move all exception declaration to their own file

exceptions.php

@@ -0,0 +1,49 @@
+<?php
+
+class WebException extends Exception
+{
+    private $excname;
+
+    /**
+     * @param string $name
+     * @param string $reason
+     * @param int $code
+     */
+    function __construct($name, $reason, $code)
+    {
+        $this->excname = $name;
+        parent::__construct($reason, $code);
+    }
+
+    public function getName()
+    {
+        return $this->excname;
+    }
+}
+
+class SqlException extends Exception
+{
+    private $query;
+
+    public function __construct($message = "Sql Error", $query = "")
+    {
+        $this->query = $query;
+        parent::__construct($message, 0);
+    }
+
+    public function getSqlError()
+    {
+        return $this->getMessage().' while executing: '.$this->query;
+    }
+}
+
+class BookNotFoundException extends WebException {
+    public function __construct($code) {
+        parent::__construct('BookNotFound', "The book with code $code was not found", -404);
+    }
+}
+
+/**
+ * Exception raised when an invalid attribute name is accessed
+ */
+class InvalidAttributeException extends Exception { }

global.php

@@ -1,4 +1,5 @@
 <?php
 
+require_once('exceptions.php');
 require_once('configuration.php');
 require_once('lib/Connection.php');

lib/AudioBook.php

@@ -2,12 +2,6 @@
 
 require_once('DbMapping.php');
 
-class BookNotFoundException extends WebException {
-    public function __construct($code) {
-        parent::__construct('BookNotFound', "The book with code $code was not found", -404);
-    }
-}
-
 /**
  * AudioBook is mapped on a Notice from NetBiblio
  *

lib/Connection.php

@@ -52,22 +52,6 @@ class Connection
     final private function __clone() {}
 }
 
-class SqlException extends Exception
-{
-    private $query;
-
-    public function __construct($message = "Sql Error", $query = "")
-    {
-        $this->query = $query;
-        parent::__construct($message, 0);
-    }
-
-    public function getSqlError()
-    {
-        return $this->getMessage().' while executing: '.$this->query;
-    }
-}
-
 class OdbcResultSet implements Iterator, ArrayAccess
 {
     public $length;

lib/DbMapping.php

@@ -120,9 +120,3 @@ abstract class DbMapping
         return $result;
     }
 }
-
-
-/**
- * Exception raised when an invalid attribute name is accessed
- */
-class InvalidAttributeException extends Exception { }

mobile.webservice.php

@@ -1,26 +1,5 @@
 <?php
 
-class WebException extends Exception
-{
-    private $excname;
-
-    /**
-     * @param string $name
-     * @param string $reason
-     * @param int $code
-     */
-    function __construct($name, $reason, $code)
-    {
-        $this->excname = $name;
-        parent::__construct($reason, $code);
-    }
-
-    public function getName()
-    {
-        return $this->excname;
-    }
-}
-
 abstract class WebService
 {
     private $func = null;