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Doctrine/IdentityMap.class.php

-<?php
-abstract class Doctrine_Creator {
-    protected $_table;
-    /**
-     * constructor
-     *
-     * @param Doctrine_Table $table
-     */
-    public function __construct(Doctrine_Table $table) {
-        $this->_table = $_table;
-    }
-    
-
-    abstract public function get();
-}
-class Doctrine_IdentityMap {
-    private $identityMap = array();
-
-    /**
-     * first checks if record exists in identityMap, if not
-     * returns a new record
-     *
-     * @return Doctrine_Record
-     */
-    public function get() {
-        $key = $this->getIdentifier();
-
-        if( ! is_array($key))
-            $key = array($key);
-
-
-        foreach($key as $k) {
-            if( ! isset($this->data[$k]))
-                throw new Doctrine_Exception("No primary key found");
-
-            $id[] = $this->data[$k];
-        }
-        $id = implode(' ', $id);
-
-        if(isset($this->identityMap[$id]))
-            $record = $this->identityMap[$id];
-        else {
-            $record = new $this->name($this);
-            $this->identityMap[$id] = $record;
-        }
-        $this->data = array();
-
-        return $record;
-    }
-}
-?>