| New file |
|---|
| 0,0 → 1,89 |
|---|
| <?php |
| |
| /** FONCTIONS D'ASSEMBLAGE DE REQUETE |
| * |
| * @package eflore-projets |
| * @author Mathilde SALTHUN-LASSALLE <mathilde@tela-botanica.org> |
| * @author Delphine CAUQUIL <delphine@tela-botanica.org> |
| * @author Jean-Pascal MILCENT <jpm@tela-botanica.org> |
| * @license GPL v3 <http://www.gnu.org/licenses/gpl.txt> |
| * @license CECILL v2 <http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt> |
| * @version 1.0 |
| * @copyright 1999-2011 Tela Botanica (accueil@tela-botanica.org) |
| */ |
| |
| class RequetesAssemblage { |
| |
| private $table; |
| private $total_resultat; |
| private $Bdd; |
| private $condition; |
| |
| public function __construct(BDD $bdd) { |
| $this->Bdd = $bdd; |
| } |
| |
| public function getTotal_resultat() { |
| return $this->total_resultat; |
| } |
| |
| public function retournerRequeteJointure($requete_jointure) { |
| $jointure = ''; |
| if ($requete_jointure !== "") { |
| foreach ($requete_jointure as $req_j) { |
| $jointure .= ' '.$req_j['type'].' '.$req_j['table'].' ON ' |
| .implode(' AND', $req_j['on']); |
| } |
| } |
| return $jointure; |
| } |
| |
| public function assemblerLaRequete(Requete $requete_param) { |
| $this->table = $requete_param->table; |
| $requete_jointure = $this->retournerRequeteJointure($requete_param->requete_jointure); |
| $this->condition = $this->retournerRequeteCondition($requete_param->requete_condition); |
| $limites = $this->delimiterResultatsRequete($requete_param->limite_besoin, $requete_param->limite_requete); |
| $requete = ' SELECT '.$requete_param->champs_recherches.' FROM '.$requete_param->table.' ' |
| .$requete_jointure .' '.$this->condition.' '.$limites; |
| return $requete; |
| } |
| |
| public function retournerRequeteCondition($requete_condition) { |
| $condition = ''; |
| if ($requete_condition !== "") { |
| $condition = ' WHERE '.implode(' AND ', $requete_condition); |
| } |
| return $condition; |
| } |
| |
| public function calculerTotalResultat() { |
| $requete = 'SELECT count(*) as nombre FROM '.$this->table.' '.$this->condition; |
| $res = $this->Bdd->recuperer($requete); |
| if ($res) { |
| $this->total_resultat = $res['nombre']; |
| } else { |
| $this->total_resultat = 0; |
| $e = 'Données introuvables dans la base'; |
| throw new Exception($e, RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE); |
| } |
| } |
| |
| public function delimiterResultatsRequete($limite_besoin, $limite_requete) { |
| $this->calculerTotalResultat(); |
| $requete_limite = ''; |
| if ($limite_besoin) { |
| if (($limite_requete['depart'] < $this->total_resultat) && |
| (($limite_requete['limite'] + $limite_requete['depart'] ) |
| < $this->total_resultat )) { |
| $requete_limite = 'LIMIT '.$limite_requete['depart'].', ' |
| .$limite_requete['limite']; |
| } else { |
| $e = "Erreur : la valeur pour le paramètre navigation.départ est supérieure". |
| " au nombre total de résultats."; |
| throw new Exception($e, RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE); |
| } |
| } |
| return $requete_limite; |
| } |
| } |
| ?> |