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package org.tela_botanica.client.util;
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import java.util.HashMap;
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import java.util.Iterator;
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import org.tela_botanica.client.RegistreId;
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import org.tela_botanica.client.modeles.Configuration;
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import com.extjs.gxt.ui.client.Registry;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.http.client.RequestBuilder;
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import com.google.gwt.http.client.URL;
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public class UtilDAO {
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	/**
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	 * @author greg
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	 * @description La classe utilDAO fournit des méthodes communes pour les outils DAO
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	 * */
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	private static String baseUrl = ((Configuration) Registry.get(RegistreId.CONFIG)).getServiceBaseUrl();
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	/**
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	 * @author greg
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	 * @description La classe construireRequete permet de revonyer un object RequestBuilder pour le service JREST
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	 * @param nomService String le nom du service JREST
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	 * @param strParametres String le paramètre pour le service
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	 */
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	public static RequestBuilder construireRequete(String nomService, String strParametres)	{
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		String[] arrParametres = {strParametres};
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		return construireRequete(nomService, arrParametres);
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	}
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	/**
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	 *
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	 * @param nomService
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	 * @param arrParametres
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	 * @return
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	 */
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	public static RequestBuilder construireRequete(String nomService, String[] arrParametres)	{
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		return construireRequete(nomService, arrParametres, "GET");
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	}
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	public static RequestBuilder construireRequete(String nomService, String[] arrParametres, String typeRequete)	{
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		HashMap<String, String> hmRestrictions = null;
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		return construireRequete(nomService, arrParametres, hmRestrictions, typeRequete);
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	}
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	public static RequestBuilder construireRequete(String nomService, HashMap<String, String> hmRestrictions)	{
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		return construireRequete(nomService, hmRestrictions, "GET");
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	}
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		public static RequestBuilder construireRequete(String nomService, HashMap<String, String> hmRestrictions, String typeRequete)	{
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		String[] arrParametres = null;
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		return construireRequete( nomService, arrParametres, hmRestrictions, typeRequete);
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	}
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	public static RequestBuilder construireRequete(String nomService, String[] arrParametres, HashMap<String, String> hmRestrictions, String typeRequete)	{
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		String restrictions = "";
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		//Les restrictions sont ajoutées en paramètres GET
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		if ((hmRestrictions!=null)&&(hmRestrictions.size() > 0))	{
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			Iterator<String> itRestrictions = hmRestrictions.keySet().iterator();
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			while (itRestrictions.hasNext())	{
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				String cle = itRestrictions.next();
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				restrictions += cle + "=" + hmRestrictions.get(cle);
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				if (itRestrictions.hasNext())	{
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					restrictions = restrictions + "&";
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				}
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			}
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			restrictions = "?" + restrictions;
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		}
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		String strParametres = "/";
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		if (arrParametres != null) {
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			for (int i=0; i < arrParametres.length; i++)	{
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				if (arrParametres[i] != null)	{
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					strParametres += arrParametres[i]+ "/";
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				}
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			}
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		}
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		String wholeUrl = baseUrl + nomService + strParametres + restrictions;
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		wholeUrl = URL.encode(wholeUrl);
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		GWT.log("Envoi d'une requête: " + wholeUrl, null);
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		RequestBuilder rb;
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		if (typeRequete.equals("GET"))	{
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			rb = new RequestBuilder(RequestBuilder.GET, wholeUrl);
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		} else	{
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			rb = new RequestBuilder(RequestBuilder.POST, wholeUrl);
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		}
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		return rb;
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	}
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	/**
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	 *
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	 * @param nomService String le nom du service
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	 * @return un objet RB
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	 */
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	public static RequestBuilder construireRequete(String nomService)	{
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		String[] arrParametres = null;
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		return construireRequete(nomService, arrParametres);
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	}
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}