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-rw-r--r--framework/Web/UI/TSessionPageStatePersister.php260
1 files changed, 130 insertions, 130 deletions
diff --git a/framework/Web/UI/TSessionPageStatePersister.php b/framework/Web/UI/TSessionPageStatePersister.php
index 4c2537df..a6d26f7a 100644
--- a/framework/Web/UI/TSessionPageStatePersister.php
+++ b/framework/Web/UI/TSessionPageStatePersister.php
@@ -1,131 +1,131 @@
-<?php
-/**
- * TSessionPageStatePersister class file
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @link http://www.pradosoft.com/
+<?php
+/**
+ * TSessionPageStatePersister class file
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
* @copyright Copyright &copy; 2005-2012 PradoSoft
- * @license http://www.pradosoft.com/license/
- * @version $Id$
- * @package System.Web.UI
- */
-
-/**
- * TSessionPageStatePersister class
- *
- * TSessionPageStatePersister implements a page state persistent method based on
- * sessions. Page state are stored in user sessions and therefore, this persister
- * requires session to be started and available.
- *
- * TSessionPageStatePersister keeps limited number of history states in session,
- * mainly to preserve the precious server storage. The number is specified
- * by {@link setHistorySize HistorySize}, which defaults to 10.
- *
- * There are a couple of ways to use TSessionPageStatePersister.
- * One can override the page's {@link TPage::getStatePersister()} method and
- * create a TSessionPageStatePersister instance there.
- * Or one can configure the pages to use TSessionPageStatePersister in page configurations
- * as follows,
- * <code>
- * <pages StatePersisterClass="System.Web.UI.TSessionPageStatePersister" />
- * </code>
- * The above configuration will affect the pages under the directory containing
- * this configuration and all its subdirectories.
- * To configure individual pages to use TSessionPageStatePersister, use
- * <code>
- * <pages>
- * <page id="PageID" StatePersisterClass="System.Web.UI.TSessionPageStatePersister" />
- * </pages>
- * </code>
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.1
- */
-class TSessionPageStatePersister extends TComponent implements IPageStatePersister
-{
- const STATE_SESSION_KEY='PRADO_SESSION_PAGESTATE';
- const QUEUE_SESSION_KEY='PRADO_SESSION_STATEQUEUE';
-
- private $_page;
- private $_historySize=10;
-
- /**
- * @param TPage the page that this persister works for
- */
- public function getPage()
- {
- return $this->_page;
- }
-
- /**
- * @param TPage the page that this persister works for.
- */
- public function setPage(TPage $page)
- {
- $this->_page=$page;
- }
-
- /**
- * @return integer maximum number of page states that should be kept in session. Defaults to 10.
- */
- public function getHistorySize()
- {
- return $this->_historySize;
- }
-
- /**
- * @param integer maximum number of page states that should be kept in session
- * @throws TInvalidDataValueException if the number is smaller than 1.
- */
- public function setHistorySize($value)
- {
- if(($value=TPropertyValue::ensureInteger($value))>0)
- $this->_historySize=$value;
- else
- throw new TInvalidDataValueException('sessionpagestatepersister_historysize_invalid');
- }
- /**
- * Saves state in session.
- * @param mixed state to be stored
- */
- public function save($state)
- {
- $session=$this->_page->getSession();
- $session->open();
- $data=serialize($state);
- $timestamp=(string)microtime(true);
- $key=self::STATE_SESSION_KEY.$timestamp;
- $session->add($key,$data);
- if(($queue=$session->itemAt(self::QUEUE_SESSION_KEY))===null)
- $queue=array();
- $queue[]=$key;
- if(count($queue)>$this->getHistorySize())
- {
- $expiredKey=array_shift($queue);
- $session->remove($expiredKey);
- }
- $session->add(self::QUEUE_SESSION_KEY,$queue);
- $this->_page->setClientState(TPageStateFormatter::serialize($this->_page,$timestamp));
- }
-
- /**
- * Loads page state from session.
- * @return mixed the restored state
- * @throws THttpException if page state is corrupted
- */
- public function load()
- {
- if(($timestamp=TPageStateFormatter::unserialize($this->_page,$this->_page->getRequestClientState()))!==null)
- {
- $session=$this->_page->getSession();
- $session->open();
- $key=self::STATE_SESSION_KEY.$timestamp;
- if(($data=$session->itemAt($key))!==null)
- return unserialize($data);
- }
- throw new THttpException(400,'sessionpagestatepersister_pagestate_corrupted');
- }
-}
-
+ * @license http://www.pradosoft.com/license/
+ * @version $Id$
+ * @package System.Web.UI
+ */
+
+/**
+ * TSessionPageStatePersister class
+ *
+ * TSessionPageStatePersister implements a page state persistent method based on
+ * sessions. Page state are stored in user sessions and therefore, this persister
+ * requires session to be started and available.
+ *
+ * TSessionPageStatePersister keeps limited number of history states in session,
+ * mainly to preserve the precious server storage. The number is specified
+ * by {@link setHistorySize HistorySize}, which defaults to 10.
+ *
+ * There are a couple of ways to use TSessionPageStatePersister.
+ * One can override the page's {@link TPage::getStatePersister()} method and
+ * create a TSessionPageStatePersister instance there.
+ * Or one can configure the pages to use TSessionPageStatePersister in page configurations
+ * as follows,
+ * <code>
+ * <pages StatePersisterClass="System.Web.UI.TSessionPageStatePersister" />
+ * </code>
+ * The above configuration will affect the pages under the directory containing
+ * this configuration and all its subdirectories.
+ * To configure individual pages to use TSessionPageStatePersister, use
+ * <code>
+ * <pages>
+ * <page id="PageID" StatePersisterClass="System.Web.UI.TSessionPageStatePersister" />
+ * </pages>
+ * </code>
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.1
+ */
+class TSessionPageStatePersister extends TComponent implements IPageStatePersister
+{
+ const STATE_SESSION_KEY='PRADO_SESSION_PAGESTATE';
+ const QUEUE_SESSION_KEY='PRADO_SESSION_STATEQUEUE';
+
+ private $_page;
+ private $_historySize=10;
+
+ /**
+ * @param TPage the page that this persister works for
+ */
+ public function getPage()
+ {
+ return $this->_page;
+ }
+
+ /**
+ * @param TPage the page that this persister works for.
+ */
+ public function setPage(TPage $page)
+ {
+ $this->_page=$page;
+ }
+
+ /**
+ * @return integer maximum number of page states that should be kept in session. Defaults to 10.
+ */
+ public function getHistorySize()
+ {
+ return $this->_historySize;
+ }
+
+ /**
+ * @param integer maximum number of page states that should be kept in session
+ * @throws TInvalidDataValueException if the number is smaller than 1.
+ */
+ public function setHistorySize($value)
+ {
+ if(($value=TPropertyValue::ensureInteger($value))>0)
+ $this->_historySize=$value;
+ else
+ throw new TInvalidDataValueException('sessionpagestatepersister_historysize_invalid');
+ }
+ /**
+ * Saves state in session.
+ * @param mixed state to be stored
+ */
+ public function save($state)
+ {
+ $session=$this->_page->getSession();
+ $session->open();
+ $data=serialize($state);
+ $timestamp=(string)microtime(true);
+ $key=self::STATE_SESSION_KEY.$timestamp;
+ $session->add($key,$data);
+ if(($queue=$session->itemAt(self::QUEUE_SESSION_KEY))===null)
+ $queue=array();
+ $queue[]=$key;
+ if(count($queue)>$this->getHistorySize())
+ {
+ $expiredKey=array_shift($queue);
+ $session->remove($expiredKey);
+ }
+ $session->add(self::QUEUE_SESSION_KEY,$queue);
+ $this->_page->setClientState(TPageStateFormatter::serialize($this->_page,$timestamp));
+ }
+
+ /**
+ * Loads page state from session.
+ * @return mixed the restored state
+ * @throws THttpException if page state is corrupted
+ */
+ public function load()
+ {
+ if(($timestamp=TPageStateFormatter::unserialize($this->_page,$this->_page->getRequestClientState()))!==null)
+ {
+ $session=$this->_page->getSession();
+ $session->open();
+ $key=self::STATE_SESSION_KEY.$timestamp;
+ if(($data=$session->itemAt($key))!==null)
+ return unserialize($data);
+ }
+ throw new THttpException(400,'sessionpagestatepersister_pagestate_corrupted');
+ }
+}
+