Added DBA cache adapter

library/Zend/Cache/Storage/Adapter/DbaIterator.php

@@ -0,0 +1,211 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to [email protected] so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Cache
+ * @subpackage Storage
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+namespace Zend\Cache\Storage\Adapter;
+
+use Zend\Cache\Exception,
+    Zend\Cache\Storage\IterableInterface,
+    Zend\Cache\Storage\IteratorInterface;
+
+/**
+ * @category   Zend
+ * @package    Zend_Cache
+ * @subpackage Storage
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class DbaIterator implements IteratorInterface
+{
+    /**
+     * The apc storage intance
+     *
+     * @var Apc
+     */
+    protected $storage;
+
+    /**
+     * The iterator mode
+     *
+     * @var int
+     */
+    protected $mode = IteratorInterface::CURRENT_AS_KEY;
+
+    /**
+     * The dba resource handle
+     *
+     * @var resource
+     */
+    protected $handle;
+
+    /**
+     * The length of the namespace prefix
+     *
+     * @var int
+     */
+    protected $prefixLength;
+
+    /**
+     * The current internal key
+     *
+     * @var string|boolean
+     */
+    protected $currentInternalKey;
+
+    /**
+     * Constructor
+     *
+     * @param Dba      $storage
+     * @param resource $handle
+     * @param string   $prefix
+     * @return void
+     */
+    public function __construct(Dba $storage, $handle, $prefix)
+    {
+        $this->storage      = $storage;
+        $this->handle       = $handle;
+        $this->prefixLength = strlen($prefix);
+
+        $this->rewind();
+    }
+
+    /**
+     * Get storage instance
+     *
+     * @return Dba
+     */
+    public function getStorage()
+    {
+        return $this->storage;
+    }
+
+    /**
+     * Get iterator mode
+     *
+     * @return int Value of IteratorInterface::CURRENT_AS_*
+     */
+    public function getMode()
+    {
+        return $this->mode;
+    }
+
+    /**
+     * Set iterator mode
+     *
+     * @param int $mode
+     * @return ApcIterator Fluent interface
+     */
+    public function setMode($mode)
+    {
+        $this->mode = (int) $mode;
+        return $this;
+    }
+
+    /* Iterator */
+
+    /**
+     * Get current key, value or metadata.
+     *
+     * @return mixed
+     * @throws Exception\RuntimeException
+     */
+    public function current()
+    {
+        if ($this->mode == IteratorInterface::CURRENT_AS_SELF) {
+            return $this;
+        }
+
+        $key = $this->key();
+
+        if ($this->mode == IteratorInterface::CURRENT_AS_VALUE) {
+            return $this->storage->getItem($key);
+        } elseif ($this->mode == IteratorInterface::CURRENT_AS_METADATA) {
+            return $this->storage->getMetadata($key);
+        }
+
+        return $key;
+    }
+
+    /**
+     * Get current key
+     *
+     * @return string
+     * @throws Exception\RuntimeException
+     */
+    public function key()
+    {
+        if ($this->currentInternalKey === false) {
+            throw new Exception\RuntimeException("Iterater is on an invalid state");
+        }
+
+        // remove namespace prefix
+        return substr($this->currentInternalKey, $this->prefixLength);
+    }
+
+    /**
+     * Move forward to next element
+     *
+     * @return void
+     * @throws Exception\RuntimeException
+     */
+    public function next()
+    {
+        if ($this->currentInternalKey === false) {
+            throw new Exception\RuntimeException("Iterater is on an invalid state");
+        }
+
+        $this->currentInternalKey = dba_nextkey($this->handle);
+
+        // Workaround for PHP-Bug #62492
+        if ($this->currentInternalKey === null) {
+            $this->currentInternalKey = false;
+        }
+    }
+
+    /**
+     * Checks if current position is valid
+     *
+     * @return boolean
+     */
+    public function valid()
+    {
+        return ($this->currentInternalKey !== false);
+    }
+
+    /**
+     * Rewind the Iterator to the first element.
+     *
+     * @return void
+     * @throws Exception\RuntimeException
+     */
+    public function rewind()
+    {
+        if ($this->currentInternalKey === false) {
+            throw new Exception\RuntimeException("Iterater is on an invalid state");
+        }
+
+        $this->currentInternalKey = dba_firstkey($this->handle);
+
+        // Workaround for PHP-Bug #62492
+        if ($this->currentInternalKey === null) {
+            $this->currentInternalKey = false;
+        }
+    }
+}

library/Zend/Cache/Storage/Adapter/DbaOptions.php

@@ -0,0 +1,147 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to [email protected] so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Cache
+ * @subpackage Storage
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+namespace Zend\Cache\Storage\Adapter;
+
+use Zend\Cache\Exception;
+
+/**
+ * These are options specific to the APC adapter
+ *
+ * @category   Zend
+ * @package    Zend_Cache
+ * @subpackage Storage
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class DbaOptions extends AdapterOptions
+{
+    /**
+     * Namespace separator
+     *
+     * @var string
+     */
+    protected $namespaceSeparator = ':';
+
+    /**
+     * Pathname to the database file
+     *
+     * @var string
+     */
+    protected $pathname = '';
+
+    /**
+     * The mode to open the database
+     *
+     * @var string
+     */
+    protected $mode = 'c';
+
+    /**
+     * The name of the handler which shall be used for accessing the database.
+     *
+     * @var string
+     */
+    protected $handler = 'flatfile';
+
+    /**
+     * Set namespace separator
+     *
+     * @param  string $separator
+     * @return DbaOptions
+     */
+    public function setNamespaceSeparator($separator)
+    {
+        $separator = (string) $separator;
+        $this->triggerOptionEvent('namespace_separator', $separator);
+        $this->namespaceSeparator = $separator;
+        return $this;
+    }
+
+    /**
+     * Get namespace separator
+     *
+     * @return string
+     */
+    public function getNamespaceSeparator()
+    {
+        return $this->namespaceSeparator;
+    }
+
+    /**
+     * Set pathname to database file
+     *
+     * @param string $pathname
+     * @return DbaOptions
+     */
+    public function setPathname($pathname)
+    {
+        $this->pathname = (string) $pathname;
+        $this->triggerOptionEvent('pathname', $pathname);
+        return $this;
+    }
+
+    /**
+     * Get pathname to database file
+     *
+     * @return string
+     */
+    public function getPathname()
+    {
+        return $this->pathname;
+    }
+
+    /**
+     *
+     *
+     * @param unknown_type $mode
+     * @return \Zend\Cache\Storage\Adapter\DbaOptions
+     */
+    public function setMode($mode)
+    {
+        $this->mode = (string) $mode;
+        $this->triggerOptionEvent('mode', $mode);
+        return $this;
+    }
+
+    public function getMode()
+    {
+        return $this->mode;
+    }
+
+    public function setHandler($handler)
+    {
+        $handler = (string) $handler;
+
+        if (!function_exists('dba_handlers') || !in_array($handler, dba_handlers())) {
+            throw new Exception\ExtensionNotLoadedException("DBA-Handler '{$handler}' not supported");
+        }
+
+        $this->triggerOptionEvent('handler', $handler);
+        $this->handler = $handler;
+        return $this;
+    }
+
+    public function getHandler()
+    {
+        return $this->handler;
+    }
+}