Merge branch 'master' of git://gitorious.org/owncloud/owncloud into oracle-support

Conflicts:
	3rdparty/Sabre/CardDAV/Plugin.php
	3rdparty/smb4php/smb.php
	apps/bookmarks/ajax/addBookmark.php
	apps/bookmarks/ajax/editBookmark.php
	apps/bookmarks/appinfo/migrate.php
	apps/calendar/ajax/calendar/edit.form.php
	apps/calendar/ajax/changeview.php
	apps/calendar/ajax/import/import.php
	apps/calendar/ajax/settings/guesstimezone.php
	apps/calendar/ajax/settings/setfirstday.php
	apps/calendar/ajax/settings/settimeformat.php
	apps/calendar/ajax/share/changepermission.php
	apps/calendar/ajax/share/share.php
	apps/calendar/ajax/share/unshare.php
	apps/calendar/appinfo/app.php
	apps/calendar/appinfo/remote.php
	apps/calendar/appinfo/update.php
	apps/calendar/appinfo/version
	apps/calendar/js/calendar.js
	apps/calendar/l10n/da.php
	apps/calendar/l10n/de.php
	apps/calendar/l10n/fi_FI.php
	apps/calendar/l10n/gl.php
	apps/calendar/l10n/he.php
	apps/calendar/l10n/hr.php
	apps/calendar/l10n/ja_JP.php
	apps/calendar/l10n/lb.php
	apps/calendar/l10n/lt_LT.php
	apps/calendar/l10n/nb_NO.php
	apps/calendar/l10n/pl.php
	apps/calendar/l10n/pt_PT.php
	apps/calendar/l10n/ro.php
	apps/calendar/l10n/ru.php
	apps/calendar/l10n/sv.php
	apps/calendar/l10n/zh_CN.php
	apps/calendar/l10n/zh_TW.php
	apps/calendar/lib/app.php
	apps/calendar/lib/calendar.php
	apps/calendar/lib/object.php
	apps/calendar/lib/share.php
	apps/calendar/templates/part.choosecalendar.rowfields.php
	apps/calendar/templates/part.import.php
	apps/calendar/templates/settings.php
	apps/contacts/ajax/activation.php
	apps/contacts/ajax/addressbook/delete.php
	apps/contacts/ajax/contact/add.php
	apps/contacts/ajax/contact/addproperty.php
	apps/contacts/ajax/contact/delete.php
	apps/contacts/ajax/contact/deleteproperty.php
	apps/contacts/ajax/contact/saveproperty.php
	apps/contacts/ajax/createaddressbook.php
	apps/contacts/ajax/cropphoto.php
	apps/contacts/ajax/currentphoto.php
	apps/contacts/ajax/importaddressbook.php
	apps/contacts/ajax/oc_photo.php
	apps/contacts/ajax/savecrop.php
	apps/contacts/ajax/selectaddressbook.php
	apps/contacts/ajax/updateaddressbook.php
	apps/contacts/ajax/uploadimport.php
	apps/contacts/ajax/uploadphoto.php
	apps/contacts/appinfo/migrate.php
	apps/contacts/appinfo/remote.php
	apps/contacts/css/contacts.css
	apps/contacts/import.php
	apps/contacts/index.php
	apps/contacts/js/contacts.js
	apps/contacts/l10n/ca.php
	apps/contacts/l10n/cs_CZ.php
	apps/contacts/l10n/da.php
	apps/contacts/l10n/de.php
	apps/contacts/l10n/el.php
	apps/contacts/l10n/eo.php
	apps/contacts/l10n/es.php
	apps/contacts/l10n/et_EE.php
	apps/contacts/l10n/eu.php
	apps/contacts/l10n/fa.php
	apps/contacts/l10n/fi_FI.php
	apps/contacts/l10n/fr.php
	apps/contacts/l10n/he.php
	apps/contacts/l10n/hr.php
	apps/contacts/l10n/hu_HU.php
	apps/contacts/l10n/ia.php
	apps/contacts/l10n/it.php
	apps/contacts/l10n/ja_JP.php
	apps/contacts/l10n/ko.php
	apps/contacts/l10n/lb.php
	apps/contacts/l10n/mk.php
	apps/contacts/l10n/nb_NO.php
	apps/contacts/l10n/nl.php
	apps/contacts/l10n/pl.php
	apps/contacts/l10n/pt_BR.php
	apps/contacts/l10n/pt_PT.php
	apps/contacts/l10n/ro.php
	apps/contacts/l10n/ru.php
	apps/contacts/l10n/sk_SK.php
	apps/contacts/l10n/sl.php
	apps/contacts/l10n/sv.php
	apps/contacts/l10n/th_TH.php
	apps/contacts/l10n/tr.php
	apps/contacts/l10n/zh_CN.php
	apps/contacts/l10n/zh_TW.php
	apps/contacts/lib/addressbook.php
	apps/contacts/lib/hooks.php
	apps/contacts/lib/vcard.php
	apps/contacts/photo.php
	apps/contacts/templates/part.contact.php
	apps/contacts/templates/part.contacts.php
	apps/contacts/templates/part.cropphoto.php
	apps/contacts/templates/part.importaddressbook.php
	apps/contacts/templates/part.selectaddressbook.php
	apps/contacts/thumbnail.php
	apps/files/ajax/download.php
	apps/files/ajax/newfile.php
	apps/files/ajax/timezone.php
	apps/files/appinfo/update.php
	apps/files/appinfo/version
	apps/files/index.php
	apps/files/js/fileactions.js
	apps/files/js/filelist.js
	apps/files/js/files.js
	apps/files/l10n/ar.php
	apps/files/l10n/bg_BG.php
	apps/files/l10n/ca.php
	apps/files/l10n/cs_CZ.php
	apps/files/l10n/da.php
	apps/files/l10n/de.php
	apps/files/l10n/el.php
	apps/files/l10n/eo.php
	apps/files/l10n/es.php
	apps/files/l10n/et_EE.php
	apps/files/l10n/eu.php
	apps/files/l10n/fa.php
	apps/files/l10n/fi_FI.php
	apps/files/l10n/fr.php
	apps/files/l10n/gl.php
	apps/files/l10n/he.php
	apps/files/l10n/hr.php
	apps/files/l10n/hu_HU.php
	apps/files/l10n/ia.php
	apps/files/l10n/id.php
	apps/files/l10n/it.php
	apps/files/l10n/ja_JP.php
	apps/files/l10n/ko.php
	apps/files/l10n/lb.php
	apps/files/l10n/lt_LT.php
	apps/files/l10n/mk.php
	apps/files/l10n/ms_MY.php
	apps/files/l10n/nb_NO.php
	apps/files/l10n/nl.php
	apps/files/l10n/nn_NO.php
	apps/files/l10n/pl.php
	apps/files/l10n/pt_BR.php
	apps/files/l10n/pt_PT.php
	apps/files/l10n/ro.php
	apps/files/l10n/ru.php
	apps/files/l10n/sk_SK.php
	apps/files/l10n/sl.php
	apps/files/l10n/sr.php
	apps/files/l10n/sr@latin.php
	apps/files/l10n/sv.php
	apps/files/l10n/th_TH.php
	apps/files/l10n/tr.php
	apps/files/l10n/uk.php
	apps/files/l10n/zh_CN.php
	apps/files/l10n/zh_TW.php
	apps/files_archive/js/archive.js
	apps/files_encryption/lib/cryptstream.php
	apps/files_encryption/lib/proxy.php
	apps/files_encryption/tests/proxy.php
	apps/files_external/appinfo/app.php
	apps/files_external/lib/smb.php
	apps/files_external/lib/streamwrapper.php
	apps/files_external/tests/config.php
	apps/files_external/tests/smb.php
	apps/files_sharing/ajax/email.php
	apps/files_sharing/ajax/getitem.php
	apps/files_sharing/ajax/setpermissions.php
	apps/files_sharing/ajax/share.php
	apps/files_sharing/ajax/toggleresharing.php
	apps/files_sharing/ajax/unshare.php
	apps/files_sharing/ajax/userautocomplete.php
	apps/files_sharing/js/settings.js
	apps/files_sharing/js/share.js
	apps/files_sharing/lib_share.php
	apps/files_sharing/settings.php
	apps/files_sharing/sharedstorage.php
	apps/files_sharing/templates/settings.php
	apps/files_versions/ajax/rollbackVersion.php
	apps/files_versions/versions.php
	apps/gallery/ajax/thumbnail.php
	apps/gallery/appinfo/app.php
	apps/gallery/appinfo/update.php
	apps/gallery/appinfo/version
	apps/gallery/css/styles.css
	apps/gallery/index.php
	apps/gallery/js/pictures.js
	apps/gallery/l10n/ca.php
	apps/gallery/l10n/cs_CZ.php
	apps/gallery/l10n/de.php
	apps/gallery/l10n/el.php
	apps/gallery/l10n/es.php
	apps/gallery/l10n/fi_FI.php
	apps/gallery/l10n/fr.php
	apps/gallery/l10n/it.php
	apps/gallery/l10n/pl.php
	apps/gallery/l10n/pt_PT.php
	apps/gallery/l10n/ru.php
	apps/gallery/l10n/sl.php
	apps/gallery/l10n/sv.php
	apps/gallery/l10n/th_TH.php
	apps/gallery/l10n/tr.php
	apps/gallery/l10n/zh_CN.php
	apps/gallery/lib/album.php
	apps/gallery/lib/hooks_handlers.php
	apps/gallery/lib/managers.php
	apps/gallery/lib/photo.php
	apps/gallery/lib/tiles.php
	apps/gallery/lib/tiles_test.php
	apps/gallery/templates/index.php
	apps/media/lib_ampache.php
	apps/media/lib_collection.php
	apps/media/lib_media.php
	apps/remoteStorage/lib_remoteStorage.php
	apps/tasks/ajax/addtaskform.php
	apps/tasks/ajax/edittask.php
	apps/user_ldap/appinfo/update.php
	apps/user_ldap/group_ldap.php
	apps/user_ldap/lib_ldap.php
	apps/user_ldap/settings.php
	apps/user_ldap/templates/settings.php
	apps/user_ldap/user_ldap.php
	apps/user_migrate/appinfo/app.php
	apps/user_migrate/templates/settings.php
	apps/user_webfinger/host-meta.php
	config/config.sample.php
	core/js/js.js
	core/l10n/da.php
	core/l10n/de.php
	core/l10n/fi_FI.php
	core/l10n/gl.php
	core/l10n/he.php
	core/l10n/hr.php
	core/l10n/id.php
	core/l10n/ja_JP.php
	core/l10n/lb.php
	core/l10n/lt_LT.php
	core/l10n/nb_NO.php
	core/l10n/pl.php
	core/l10n/pt_PT.php
	core/l10n/ro.php
	core/l10n/ru.php
	core/l10n/sv.php
	core/lostpassword/index.php
	core/templates/layout.user.php
	core/templates/login.php
	db_structure.xml
	index.php
	l10n/af/calendar.po
	l10n/af/contacts.po
	l10n/af/core.po
	l10n/af/files.po
	l10n/af/settings.po
	l10n/ar/calendar.po
	l10n/ar/contacts.po
	l10n/ar/core.po
	l10n/ar/files.po
	l10n/ar/media.po
	l10n/ar/settings.po
	l10n/bg_BG/calendar.po
	l10n/bg_BG/contacts.po
	l10n/bg_BG/core.po
	l10n/bg_BG/files.po
	l10n/bg_BG/media.po
	l10n/bg_BG/settings.po
	l10n/ca/calendar.po
	l10n/ca/contacts.po
	l10n/ca/core.po
	l10n/ca/files.po
	l10n/ca/gallery.po
	l10n/ca/settings.po
	l10n/cs_CZ/calendar.po
	l10n/cs_CZ/contacts.po
	l10n/cs_CZ/core.po
	l10n/cs_CZ/files.po
	l10n/cs_CZ/gallery.po
	l10n/cs_CZ/settings.po
	l10n/da/calendar.po
	l10n/da/contacts.po
	l10n/da/core.po
	l10n/da/files.po
	l10n/da/settings.po
	l10n/de/calendar.po
	l10n/de/contacts.po
	l10n/de/core.po
	l10n/de/files.po
	l10n/de/gallery.po
	l10n/de/settings.po
	l10n/el/calendar.po
	l10n/el/contacts.po
	l10n/el/core.po
	l10n/el/files.po
	l10n/el/gallery.po
	l10n/el/settings.po
	l10n/eo/calendar.po
	l10n/eo/contacts.po
	l10n/eo/core.po
	l10n/eo/files.po
	l10n/eo/media.po
	l10n/eo/settings.po
	l10n/es/calendar.po
	l10n/es/contacts.po
	l10n/es/core.po
	l10n/es/files.po
	l10n/es/gallery.po
	l10n/es/settings.po
	l10n/et_EE/calendar.po
	l10n/et_EE/contacts.po
	l10n/et_EE/core.po
	l10n/et_EE/files.po
	l10n/et_EE/settings.po
	l10n/eu/calendar.po
	l10n/eu/contacts.po
	l10n/eu/core.po
	l10n/eu/files.po
	l10n/eu/settings.po
	l10n/fa/calendar.po
	l10n/fa/contacts.po
	l10n/fa/core.po
	l10n/fa/files.po
	l10n/fa/settings.po
	l10n/fi_FI/calendar.po
	l10n/fi_FI/contacts.po
	l10n/fi_FI/core.po
	l10n/fi_FI/files.po
	l10n/fi_FI/gallery.po
	l10n/fi_FI/settings.po
	l10n/fr/calendar.po
	l10n/fr/contacts.po
	l10n/fr/core.po
	l10n/fr/files.po
	l10n/fr/gallery.po
	l10n/fr/media.po
	l10n/fr/settings.po
	l10n/gl/calendar.po
	l10n/gl/contacts.po
	l10n/gl/core.po
	l10n/gl/files.po
	l10n/gl/settings.po
	l10n/he/calendar.po
	l10n/he/contacts.po
	l10n/he/core.po
	l10n/he/files.po
	l10n/he/settings.po
	l10n/hr/calendar.po
	l10n/hr/contacts.po
	l10n/hr/core.po
	l10n/hr/files.po
	l10n/hr/settings.po
	l10n/hu_HU/calendar.po
	l10n/hu_HU/contacts.po
	l10n/hu_HU/core.po
	l10n/hu_HU/files.po
	l10n/hu_HU/settings.po
	l10n/hy/calendar.po
	l10n/hy/contacts.po
	l10n/hy/core.po
	l10n/hy/files.po
	l10n/hy/settings.po
	l10n/ia/calendar.po
	l10n/ia/contacts.po
	l10n/ia/core.po
	l10n/ia/files.po
	l10n/ia/settings.po
	l10n/id/calendar.po
	l10n/id/contacts.po
	l10n/id/core.po
	l10n/id/files.po
	l10n/id/settings.po
	l10n/it/calendar.po
	l10n/it/contacts.po
	l10n/it/core.po
	l10n/it/files.po
	l10n/it/gallery.po
	l10n/it/settings.po
	l10n/ja_JP/calendar.po
	l10n/ja_JP/contacts.po
	l10n/ja_JP/core.po
	l10n/ja_JP/files.po
	l10n/ja_JP/settings.po
	l10n/ko/calendar.po
	l10n/ko/contacts.po
	l10n/ko/core.po
	l10n/ko/files.po
	l10n/ko/settings.po
	l10n/lb/calendar.po
	l10n/lb/contacts.po
	l10n/lb/core.po
	l10n/lb/files.po
	l10n/lb/settings.po
	l10n/lt_LT/calendar.po
	l10n/lt_LT/contacts.po
	l10n/lt_LT/core.po
	l10n/lt_LT/files.po
	l10n/lt_LT/settings.po
	l10n/mk/calendar.po
	l10n/mk/contacts.po
	l10n/mk/core.po
	l10n/mk/files.po
	l10n/mk/settings.po
	l10n/ms_MY/calendar.po
	l10n/ms_MY/contacts.po
	l10n/ms_MY/core.po
	l10n/ms_MY/files.po
	l10n/ms_MY/settings.po
	l10n/nb_NO/calendar.po
	l10n/nb_NO/contacts.po
	l10n/nb_NO/core.po
	l10n/nb_NO/files.po
	l10n/nb_NO/settings.po
	l10n/nl/calendar.po
	l10n/nl/contacts.po
	l10n/nl/core.po
	l10n/nl/files.po
	l10n/nl/settings.po
	l10n/nn_NO/calendar.po
	l10n/nn_NO/contacts.po
	l10n/nn_NO/core.po
	l10n/nn_NO/files.po
	l10n/nn_NO/settings.po
	l10n/pl/calendar.po
	l10n/pl/contacts.po
	l10n/pl/core.po
	l10n/pl/files.po
	l10n/pl/gallery.po
	l10n/pl/settings.po
	l10n/pt_BR/calendar.po
	l10n/pt_BR/contacts.po
	l10n/pt_BR/core.po
	l10n/pt_BR/files.po
	l10n/pt_BR/settings.po
	l10n/pt_PT/calendar.po
	l10n/pt_PT/contacts.po
	l10n/pt_PT/core.po
	l10n/pt_PT/files.po
	l10n/pt_PT/gallery.po
	l10n/pt_PT/settings.po
	l10n/ro/calendar.po
	l10n/ro/contacts.po
	l10n/ro/core.po
	l10n/ro/files.po
	l10n/ro/settings.po
	l10n/ru/calendar.po
	l10n/ru/contacts.po
	l10n/ru/core.po
	l10n/ru/files.po
	l10n/ru/gallery.po
	l10n/ru/settings.po
	l10n/sk_SK/calendar.po
	l10n/sk_SK/contacts.po
	l10n/sk_SK/core.po
	l10n/sk_SK/files.po
	l10n/sk_SK/settings.po
	l10n/sl/calendar.po
	l10n/sl/contacts.po
	l10n/sl/core.po
	l10n/sl/files.po
	l10n/sl/gallery.po
	l10n/sl/settings.po
	l10n/sr/calendar.po
	l10n/sr/contacts.po
	l10n/sr/core.po
	l10n/sr/files.po
	l10n/sr/settings.po
	l10n/sr@latin/calendar.po
	l10n/sr@latin/contacts.po
	l10n/sr@latin/core.po
	l10n/sr@latin/files.po
	l10n/sr@latin/settings.po
	l10n/sv/calendar.po
	l10n/sv/contacts.po
	l10n/sv/core.po
	l10n/sv/files.po
	l10n/sv/gallery.po
	l10n/sv/media.po
	l10n/sv/settings.po
	l10n/templates/bookmarks.pot
	l10n/templates/calendar.pot
	l10n/templates/contacts.pot
	l10n/templates/core.pot
	l10n/templates/files.pot
	l10n/templates/gallery.pot
	l10n/templates/media.pot
	l10n/templates/settings.pot
	l10n/th_TH/calendar.po
	l10n/th_TH/contacts.po
	l10n/th_TH/core.po
	l10n/th_TH/files.po
	l10n/th_TH/gallery.po
	l10n/th_TH/settings.po
	l10n/tr/calendar.po
	l10n/tr/contacts.po
	l10n/tr/core.po
	l10n/tr/files.po
	l10n/tr/gallery.po
	l10n/tr/settings.po
	l10n/uk/calendar.po
	l10n/uk/contacts.po
	l10n/uk/core.po
	l10n/uk/files.po
	l10n/uk/media.po
	l10n/uk/settings.po
	l10n/zh_CN/calendar.po
	l10n/zh_CN/contacts.po
	l10n/zh_CN/core.po
	l10n/zh_CN/files.po
	l10n/zh_CN/gallery.po
	l10n/zh_CN/settings.po
	l10n/zh_TW/calendar.po
	l10n/zh_TW/contacts.po
	l10n/zh_TW/core.po
	l10n/zh_TW/files.po
	l10n/zh_TW/settings.po
	lib/app.php
	lib/base.php
	lib/connector/sabre/file.php
	lib/connector/sabre/locks.php
	lib/connector/sabre/node.php
	lib/db.php
	lib/filecache.php
	lib/fileproxy/quota.php
	lib/files.php
	lib/filestorage/local.php
	lib/filesystemview.php
	lib/group/database.php
	lib/helper.php
	lib/installer.php
	lib/json.php
	lib/l10n.php
	lib/migrate.php
	lib/mimetypes.fixlist.php
	lib/ocs.php
	lib/preferences.php
	lib/public/json.php
	lib/public/util.php
	lib/template.php
	lib/user.php
	lib/user/database.php
	lib/util.php
	lib/vcategories.php
	ocs/providers.php
	settings/admin.php
	settings/ajax/lostpassword.php
	settings/ajax/removeuser.php
	settings/ajax/setbackgroundjobsmode.php
	settings/ajax/setlanguage.php
	settings/ajax/setquota.php
	settings/ajax/togglegroups.php
	settings/apps.php
	settings/css/settings.css
	settings/js/apps.js
	settings/js/users.js
	settings/l10n/bg_BG.php
	settings/l10n/ca.php
	settings/l10n/cs_CZ.php
	settings/l10n/da.php
	settings/l10n/de.php
	settings/l10n/el.php
	settings/l10n/eo.php
	settings/l10n/es.php
	settings/l10n/et_EE.php
	settings/l10n/eu.php
	settings/l10n/fa.php
	settings/l10n/fi_FI.php
	settings/l10n/fr.php
	settings/l10n/gl.php
	settings/l10n/he.php
	settings/l10n/hr.php
	settings/l10n/hu_HU.php
	settings/l10n/it.php
	settings/l10n/ja_JP.php
	settings/l10n/ko.php
	settings/l10n/lt_LT.php
	settings/l10n/mk.php
	settings/l10n/ms_MY.php
	settings/l10n/nb_NO.php
	settings/l10n/nl.php
	settings/l10n/nn_NO.php
	settings/l10n/pl.php
	settings/l10n/pt_BR.php
	settings/l10n/pt_PT.php
	settings/l10n/ru.php
	settings/l10n/sk_SK.php
	settings/l10n/sl.php
	settings/l10n/sv.php
	settings/l10n/th_TH.php
	settings/l10n/tr.php
	settings/l10n/zh_CN.php
	settings/personal.php
	settings/templates/admin.php
	settings/templates/users.php

1 files changed, 95 insertions, 20 deletions

diff --git a/lib/connector/sabre/node.php b/lib/connector/sabre/node.php
index ce5cc022085..b9bf474a041 100644
--- a/lib/connector/sabre/node.php
+++ b/lib/connector/sabre/node.php
@@ -22,6 +22,7 @@
  */
 
 abstract class OC_Connector_Sabre_Node implements Sabre_DAV_INode, Sabre_DAV_IProperties {
+	const GETETAG_PROPERTYNAME = '{DAV:}getetag';
 
 	/**
 	 * The path to the current node
@@ -30,10 +31,15 @@ abstract class OC_Connector_Sabre_Node implements Sabre_DAV_INode, Sabre_DAV_IPr
 	 */
 	protected $path;
 	/**
-	 * file stat cache
+	 * node fileinfo cache
 	 * @var array
 	 */
-	protected $stat_cache;
+	protected $fileinfo_cache;
+	/**
+	 * node properties cache
+	 * @var array
+	 */
+	protected $property_cache = null;
 
 	/**
 	 * Sets up the node, expects a full path name
@@ -82,23 +88,38 @@ abstract class OC_Connector_Sabre_Node implements Sabre_DAV_INode, Sabre_DAV_IPr
 
 	}
 
+	public function setFileinfoCache($fileinfo_cache)
+	{
+		$this->fileinfo_cache = $fileinfo_cache;
+	}
+
 	/**
-	 * Set the stat cache
+	 * Make sure the fileinfo cache is filled. Uses OC_FileCache or a direct stat
 	 */
-	protected function stat() {
-		if (!isset($this->stat_cache)) {
-			$this->stat_cache = OC_Filesystem::stat($this->path);
+	protected function getFileinfoCache() {
+		if (!isset($this->fileinfo_cache)) {
+			if ($fileinfo_cache = OC_FileCache::get($this->path)) {
+			} else {
+				$fileinfo_cache = OC_Filesystem::stat($this->path);
+			}
+
+			$this->fileinfo_cache = $fileinfo_cache;
 		}
 	}
 
+	public function setPropertyCache($property_cache)
+	{
+		$this->property_cache = $property_cache;
+	}
+
 	/**
 	 * Returns the last modification time, as a unix timestamp
 	 *
 	 * @return int
 	 */
 	public function getLastModified() {
-		$this->stat();
-		return $this->stat_cache['mtime'];
+		$this->getFileinfoCache();
+		return $this->fileinfo_cache['mtime'];
 
 	}
 
@@ -144,37 +165,91 @@ abstract class OC_Connector_Sabre_Node implements Sabre_DAV_INode, Sabre_DAV_IPr
 			}
 
 		}
+		$this->setPropertyCache(null);
 		return true;
 	}
 
 	/**
 	 * Returns a list of properties for this nodes.;
 	 *
-	 * The properties list is a list of propertynames the client requested, encoded as xmlnamespace#tagName, for example: http://www.example.org/namespace#author
+	 * The properties list is a list of propertynames the client requested,
+	 * encoded as xmlnamespace#tagName, for example:
+	 * http://www.example.org/namespace#author
 	 * If the array is empty, all properties should be returned
 	 *
 	 * @param array $properties
 	 * @return void
 	 */
-	function getProperties($properties) {
-		// At least some magic in here :-)
-		$query = OC_DB::prepare( 'SELECT * FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ?' );
-		$result = $query->execute( array( OC_User::getUser(), $this->path ));
-
-		$existing = array();
-		while( $row = $result->fetchRow()){
-			$existing[$row['propertyname']] = $row['propertyvalue'];
+	public function getProperties($properties) {
+		if (is_null($this->property_cache)) {
+			$query = OC_DB::prepare( 'SELECT * FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ?' );
+			$result = $query->execute( array( OC_User::getUser(), $this->path ));
+
+			$this->property_cache = array();
+			while( $row = $result->fetchRow()){
+				$this->property_cache[$row['propertyname']] = $row['propertyvalue'];
+			}
 		}
 
+		// if the array was empty, we need to return everything
 		if(count($properties) == 0){
-			return $existing;
+			return $this->property_cache;
 		}
 		
-		// if the array was empty, we need to return everything
 		$props = array();
 		foreach($properties as $property) {
-			if (isset($existing[$property])) $props[$property] = $existing[$property];
+			if (isset($this->property_cache[$property])) $props[$property] = $this->property_cache[$property];
 		}
 		return $props;
 	}
+
+	/**
+	 * Creates a ETag for this path.
+	 * @param string $path Path of the file
+	 * @return string|null Returns null if the ETag can not effectively be determined
+	 */
+	static protected function createETag($path) {
+		return uniqid('', true);
+	}
+
+	/**
+	 * Returns the ETag surrounded by double-quotes for this path.
+	 * @param string $path Path of the file
+	 * @return string|null Returns null if the ETag can not effectively be determined
+	 */
+	static public function getETagPropertyForPath($path) {
+		$tag = self::createETag($path);
+		if (empty($tag)) {
+			return null;
+		}
+		$etag = '"'.$tag.'"';
+		$query = OC_DB::prepare( 'INSERT INTO `*PREFIX*properties` (`userid`,`propertypath`,`propertyname`,`propertyvalue`) VALUES(?,?,?,?)' );
+		$query->execute( array( OC_User::getUser(), $path, self::GETETAG_PROPERTYNAME, $etag ));
+		return $etag;
+	}
+
+	/**
+	 * Remove the ETag from the cache.
+	 * @param string $path Path of the file
+	 */
+	static public function removeETagPropertyForPath($path) {
+		// remove tags from this and parent paths
+		$paths = array();
+		while ($path != '/' && $path != '') {
+			$paths[] = $path;
+			$path = dirname($path);
+		}
+		if (empty($paths)) {
+			return;
+		}
+		$paths[] = $path;
+		$path_placeholders = join(',', array_fill(0, count($paths), '?'));
+		$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*properties`'
+			.' WHERE `userid` = ?'
+			.' AND `propertyname` = ?'
+			.' AND `propertypath` IN ('.$path_placeholders.')'
+			);
+		$vals = array( OC_User::getUser(), self::GETETAG_PROPERTYNAME );
+		$query->execute(array_merge( $vals, $paths ));
+	}
 }