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jpm |
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<?php
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mathilde |
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/**
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* classe pour web service qui affiche les images de Coste.
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* il n'existe qu'une seule version pour les images de Coste : 2.00
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* retour en application/json
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*
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* exemple d'appel du service :
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* .../service:eflore:0.1/coste/images?masque.nt=1053
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* .../service:eflore:0.1/coste/images?masque.nn=39594,39601
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* .../service:eflore:0.1/coste/images
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*
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* paramètres disponibles : navigation.depart, navigation.limite, masque.nn, masque.nt
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*
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* @package eFlore/services
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* @author Jean-Pascal MILCENT <jpm@tela-botanica.org>
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* @author Mathilde Salthun-Lassalle <mathilde@tela-botanica.org>
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* @license GPL v3 <http://www.gnu.org/licenses/gpl.txt>
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* @license CECILL v2 <http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt>
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* @version 1.0
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* @copyright 1999-2011 Tela Botanica (accueil@tela-botanica.org)
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*/
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class Images extends Commun {
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protected $table ;
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private $requete_condition = array(" image != '' ");
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private $champs_recherches = " num_nom, image, flore_bdtfx_nn, flore_bdtfx_nt ";
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private $total_resultat;
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protected $limite_requete = array('depart' => 0, 'limite' => 100);
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private $masque = array();
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public function consulter($ressources, $parametres) {
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$this->ressources = $ressources;
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$this->parametres = $parametres;
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$this->traiterRessources();
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$this->traiterParametres();
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$this->table = config::get('bdd_table').'_v2_00';
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$requete = $this->assemblerLaRequete();
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$resultat = $this->getBdd()->recupererTous($requete);
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$versionResultat = $this->traiterResultat($resultat, $this->table, $requete);
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$resultats = $versionResultat;
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return $resultats;
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}
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//+-----------------------------------traitement ressources et paramètres --------------------------------+
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public function traiterRessources() {
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if (empty($this->ressources) ) {
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if (isset($this->parametres['masque.nn']) == false
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&& isset($this->parametres['masque.nt']) == false) {
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$this->requete_condition[] = " flore_bdtfx_nt != '' AND flore_bdtfx_nn != '' ";
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}
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} else {
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$e = "La ressource {$this->ressources[0]} n'existe pas.";
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$this->renvoyerErreur(RestServeur::HTTP_CODE_MAUVAISE_REQUETE,$e);
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}
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}
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public function traiterParametres() {
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foreach ($this->parametres as $param => $val ) {
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switch ($param) {
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case 'masque.nt' :
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$this->analyserMasque($val,'nt');
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break;
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case 'masque.nn' :
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$this->analyserMasque($val,'nn');
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break;
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case 'navigation.depart' :
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$this->limite_requete['depart'] = $val;
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break;
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case 'navigation.limite' :
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$this->limite_requete['limite'] = $val;
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break;
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default :
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$e = 'Erreur dans les paramètres de recherche de votre requête : </br> Le parametre " '
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.$param.' " n\'existe pas.';
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$this->renvoyerErreur(RestServeur::HTTP_CODE_MAUVAISE_REQUETE,$e);
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break;
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}
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}
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}
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/*private function traiterVersion() {
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if( isset($this->parametres['version.projet']) ) {
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$version = $this->parametres['version.projet'];
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if (preg_match('/^([0-9]+(?:[._][0-9]+|))$/', $version, $retour)) {
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$this->version[] = $retour[0];
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$this->version_projet[] = 'v'.str_replace('.', '_', $this->version[0]);
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$this->table_version[] = Config::get('bdd_table').''.$this->version_projet[0];
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} elseif ($version == '+') {
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$this->obtenirDerniereVersion();
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} elseif ($version == '*' && empty($this->ressources) == false ) {
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$this->chargerVersions();
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$total = count($this->metadonnees);
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for($i = 0 ; $i < $total ; $i++) {
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$this->version[$i] = $this->metadonnees[$i]['version'];
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$this->version_projet[$i] = 'v'.str_replace('.', '_',$this->version[$i]);
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$this->table_version[$i] = Config::get('bdd_table').''.$this->version_projet[$i];
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}
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}else {
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$e = 'Erreur parametre version inconnu. ';
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$this->renvoyerErreur(RestServeur::HTTP_CODE_MAUVAISE_REQUETE,$e);
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}
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} else {
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$this->obtenirDerniereVersion();
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}
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}
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private function obtenirDerniereVersion(){
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$this->chargerVersions();
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$this->version[] = $this->metadonnees[0]['version'];
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$this->version_projet[] ='v'.str_replace('.', '_',$this->metadonnees[0]['version']);
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$this->table_version[] = Config::get('bdd_table').''.$this->version_projet[0];
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}
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private function chargerVersions() {
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$requete = "SELECT version ".
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"FROM ".Config::get('bdd_table_meta')." ".
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"ORDER BY date_creation DESC ";
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$resultats = $this->Bdd->recupererTous($requete);
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if (!is_array($resultats) || count($resultats) <= 0) {
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$message = "Les méta-données n'ont pu être chargée pour la ressource demandée";
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$code = RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE;
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throw new Exception($message, $code);
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}
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$this->metadonnees = $resultats;
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}*/
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private function analyserMasque($valeur, $type_masque) {
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$this->masque[] = "$type_masque=$valeur";
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if (empty($valeur)) {
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$e = 'renseignez une valeur pour masque.nn';
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$this->renvoyerErreur(RestServeur::HTTP_CODE_MAUVAISE_REQUETE,$e);
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} elseif (preg_match('/^[0-9]+$/', $valeur)) {
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$this->requete_condition[] = " flore_bdtfx_".$type_masque." = $valeur";
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} elseif (preg_match('/[0-9]+/', $valeur)){
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$nums = explode(',', $valeur);
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$total = count($nums);
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$condition = '';
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for ($i = 0; $i < $total; $i++) {
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$condition .= " flore_bdtfx_".$type_masque." = {$nums[$i]}";
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if ($i < ($total-1) ) {
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$condition .= " OR ";
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}
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}
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$this->requete_condition[] = $condition;
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} else {
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$e = "valeur incorrecte pour masque.".$type_masque;
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$this->renvoyerErreur(RestServeur::HTTP_CODE_MAUVAISE_REQUETE,$e);
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}
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}
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/*public function verifierFormat($format) {
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if (in_array($format, $this->formats_supportes)) {
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$this->format_retour = $format;
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} else {
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$e = "Le format $format demandé n'est pas disponible.";
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$this->renvoyerErreur(RestServeur::HTTP_CODE_MAUVAISE_REQUETE,$e);
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}
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}*/
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//+-------------------------------------------formatage résultats---------------------------------------------+
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public function retournerResultatFormate($resultat, $table) {
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$resultat_json = array();
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$resultat_json['entete'] = $this->formaterEnteteResultat();
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foreach ($resultat as $tab) {
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$num_coste = $tab['num_nom'];
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unset($tab['num_nom']);
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$resultat_json['resultats'][$num_coste]['num_nomenclatural'] = $tab['flore_bdtfx_nn'];
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$resultat_json['resultats'][$num_coste]['num_taxonomique'] = $tab['flore_bdtfx_nt'];
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$resultat_json['resultats'][$num_coste]['binaire.href'] = $this->formaterUrlImage($tab['image']);
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$resultat_json['resultats'][$num_coste]['mime'] = "images/png";
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}
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return $resultat_json;
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}
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public function formaterUrlImage($fichier) {
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$chemin = config::get('donnees')."2.00/img/$fichier";
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return $chemin;
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}
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/*public function donnerVersionDuneTable($table) {
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$version = strstr($table,'v');
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$version = str_replace('v','', $version);
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$version = str_replace('_','.', $version);
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return $version;
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}*/
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public function formaterEnteteResultat() {
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$entete['depart'] = $this->limite_requete['depart'];
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$entete['limite'] = $this->limite_requete['limite'];
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$entete['total'] = $this->total_resultat;
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$entete['masque'] = empty($this->masque) ? 'aucun' : implode('&', $this->masque);
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$url = $this->formulerUrl($this->total_resultat, '/images');
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if (isset($url['precedent']) && $url['precedent'] != '') {
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$entete['href.precedent'] = $url['precedent'];
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}
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if (isset($url['suivant']) && $url['suivant'] != '') {
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$entete['href.suivant'] = $url['suivant'];
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}
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return $entete;
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}
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//+--------------------------FONCTIONS D'ASSEMBLAGE DE LA REQUETE-------------------------------------------+
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public function assemblerLaRequete() {
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$requete = ' SELECT '.$this->champs_recherches.' FROM '.$this->table.' '
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.$this->retournerRequeteCondition().' '
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.$this->delimiterResultatsRequete();
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return $requete;
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}
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public function retournerRequeteCondition() {
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$condition = '';
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if (empty($this->requete_condition) == false) {
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$condition = ' WHERE '.implode(' AND ', $this->requete_condition);
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}
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return $condition;
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}
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public function calculerTotalResultat() {
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$requete = 'SELECT count(*) as nombre FROM '.$this->table.' '
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.$this->retournerRequeteCondition();
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$res = $this->getBdd()->recuperer($requete);
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if ($res) {
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$this->total_resultat = $res['nombre'];
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} else {
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$this->total_resultat = 0;
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$e = 'Données introuvables dans la base';
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$this->renvoyerErreur(RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE, $e);
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}
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}
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public function delimiterResultatsRequete() {
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$this->calculerTotalResultat();
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$requete_limite = '';
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if ((count($this->ressources)) == 0) {
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if (($this->limite_requete['depart'] < $this->total_resultat) &&
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(($this->limite_requete['limite'] + $this->limite_requete['depart'] )
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< $this->total_resultat )) {
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$requete_limite = 'LIMIT '.$this->limite_requete['depart'].', '
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.$this->limite_requete['limite'];
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}
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}
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return $requete_limite;
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}
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}
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?>
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