624 lines
13 KiB
PHP
624 lines
13 KiB
PHP
<?php
|
|
/**
|
|
* Query
|
|
*
|
|
* Free Query Builder / Database Abstraction Layer
|
|
*
|
|
* @package Query
|
|
* @author Timothy J. Warren
|
|
* @copyright Copyright (c) 2012 - 2014
|
|
* @link https://github.com/aviat4ion/Query
|
|
* @license http://philsturgeon.co.uk/code/dbad-license
|
|
*/
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
namespace Query;
|
|
use \Query\Driver\Driver_Interface;
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Abstract Class for internal implementation methods of the Query Builder
|
|
* @package Query
|
|
*/
|
|
abstract class Abstract_Query_Builder implements Query_Builder_Interface {
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! Constants
|
|
// --------------------------------------------------------------------------
|
|
|
|
const KEY = 0;
|
|
const VALUE = 1;
|
|
const BOTH = 2;
|
|
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! SQL Clause Strings
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Compiled 'select' clause
|
|
* @var string
|
|
*/
|
|
protected $select_string = '';
|
|
|
|
/**
|
|
* Compiled 'from' clause
|
|
* @var string
|
|
*/
|
|
protected $from_string;
|
|
|
|
/**
|
|
* Compiled arguments for insert / update
|
|
* @var string
|
|
*/
|
|
protected $set_string;
|
|
|
|
/**
|
|
* Order by clause
|
|
* @var string
|
|
*/
|
|
protected $order_string;
|
|
|
|
/**
|
|
* Group by clause
|
|
* @var string
|
|
*/
|
|
protected $group_string;
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! SQL Clause Arrays
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Keys for insert/update statement
|
|
* @var array
|
|
*/
|
|
protected $set_array_keys = array();
|
|
|
|
/**
|
|
* Key/val pairs for order by clause
|
|
* @var array
|
|
*/
|
|
protected $order_array = array();
|
|
|
|
/**
|
|
* Key/val pairs for group by clause
|
|
* @var array
|
|
*/
|
|
protected $group_array = array();
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! Other Class vars
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Values to apply to prepared statements
|
|
* @var array
|
|
*/
|
|
protected $values = array();
|
|
|
|
/**
|
|
* Values to apply to where clauses in prepared statements
|
|
* @var array
|
|
*/
|
|
protected $where_values = array();
|
|
|
|
/**
|
|
* Value for limit string
|
|
* @var string
|
|
*/
|
|
protected $limit;
|
|
|
|
/**
|
|
* Value for offset in limit string
|
|
* @var int
|
|
*/
|
|
protected $offset;
|
|
|
|
/**
|
|
* Query component order mapping
|
|
* for complex select queries
|
|
*
|
|
* Format:
|
|
* array(
|
|
* 'type' => 'where',
|
|
* 'conjunction' => ' AND ',
|
|
* 'string' => 'k=?'
|
|
* )
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $query_map = array();
|
|
|
|
/**
|
|
* Map for having clause
|
|
* @var array
|
|
*/
|
|
protected $having_map;
|
|
|
|
/**
|
|
* Convenience property for connection management
|
|
* @var string
|
|
*/
|
|
public $conn_name = "";
|
|
|
|
/**
|
|
* List of queries executed
|
|
* @var array
|
|
*/
|
|
public $queries;
|
|
|
|
/**
|
|
* Whether to do only an explain on the query
|
|
* @var bool
|
|
*/
|
|
protected $explain;
|
|
|
|
/**
|
|
* The current database driver
|
|
* @var Driver_Interface
|
|
*/
|
|
public $db;
|
|
|
|
/**
|
|
* Query parser class instance
|
|
* @var Query_Parser
|
|
*/
|
|
protected $parser;
|
|
|
|
/**
|
|
* Alias to driver util class
|
|
* @var \Query\Driver\Abstract_Util
|
|
*/
|
|
public $util;
|
|
|
|
/**
|
|
* Alias to driver sql class
|
|
* @var \Query\Driver\SQL_Interface
|
|
*/
|
|
public $sql;
|
|
|
|
// --------------------------------------------------------------------------
|
|
// Methods
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set values in the class, with either an array or key value pair
|
|
*
|
|
* @param array $var
|
|
* @param mixed $key
|
|
* @param mixed $val
|
|
* @param int $val_type
|
|
* @return array
|
|
*/
|
|
protected function _mixed_set(&$var, $key, $val=NULL, $val_type=self::BOTH)
|
|
{
|
|
$arg = (is_scalar($key) && is_scalar($val))
|
|
? array($key => $val)
|
|
: $key;
|
|
|
|
foreach($arg as $k => $v)
|
|
{
|
|
if (in_array($val_type, array(self::KEY, self::VALUE)))
|
|
{
|
|
$var[] = ($val_type === self::KEY)
|
|
? $k
|
|
: $v;
|
|
}
|
|
else
|
|
{
|
|
$var[$k] = $v;
|
|
}
|
|
}
|
|
|
|
return $var;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Method to simplify select_ methods
|
|
*
|
|
* @param string $field
|
|
* @param string|bool $as
|
|
* @return string
|
|
*/
|
|
protected function _select($field, $as = FALSE)
|
|
{
|
|
// Escape the identifiers
|
|
$field = $this->db->quote_ident($field);
|
|
|
|
$as = ($as !== FALSE)
|
|
? $this->db->quote_ident($as)
|
|
: $field;
|
|
|
|
return "({$field}) AS {$as} ";
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Helper function for returning sql strings
|
|
*
|
|
* @param string $type
|
|
* @param string $table
|
|
* @param bool $reset
|
|
* @return string
|
|
*/
|
|
protected function _get_compile($type, $table, $reset)
|
|
{
|
|
$sql = $this->_compile($type, $table);
|
|
|
|
// Reset the query builder for the next query
|
|
if ($reset) $this->reset_query();
|
|
|
|
return $sql;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Simplify 'like' methods
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @param string $pos
|
|
* @param string $like
|
|
* @param string $conj
|
|
* @return Query_Builder
|
|
*/
|
|
protected function _like($field, $val, $pos, $like='LIKE', $conj='AND')
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
|
|
// Add the like string into the order map
|
|
$l = $field. " {$like} ?";
|
|
|
|
if ($pos == 'before')
|
|
{
|
|
$val = "%{$val}";
|
|
}
|
|
elseif ($pos == 'after')
|
|
{
|
|
$val = "{$val}%";
|
|
}
|
|
else
|
|
{
|
|
$val = "%{$val}%";
|
|
}
|
|
|
|
$conj = (empty($this->query_map)) ? ' WHERE ' : " {$conj} ";
|
|
$this->_append_map($conj, $l, 'like');
|
|
|
|
// Add to the values array
|
|
$this->where_values[] = $val;
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Simplify building having clauses
|
|
*
|
|
* @param mixed $key
|
|
* @param mixed $val
|
|
* @param string $conj
|
|
* @return Query_Builder
|
|
*/
|
|
protected function _having($key, $val=array(), $conj='AND')
|
|
{
|
|
$where = $this->_where($key, $val);
|
|
|
|
// Create key/value placeholders
|
|
foreach($where as $f => $val)
|
|
{
|
|
// Split each key by spaces, in case there
|
|
// is an operator such as >, <, !=, etc.
|
|
$f_array = explode(' ', trim($f));
|
|
|
|
$item = $this->db->quote_ident($f_array[0]);
|
|
|
|
// Simple key value, or an operator
|
|
$item .= (count($f_array) === 1) ? '=?' : " {$f_array[1]} ?";
|
|
|
|
// Put in the having map
|
|
$this->having_map[] = array(
|
|
'conjunction' => ( ! empty($this->having_map)) ? " {$conj} " : ' HAVING ',
|
|
'string' => $item
|
|
);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Do all the repeditive stuff for where/having type methods
|
|
*
|
|
* @param mixed $key
|
|
* @param mixed $val
|
|
* @return array
|
|
*/
|
|
protected function _where($key, $val=array())
|
|
{
|
|
$where = array();
|
|
$this->_mixed_set($where, $key, $val, self::BOTH);
|
|
$this->_mixed_set($this->where_values, $key, $val, self::VALUE);
|
|
return $where;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Simplify generating where string
|
|
*
|
|
* @param mixed $key
|
|
* @param mixed $val
|
|
* @param string $conj
|
|
* @return Query_Builder
|
|
*/
|
|
protected function _where_string($key, $val=array(), $conj='AND')
|
|
{
|
|
// Create key/value placeholders
|
|
foreach($this->_where($key, $val) as $f => $val)
|
|
{
|
|
// Split each key by spaces, in case there
|
|
// is an operator such as >, <, !=, etc.
|
|
$f_array = explode(' ', trim($f));
|
|
|
|
$item = $this->db->quote_ident($f_array[0]);
|
|
|
|
// Simple key value, or an operator
|
|
$item .= (count($f_array) === 1) ? '=?' : " {$f_array[1]} ?";
|
|
|
|
// Get the type of the first item in the query map
|
|
$first_item = end($this->query_map);
|
|
|
|
// Determine the correct conjunction
|
|
if (empty($this->query_map))
|
|
{
|
|
$conj = "\nWHERE ";
|
|
}
|
|
elseif ($first_item['type'] === 'group_start')
|
|
{
|
|
$conj = '';
|
|
}
|
|
else
|
|
{
|
|
$conj = " {$conj} ";
|
|
}
|
|
|
|
$this->_append_map($conj, $item, 'where');
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Simplify where_in methods
|
|
*
|
|
* @param mixed $key
|
|
* @param mixed $val
|
|
* @param string $in - The (not) in fragment
|
|
* @param string $conj - The where in conjunction
|
|
* @return Query_Builder
|
|
*/
|
|
protected function _where_in($key, $val=array(), $in='IN', $conj='AND')
|
|
{
|
|
$key = $this->db->quote_ident($key);
|
|
$params = array_fill(0, count($val), '?');
|
|
|
|
foreach($val as $v)
|
|
{
|
|
$this->where_values[] = $v;
|
|
}
|
|
|
|
$conjunction = ( ! empty($this->query_map)) ? " {$conj} " : ' WHERE ';
|
|
$str = $key . " {$in} (".implode(',', $params).') ';
|
|
|
|
$this->_append_map($conjunction, $str, 'where_in');
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Executes the compiled query
|
|
*
|
|
* @param string $type
|
|
* @param string $table
|
|
* @param string $sql
|
|
* @param array|null $vals
|
|
* @return \PDOStatement
|
|
*/
|
|
protected function _run($type, $table, $sql=NULL, $vals=NULL)
|
|
{
|
|
if (is_null($sql))
|
|
{
|
|
$sql = $this->_compile($type, $table);
|
|
}
|
|
|
|
if (is_null($vals))
|
|
{
|
|
$vals = array_merge($this->values, (array) $this->where_values);
|
|
}
|
|
|
|
$start_time = microtime(TRUE);
|
|
|
|
$res = (empty($vals))
|
|
? $this->db->query($sql)
|
|
: $this->db->prepare_execute($sql, $vals);
|
|
|
|
$end_time = microtime(TRUE);
|
|
$total_time = number_format($end_time - $start_time, 5);
|
|
|
|
// Add this query to the list of executed queries
|
|
$this->_append_query($vals, $sql, $total_time);
|
|
|
|
// Reset class state for next query
|
|
$this->reset_query();
|
|
|
|
return $res;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Add an additional set of mapping pairs to a internal map
|
|
*
|
|
* @param string $conjunction
|
|
* @param string $string
|
|
* @param string $type
|
|
* @return void
|
|
*/
|
|
protected function _append_map($conjunction = '', $string = '', $type = '')
|
|
{
|
|
array_push($this->query_map, array(
|
|
'type' => $type,
|
|
'conjunction' => $conjunction,
|
|
'string' => $string
|
|
));
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Convert the prepared statement into readable sql
|
|
*
|
|
* @param array $vals
|
|
* @param string $sql
|
|
* @param string $total_time
|
|
* @return void
|
|
*/
|
|
protected function _append_query($vals, $sql, $total_time)
|
|
{
|
|
$evals = (is_array($vals)) ? $vals : array();
|
|
$esql = str_replace('?', "%s", $sql);
|
|
|
|
// Quote string values
|
|
foreach($evals as &$v)
|
|
{
|
|
$v = ( ! is_numeric($v)) ? htmlentities($this->db->quote($v), ENT_NOQUOTES, 'utf-8', FALSE) : $v;
|
|
}
|
|
|
|
// Add the query onto the array of values to pass
|
|
// as arguments to sprintf
|
|
array_unshift($evals, $esql);
|
|
|
|
// Add the interpreted query to the list of executed queries
|
|
$this->queries[] = array(
|
|
'time' => $total_time,
|
|
'sql' => call_user_func_array('sprintf', $evals),
|
|
);
|
|
|
|
$this->queries['total_time'] += $total_time;
|
|
|
|
// Set the last query to get rowcounts properly
|
|
$this->db->last_query = $sql;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sub-method for generating sql strings
|
|
*
|
|
* @param string $type
|
|
* @param string $table
|
|
* @return string
|
|
*/
|
|
protected function _compile_type($type='', $table='')
|
|
{
|
|
if ($type === 'insert')
|
|
{
|
|
$param_count = count($this->set_array_keys);
|
|
$params = array_fill(0, $param_count, '?');
|
|
$sql = "INSERT INTO {$table} ("
|
|
. implode(',', $this->set_array_keys)
|
|
. ")\nVALUES (".implode(',', $params).')';
|
|
}
|
|
elseif ($type === 'update')
|
|
{
|
|
$sql = "UPDATE {$table}\nSET {$this->set_string}";
|
|
}
|
|
elseif ($type === 'delete')
|
|
{
|
|
$sql = "DELETE FROM {$table}";
|
|
}
|
|
else // GET queries
|
|
{
|
|
$sql = "SELECT * \nFROM {$this->from_string}";
|
|
|
|
// Set the select string
|
|
if ( ! empty($this->select_string))
|
|
{
|
|
// Replace the star with the selected fields
|
|
$sql = str_replace('*', $this->select_string, $sql);
|
|
}
|
|
}
|
|
|
|
return $sql;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* String together the sql statements for sending to the db
|
|
*
|
|
* @param string $type
|
|
* @param string $table
|
|
* @return $string
|
|
*/
|
|
protected function _compile($type='', $table='')
|
|
{
|
|
// Get the base clause for the query
|
|
$sql = $this->_compile_type($type, $this->db->quote_table($table));
|
|
|
|
$clauses = array(
|
|
'query_map',
|
|
'group_string',
|
|
'order_string',
|
|
'having_map',
|
|
);
|
|
|
|
// Set each type of subclause
|
|
foreach($clauses as $clause)
|
|
{
|
|
$param = $this->$clause;
|
|
if (is_array($param))
|
|
{
|
|
foreach($param as $q)
|
|
{
|
|
$sql .= $q['conjunction'] . $q['string'];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$sql .= $param;
|
|
}
|
|
}
|
|
|
|
// Set the limit via the class variables
|
|
if (is_numeric($this->limit))
|
|
{
|
|
$sql = $this->sql->limit($sql, $this->limit, $this->offset);
|
|
}
|
|
|
|
// See if the query plan, rather than the
|
|
// query data should be returned
|
|
if ($this->explain === TRUE)
|
|
{
|
|
$sql = $this->sql->explain($sql);
|
|
}
|
|
|
|
return $sql;
|
|
}
|
|
}
|
|
|
|
// End of abstract_query_builder.php
|