From 2830e7d1be0f69c2354d87deb57146f0ab46b4d0 Mon Sep 17 00:00:00 2001
From: Trismegiste <florent.g@allopneus.com>
Date: Sat, 11 May 2013 19:33:36 +0200
Subject: [PATCH 1/3] first, the todos for fixing the pattern

---
 Adapter/Adapter.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Adapter/Adapter.php b/Adapter/Adapter.php
index 3ecb4ed..85b9385 100644
--- a/Adapter/Adapter.php
+++ b/Adapter/Adapter.php
@@ -21,6 +21,10 @@ interface DatabaseAdapter
 
 class MySQL implements DatabaseAdapter
 {
+    /**
+     * The Adapter need to wrap the Adaptee in the constructor
+     * much like Decorator does. Nothing is adapted here...
+     */
     public function getTables()
     {
         return $this->select('SHOW TABLES');

From 9278f295b009f562e185da5eef89a80508953eeb Mon Sep 17 00:00:00 2001
From: Trismegiste <florent.g@allopneus.com>
Date: Sat, 11 May 2013 20:54:21 +0200
Subject: [PATCH 2/3] more real example

---
 Adapter/Adapter.php            | 41 ----------------------------------
 Adapter/Book.php               | 25 +++++++++++++++++++++
 Adapter/ElecBookAdapter.php    | 41 ++++++++++++++++++++++++++++++++++
 Adapter/ElecBookInterface.php  | 18 +++++++++++++++
 Adapter/Kindle.php             | 27 ++++++++++++++++++++++
 Adapter/PaperBookInterface.php | 18 +++++++++++++++
 6 files changed, 129 insertions(+), 41 deletions(-)
 delete mode 100644 Adapter/Adapter.php
 create mode 100644 Adapter/Book.php
 create mode 100644 Adapter/ElecBookAdapter.php
 create mode 100644 Adapter/ElecBookInterface.php
 create mode 100644 Adapter/Kindle.php
 create mode 100644 Adapter/PaperBookInterface.php

diff --git a/Adapter/Adapter.php b/Adapter/Adapter.php
deleted file mode 100644
index 85b9385..0000000
--- a/Adapter/Adapter.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-namespace DesignPatterns;
-
-/**
- * adapter pattern
- *
- * Purpose:
- * to link two systems, that have different interfaces. An adapter defines interfaces that are equal for all linked
- * systems and wrap functionality
- *
- * Examples:
- * - different databases have the same interface to communicate although the underlying systems act differently
- * 
- * this is a VERY basic example which won't work at all!
- */
-interface DatabaseAdapter
-{
-    public function getTables();
-}
-
-class MySQL implements DatabaseAdapter
-{
-    /**
-     * The Adapter need to wrap the Adaptee in the constructor
-     * much like Decorator does. Nothing is adapted here...
-     */
-    public function getTables()
-    {
-        return $this->select('SHOW TABLES');
-    }
-}
-
-class SQLite implements DatabaseAdapter
-{
-    public function getTables()
-    {
-        return system('sqlite --list-tables');
-    }
-}
-
diff --git a/Adapter/Book.php b/Adapter/Book.php
new file mode 100644
index 0000000..dcd3b0f
--- /dev/null
+++ b/Adapter/Book.php
@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Adapter;
+
+/**
+ * Book is a concrete and standard paper book
+ */
+class Book implements PaperBookInterface
+{
+
+    public function open()
+    {
+        
+    }
+
+    public function turnPage()
+    {
+        
+    }
+
+}
\ No newline at end of file
diff --git a/Adapter/ElecBookAdapter.php b/Adapter/ElecBookAdapter.php
new file mode 100644
index 0000000..49670af
--- /dev/null
+++ b/Adapter/ElecBookAdapter.php
@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Adapter;
+
+/**
+ * ElecBookAdapter is an adapter to fit an e-book like a paper book
+ * 
+ * This is the adapter here. Notice it implemennts PaperBookInterface,
+ * therefore you don't have to change the code of the client which using paper book.
+ */
+class ElecBookAdapter implements PaperBookInterface
+{
+
+    protected $eBook;
+
+    /**
+     * Notice the constructor, it "wraps" an electronic book
+     */
+    public function __construct(ElecBookInterface $ebook)
+    {
+        $this->eBook = $ebook;
+    }
+
+    /**
+     * This cass makes the proper translation from one interface to another
+     */
+    public function open()
+    {
+        $this->eBook->pressStart();
+    }
+
+    public function turnPage()
+    {
+        $this->eBook->pressNext();
+    }
+
+}
\ No newline at end of file
diff --git a/Adapter/ElecBookInterface.php b/Adapter/ElecBookInterface.php
new file mode 100644
index 0000000..b16bd35
--- /dev/null
+++ b/Adapter/ElecBookInterface.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Adapter;
+
+/**
+ * ElecBookInterface is a contract for an electronic book
+ */
+interface ElecBookInterface
+{
+
+    function pressNext();
+
+    function pressStart();
+}
\ No newline at end of file
diff --git a/Adapter/Kindle.php b/Adapter/Kindle.php
new file mode 100644
index 0000000..c5134c8
--- /dev/null
+++ b/Adapter/Kindle.php
@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Adapter;
+
+/**
+ * Kindle is a concrete electronic book
+ *
+ * @author flo
+ */
+class Kindle implements ElecBookInterface
+{
+
+    public function pressNext()
+    {
+        
+    }
+
+    public function pressStart()
+    {
+        
+    }
+
+}
\ No newline at end of file
diff --git a/Adapter/PaperBookInterface.php b/Adapter/PaperBookInterface.php
new file mode 100644
index 0000000..282ca09
--- /dev/null
+++ b/Adapter/PaperBookInterface.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Adapter;
+
+/**
+ * PaperBookInterface is a contract for a book
+ */
+interface PaperBookInterface
+{
+
+    function turnPage();
+
+    function open();
+}
\ No newline at end of file

From 20433dd8a57e2a82c61069abc9c5ebfe4bfeda5d Mon Sep 17 00:00:00 2001
From: Trismegiste <florent.g@allopneus.com>
Date: Sat, 11 May 2013 20:56:47 +0200
Subject: [PATCH 3/3] the test is the client

---
 Tests/Adapter/AdapterTest.php | 42 +++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Tests/Adapter/AdapterTest.php

diff --git a/Tests/Adapter/AdapterTest.php b/Tests/Adapter/AdapterTest.php
new file mode 100644
index 0000000..9dda0eb
--- /dev/null
+++ b/Tests/Adapter/AdapterTest.php
@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Tests\Adapter;
+
+use DesignPatterns\Adapter\ElecBookAdapter;
+use DesignPatterns\Adapter\Kindle;
+use DesignPatterns\Adapter\PaperBookInterface;
+use DesignPatterns\Adapter\Book;
+
+/**
+ * AdapterTest shows the use of an adapted e-book that behave like a book
+ * You don't have to change the code of your client
+ */
+class AdapterTest extends \PHPUnit_Framework_TestCase
+{
+
+    public function getBook()
+    {
+        return array(
+            array(new Book()),
+            // we build a "wrapped" electronic book in the adapter
+            array(new ElecBookAdapter(new Kindle()))
+        );
+    }
+
+    /**
+     * This client only knows paper book but surprise, surprise, the second book
+     * is in fact an electronic book.
+     * 
+     * @dataProvider getBook
+     */
+    public function test_I_am_an_old_Client(PaperBookInterface $book)
+    {
+        $book->open();
+        $book->turnPage();
+    }
+
+}
\ No newline at end of file