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Refactoring. Add SqlResultProvider. Add TODO in SqlDbDriver.whereExpr().

namespace
Alexander Demidov 11 years ago
parent
2cb56ad228
commit
ab01d0a41f
4 changed files with 140 additions and 204 deletions
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  1. 55
      model/SqlCriteria.php
  2. 1
      model/SqlDbDriver.php
  3. 215
      model/SqlModel.php
  4. 73
      model/SqlResultProvider.php

55
model/SqlCriteria.php
View File

@ -2,44 +2,50 @@
class SqlCriteria
{
public $select = '*';
private $select = array();
public $distinct = '';
private $distinct = '';
public $where = array();
private $where = array();
public $order = array();
private $order = array('sort' => array(), 'order' => array());
public $limit = '';
private $limit = '';
/**
* @return SqlCriteria
* @var SqlModel
*/
public static function getInstance()
private $model;
public function find()
{
return self;
}
/**
* @param $conditions array @ex array('field=?' => $value, 'field in ? => new DbExpr('(1,2,3)'))
* @param $cond string Condition with "?" placeholder @ex 'field=?'
* @param $value string|array|DbExpr Value. Array transformed to DbExpr(implode(',' Array)) All elements in the array mast be integer
* @return SqlCriteria
* @desc Allow multiple calls
*/
public function where($conditions)
public function where($cond, $value)
{
$this->where = $conditions;
$this->where[$cond] = $value;
return $this;
}
/**
* @param $fields array @ex array('field1', 'field2' => SqlModel::ORDER_DESC)
* @param $field string Field @ex 'field'
* @param $order_desc bool Descendant sort direction
* @return SqlCriteria
* @desc Allow multiple calls
*/
public function order($fields)
public function order($field, $order_desc = false)
{
if (!is_array($fields)) {
$fields = array($fields);
$this->order['sort'][] = $field;
if ($order_desc) {
$this->order['order'][$field] = 'desc';
}
$this->order = $fields;
return $this;
}
@ -50,23 +56,20 @@ class SqlCriteria
*/
public function limit($limit, $offset = 0)
{
if (empty($offset)) {
$this->limit = (int) $limit;
if ($offset) {
$this->limit = (int) $offset . ',';
}
$this->limit = (int)$limit . ',' . (int) $offset;
$this->limit .= (int) $limit;
return $this;
}
/**
* @param mixed $select array @ex array('field1', 'field2', 'field3' => 'field')
* @return string
* @param string $field
* @return SqlCriteria
*/
public function select($select)
public function select($field)
{
if (!is_array($select)) {
$select = array($select);
}
$this->select = $select;
$this->select[] = $field;
return $this;
}

1
model/SqlDbDriver.php
View File

@ -127,6 +127,7 @@ abstract class SqlDbDriver extends DbDriver
/**
* @param mixed $where
* @return string
* TODO: Если cond Это int и term Это тоже int - кидать Exception (иначе эта ошибка повлечет обновление всех записей в таблице
*/
protected function whereExpr($where)
{

215
model/SqlModel.php
View File

@ -15,29 +15,6 @@
*/
abstract class SqlModel extends Model
{
const SELECT = 10;
const DISTINCT = 11;
const WHERE = 12;
const ORDER = 13;
const LIMIT = 15;
const OFFSET = 16;
const ORDER_DESC = 20;
const ORDER_ASC = 21;
const ASSOC_BY_FIELD = 30;
const ASSOC_AS_ARRAY = 31;
const ASSOC_BY_FIELD_IN_ARRAY = 32;
protected static $criteria_data_keys = array(
self::SELECT,
self::DISTINCT,
self::WHERE,
self::ORDER,
self::LIMIT,
/** self::OFFSET // that key no to be a process in foreach criteria_data @see SqlModel::find() */
);
/**
* @param string $ident
* @return string Quoted identifier.
@ -100,9 +77,21 @@ abstract class SqlModel extends Model
{
$sql = '';
if (isset($params['sort'])) {
$order = (isset($params['order']) && $params['order'] == 'desc') ? 'DESC' : 'ASC';
if (in_array($params['sort'], $sortable)) {
$sql = ' ORDER BY ' . $this->identify($params['sort']) . ' ' . $order;
if (!is_array($params['sort'])) {
if (isset($params['order'])) {
$params['order'] = array($params['sort'] => $params['order']);
}
$params['sort'] = array($params['sort']);
}
$order_list = array();
for ($i = 0; $i < count($params['sort']); $i++) {
$order = (isset($params['order'][$params['sort'][$i]]) && $params['order'][$params['sort'][$i]] == 'desc') ? 'DESC' : 'ASC';
if (in_array($params['sort'][$i], $sortable)) {
$order_list[] = $this->identify($params['sort'][$i]) . ' ' . $order;
}
}
if ($order_list) {
$sql = ' ORDER BY ' . implode(',', $order_list);
}
}
return $sql;
@ -200,16 +189,13 @@ abstract class SqlModel extends Model
return $result;
}
/**
* @param $criteria SqlCriteria
* @return string Sql string expression
*/
protected function criteria($criteria)
public function find($select, $distinct, $where, $order, $limit)
{
if (!is_array($criteria->select)) {
$criteria->select = array(new DbExpr($criteria->select));
if (!$select) {
$select = array(new DbExpr('*'));
}
foreach ($criteria->select as $field => &$term) {
foreach ($select as $field => &$term) {
if (is_int($field)) {
if ($term instanceof DbExpr) {
$term = (string) $term;
@ -220,158 +206,31 @@ abstract class SqlModel extends Model
$term = $this->db->quoteIdentifier($field) . ' as ' . $this->db->quoteIdentifier($term);
}
}
foreach ($criteria->where as $cond => &$term) {
if (is_int($cond)) {
if ($term instanceof DbExpr) {
$term = (string) $term;
}
} else {
if (is_array($term)) {
$term = new DbExpr('(' . implode(',', array_map(function($item){return intval($item);}, $term)) . ')');
}
$term = $this->db->quoteInto($cond, $term);
}
}
foreach ($criteria->order as $field => $term) {
if (is_int($field)) {
$term = $this->db->quoteIdentifier($term);
} else {
$order_direction = '';
switch ($term) {
case self::ORDER_DESC:
$order_direction .= ' DESC';
break;
case self::ORDER_ASC:
$order_direction .= ' ASC';
break;
}
$term = $this->db->quoteIdentifier($field) . $order_direction;
}
}
if ($criteria->distinct != '') {
$criteria->distinct = 'DISTINCT ' . $this->db->quoteIdentifier($criteria->distinct);
}
if ($criteria->limit != '') {
$criteria->limit = implode(',',array_map(function($item){return intval($item);},explode(',',$criteria->limit)));
}
return 'SELECT ' . (($criteria->distinct) ? $criteria->distinct : implode(',', $criteria->select))
. ' FROM ' . $this->table()
. (($criteria->where) ? (' WHERE ' . implode(' AND ', $criteria->where)) : '')
. (($criteria->order) ? (' ORDER BY ' . implode(',', $criteria->order)) : '')
. (($criteria->limit) ? (' LIMIT ' . $criteria->limit) : '');
}
/**
* @param $criteria_data array
* @ex array(
* SqlModel::SELECT => '*',
* SqlModel::WHERE => array('field=?', 1),
* SqlModel::ORDER => array('last_name', 'first_name' => SqlModel::ORDER_DESC),
* SqlModel::LIMIT => 10)
* @return mixed|DbStatement[]
*/
public function find($criteria_data)
{
$criteria = new SqlCriteria();
foreach (self::$criteria_data_keys as $criteria_data_key) {
if (isset($criteria_data[$criteria_data_key])) {
$value = $criteria_data[$criteria_data_key];
switch ($criteria_data_key) {
case self::SELECT:
$criteria->select($value);
break;
case self::DISTINCT:
$criteria->distinct($value);
break;
case self::WHERE:
$criteria->where($value);
break;
case self::ORDER:
$criteria->order($value);
break;
case self::LIMIT:
$criteria->limit($value, ((isset($criteria_data[self::OFFSET])) ? $criteria_data[self::OFFSET] : null));
break;
}
foreach ($where as $cond => &$term) {
if (is_array($term)) {
$term = new DbExpr('(' . implode(',', array_map(function($item){return intval($item);}, $term)) . ')');
}
$term = $this->db->quoteInto($cond, $term);
}
$data = $this->criteria($criteria);
if (isset($criteria_data[self::ASSOC_BY_FIELD])) {
return self::fetchAllAssocByField($data, array(), $criteria_data[self::ASSOC_BY_FIELD], ((isset($criteria_data[self::ASSOC_AS_ARRAY])) ? $criteria_data[self::ASSOC_AS_ARRAY] : false), ((isset($criteria_data[self::ASSOC_BY_FIELD_IN_ARRAY])) ? $criteria_data[self::ASSOC_BY_FIELD_IN_ARRAY] : null));
} else {
return self::fetchAll($data);
if ($distinct != '') {
$distinct = 'DISTINCT ' . $this->db->quoteIdentifier($distinct);
}
}
/**
* @param $data string
* @param $params array
* @param null|string $field
* @param bool $assoc_as_array
* @param null|string $field_assoc_in_array
* @return array
* @throws ErrorException|GeneralException
*/
protected function fetchAllAssocByField($data, $params, $field = null, $assoc_as_array = false, $field_assoc_in_array = null)
{
$items = self::fetchAll($data, $params);
if (is_null($field)) {
$field = $this->key;
if ($limit != '') {
$limit = implode(',',array_map(function($item){return intval($item);},explode(',',$limit)));
}
return self::assocByField($items, $field, $assoc_as_array, $field_assoc_in_array);
$result_items = parent::fetchAll('SELECT ' . (($distinct) ? $distinct : implode(',', $select))
. ' FROM ' . $this->table()
. (($where) ? (' WHERE ' . implode(' AND ', $where)) : '')
. (($order) ? ($this->order($order, $order['sort'])) : '')
. (($limit) ? (' LIMIT ' . $limit) : ''));
return new SqlResultProvider($result_items);
}
/**
* @param $items
* @param $field
* @param bool $assoc_as_array
* @param $field_assoc_in_array null|string
* @param $disable_assoc_in_array bool
* @return array
* @throws ErrorException|GeneralException
* @return SqlCriteria
*/
public function assocByField($items, $field, $assoc_as_array = false, $field_assoc_in_array = null, $disable_assoc_in_array = false)
{
$items_assoc_by_field = array();
$primary_key_not_exists_in_items = false;
foreach ($items as $item) {
if (!isset($item->{$field})) {
throw new GeneralException('Undefined field. ' . $field);
}
if ($assoc_as_array) {
if (!isset($items_assoc_by_field[$item->{$field}])) {
$items_assoc_by_field[$item->{$field}] = array();
}
$items_assoc_by_field[$item->{$field}][] = $item;
if (!$primary_key_not_exists_in_items && $this->key && !isset($item->{$this->key})) {
$primary_key_not_exists_in_items = true;
}
} else {
if (isset($items_assoc_by_field[$item->{$field}])) {
throw new ErrorException('Field not unique. May be use assoc_as_array. ' . $field);
}
$items_assoc_by_field[$item->{$field}] = $item;
}
}
// Ассоциирование внутри каждого элемента массива по первичному ключу
// Если первичного ключа нет (не указан в модели или нет поля с первичным ключом в результах выборки) - ассоциирование внутри не производится
// Если указан $field_assoc_in_array - ассоциирование произовдится по этому полю (вернет ошибку, если этого поля нет в результатх выборки)
// Параметр $disable_assoc_in_array отключает ассоциирование внутри результирующего массива
if ($assoc_as_array && !$disable_assoc_in_array &&
(($this->key && !$primary_key_not_exists_in_items) || $field_assoc_in_array)
) {
foreach ($items_assoc_by_field as $key => $value) {
$items_assoc_by_field[$key] = self::assocByField($items_assoc_by_field[$key], (($field_assoc_in_array) ? $field_assoc_in_array : $this->key));
}
}
return $items_assoc_by_field;
}
public function assocByFieldAndGetKeys($items, $field)
public function criteria()
{
$items = self::assocByField($items, $field, true, null, true);
return array_keys($items);
return new SqlCriteria();
}
}

73
model/SqlResultProvider.php
View File

@ -0,0 +1,73 @@
<?php
class SqlResultProvider
{
/**
* @var array
*/
private $result_items;
private $result_items_base;
/**
* @param $result_items array
*/
public function __construct($result_items)
{
$this->result_items = $result_items;
}
public function assoc($field, $assoc_as_array = false, $field_assoc_in_array = null)
{
if (is_null($this->result_items_base)) {
$this->result_items_base = $this->result_items;
}
$result_items_assoc = array();
foreach ($this->result_items_base as $item) {
if (!isset($item->{$field})) {
throw new ErrorException('Undefined field. ' . $field);
}
if ($assoc_as_array) {
if (!isset($result_items_assoc[$item->{$field}])) {
$result_items_assoc[$item->{$field}] = array();
}
$result_items_assoc[$item->{$field}][] = $item;
} else {
if (isset($result_items_assoc[$item->{$field}])) {
throw new ErrorException('Field not unique. May be use assoc_as_array. ' . $field);
}
$result_items_assoc[$item->{$field}] = $item;
}
}
// Ассоциирование внутри каждого элемента массива
// $field_assoc_in_array - ассоциирование произовдится по этому полю (вернет ошибку, если этого поля нет в результатх выборки)
if ($assoc_as_array && $field_assoc_in_array) {
foreach ($result_items_assoc as &$value) {
$sql_result_provider = new SqlResultProvider($value);
$value = $sql_result_provider->assoc($field_assoc_in_array)->fetchAll();
}
}
$this->result_items = $result_items_assoc;
return $this;
}
public function getKeys()
{
return array_keys($this->result_items);
}
public function fetchAll()
{
return $this->result_items;
}
public function fetchKey($key)
{
return $this->result_items[$key];
}
public function fetch()
{
return current($this->result_items);
}
}
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