. Warren |
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* @copyright Copyright (c) 2012 - 2014 |
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* @link https://github.com/aviat4ion/Query |
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* @license http://philsturgeon.co.uk/code/dbad-license |
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*/ |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Base class for query builder - defines the internal methods |
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* |
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* @package Query |
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* @subpackage Query |
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*/ |
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abstract class Abstract_Query_Builder implements iQuery_Builder { |
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|
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/** |
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* Helper function for returning sql strings |
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* |
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* @param string $type |
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* @param string $table |
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* @param bool $reset |
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* @resturn string |
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*/ |
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protected function _get_compile($type, $table, $reset) |
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{ |
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$sql = $this->_compile($type, $table); |
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|
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// Reset the query builder for the next query |
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if ($reset) |
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{ |
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$this->reset_query(); |
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} |
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|
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return $sql; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Simplify building having clauses |
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* |
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* @param mixed $key |
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* @param mixed $val |
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* @param string $conj |
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* @return $this |
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*/ |
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protected function _having($key, $val=array(), $conj='AND') |
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{ |
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$where = $this->_where($key, $val); |
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|
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// Create key/value placeholders |
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foreach($where as $f => $val) |
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{ |
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// Split each key by spaces, in case there |
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// is an operator such as >, <, !=, etc. |
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$f_array = explode(' ', trim($f)); |
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|
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$item = $this->db->quote_ident($f_array[0]); |
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|
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// Simple key value, or an operator |
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$item .= (count($f_array) === 1) ? '=?' : " {$f_array[1]} ?"; |
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|
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// Put in the query map for select statements |
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$this->having_map[] = array( |
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'conjunction' => ( ! empty($this->having_map)) ? " {$conj} " : ' HAVING ', |
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'string' => $item |
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); |
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} |
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|
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return $this; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Do all the repeditive stuff for where/having type methods |
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* |
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* @param mixed $key |
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* @param mixed $val |
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* @return array |
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*/ |
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protected function _where($key, $val=array()) |
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{ |
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$where = array(); |
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|
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// Key and value passed? Add them to the where array |
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if (is_scalar($key) && is_scalar($val)) |
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{ |
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$where[$key] = $val; |
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$this->where_values[] = $val; |
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} |
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// Array or object, loop through and add to the where array |
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elseif ( ! is_scalar($key)) |
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{ |
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foreach($key as $k => $v) |
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{ |
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$where[$k] = $v; |
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$this->where_values[] = $v; |
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} |
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} |
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|
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return $where; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Simplify generating where string |
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* |
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* @param mixed $key |
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* @param mixed $val |
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* @param string $conj |
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* @return $this |
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*/ |
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protected function _where_string($key, $val=array(), $conj='AND') |
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{ |
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$where = $this->_where($key, $val); |
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|
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// Create key/value placeholders |
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foreach($where as $f => $val) |
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{ |
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// Split each key by spaces, in case there |
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// is an operator such as >, <, !=, etc. |
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$f_array = explode(' ', trim($f)); |
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|
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$item = $this->db->quote_ident($f_array[0]); |
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|
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// Simple key value, or an operator |
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$item .= (count($f_array) === 1) ? '=?' : " {$f_array[1]} ?"; |
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|
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// Get the type of the first item in the query map |
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$first_item = end($this->query_map); |
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|
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// Determine the correct conjunction |
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if (empty($this->query_map)) |
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{ |
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$conj = "\nWHERE "; |
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} |
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elseif ($first_item['type'] === 'group_start') |
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{ |
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$conj = ''; |
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} |
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else |
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{ |
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$conj = " {$conj} "; |
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} |
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|
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// Put in the query map for select statements |
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$this->query_map[] = array( |
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'type' => 'where', |
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'conjunction' => $conj, |
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'string' => $item |
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); |
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} |
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|
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return $this; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Simplify where_in methods |
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* |
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* @param mixed $key |
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* @param mixed $val |
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* @param string $in - The (not) in fragment |
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* @param string $conj - The where in conjunction |
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* @return $this |
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*/ |
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protected function _where_in($key, $val=array(), $in='IN', $conj='AND') |
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{ |
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$key = $this->db->quote_ident($key); |
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$params = array_fill(0, count($val), '?'); |
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foreach($val as $v) |
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{ |
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$this->where_values[] = $v; |
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} |
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$string = $key . " {$in} (".implode(',', $params).') '; |
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|
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$this->query_map[] = array( |
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'type' => 'where_in', |
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'conjunction' => ( ! empty($this->query_map)) ? " {$conj} " : ' WHERE ', |
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'string' => $string |
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); |
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|
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return $this; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Simplify 'like' methods |
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* |
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* @param string $field |
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* @param mixed $val |
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* @param string $pos |
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* @param string $like |
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* @param string $conj |
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* @return $this |
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*/ |
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protected function _like($field, $val, $pos, $like='LIKE', $conj='AND') |
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{ |
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$field = $this->db->quote_ident($field); |
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|
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// Add the like string into the order map |
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$l = $field. " {$like} ?"; |
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if ($pos == 'before') |
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{ |
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$val = "%{$val}"; |
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} |
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elseif ($pos == 'after') |
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{ |
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$val = "{$val}%"; |
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} |
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else |
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{ |
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$val = "%{$val}%"; |
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} |
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|
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$this->query_map[] = array( |
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'type' => 'like', |
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'conjunction' => (empty($this->query_map)) ? ' WHERE ' : " {$conj} ", |
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'string' => $l |
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); |
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// Add to the values array |
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$this->where_values[] = $val; |
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return $this; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Method to simplify select_ methods |
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* |
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* @param string $field |
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* @param string $as |
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* @return string |
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*/ |
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protected function _select($field, $as = FALSE) |
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{ |
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// Escape the identifiers |
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$field = $this->db->quote_ident($field); |
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$as = ($as !== FALSE) |
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? $this->db->quote_ident($as) |
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: $field; |
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return "({$field}) AS {$as} "; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Executes the compiled query |
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* |
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* @param string $type |
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* @param string $table |
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* @param string $sql |
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* @param mixed $vals |
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* @return mixed |
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*/ |
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protected function _run($type, $table, $sql=NULL, $vals=NULL) |
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{ |
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if (is_null($sql)) |
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{ |
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$sql = $this->_compile($type, $table); |
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} |
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|
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if (is_null($vals)) |
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{ |
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$vals = array_merge($this->values, (array) $this->where_values); |
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} |
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|
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$evals = (is_array($vals)) ? $vals : array(); |
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|
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$start_time = microtime(TRUE); |
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|
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if (empty($vals)) |
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{ |
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$res = $this->db->query($sql); |
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} |
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else |
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{ |
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$res = $this->db->prepare_execute($sql, $vals); |
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} |
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$end_time = microtime(TRUE); |
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$total_time = number_format($end_time - $start_time, 5); |
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|
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// Add the interpreted query to the list of executed queries |
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foreach($evals as $k => &$v) |
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{ |
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$v = ( ! is_numeric($v)) ? htmlentities($this->db->quote($v), ENT_NOQUOTES, 'utf-8', FALSE) : $v; |
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} |
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$esql = str_replace('?', "%s", $sql); |
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array_unshift($vals, $esql); |
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array_unshift($evals, $esql); |
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|
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|
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$this->queries[] = array( |
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'time' => $total_time, |
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'sql' => call_user_func_array('sprintf', $evals), |
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); |
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$this->queries['total_time'] += $total_time; |
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|
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array_shift($vals); |
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|
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// Set the last query to get rowcounts properly |
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$this->db->last_query = $sql; |
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|
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// Reset class state for next query |
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$this->reset_query(); |
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|
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return $res; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Calls a function further down the inheritence chain |
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* |
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* @param string $name |
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* @param array $params |
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* @return mixed |
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* @throws BadMethodCallException |
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*/ |
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public function __call($name, $params) |
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{ |
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if (method_exists($this->db, $name)) |
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{ |
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return call_user_func_array(array($this->db, $name), $params); |
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} |
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|
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throw new BadMethodCallException("Method does not exist"); |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* Sub-method for generating sql strings |
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* |
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* @param string $type |
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* @param string $table |
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* @return $string |
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*/ |
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protected function _compile_type($type='', $table='') |
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{ |
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if ($type === 'insert') |
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{ |
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$param_count = count($this->set_array_keys); |
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$params = array_fill(0, $param_count, '?'); |
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$sql = "INSERT INTO {$table} (" |
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. implode(',', $this->set_array_keys) |
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. ")\nVALUES (".implode(',', $params).')'; |
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} |
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elseif ($type === 'update') |
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{ |
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$sql = "UPDATE {$table}\nSET {$this->set_string}"; |
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} |
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elseif ($type === 'delete') |
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{ |
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$sql = "DELETE FROM {$table}"; |
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} |
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else // GET queries |
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{ |
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$sql = "SELECT * \nFROM {$this->from_string}"; |
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|
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// Set the select string |
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if ( ! empty($this->select_string)) |
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{ |
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// Replace the star with the selected fields |
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$sql = str_replace('*', $this->select_string, $sql); |
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} |
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} |
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return $sql; |
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} |
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|
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// -------------------------------------------------------------------------- |
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|
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/** |
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* String together the sql statements for sending to the db |
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* |
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* @param string $type |
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* @param string $table |
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* @return $string |
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*/ |
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protected function _compile($type='', $table='') |
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{ |
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// Get the base clause for the query |
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$sql = $this->_compile_type($type, $this->db->quote_table($table)); |
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|
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// Set the where clause |
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if ( ! empty($this->query_map)) |
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{ |
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foreach($this->query_map as $k => $q) |
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{ |
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$sql .= $q['conjunction'] . $q['string']; |
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} |
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} |
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|
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// Set the group_by clause |
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if ( ! empty($this->group_string)) |
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{ |
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$sql .= $this->group_string; |
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} |
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|
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// Set the order_by clause |
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if ( ! empty($this->order_string)) |
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{ |
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$sql .= $this->order_string; |
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} |
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|
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// Set the having clause |
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if ( ! empty($this->having_map)) |
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{ |
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foreach($this->having_map as $h) |
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{ |
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$sql .= $h['conjunction'] . $h['string']; |
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} |
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} |
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|
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// Set the limit via the class variables |
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if (isset($this->limit) && is_numeric($this->limit)) |
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{ |
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$sql = $this->sql->limit($sql, $this->limit, $this->offset); |
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} |
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|
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// See what needs to happen to only return the query plan |
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if (isset($this->explain) && $this->explain === TRUE) |
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{ |
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$sql = $this->sql->explain($sql); |
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} |
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return $sql; |
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} |
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} |
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// End of abstract_query_builder.php |
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