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<?php
/***********************************************
* File : backend/combined/exporter.php
* Project : Z-Push
* Descr : Exporter class for the combined backend.
*
* Created : 11.05.2010
*
* Copyright 2007 - 2011 Zarafa Deutschland GmbH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation with the following additional
* term according to sec. 7:
*
* According to sec. 7 of the GNU Affero General Public License, version 3,
* the terms of the AGPL are supplemented with the following terms:
*
* "Zarafa" is a registered trademark of Zarafa B.V.
* "Z-Push" is a registered trademark of Zarafa Deutschland GmbH
* The licensing of the Program under the AGPL does not imply a trademark license.
* Therefore any rights, title and interest in our trademarks remain entirely with us.
*
* However, if you propagate an unmodified version of the Program you are
* allowed to use the term "Z-Push" to indicate that you distribute the Program.
* Furthermore you may use our trademarks where it is necessary to indicate
* the intended purpose of a product or service provided you use it in accordance
* with honest practices in industrial or commercial matters.
* If you want to propagate modified versions of the Program under the name "Z-Push",
* you may only do so if you have a written permission by Zarafa Deutschland GmbH
* (to acquire a permission please contact Zarafa at trademark@zarafa.com).
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Consult LICENSE file for details
************************************************/
/**
* the ExportChangesCombined class is returned from GetExporter for changes.
* It combines the changes from all backends and prepends all folderids with the backendid
*/
class ExportChangesCombined implements IExportChanges {
private $backend;
private $syncstates;
private $exporters;
private $importer;
private $importwraps;
public function ExportChangesCombined(&$backend) {
$this->backend =& $backend;
$this->exporters = array();
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined constructed");
}
/**
* Initializes the state and flags
*
* @param string $state
* @param int $flags
*
* @access public
* @return boolean status flag
*/
public function Config($syncstate, $flags = 0) {
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->Config(...)");
$this->syncstates = $syncstate;
if(!is_array($this->syncstates)){
$this->syncstates = array();
}
foreach($this->backend->backends as $i => $b){
if(isset($this->syncstates[$i])){
$state = $this->syncstates[$i];
} else {
$state = '';
}
$this->exporters[$i] = $this->backend->backends[$i]->GetExporter();
$this->exporters[$i]->Config($state, $flags);
}
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->Config() success");
}
/**
* Returns the amount of changes to be exported
*
* @access public
* @return int
*/
public function GetChangeCount() {
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->GetChangeCount()");
$c = 0;
foreach($this->exporters as $i => $e){
$c += $this->exporters[$i]->GetChangeCount();
}
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->GetChangeCount() success");
return $c;
}
/**
* Synchronizes a change to the configured importer
*
* @access public
* @return array with status information
*/
public function Synchronize() {
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->Synchronize()");
foreach($this->exporters as $i => $e){
if(!empty($this->backend->config['backends'][$i]['subfolder']) && !isset($this->syncstates[$i])){
// first sync and subfolder backend
$f = new SyncFolder();
$f->serverid = $i.$this->backend->config['delimiter'].'0';
$f->parentid = '0';
$f->displayname = $this->backend->config['backends'][$i]['subfolder'];
$f->type = SYNC_FOLDER_TYPE_OTHER;
$this->importer->ImportFolderChange($f);
}
while(is_array($this->exporters[$i]->Synchronize()));
}
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->Synchronize() success");
return true;
}
/**
* Reads and returns the current state
*
* @access public
* @return string
*/
public function GetState() {
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->GetState()");
foreach($this->exporters as $i => $e){
$this->syncstates[$i] = $this->exporters[$i]->GetState();
}
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->GetState() success");
return $this->syncstates;
}
/**
* Configures additional parameters used for content synchronization
*
* @param ContentParameters $contentparameters
*
* @access public
* @return boolean
* @throws StatusException
*/
public function ConfigContentParameters($contentparameters) {
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->ConfigContentParameters()");
foreach($this->exporters as $i => $e){
//call the ConfigContentParameters() of each exporter
$e->ConfigContentParameters($contentparameters);
}
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->ConfigContentParameters() success");
}
/**
* Sets the importer where the exporter will sent its changes to
* This exporter should also be ready to accept calls after this
*
* @param object &$importer Implementation of IImportChanges
*
* @access public
* @return boolean
*/
public function InitializeExporter(&$importer) {
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->InitializeExporter(...)");
foreach ($this->exporters as $i => $e) {
if(!isset($this->_importwraps[$i])){
$this->importwraps[$i] = new ImportHierarchyChangesCombinedWrap($i, $this->backend, $importer);
}
$e->InitializeExporter($this->importwraps[$i]);
}
ZLog::Write(LOGLEVEL_DEBUG, "ExportChangesCombined->InitializeExporter(...) success");
}
}
?>
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