IHMUserParamLoaderClass.php
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<?php
/**
* @class IHMUserParamLoaderClass
* @brief Loader for IHM user parameter properties
* @details
*/
class IHMUserParamLoaderClass
{
protected $userParamsList = null;
//derived parameter in manager file
private static $mgrDerivedNode = 'paramList';
private static $mgrDerivedParamNode = 'param';
private static $mgrDerivedParamIdAtt = 'xml:id';
private static $mgrDerivedParamNameAtt = 'name';
private static $mgrDerivedParamExpressionAtt = 'buildchain';
private static $mgrDerivedParamTimeStepAtt = 'timestep';
//additional info for derived parameter
private static $infoDerivedUnitsNode = 'units';
private static $infoDerivedDescriptionNode = 'description';
/*
* @brief Constructor
*/
function __construct()
{
}
/*
* @brief Get derived parameter info from name ("ws_***")
*/
public function getDerivedParameterFromName($paramName)
{
if (!preg_match("#^ws_#",$paramName))
return array("success" => false, "message" => "Bad derived parameter name");
//extract real parameter name
$realName = substr($paramName , 3);
//try to load user parameters definition if not already done
if (!isset($this->userParamsList))
$this->userParamsList = $this->loadUserParamManagerFile();
if (!$this->userParamsList["success"])
return $this->userParamsList["success"];
if (isset($this->userParamsList["params"]) && isset($this->userParamsList["params"]["derived"]))
{
//find the parameter info
foreach($this->userParamsList["params"]["derived"] as $paramInfo)
{
if ($paramInfo["name"] == $realName)
return array("success" => true, "param" => $paramInfo);
}
}
return array("success" => false, "message" => "Cannot find derived parameter");
}
/*
* @brief Load derived parameter manager file
*/
private function loadUserParamManagerFile()
{
//load xml file
$dom = new DomDocument("1.0");
if (!$dom->load(IHMConfigClass::getUserParamManagerFilePath()))
return array("success" => false, "message" => "Cannot load user parameter manager file");
$userParams = array();
//get derived parameter node
$derivedNodes = $dom->getElementsByTagName(self::$mgrDerivedNode);
$derivedParams = array();
if (count($derivedNodes) > 0)
{
$derivedParamNodes = $derivedNodes->item(0)->getElementsByTagName(self::$mgrDerivedParamNode);
foreach ($derivedParamNodes as $derivedParamNode)
{
//id
$paramId = $derivedParamNode->getAttribute(self::$mgrDerivedParamIdAtt);
//name
$paramName = $derivedParamNode->getAttribute(self::$mgrDerivedParamNameAtt);
//expression
$paramExpression = $derivedParamNode->getAttribute(self::$mgrDerivedParamExpressionAtt);
//timestep
$paramTimeStep = $derivedParamNode->getAttribute(self::$mgrDerivedParamTimeStepAtt);
array_push($derivedParams,array(
"id" => $paramId,
"name" => $paramName,
"expression" => $paramExpression,
"timestep" => $paramTimeStep,
"info" => $this->loadDerivedParameterInfo($id)
));
}
}
$userParams["derived"] = $derivedParams;
return array("success" => true, "params" => $userParams);
}
/*
* @brief Load additionnal derived parameter info from paramId
*/
private function loadDerivedParameterInfo($paramId)
{
//get full path
$path = IHMConfigClass::getUserWSPath().$paramId.".xml";
$result = array(
"units" => "",
"description" => ""
);
if (!file_exists($path))
return $result;
//load xml file
$dom = new DomDocument("1.0");
if (!$dom->load($path))
return $result;
//get parameter units
$unitsNodes = $dom->getElementsByTagName(self::$infoDerivedUnitsNode);
if (count($unitsNodes) > 0)
$result["units"] = $unitsNodes->item(0)->nodeValue;
//get parameter description
$descNodes = $dom->getElementsByTagName(self::$infoDerivedDescriptionNode);
if (count($descNodes) > 0)
$result["description"] = $descNodes->item(0)->nodeValue;
return $result;
}
}