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<?php
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/**
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*
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* Classe en charge de recuperer les donnees d'observation ou liees a leur localisation
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* Le jeu de donnees a interroger est celui utilise par l'application Carnet En Ligne
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* (http://www.tela-botanica.org/page:cel)
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*
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* On passera en parametre lors de la creation d'une instance un objet contenant la liste des criteres
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* qui vont restreindre le nombre de resultats a renvoyer
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*
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* Les deux operations suivantes peuvent etre utilisees dans les services :
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* - recupererStations : va rechercher dans la base de donnees tous les points d'observations
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* correspondant aux criteres de recherche demandes. La precision des lieux d'observation est
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* soit un point precis, soit ramenee au niveau de la commune dans laquelle l'observation a ete faite
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* En fonction du niveau de zoom et du nombre de resultats trouves, la presentation se fera
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* soit par les points localisant les stations pour des niveaux de zoom eleves ou pour un nombre
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* de stations inferieur a un seuil, ou par des mailles de 64*64 pixels dans le cas contraire
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*
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* - recupererObservations : va rechercher dans la base de donnees les donnees sur des observations
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* a partir des coordonnees longitude et latitude d'une station (+ des parametres additionnels)
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*
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* Les donnees seront renvoyees au format JSON
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*
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* @package framework-0.3
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* @author Alexandre GALIBERT <alexandre.galibert@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 $Id$
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* @copyright 2013 Tela Botanica (accueil@tela-botanica.org)
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*
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*/
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class FloradataFormateur {
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private $criteresRecherche;
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private $bdd;
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public function __construct($criteresRecherche) {
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$this->criteresRecherche = $criteresRecherche;
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}
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public function recupererStations() {
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$requeteSql = $this->construireRequeteStations();
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$stations = $this->getBdd()->recupererTous($requeteSql);
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$zoomMaxMaillage = Config::get('zoom_maximal_maillage');
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$seuilMaillage = Config::get('seuil_maillage');
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$zoom = $this->criteresRecherche->zoom;
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$bbox = $this->criteresRecherche->bbox;
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// TODO: gérer une notion d'échelle plutot que de zoom (pour les clients SIG)
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if (count($stations) > $seuilMaillage && intval($zoom)<= $zoomMaxMaillage) {
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$maillage = new Maillage($bbox, $zoom);
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$maillage->genererMaillesVides();
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$maillage->ajouterPoints($stations);
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$stations = $maillage->formaterSortie();
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}
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$formateurJSON = new FormateurJson('floradata');
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$donneesFormatees = $formateurJSON->formaterStations($stations);
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return $donneesFormatees;
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}
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public function recupererObservations() {
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$requeteSql = $this->construireRequeteObservations();
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$observations = $this->getBdd()->recupererTous($requeteSql);
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$nomSite = $this->obtenirNomStation();
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$formateurJSON = new FormateurJson('floradata');
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$donneesFormatees = $formateurJSON->formaterObservations($observations, $nomSite);
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return $donneesFormatees;
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}
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// ------------------------------------------------------------------------ //
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// Fonctions de construction des criteres de recherches pour la requete SQL //
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// ------------------------------------------------------------------------ //
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private function getBdd() {
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if (!isset($this->bdd)) {
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$this->bdd = new Bdd();
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}
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$this->bdd->requeter("USE ".Config::get('bdd_nom'));
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return $this->bdd;
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}
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private function construireRequeteStations() {
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alex |
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$bbox = $this->criteresRecherche->bbox;
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$selectTypeSite =
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"IF(".
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"(longitude IS NULL OR latitude IS NULL) ".
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"OR (longitude=0 AND latitude=0) ".
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"OR (mots_cles_texte LIKE '%sensible%') ".
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"OR NOT (".
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"longitude BETWEEN ".$bbox['ouest']." AND ".$bbox['est']." ".
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"AND latitude BETWEEN ".$bbox['sud']." AND ".$bbox['nord'].
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")".
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", 'COMMUNE', 'STATION'".
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")";
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$requete =
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"SELECT COUNT(id_observation) AS observations, ce_zone_geo, zone_geo, station, ".
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"longitude, latitude, nom AS nom_commune,wgs84_longitude AS lng_commune, ".
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"wgs84_latitude AS lat_commune, ".$selectTypeSite." AS type_site ".
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"FROM cel_obs LEFT JOIN cel_zones_geo cz ON ce_zone_geo=id_zone_geo ".
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"WHERE transmission=1 ".
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$this->construireWhereDepartement().' '.
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$this->construireWhereAuteur().' '.
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$this->construireWhereDate().' '.
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$this->construireWhereReferentiel().' '.
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$this->construireWhereTaxon().' '.
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$this->construireWhereCoordonneesBbox().' '.
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"GROUP BY longitude, latitude, wgs84_longitude, wgs84_latitude";
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return $requete;
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}
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private function construireRequeteObservations() {
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$requete =
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"SELECT id_observation AS id_obs, nom_ret_nn AS nn, nom_ret AS nomSci, ".
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"Date(date_observation) AS date, milieu AS lieu, nom_referentiel, ".
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"Concat(prenom_utilisateur, ' ', nom_utilisateur) AS observateur, ce_utilisateur AS observateurId ".
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"FROM cel_obs WHERE transmission=1 ".
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$this->construireWhereAuteur().' '.
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$this->construireWhereReferentiel().' '.
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$this->construireWhereDate().' '.
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$this->construireWhereTaxon().' '.
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$this->construireWhereCoordonneesPoint().' '.
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"ORDER BY nom_ret, date, observateur";
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return $requete;
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}
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protected function construireWhereTaxon() {
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$sql = '';
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if (isset($this->criteresRecherche->taxon)) {
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$taxons = $this->criteresRecherche->taxon;
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$criteres = array();
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foreach ($taxons as $taxon) {
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$nomRang = $this->getNomRang($taxon);
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if ($nomRang == 'genre') {
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$criteres[] = "famille=".$this->getBdd()->proteger($taxon['nom']);
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} else {
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$criteres[] = "nom_ret LIKE ".$this->getBdd()->proteger($taxon['nom']."%");
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if ($nomRang == 'espece') {
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$criteres = array_merge($criteres, $this->concatenerTaxonsSousEspeces($taxon));
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}
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}
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}
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$sql = "AND (".implode(' OR ',array_unique($criteres)).")";
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}
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return $sql;
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}
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protected function getNomRang($taxon) {
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$nomsRangs = array('famille', 'genre', 'espece', 'sous_espece');
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for ($index = 0; $index < count($nomsRangs)
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&& Config::get("rang.".$nomsRangs[$index]) != $taxon['rang']; $index ++);
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$position = $index == count($nomsRangs) ? count($nomsRangs)-1 : $index;
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return $nomsRangs[$position];
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}
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protected function concatenerTaxonsSousEspeces($taxon) {
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$referentiel = new Referentiel($this->criteresRecherche->referentiel, $taxon);
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$sousTaxons = $referentiel->recupererTaxonsSousEspeces();
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$criteres = array();
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foreach ($sousTaxons as $sousTaxon) {
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$criteres[] = "nom_ret LIKE ".$this->getBdd()->proteger($sousTaxon['nom']."%");
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}
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return $criteres;
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}
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protected function concatenerTaxonsFamilles($taxon) {
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$referentiel = new Referentiel($this->criteresRecherche->referentiel, $taxon);
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$sousTaxons = $referentiel->recupererTaxonsFamilles();
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$criteres = array();
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foreach ($sousTaxons as $sousTaxon) {
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$criteres[] = "nom_ret LIKE ".$this->getBdd()->proteger($sousTaxon['nom']."%");
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}
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return $criteres;
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}
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private function construireWhereReferentiel() {
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$sql = '';
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if (isset($this->criteresRecherche->referentiel) && !isset($this->criteresRecherche->taxon)) {
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$referentiel = current(explode('_', $this->criteresRecherche->referentiel));
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$sql = "AND nom_referentiel LIKE ".$this->getBdd()->proteger($referentiel."%");
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}
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return $sql;
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}
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private function construireWhereDepartement() {
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$sql = '';
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if (isset($this->criteresRecherche->departement)) {
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$valeurs_a_proteger = $this->criteresRecherche->departement;
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foreach ($valeurs_a_proteger as $valeur) {
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$valeurs_protegees[] = "ce_zone_geo LIKE " . $this->getBdd()->proteger('INSEE-C:' . $valeur . '%');
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}
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$valeurs = implode(' OR ', $valeurs_protegees);
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$sql = "AND ($valeurs)";
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}
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return $sql;
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}
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private function construireWhereAuteur() {
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$sql = '';
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if (isset($this->criteresRecherche->auteur)) {
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$utilisateur = $this->getBdd()->proteger($this->criteresRecherche->auteur);
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$sql = "AND courriel_utilisateur = $utilisateur";
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}
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return $sql;
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}
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private function construireWhereDate() {
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$sql = '';
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if (isset($this->criteresRecherche->nbJours)) {
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$nbJours = $this->criteresRecherche->nbJours;
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$sql = "AND (Datediff(Curdate(), date_creation)<={$nbJours})";
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} else {
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$sql = $this->construireWhereDateDebutEtFin();
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}
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return $sql;
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}
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private function construireWhereDateDebutEtFin() {
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$sql = '';
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$dateDebut = isset($this->criteresRecherche->dateDebut) ? $this->criteresRecherche->dateDebut : null;
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$dateFin = isset($this->criteresRecherche->dateFin) ? $this->criteresRecherche->dateFin : null;
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if (!is_null($dateDebut) || !is_null($dateFin)) {
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$dateFin = !is_null($dateFin) ? $dateFin : date('Y-m-d');
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$condition = '';
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if ($dateDebut == $dateFin) {
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$condition = "Date(date_observation)=".$this->getBdd()->proteger($dateDebut);
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} elseif (is_null($dateFin)) {
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$condition = "Date(date_observation)>=".$this->getBdd()->proteger($dateDebut);
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} elseif (is_null($dateDebut)) {
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$condition = "Date(date_observation)<=".$this->getBdd()->proteger($dateFin);
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} else {
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$condition = "Date(date_observation) BETWEEN ".$this->getBdd()->proteger($dateDebut)." ".
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"AND ".$this->getBdd()->proteger($dateFin);
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}
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$sql = "AND ($condition)";
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}
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return $sql;
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}
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private function construireWhereCoordonneesBbox() {
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$bbox = $this->criteresRecherche->bbox;
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$sql =
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"AND (".
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"(".
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"latitude BETWEEN ".$bbox['sud']." AND ".$bbox['nord']." ".
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"AND longitude BETWEEN ".$bbox['ouest']." AND ".$bbox['est'].
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") OR (".
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"((longitude IS NULL OR latitude IS NULL) OR (longitude=0 AND latitude=0) ".
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"OR (longitude>180 AND latitude>90)) AND ".
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"wgs84_longitude BETWEEN ".$bbox['ouest']." AND ". $bbox['est']." ".
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"AND wgs84_latitude BETWEEN ".$bbox['sud']." AND ".$bbox['nord'].
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")".
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")";
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return $sql;
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}
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private function construireWhereCoordonneesPoint() {
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$longitude = $this->criteresRecherche->longitude;
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$latitude = $this->criteresRecherche->latitude;
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$condition = "(longitude=".$longitude." AND latitude=".$latitude." ".
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"AND (mots_cles_texte IS NULL OR mots_cles_texte NOT LIKE '%sensible%'))";
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if ($this->criteresRecherche->typeSite == 'commune') {
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$commune = $this->obtenirCoordonneesCommune();
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$condition .=
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" OR (".
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"((longitude IS NULL OR latitude IS NULL) OR (longitude=0 AND latitude=0) ".
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"OR (longitude>180 AND latitude>90)) ".
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"AND ce_zone_geo=".$this->getBdd()->proteger($commune['id_zone_geo']).
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")";
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}
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return "AND ($condition)";
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}
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private function obtenirCoordonneesCommune() {
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$requete = "SELECT id_zone_geo, nom FROM cel_zones_geo WHERE wgs84_longitude=".
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$this->criteresRecherche->longitude." AND wgs84_latitude=".$this->criteresRecherche->latitude;
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$commune = $this->getBdd()->recuperer($requete);
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if ($commune === false) {
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$commune = null;
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}
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return $commune;
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}
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private function obtenirNomStation() {
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// verifier si les coordonnees du point de requetage correspondent a une commune
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$station = $this->obtenirCoordonneesCommune();
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if (is_null($station)) {
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$requete = 'SELECT DISTINCT lieudit AS nom FROM cel_obs WHERE longitude='.
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$this->criteresRecherche->longitude.' AND latitude='.$this->criteresRecherche->latitude;
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$station = $this->getBdd()->recuperer($requete);
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}
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$nomStation = '';
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if ($station !== false) {
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$nomStation = trim($station['nom']);
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}
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return $nomStation;
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}
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}
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?>
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