1 files changed, 126 insertions, 0 deletions
diff --git a/library/Icinga/Web/Session/Session.php b/library/Icinga/Web/Session/Session.php
new file mode 100644
index 0000000..e73e9b4
--- /dev/null
+++ b/library/Icinga/Web/Session/Session.php
@@ -0,0 +1,126 @@
+<?php
+/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Web\Session;
+
+use Icinga\Exception\NotImplementedError;
+
+/**
+ * Base class for handling sessions
+ */
+abstract class Session extends SessionNamespace
+{
+    /**
+     * Container for session namespaces
+     *
+     * @var array
+     */
+    protected $namespaces = array();
+
+    /**
+     * The identifiers of all namespaces removed from this session
+     *
+     * @var array
+     */
+    protected $removedNamespaces = array();
+
+    /**
+     * Read all values from the underlying session implementation
+     */
+    abstract public function read();
+
+    /**
+     * Persists changes to the underlying session implementation
+     */
+    public function write()
+    {
+        throw new NotImplementedError('You are required to implement write() in your session implementation');
+    }
+
+    /**
+     * Return whether a session exists
+     *
+     * @return  bool
+     */
+    abstract public function exists();
+
+    /**
+     * Purge session
+     */
+    abstract public function purge();
+
+    /**
+     * Assign a new session id to this session.
+     */
+    abstract public function refreshId();
+
+    /**
+     * Return the id of this session
+     *
+     * @return  string
+     */
+    abstract public function getId();
+
+    /**
+     * Get or create a new session namespace
+     *
+     * @param   string      $identifier     The namespace's identifier
+     *
+     * @return  SessionNamespace
+     */
+    public function getNamespace($identifier)
+    {
+        if (!isset($this->namespaces[$identifier])) {
+            if (in_array($identifier, $this->removedNamespaces, true)) {
+                unset($this->removedNamespaces[array_search($identifier, $this->removedNamespaces, true)]);
+            }
+
+            $this->namespaces[$identifier] = new SessionNamespace();
+        }
+
+        return $this->namespaces[$identifier];
+    }
+
+    /**
+     * Return whether the given session namespace exists
+     *
+     * @param   string      $identifier     The namespace's identifier to check
+     *
+     * @return  bool
+     */
+    public function hasNamespace($identifier)
+    {
+        return isset($this->namespaces[$identifier]);
+    }
+
+    /**
+     * Remove the given session namespace
+     *
+     * @param   string      $identifier     The identifier of the namespace to remove
+     */
+    public function removeNamespace($identifier)
+    {
+        unset($this->namespaces[$identifier]);
+        $this->removedNamespaces[] = $identifier;
+    }
+
+    /**
+     * Return whether the session has changed
+     *
+     * @return  bool
+     */
+    public function hasChanged()
+    {
+        return parent::hasChanged() || false === empty($this->namespaces) || false === empty($this->removedNamespaces);
+    }
+
+    /**
+     * Clear all values and namespaces from the session cache
+     */
+    public function clear()
+    {
+        parent::clear();
+        $this->namespaces = array();
+        $this->removedNamespaces = array();
+    }
+}