/**
* Query the database with the given SPARQL query.
*
* @param Erfurt_SparqlQuery $query Parsed SPARQL query.
* @param string $resultform Result form. If set to 'xml' the result will be
* SPARQL Query Results XML Format as described in @link http://www.w3.org/TR/rdf-sparql-XMLres/.
*
* @return array/string array of triple arrays, or XML.
* Format depends on $resultform parameter.
*/
public function queryModel(Erfurt_Sparql_Query $query, $resultform = 'plain')
{
$this->query = $query;
require_once 'Erfurt/Sparql/EngineDb/QuerySimplifier.php';
$qsimp = new Erfurt_Sparql_EngineDb_QuerySimplifier();
$qsimp->simplify($this->query);
require_once 'Erfurt/Sparql/EngineDb/QueryOptimizer.php';
$queryOptimizer = new Erfurt_Sparql_EngineDb_QueryOptimizer($this);
$result = $queryOptimizer->optimize($this->query);
if ($result instanceof Erfurt_Sparql_Query) {
$this->query = $result;
}
$resultform = strtolower($resultform);
switch ($resultform) {
case 'xml':
require_once 'Erfurt/Sparql/EngineDb/ResultRenderer/Xml.php';
$rc = new Erfurt_Sparql_EngineDb_ResultRenderer_Xml();
break;
//require_once 'Erfurt/Exception.php';
//throw new Erfurt_Exception('XML result format not supported yet.');
//require_once 'Erfurt/Sparql/EngineDb/ResultRenderer/EfZendDb/Xml.php';
//$this->rc = new Erfurt_Sparql_EngineDb_ResultRenderer_RapZendDb_Xml();
//break;
//require_once 'Erfurt/Exception.php';
//throw new Erfurt_Exception('XML result format not supported yet.');
//require_once 'Erfurt/Sparql/EngineDb/ResultRenderer/EfZendDb/Xml.php';
//$this->rc = new Erfurt_Sparql_EngineDb_ResultRenderer_RapZendDb_Xml();
//break;
case 'extended':
require_once 'Erfurt/Sparql/EngineDb/ResultRenderer/Extended.php';
$rc = new Erfurt_Sparql_EngineDb_ResultRenderer_Extended();
break;
case 'json':
require_once 'Erfurt/Sparql/EngineDb/ResultRenderer/Json.php';
$rc = new Erfurt_Sparql_EngineDb_ResultRenderer_Json();
break;
case 'plain':
default:
require_once 'Erfurt/Sparql/EngineDb/ResultRenderer/Plain.php';
$rc = new Erfurt_Sparql_EngineDb_ResultRenderer_Plain();
}
if (is_array($result)) {
$result = $rc->convertFromDbResults($result['data'], $this->query, $this, $result['vars']);
return $result;
}
require_once 'Erfurt/Sparql/EngineDb/SqlGenerator/Adapter/Ef.php';
$this->sg = new Erfurt_Sparql_EngineDb_SqlGenerator_Adapter_Ef($this->query, $this->arModelIdMapping);
require_once 'Erfurt/Sparql/EngineDb/TypeSorter.php';
$this->ts = new Erfurt_Sparql_EngineDb_TypeSorter($this->query, $this);
$this->_setOptions();
$arSqls = $this->sg->createSql();
#var_dump($arSqls);exit;
$this->ts->setData($this->sg);
return $rc->convertFromDbResults($this->_queryMultiple($this->ts->getOrderifiedSqls($arSqls)), $this->query, $this, $this->sg->arVarAssignments);
}
/**
* Execute a prepared statement by filling it with variables
*
* @param array $arVariables Array with (variable name => value) pairs
* @param string $resultform Which form the result should have
*
* @return mixed Result according to $resultform
*/
public function execute($arVariables, $resultform = false)
{
if ($this->arPrepared === null) {
throw new Exception('You need to prepare() the query first.');
}
if ($this->bRealPrepared) {
return SparqlEngineDb_ResultConverter::convertFromDbResults($this->pr->execute($this->arDbStatements, $arVariables), $this, $resultform);
} else {
list($strSelect, $strFrom, $strWhere) = $this->arPrepared;
return SparqlEngineDb_ResultConverter::convertFromDbResults($this->queryMultiple($this->ts->getOrderifiedSqls($strSelect, $strFrom, $this->pr->replacePlaceholdersWithVariables($strWhere, $this->sg->getPlaceholders(), $arVariables))), $this, $resultform);
}
}
