renaming manual files

manual/codes/Basic Components - Db - Using event listeners.php

+<?php
+
+// using PDO dsn for connecting sqlite memory table
+
+$dbh = Doctrine_Db::getConnection('sqlite::memory:');
+
+class MyLogger extends Doctrine_Db_EventListener {
+    public function onPreQuery(Doctrine_Db_Event $event) {
+        print "database is going to be queried!";
+    }
+    public function onQuery(Doctrine_Db_Event $event) {
+        print "executed: " . $event->getQuery();
+    }
+}
+
+$dbh->setListener(new MyLogger());
+
+$dbh->query("SELECT * FROM foo"); 
+// prints:
+// database is going to be queried
+// executed: SELECT * FROM foo
+
+
+class MyLogger2 extends Doctrine_Overloadable {
+    public function __call($m, $a) {
+        print $m." called!";
+    }
+}
+
+$dbh->setListener(new MyLogger2());
+
+$dbh->exec("DELETE FROM foo");
+// prints:
+// onPreExec called!
+// onExec called!
+?>