Preliminary support for database views

Doctrine/Query.php

@@ -33,6 +33,11 @@ class Doctrine_Query extends Doctrine_Access {
      * @var Doctrine_Session $session       Doctrine_Session object
      */
     private $session;
+    /**
+     * @var Doctrine_View $view             Doctrine_View object
+     */
+    private $view;
+    
 
     private $inheritanceApplied = false;
 
@@ -85,6 +90,32 @@ class Doctrine_Query extends Doctrine_Access {
     public function __construct(Doctrine_Session $session) {
         $this->session = $session;
     }
+    /**
+     * @return Doctrine_Session
+     */
+    public function getSession() {
+        return $this->session;
+    }
+    /**
+     * setView
+     * sets a database view this query object uses
+     * this method should only be called internally by doctrine
+     *
+     * @param Doctrine_View $view       database view
+     * @return void
+     */
+    public function setView(Doctrine_View $view) {
+        $this->view = $view;
+    }
+    /**
+     * getView
+     *
+     * @return Doctrine_View
+     */
+    public function getView() {
+        return $this->view;
+    }
+
     /**
      * clear
      * resets all the variables
@@ -394,12 +425,17 @@ class Doctrine_Query extends Doctrine_Access {
         $this->data = array();
         $this->collections = array();
         
+        if( ! $this->view)
+            $query = $this->getQuery();
+        else
+            $query = $this->view->getSelectSql();
+
         switch(count($this->tables)):
             case 0:
                 throw new DQLException();
             break;
             case 1:
-                $query = $this->getQuery();
+
 
                 $keys  = array_keys($this->tables);
 

Doctrine/View.php

+<?php
+/**
+ * Doctrine_View
+ *
+ * this class represents a database view
+ */
+class Doctrine_View {
+    /**
+     * SQL DROP constant
+     */
+    const DROP   = 'DROP VIEW %s';
+    /**
+     * SQL CREATE constant
+     */
+    const CREATE = 'CREATE VIEW %s AS %s';
+    /**
+     * SQL SELECT constant
+     */
+    const SELECT = 'SELECT * FROM %s';
+
+
+    /**
+     * @var string $name
+     */
+    protected $name;
+    /**
+     * @var Doctrine_Query $query
+     */
+    protected $query;
+    /**
+     * @var PDO $dbh
+     */
+    protected $dbh;
+
+    /**
+     * constructor
+     *
+     * @param Doctrine_Query $query
+     */
+    public function __construct(Doctrine_Query $query) {
+        $this->name  = get_class($this);
+        $this->query = $query;
+        $this->query->setView($this);
+        $this->dbh   = $query->getSession()->getDBH();
+    }
+    /**
+     * simple get method for getting 
+     * the associated query object
+     *
+     * @return Doctrine_Query
+     */
+    public function getQuery() {
+        return $this->query;
+    }
+    /**
+     * returns the name of this view
+     *
+     * @return string
+     */
+    public function getName() {
+        return $this->name;
+    }
+    /**
+     * returns the database handler
+     *
+     * @return PDO
+     */
+    public function getDBH() {
+        return $this->dbh;
+    }
+    /**
+     * creates this view
+     *
+     * @return void
+     */
+    public function create() {
+        $sql = sprintf(self::CREATE, $this->name, $this->query->getQuery());
+        $this->dbh->query($sql);
+    }
+    /**
+     * drops this view
+     *
+     * @return void
+     */
+    public function drop() {
+        $this->dbh->query(sprintf(self::DROP, $this->name));
+    }
+    /**
+     * executes the view
+     * 
+     * @return Doctrine_Collection
+     */
+    public function execute() {
+        return $this->query->execute();
+    }
+    /**
+     * @return string
+     */
+    public function getSelectSql() {
+        return sprintf(self::SELECT, $this->name);
+    }
+}
+?>

tests/CacheQuerySqliteTestCase.php

+<?php
+require_once("UnitTestCase.php");
+
+class Doctrine_Cache_Query_SqliteTestCase extends Doctrine_UnitTestCase {
+    public function setUp() {
+        parent::setUp();
+        $this->manager->setAttribute(Doctrine::ATTR_CACHE,Doctrine::CACHE_NONE);
+        $dir = $this->session->getAttribute(Doctrine::ATTR_CACHE_DIR);
+
+        if(file_exists($dir.DIRECTORY_SEPARATOR."stats.cache"))
+            unlink($dir.DIRECTORY_SEPARATOR."stats.cache");
+
+        $this->cache = new Doctrine_Cache_Query_Sqlite($this->objTable);
+        $this->cache->deleteAll();
+    }
+    public function testConstructor() {
+                                      	
+    }
+}
+?>

tests/ViewTestCase.php

+<?php
+class MyView extends Doctrine_View { }
+
+class Doctrine_ViewTestCase extends Doctrine_UnitTestCase {
+    public function testCreateView() {
+        $query = new Doctrine_Query($this->session);
+        $query->from('User');
+
+        $view = new MyView($query);
+
+        $this->assertEqual($view->getName(), 'MyView');
+        $this->assertEqual($view->getQuery(), $query);
+        $this->assertEqual($view, $query->getView());
+        $this->assertTrue($view->getDBH() instanceof PDO);
+
+        $success = true;
+
+        try {
+            $view->create();
+        } catch(Exception $e) {
+            $success = false;
+        }
+        $this->assertTrue($success);
+
+        $users = $view->execute();
+        $count = $this->dbh->count();
+        $this->assertTrue($users instanceof Doctrine_Collection);
+        $this->assertEqual($users->count(), 8);
+        $this->assertEqual($users[0]->name, 'zYne');
+        $this->assertEqual($users[0]->getState(), Doctrine_Record::STATE_CLEAN);
+        $this->assertEqual($count, $this->dbh->count());
+
+        $success = true;
+        try {
+            $view->drop();
+        } catch(Exception $e) {
+            $success = false;
+        }
+        $this->assertTrue($success);
+
+
+    }
+}
+?>

tests/run.php

@@ -17,6 +17,8 @@ require_once("PessimisticLockingTestCase.php");
 require_once("CacheSqliteTestCase.php");
 require_once("CollectionOffsetTestCase.php");
 require_once("QueryTestCase.php");
+require_once("CacheQuerySqliteTestCase.php");
+require_once("ViewTestCase.php");
 
 error_reporting(E_ALL);
 
@@ -48,7 +50,9 @@ $test->addTestCase(new Doctrine_PessimisticLockingTestCase());
 
 $test->addTestCase(new Doctrine_QueryTestCase());
 
+$test->addTestCase(new Doctrine_ViewTestCase());
 
+//$test->addTestCase(new Doctrine_Cache_Query_SqliteTestCase());
 //$test->addTestCase(new Doctrine_Cache_FileTestCase());
 //$test->addTestCase(new Doctrine_Cache_SqliteTestCase());