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package org.tela_botanica.client.modeles;
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import java.util.HashMap;
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import org.tela_botanica.client.interfaces.Rafraichissable;
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import org.tela_botanica.client.modeles.ListeReferentielPerso.TypesReferentiels;
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import org.tela_botanica.client.observation.ObservationModele;
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import com.google.gwt.http.client.Request;
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import com.google.gwt.http.client.RequestBuilder;
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import com.google.gwt.http.client.RequestCallback;
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import com.google.gwt.http.client.RequestException;
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import com.google.gwt.http.client.Response;
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import com.google.gwt.http.client.URL;
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import com.google.gwt.json.client.JSONArray;
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import com.google.gwt.json.client.JSONParser;
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import com.google.gwt.json.client.JSONString;
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import com.google.gwt.json.client.JSONValue;
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public class ListeReferentielPersoAsynchroneDAO {
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/**
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* Cache
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*
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*/
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private HashMap<String,ListeReferentielPerso> cache = new HashMap();
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private TypesReferentiels refDemande = null;
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public ListeReferentielPersoAsynchroneDAO(ObservationModele obs) {
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}
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public void setRefDemande(TypesReferentiels refDemande) {
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this.refDemande = refDemande;
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}
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public void obtenirListeDonnees(final Rafraichissable r, String utilisateur, final String critere) {
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switch (refDemande) {
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case REFERENTIEL_STATION:
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break;
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default:
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break;
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}
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ListeReferentielPerso referentielPersoDataFromCache=null;
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// En cache ?
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if ((referentielPersoDataFromCache=getFromCache(critere))!=null) {
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r.rafraichir(referentielPersoDataFromCache,true);
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}
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else {
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RequestBuilder rb = new RequestBuilder(RequestBuilder.GET, Configuration.getServiceBaseUrl() +
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"/SelfRefList/"+
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utilisateur+"/"+
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refDemande.toString()+
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"?start=0&limit=50&recherche="+URL.encode(critere));
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try {
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rb.sendRequest(null, new RequestCallback() {
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public void onError(final Request request, final Throwable exception) {
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// TODO Auto-generated method stub
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}
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public void onResponseReceived(final Request request,
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final Response response) {
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final ListeReferentielPerso referentielData;
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final JSONValue responseValue = JSONParser.parse(response.getText());
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JSONArray reponse = null;
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// si c'est un tableau
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if ((reponse = responseValue.isArray()) != null) {
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JSONString elementsRef;
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final int taillemax = reponse.size();
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referentielData = new ListeReferentielPerso(taillemax, refDemande);
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for (int i = 0; i < taillemax; i++) {
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if ((elementsRef = reponse.get(i).isString()) != null) {
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String valeur = elementsRef.stringValue();
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referentielData.put(i+"", valeur);
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}
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}
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} else {
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referentielData = new ListeReferentielPerso(0, refDemande);
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}
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// dans tous les cas on transmet la liste crée au rafraichissable en lui demandant de répandre les données car il est
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// le premier à les recevoir
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addToCache(critere, referentielData);
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r.rafraichir(referentielData, true);
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}
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});
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} catch (RequestException e) {
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e.printStackTrace();
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}
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} // Fin else si pas de cache
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}
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private void addToCache(String query, ListeReferentielPerso result) {
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cache.put(query.toLowerCase(),result);
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}
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private ListeReferentielPerso getFromCache (String query) {
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return (ListeReferentielPerso) cache.get(query.toLowerCase());
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}
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}
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