Subversion Repositories eFlore/Projets.eflore-projets

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Ignore whitespace Rev 1045 → Rev 1046

/trunk/scripts/modules/osm/OrdonneurDeChemins.php
New file
0,0 → 1,170
<?php
/**
* Traitement de l'ordre :
*
* Fonction qui rajoute l'ordre et le sens de chaque way d'une relation dans la table `osm_relation_a_chemins`
*
* Exemple de lancement du script :
* /opt/lampp/bin/php -d memory_limit=8000M cli.php osm -a ordre -m manuel
*
*/
class OrdonneurDeChemins {
private $conteneur;
private $bdd;
private $messages;
private $mode;
 
private $idRelation = null;
private $idChemin = null;
private $idNoeud = null;
private $chemins = array();
private $ordre = 0;
 
public function __construct($conteneur) {
$this->conteneur = $conteneur;
$this->bdd = $this->conteneur->getBdd();
$this->messages = $this->conteneur->getMessages();
$this->mode = $this->conteneur->getParametre('m');
}
 
public function executer() {
$relations = $this->getToutesRelationsAChemins();
if ($this->mode == 'manuel') {
$this->messages->traiterInfo("Nombre de relations : %s", array(count($relations)));
}
foreach ($relations as $relation) {
// Traitement de la relation courante
$this->idRelation = $relation['id_relation'];
 
$this->chargerCheminsRelationActuelle();
 
// Selection du premier chemin comme chemin actuel
$this->idChemin = $this->getIdPremierChemin();
$this->mettreAJourChemin('directe', __LINE__);
 
// Selection du dernier noeud comme noeud actuel
$idDernierNoeud = $this->getIdDernierNoeud();
if ($idDernierNoeud) {
$this->idNoeud = $idDernierNoeud;
$this->ordonnerChemins();
}
 
// Affichage de l'avancement
if ($this->mode == 'manuel') {
$this->messages->afficherAvancement("Ordone les chemins de la relation : ", 1);
}
}
}
 
private function getToutesRelationsAChemins() {
$requete = 'SELECT DISTINCT id_relation '.
'FROM osm_relation_a_chemins '.
' -- '.__FILE__.' : '.__LINE__;
$relations = $this->bdd->recupererTous($requete);
return $relations;
}
 
private function chargerDonneesRelationActuelle() {
$requete = 'SELECT cn.id_chemin, cn.id_noeud, cn.ordre '.
'FROM osm_relation_a_chemins AS rc '.
' LEFT JOIN osm_chemin_a_noeuds AS cn ON (rc.id_chemin = cn.id_chemin) '.
"WHERE rc.id_relation = {$this->idRelation} ".
"ODER BY cn.ordre ASC ".
' -- '.__FILE__.' : '.__LINE__;
$infos = $this->bdd->recupererTous($requete);
foreach ($infos as $info) {
$this->infosRel[$this->idRelation][$info['id_chemin']]['noeuds'][$info['id_noeud']] = $info['ordre'];
}
$this->chemins = ($chemins) ? $chemins : array();
$this->ordre = 0;
}
 
private function chargerCheminsRelationActuelle() {
$requete = 'SELECT id_chemin '.
'FROM osm_relation_a_chemins '.
"WHERE id_relation = {$this->idRelation} ".
' -- '.__FILE__.' : '.__LINE__;
$chemins = $this->bdd->recupererTous($requete);
$this->chemins = ($chemins) ? $chemins : array();
$this->ordre = 0;
}
 
private function getIdPremierChemin() {
return isset($this->chemins[0]) ? $this->chemins[0]['id_chemin'] : null;
}
 
private function mettreAJourChemin($sens, $ligne, $fichier = __FILE__) {
$ordre = $this->ordre++;
$requete = 'UPDATE osm_relation_a_chemins '.
"SET ordre = '$ordre', sens = '$sens' ".
"WHERE id_relation = {$this->idRelation} ".
"AND id_chemin = {$this->idChemin} ".
" -- $fichier : $ligne";
$retour = $this->bdd->requeter($requete);
return $retour;
}
 
private function getIdDernierNoeud() {
$requete = 'SELECT id_noeud '.
'FROM osm_chemin_a_noeuds '.
"WHERE id_chemin = {$this->idChemin} ".
'ORDER BY ordre DESC '.
'LIMIT 0,1 '.
' -- '.__FILE__.' : '.__LINE__;
$noeud = $this->bdd->recuperer($requete);
$idDernierNoeud = ($noeud) ? $noeud['id_noeud'] : false;
return $idDernierNoeud;
}
 
private function ordonnerChemins() {
foreach ($this->chemins as $chemin) {
// Selection du chemin qui possède le dernier noeud du précédent chemin et écarter l'actuel
$idCheminSuivant = $this->getIdCheminSuivant();
if ($idCheminSuivant) {
$this->idChemin = $idCheminSuivant;
$this->comparerNoeuds();
} else {
$msg = "Impossible de trouver le chemin suivant pour la relation : %s";
$this->messages->traiterAvertissement($msg, array($this->idRelation));
}
}
}
 
private function getIdCheminSuivant() {
$requete = 'SELECT wn.id_chemin '.
'FROM osm_relation_a_chemins AS rw '.
' LEFT JOIN osm_chemin_a_noeuds AS wn ON (rw.id_chemin = wn.id_chemin) '.
"WHERE wn.id_noeud = {$this->idNoeud} ".
" AND wn.id_chemin != {$this->idChemin} ".
" AND rw.id_relation = {$this->idRelation} ".
" LIMIT 0,1 ".
' -- '.__FILE__.' : '.__LINE__;
$chemins = $this->bdd->recuperer($requete);
$idCheminSuivant = ($chemins && isset($chemins['id_chemin'])) ? $chemins['id_chemin'] : false;
return $idCheminSuivant;
}
 
private function comparerNoeuds() {
$idPremierNoeud = $this->getIdPremierNoeud();
$idDernierNoeud = $this->getIdDernierNoeud();
if ( strcmp($idPremierNoeud, $this->idNoeud ) == 0 ) {
$this->mettreAJourChemin('directe', __LINE__);
$this->idNoeud = $idDernierNoeud;
} else {
$this->mettreAJourChemin('indirecte', __LINE__);
$this->idNoeud = $idPremierNoeud;
}
}
 
private function getIdPremierNoeud() {
$requete = 'SELECT id_noeud '.
'FROM osm_chemin_a_noeuds '.
"WHERE id_chemin = {$this->idChemin} ".
'ORDER BY ordre ASC '.
'LIMIT 0,1 '.
' -- '.__FILE__.' : '.__LINE__;
$noeud = $this->bdd->recuperer($requete);
$idPremierNoeud = ($noeud) ? $noeud['id_noeud'] : false;
return $idPremierNoeud;
}
}