Fix for DBAL-442

lib/Doctrine/DBAL/Query/QueryBuilder.php

@@ -946,35 +946,22 @@ class QueryBuilder
         $query = 'SELECT ' . implode(', ', $this->sqlParts['select']) . ' FROM ';
 
         $fromClauses = array();
-        $joinsPending = true;
-        $joinAliases = array();
-        
+        $knownAliases = array();
+
         // Loop through all FROM clauses
         foreach ($this->sqlParts['from'] as $from) {
-            $fromClause = $from['table'] . ' ' . $from['alias'];
-
-            if ($joinsPending && isset($this->sqlParts['join'][$from['alias']])) {
-                foreach ($this->sqlParts['join'] as $joins) {
-                    foreach ($joins as $join) {
-                        $fromClause .= ' ' . strtoupper($join['joinType'])
-                                     . ' JOIN ' . $join['joinTable'] . ' ' . $join['joinAlias']
-                                     . ' ON ' . ((string) $join['joinCondition']);
-                        $joinAliases[$join['joinAlias']] = true;
-                    }
-                }
-                $joinsPending = false;
-            }
-            
+            $knownAliases[$from['alias']] = true;
+            $fromClause = $from['table'] . ' ' . $from['alias']
+                . $this->getSQLForJoins($from['alias'], $knownAliases);
+
             $fromClauses[$from['alias']] = $fromClause;
         }
 
-        // loop through all JOIN clauses for validation purpose
-        $knownAliases = array_merge($fromClauses,$joinAliases);
-        foreach ($this->sqlParts['join'] as $fromAlias => $joins) {
-            if ( ! isset($knownAliases[$fromAlias]) ) {
-                throw QueryException::unknownAlias($fromAlias, array_keys($knownAliases));
-            }
-        }
+        foreach ($this->sqlParts['join'] as $fromAlias => $joins) {
+            if ( ! isset($knownAliases[$fromAlias]) ) {
+                throw QueryException::unknownAlias($fromAlias, array_keys($knownAliases));
+            }
+        }
         
         $query .= implode(', ', $fromClauses)
                 . ($this->sqlParts['where'] !== null ? ' WHERE ' . ((string) $this->sqlParts['where']) : '')
@@ -1091,4 +1078,22 @@ class QueryBuilder
         $this->setParameter($this->boundCounter, $value, $type);
         return "?";
     }
+
+    private function getSQLForJoins($fromAlias, array &$knownAliases)
+    {
+        $sql = '';
+
+        if (isset($this->sqlParts['join'][$fromAlias])) {
+            foreach ($this->sqlParts['join'][$fromAlias] as $join) {
+                $sql .= ' ' . strtoupper($join['joinType'])
+                      . ' JOIN ' . $join['joinTable'] . ' ' . $join['joinAlias']
+                      . ' ON ' . ((string) $join['joinCondition']);
+                $knownAliases[$join['joinAlias']] = true;
+
+                $sql .= $this->getSQLForJoins($join['joinAlias'], $knownAliases);
+            }
+        }
+
+        return $sql;
+    }
 }

tests/Doctrine/Tests/DBAL/Query/QueryBuilderTest.php

@@ -563,7 +563,7 @@ class QueryBuilderTest extends \Doctrine\Tests\DbalTestCase
             ->innerJoin('nt', 'node', 'n', 'nt.node = n.id')
             ->where('nt.lang = :lang AND n.deleted != 1');
 
-        $this->setExpectedException('Doctrine\DBAL\Query\QueryException', "The given alias 'invalid' is not part of any FROM or JOIN clause table. The currently registered aliases are: news, nv, nt, n.");
+        $this->setExpectedException('Doctrine\DBAL\Query\QueryException', "The given alias 'invalid' is not part of any FROM or JOIN clause table. The currently registered aliases are: news, nv.");
         $this->assertEquals('', $qb->getSQL());
     }
 
@@ -584,4 +584,22 @@ class QueryBuilderTest extends \Doctrine\Tests\DbalTestCase
 
         $this->assertEquals("SELECT COUNT(DISTINCT news.id) FROM newspages news INNER JOIN nodeversion nv ON nv.refId = news.id AND nv.refEntityname='Entity\\News' INNER JOIN nodetranslation nt ON nv.nodetranslation = nt.id INNER JOIN node n ON nt.node = n.id WHERE (nt.lang = ?) AND (n.deleted = 0)", $qb->getSQL());
     }
+
+    /**
+     * @group DBAL-442
+     */
+    public function testSelectWithMultipleFromAndJoins()
+    {
+        $qb = new QueryBuilder($this->conn);
+
+        $qb->select('DISTINCT u.id')
+            ->from('users', 'u')
+            ->from('articles', 'a')
+            ->innerJoin('u', 'permissions', 'p', 'p.user_id = u.id')
+            ->innerJoin('a', 'comments', 'c', 'c.article_id = a.id')
+            ->where('u.id = a.user_id')
+            ->andWhere('p.read = 1');
+
+        $this->assertEquals('SELECT DISTINCT u.id FROM users u INNER JOIN permissions p ON p.user_id = u.id, articles a INNER JOIN comments c ON c.article_id = a.id WHERE (u.id = a.user_id) AND (p.read = 1)', $qb->getSQL());
+    }
 }
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