Removed DQL Parser
This commit is contained in:
doctrine
parent
bafcd6625c
commit
66c83da385
@ -1,833 +0,0 @@
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<?php
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/**
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* Doctrine_DQL_Parser
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* this is the base class for generating complex data graphs
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* (multiple collections, multiple factories, multiple data access objects)
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* with only one query
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*
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*
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* @author Konsta Vesterinen
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* @package Doctrine ORM
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* @url www.phpdoctrine.com
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* @license LGPL
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* @version 1.0 alpha
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*/
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class Doctrine_DQL_Parser {
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/**
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* @var array $fetchmodes an array containing all fetchmodes
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*/
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private $fetchModes = array();
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/**
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* @var array $fields an array containing all the selected fields
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*/
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private $fields = array();
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/**
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* @var array $tablenames an array containing all the tables used in the query
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*/
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private $tablenames = array();
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/**
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* @var array $collections an array containing all collections this parser has created/will create
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*/
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private $collections = array();
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/**
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* @var array $from query FROM parts
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*/
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private $from = array();
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/**
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* @var array $join query JOIN parts
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*/
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private $join = array();
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/**
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* @var string $where
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*/
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private $where = array();
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/**
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* @var array $orderby query ORDER BY parts
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*/
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private $orderby = array();
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/**
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* @var integer $limit query limit
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*/
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private $limit;
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/**
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* @var integer $offset query offset
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*/
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private $offset;
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private $joined = array();
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/**
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* @var array $data fetched data
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*/
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private $data = array();
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/**
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* @var Doctrine_Session $session Doctrine_Session object
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*/
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private $session;
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private $inheritanceApplied = false;
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private $aggregate = false;
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private $paths = array();
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private $connectors = array();
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/**
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* @param Doctrine_Session $session
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*/
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public function __construct(Doctrine_Session $session) {
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$this->session = $session;
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}
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/**
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* clear
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* resets all the variables
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*/
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private function clear() {
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$this->fetchModes = array();
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$this->fields = array();
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$this->tnames = array();
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$this->from = array();
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$this->join = array();
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$this->where = array();
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$this->orderby = array();
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$this->inheritanceApplied = false;
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$this->aggregate = false;
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$this->data = array();
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$this->connectors = array();
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$this->collections = array();
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$this->paths = array();
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$this->joined = array();
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}
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/**
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* loadFields -- this method loads fields for a given factory and
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* constructs a little bit of sql for every field
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*
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* fields of the factories become: [tablename].[fieldname] as [tablename]__[fieldname]
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*
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* @access private
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* @param object Doctrine_Table $table a Doctrine_Table object
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* @param integer $fetchmode fetchmode the table is using eg. Doctrine::FETCH_LAZY
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* @return void
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*/
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private function loadFields(Doctrine_Table $table,$fetchmode) {
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$name = $table->getComponentName();
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switch($fetchmode):
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case Doctrine::FETCH_OFFSET:
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$this->limit = $table->getAttribute(Doctrine::ATTR_COLL_LIMIT);
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case Doctrine::FETCH_IMMEDIATE:
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$names = $table->getColumnNames();
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break;
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case Doctrine::FETCH_LAZY_OFFSET:
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$this->limit = $table->getAttribute(Doctrine::ATTR_COLL_LIMIT);
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case Doctrine::FETCH_LAZY:
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case Doctrine::FETCH_BATCH:
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$names = $table->getPrimaryKeys();
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break;
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default:
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throw new Doctrine_Exception("Unknown fetchmode.");
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endswitch;
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$cname = $table->getComponentName();
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$this->fetchModes[$cname] = $fetchmode;
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$tablename = $table->getTableName();
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$count = count($this->tnames);
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foreach($names as $name) {
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if($count == 0) {
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$this->fields[] = $tablename.".".$name;
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} else {
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$this->fields[] = $tablename.".".$name." AS ".$cname."__".$name;
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}
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}
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}
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/**
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* @param integer $limit
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*/
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final public function setLimit($limit) {
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$this->limit = $limit;
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}
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/**
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* @param integer $offset
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*/
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final public function setOffset($offset) {
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$this->offset = $offset;
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}
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/**
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* @return integer
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*/
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final public function getLimit() {
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return $this->limit;
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}
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/**
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* @return integer
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*/
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final public function getOffset() {
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return $this->offset;
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}
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/**
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* @return string the built sql query
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*/
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final public function getQuery() {
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if(empty($this->fields) || empty($this->from))
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return false;
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// build the basic query
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$q = "SELECT ".implode(", ",$this->fields).
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" FROM ";
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foreach($this->from as $tname => $bool) {
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$str = $tname;
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if(isset($this->join[$tname]))
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$str .= " ".$this->join[$tname];
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$a[] = $str;
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}
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$q .= implode(", ",$a);
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$this->applyInheritance();
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if( ! empty($this->where))
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$q .= " WHERE ".implode(" AND ",$this->where);
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if( ! empty($this->orderby))
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$q .= " ORDER BY ".implode(", ",$this->orderby);
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if( ! empty($this->limit) || ! empty($this->offset))
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$q = $this->session->modifyLimitQuery($q,$this->limit,$this->offset);
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return $q;
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}
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/**
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* sql delete for mysql
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*/
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final public function buildDelete() {
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if(empty($this->fields) || empty($this->from))
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return false;
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$a = array_merge(array_keys($this->from),$this->joined);
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$q = "DELETE ".implode(", ",$a)." FROM ";
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$a = array();
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foreach($this->from as $tname => $bool) {
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$str = $tname;
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if(isset($this->join[$tname]))
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$str .= " ".$this->join[$tname];
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$a[] = $str;
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}
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$q .= implode(", ",$a);
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$this->applyInheritance();
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if( ! empty($this->where))
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$q .= " WHERE ".implode(" AND ",$this->where);
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if( ! empty($this->orderby))
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$q .= " ORDER BY ".implode(", ",$this->orderby);
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if( ! empty($this->limit) && ! empty($this->offset))
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$q = $this->session->modifyLimitQuery($q,$this->limit,$this->offset);
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return $q;
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}
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/**
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* applyInheritance
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* applies column aggregation inheritance to DQL query
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* @return boolean
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*/
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final public function applyInheritance() {
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if($this->inheritanceApplied)
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return false;
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// get the inheritance maps
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$array = array();
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foreach($this->tnames as $objTable):
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$tname = $objTable->getTableName();
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$array[$tname][] = $objTable->getInheritanceMap();
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endforeach;
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// apply inheritance maps
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$str = "";
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$c = array();
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foreach($array as $tname => $maps) {
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$a = array();
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foreach($maps as $map) {
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$b = array();
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foreach($map as $field=>$value) {
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$b[] = $tname.".$field = $value";
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}
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if( ! empty($b)) $a[] = implode(" AND ",$b);
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}
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if( ! empty($a)) $c[] = implode(" || ",$a);
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}
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$str .= implode(" || ",$c);
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$this->addWhere($str);
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$this->inheritanceApplied = true;
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return true;
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}
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/**
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* @param string $where
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* @return boolean
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*/
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final public function addWhere($where) {
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if(empty($where))
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return false;
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$this->where[] = "(".$where.")";
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return true;
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}
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/**
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* @param string $from from part of the query
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*/
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final public function addFrom($from) {
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$this->from[] = $from;
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}
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/**
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* getData
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* @param $key the factory name
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* @return array the data row for the specified factory
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*/
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final public function getData($key) {
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if(isset($this->data[$key]) && is_array($this->data[$key]))
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return $this->data[$key];
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return array();
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}
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/**
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* execute
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* executes the datagraph and populates Doctrine_Collections
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* @param string $params
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* @return Doctrine_Collection the root collection
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*/
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private function execute($params = array()) {
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switch(count($this->tnames)):
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case 0:
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throw new DQLException();
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break;
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case 1:
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$query = $this->getQuery();
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$keys = array_keys($this->tnames);
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$name = $this->tnames[$keys[0]]->getComponentName();
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$stmt = $this->session->execute($query,$params);
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while($data = $stmt->fetch(PDO::FETCH_ASSOC)):
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foreach($data as $key => $value):
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$e = explode("__",$key);
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if(count($e) > 1) {
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$data[$e[1]] = $value;
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} else {
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$data[$e[0]] = $value;
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}
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unset($data[$key]);
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endforeach;
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$this->data[$name][] = $data;
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endwhile;
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return $this->getCollection($keys[0]);
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break;
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default:
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$query = $this->getQuery();
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$keys = array_keys($this->tnames);
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$root = $keys[0];
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$stmt = $this->session->execute($query,$params);
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$previd = array();
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$coll = $this->getCollection($root);
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$array = $this->parseData($stmt);
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foreach($array as $data):
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/**
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* remove duplicated data rows and map data into objects
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*/
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foreach($data as $key => $row):
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if(empty($row))
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continue;
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$key = ucwords($key);
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$name = $this->tnames[$key]->getComponentName();
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if( ! isset($previd[$name]))
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$previd[$name] = array();
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if($previd[$name] !== $row) {
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$this->tnames[$name]->setData($row);
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$record = $this->tnames[$name]->getRecord();
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if($name == $root) {
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$this->tnames[$name]->setData($row);
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$record = $this->tnames[$name]->getRecord();
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$coll->add($record);
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} else {
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$last = $coll->getLast();
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if( ! $last->hasReference($name)) {
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$last->initReference($this->getCollection($name),$this->connectors[$name]);
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}
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$last->addReference($record);
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}
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}
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$previd[$name] = $row;
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endforeach;
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endforeach;
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return $coll;
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endswitch;
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}
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/**
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* parseData
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* @return array
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*/
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public function parseData(PDOStatement $stmt) {
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$array = array();
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while($data = $stmt->fetch(PDO::FETCH_ASSOC)):
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/**
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* parse the data into two-dimensional array
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*/
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foreach($data as $key => $value):
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$e = explode("__",$key);
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if(count($e) > 1) {
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$data[$e[0]][$e[1]] = $value;
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} else {
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$data[0][$e[0]] = $value;
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}
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unset($data[$key]);
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endforeach;
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$array[] = $data;
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endwhile;
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$stmt->closeCursor();
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return $array;
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}
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/**
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* @return Doctrine_Table
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*/
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public function getTable($name) {
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return $this->tnames[$name];
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}
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/**
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* getCollection
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* @param integer $index
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*/
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private function getCollection($name) {
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$table = $this->session->getTable($name);
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switch($this->fetchModes[$name]):
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case Doctrine::FETCH_BATCH:
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$coll = new Doctrine_Collection_Batch($table);
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break;
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case Doctrine::FETCH_LAZY:
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$coll = new Doctrine_Collection_Lazy($table);
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break;
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case Doctrine::FETCH_OFFSET:
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$coll = new Doctrine_Collection_Offset($table);
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break;
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case Doctrine::FETCH_IMMEDIATE:
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$coll = new Doctrine_Collection_Immediate($table);
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break;
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case Doctrine::FETCH_LAZY_OFFSET:
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$coll = new Doctrine_Collection_LazyOffset($table);
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break;
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endswitch;
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$coll->populate($this);
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return $coll;
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}
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/**
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* query the database with DQL (Doctrine Query Language)
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*
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* @param string $query DQL query
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* @param array $params parameters
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*/
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public function query($query,$params = array()) {
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$this->parseQuery($query);
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if($this->aggregate) {
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$keys = array_keys($this->tnames);
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$query = $this->getQuery();
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$stmt = $this->tnames[$keys[0]]->getSession()->select($query,$this->limit,$this->offset);
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$data = $stmt->fetch(PDO::FETCH_ASSOC);
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if(count($data) == 1) {
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return current($data);
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} else {
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return $data;
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}
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} else {
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return $this->execute($params);
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}
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}
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/**
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* DQL PARSER
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*/
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final public function parseQuery($query) {
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$this->clear();
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$e = self::bracketExplode($query," ","(",")");
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$parts = array();
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foreach($e as $k=>$part):
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switch(strtolower($part)):
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case "select":
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case "from":
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case "where":
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case "limit":
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case "offset":
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$p = $part;
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$parts[$part] = array();
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break;
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case "order":
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$p = $part;
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$i = $k+1;
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if(isset($e[$i]) && strtolower($e[$i]) == "by") {
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$parts[$part] = array();
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}
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break;
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case "by":
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continue;
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default:
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$parts[$p][] = $part;
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endswitch;
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endforeach;
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foreach($parts as $k => $part) {
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$part = implode(" ",$part);
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switch($k):
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case "SELECT":
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$this->parseSelect($part);
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break;
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case "FROM":
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$this->parseFrom($part);
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break;
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case "WHERE":
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$this->addWhere($this->parseWhere($part));
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break;
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case "ORDER":
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$this->parseOrderBy($part);
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break;
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case "LIMIT":
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$this->limit = trim($part);
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break;
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case "OFFSET":
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$this->offset = trim($part);
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break;
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endswitch;
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}
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}
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/**
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* DQL SELECT PARSER
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* parses the select part of the query string
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* @param string $str
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* @return void
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*/
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private function parseSelect($str) {
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$this->aggregate = true;
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foreach(explode(",",trim($str)) as $reference) {
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$e = explode(" AS ",trim($reference));
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$f = explode("(",$e[0]);
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$a = explode(".",$f[1]);
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$field = substr(array_pop($a),0,-1);
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$reference = trim(implode(".",$a));
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$objTable = $this->load($reference);
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if(isset($e[1]))
|
||||
$s = " AS $e[1]";
|
||||
|
||||
$this->fields[]= $f[0]."(".$objTable->getTableName().".$field)$s";
|
||||
|
||||
}
|
||||
}
|
||||
/**
|
||||
* DQL FROM PARSER
|
||||
* parses the from part of the query string
|
||||
|
||||
* @param string $str
|
||||
* @return void
|
||||
*/
|
||||
private function parseFrom($str) {
|
||||
foreach(explode(",",trim($str)) as $reference) {
|
||||
$reference = trim($reference);
|
||||
$e = explode("-",$reference);
|
||||
$reference = $e[0];
|
||||
$table = $this->load($reference);
|
||||
|
||||
if(isset($e[1])) {
|
||||
switch(strtolower($e[1])):
|
||||
case "i":
|
||||
case "immediate":
|
||||
$fetchmode = Doctrine::FETCH_IMMEDIATE;
|
||||
break;
|
||||
case "b":
|
||||
case "batch":
|
||||
$fetchmode = Doctrine::FETCH_BATCH;
|
||||
break;
|
||||
case "l":
|
||||
case "lazy":
|
||||
$fetchmode = Doctrine::FETCH_LAZY;
|
||||
break;
|
||||
case "o":
|
||||
case "offset":
|
||||
$fetchmode = Doctrine::FETCH_OFFSET;
|
||||
break;
|
||||
case "lo":
|
||||
case "lazyoffset":
|
||||
$fetchmode = Doctrine::FETCH_LAZYOFFSET;
|
||||
default:
|
||||
throw new DQLException("Unknown fetchmode '$e[1]'. The availible fetchmodes are 'i', 'b' and 'l'.");
|
||||
endswitch;
|
||||
} else
|
||||
$fetchmode = $table->getAttribute(Doctrine::ATTR_FETCHMODE);
|
||||
|
||||
if( ! $this->aggregate) {
|
||||
$this->loadFields($table,$fetchmode);
|
||||
}
|
||||
}
|
||||
}
|
||||
/**
|
||||
* DQL ORDER BY PARSER
|
||||
* parses the order by part of the query string
|
||||
*
|
||||
* @param string $str
|
||||
* @return void
|
||||
*/
|
||||
private function parseOrderBy($str) {
|
||||
foreach(explode(",",trim($str)) as $r) {
|
||||
$r = trim($r);
|
||||
$e = explode(" ",$r);
|
||||
$a = explode(".",$e[0]);
|
||||
|
||||
if(count($a) > 1) {
|
||||
$field = array_pop($a);
|
||||
$reference = implode(".",$a);
|
||||
$name = end($a);
|
||||
$this->load($reference);
|
||||
$tname = $this->tnames[$name]->getTableName();
|
||||
|
||||
$r = $tname.".".$field;
|
||||
if(isset($e[1])) $r .= " ".$e[1];
|
||||
$this->orderby[] = $r;
|
||||
} else {
|
||||
$this->orderby[] = $r;
|
||||
}
|
||||
}
|
||||
}
|
||||
/**
|
||||
* DQL WHERE PARSER
|
||||
* parses the where part of the query string
|
||||
*
|
||||
*
|
||||
* @param string $str
|
||||
* @return string
|
||||
*/
|
||||
private function parseWhere($str) {
|
||||
$tmp = trim($str);
|
||||
$str = self::bracketTrim($tmp,"(",")");
|
||||
|
||||
$brackets = false;
|
||||
while($tmp != $str) {
|
||||
$brackets = true;
|
||||
$tmp = $str;
|
||||
$str = self::bracketTrim($str,"(",")");
|
||||
}
|
||||
|
||||
$parts = self::bracketExplode($str," && ","(",")");
|
||||
if(count($parts) > 1) {
|
||||
$ret = array();
|
||||
foreach($parts as $part) {
|
||||
$ret[] = $this->parseWhere($part);
|
||||
}
|
||||
$r = implode(" AND ",$ret);
|
||||
} else {
|
||||
$parts = self::bracketExplode($str," || ","(",")");
|
||||
if(count($parts) > 1) {
|
||||
$ret = array();
|
||||
foreach($parts as $part) {
|
||||
$ret[] = $this->parseWhere($part);
|
||||
}
|
||||
$r = implode(" OR ",$ret);
|
||||
} else {
|
||||
return $this->loadWhere($parts[0]);
|
||||
}
|
||||
}
|
||||
if($brackets)
|
||||
return "(".$r.")";
|
||||
else
|
||||
return $r;
|
||||
}
|
||||
/**
|
||||
* trims brackets
|
||||
*
|
||||
* @param string $str
|
||||
* @param string $e1 the first bracket, usually '('
|
||||
* @param string $e2 the second bracket, usually ')'
|
||||
*/
|
||||
public static function bracketTrim($str,$e1,$e2) {
|
||||
if(substr($str,0,1) == $e1 && substr($str,-1) == $e2)
|
||||
return substr($str,1,-1);
|
||||
else
|
||||
return $str;
|
||||
}
|
||||
/**
|
||||
* bracketExplode
|
||||
* usage:
|
||||
* $str = (age < 20 AND age > 18) AND email LIKE 'John@example.com'
|
||||
* now exploding $str with parameters $d = ' AND ', $e1 = '(' and $e2 = ')'
|
||||
* would return an array:
|
||||
* array("(age < 20 AND age > 18)", "email LIKE 'John@example.com'")
|
||||
*
|
||||
* @param string $str
|
||||
* @param string $d the delimeter which explodes the string
|
||||
* @param string $e1 the first bracket, usually '('
|
||||
* @param string $e2 the second bracket, usually ')'
|
||||
*
|
||||
*/
|
||||
public static function bracketExplode($str,$d,$e1,$e2) {
|
||||
$str = explode("$d",$str);
|
||||
$i = 0;
|
||||
$term = array();
|
||||
foreach($str as $key=>$val) {
|
||||
if (empty($term[$i])) {
|
||||
$term[$i] = trim($val);
|
||||
$s1 = substr_count($term[$i],"$e1");
|
||||
$s2 = substr_count($term[$i],"$e2");
|
||||
if($s1 == $s2) $i++;
|
||||
} else {
|
||||
$term[$i] .= "$d".trim($val);
|
||||
$c1 = substr_count($term[$i],"$e1");
|
||||
$c2 = substr_count($term[$i],"$e2");
|
||||
if($c1 == $c2) $i++;
|
||||
}
|
||||
}
|
||||
return $term;
|
||||
}
|
||||
/**
|
||||
* loadWhere
|
||||
*
|
||||
*/
|
||||
private function loadWhere($where) {
|
||||
$e = explode(" ",$where);
|
||||
$r = array_shift($e);
|
||||
$a = explode(".",$r);
|
||||
|
||||
if(count($a) > 1) {
|
||||
$field = array_pop($a);
|
||||
$operator = array_shift($e);
|
||||
$value = implode(" ",$e);
|
||||
$reference = implode(".",$a);
|
||||
$objTable = $this->session->getTable(end($a));
|
||||
$where = $objTable->getTableName().".".$field." ".$operator." ".$value;
|
||||
|
||||
if(count($a) > 1 && isset($a[1])) {
|
||||
$root = $a[0];
|
||||
$fk = $this->tnames[$root]->getForeignKey($a[1]);
|
||||
if($fk instanceof Doctrine_Association) {
|
||||
$asf = $fk->getAssociationFactory();
|
||||
switch($fk->getType()):
|
||||
case Doctrine_Relation::ONE_AGGREGATE:
|
||||
case Doctrine_Relation::ONE_COMPOSITE:
|
||||
|
||||
break;
|
||||
case Doctrine_Relation::MANY_AGGREGATE:
|
||||
case Doctrine_Relation::MANY_COMPOSITE:
|
||||
$b = array_shift($a);
|
||||
$b = array_shift($a);
|
||||
$graph = new Doctrine_DQL_Parser($this->session);
|
||||
$graph->parseQuery("FROM $b-l WHERE $where");
|
||||
$where = $this->tnames[$root]->getTableName().".".$this->tnames[$root]->getIdentifier()." IN (SELECT ".$fk->getLocal()." FROM ".$asf->getTableName()." WHERE ".$fk->getForeign()." IN (".$graph->getQuery()."))";
|
||||
break;
|
||||
endswitch;
|
||||
} else
|
||||
$this->load($reference);
|
||||
|
||||
} else
|
||||
$this->load($reference);
|
||||
}
|
||||
return $where;
|
||||
}
|
||||
/**
|
||||
* @param string $path the path of the loadable component
|
||||
* @param integer $fetchmode optional fetchmode, if not set the components default fetchmode will be used
|
||||
* @throws DQLException
|
||||
*/
|
||||
final public function load($path, $fetchmode = Doctrine::FETCH_LAZY) {
|
||||
$e = explode(".",$path);
|
||||
foreach($e as $key => $name) {
|
||||
$low = strtolower($name);
|
||||
$name = ucwords($low);
|
||||
|
||||
try {
|
||||
if($key == 0) {
|
||||
|
||||
$objTable = $this->session->getTable($name);
|
||||
if(count($e) == 1) {
|
||||
$tname = $objTable->getTableName();
|
||||
$this->from[$tname] = true;
|
||||
}
|
||||
} else {
|
||||
$fk = $objTable->getForeignKey($name);
|
||||
$tname = $objTable->getTableName();
|
||||
$next = $fk->getTable();
|
||||
$tname2 = $next->getTableName();
|
||||
|
||||
$this->connectors[$name] = $fk;
|
||||
|
||||
if($fk instanceof Doctrine_ForeignKey ||
|
||||
$fk instanceof Doctrine_LocalKey) {
|
||||
switch($fk->getType()):
|
||||
case Doctrine_Relation::ONE_AGGREGATE:
|
||||
case Doctrine_Relation::ONE_COMPOSITE:
|
||||
|
||||
$this->where[] = "(".$tname.".".$fk->getLocal()." = ".$tname2.".".$fk->getForeign().")";
|
||||
$this->from[$tname] = true;
|
||||
$this->from[$tname2] = true;
|
||||
break;
|
||||
case Doctrine_Relation::MANY_AGGREGATE:
|
||||
case Doctrine_Relation::MANY_COMPOSITE:
|
||||
$this->join[$tname] = "LEFT JOIN ".$tname2." ON ".$tname.".".$fk->getLocal()." = ".$tname2.".".$fk->getForeign();
|
||||
$this->joined[] = $tname2;
|
||||
$this->from[$tname] = true;
|
||||
break;
|
||||
endswitch;
|
||||
} elseif($fk instanceof Doctrine_Association) {
|
||||
$asf = $fk->getAssociationFactory();
|
||||
|
||||
switch($fk->getType()):
|
||||
case Doctrine_Relation::ONE_AGGREGATE:
|
||||
case Doctrine_Relation::ONE_COMPOSITE:
|
||||
|
||||
break;
|
||||
case Doctrine_Relation::MANY_AGGREGATE:
|
||||
case Doctrine_Relation::MANY_COMPOSITE:
|
||||
|
||||
//$this->addWhere("SELECT ".$fk->getLocal()." FROM ".$asf->getTableName()." WHERE ".$fk->getForeign()." IN (SELECT ".$fk->getTable()->getComponentName().")");
|
||||
$this->from[$tname] = true;
|
||||
break;
|
||||
endswitch;
|
||||
}
|
||||
|
||||
$objTable = $next;
|
||||
}
|
||||
if( ! isset($this->tnames[$name])) {
|
||||
$this->tnames[$name] = $objTable;
|
||||
}
|
||||
|
||||
} catch(Exception $e) {
|
||||
throw new DQLException($e->getMessage(),$e->getCode());
|
||||
}
|
||||
}
|
||||
return $objTable;
|
||||
}
|
||||
}
|
||||
|
||||
?>
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user