From cfa429df0fe08c300c15d481e7c5564b35426437 Mon Sep 17 00:00:00 2001
From: Dominique Fournier <dominique@fournier38.fr>
Date: Fri, 21 Aug 2015 11:43:18 +0000
Subject: [PATCH] dblayer : add the hookpreread and the hookpostread

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@2267 bf3deb0d-5f1a-0410-827f-c0cc1f45334c
---
 dblayer.php | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/dblayer.php b/dblayer.php
index 1643c27..8acd339 100644
--- a/dblayer.php
+++ b/dblayer.php
@@ -691,6 +691,7 @@ class dblayer
       foreach ($foreignSelect as $s)
         $foreignSelectCols[] = $s[0];
     }
+    $this->hookpreread ($select, $display, $order, $whereOr, $foreignSelect);
     $req = "SELECT $this->sep";
     $req .= implode ("$this->sep,$this->sep", $display);
     $req .= "$this->sep ";
@@ -799,6 +800,7 @@ class dblayer
     $res = array ();
     while ($d = $st->fetch (PDO::FETCH_ASSOC))
       $res[] = $d;
+    $res = $this->hookpostread ($res);
     return $res;
   }
 
@@ -1317,6 +1319,35 @@ class dblayer
     return self::$instance[$this->dsn]->rollback ();
   }
 
+  /** Hook preread
+      This hook is run before selecting the data in the database, after the
+      verification
+      @param array|null &$select Rows to select with
+         $select = array (array ($key, $val, $operator), ...)
+         $key=>column, $val=>value to found, $operator=>'LIKE', =...
+      @param array|null &$display Columns displayed
+         $display = array ($col1, $col2...);
+      @param array|null &$order Sort the columns by orientation
+         $order = array (array ($key, $orientation), ...)
+         $key=>column, $orientation=ASC/DESC
+      @param bool|null &$whereOr The WHERE parameters are separated by OR
+                                 instead of AND
+      @param array|null &$foreignSelect Add a filter on foreign keys */
+  public function hookpreread (&$select, &$display, &$order, &$whereOr,
+                               &$foreignSelect)
+  {
+
+  }
+
+  /** Hook postread 
+      This hook is run after selecting the data.
+      @param array $data the data selected by the select
+      @return array The data modified by the hook */
+  public function hookpostread ($data)
+  {
+    return $data;
+  }
+
   /** Hook preinsert
       This hook is run before inserting a new data in the database, after the
       verification