code.grnet.gr Git - pithos/blob - web_client/src/gr/grnet/pithos/web/client/rest/MultipleDeleteCommand.java

   1 /*
   2  * Copyright 2011 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client.rest;
  36
  37 import gr.grnet.pithos.web.client.Pithos;
  38 import gr.grnet.pithos.web.client.InsufficientPermissionsException;
  39
  40 import java.util.ArrayList;
  41 import java.util.HashMap;
  42 import java.util.List;
  43 import java.util.Map;
  44
  45 import com.google.gwt.core.client.GWT;
  46 import com.google.gwt.http.client.Request;
  47 import com.google.gwt.http.client.RequestBuilder;
  48 import com.google.gwt.http.client.RequestCallback;
  49 import com.google.gwt.http.client.Response;
  50
  51 public abstract class MultipleDeleteCommand extends RestCommand {
  52
  53
  54         Map<String, Throwable> errors = new HashMap<String, Throwable>();
  55
  56         List<String> successPaths = new ArrayList<String>();
  57
  58         String[] paths;
  59
  60         public MultipleDeleteCommand(Pithos _app, String[] pathToDelete){
  61                 this(_app, pathToDelete, true);
  62         }
  63
  64         public MultipleDeleteCommand(Pithos _app, String[] pathToDelete, boolean showLoading){
  65         super(_app);
  66                 setShowLoadingIndicator(showLoading);
  67                 if(isShowLoadingIndicator())
  68                         app.showLoadingIndicator("Deleting "+pathToDelete.length+" items",null);
  69                 paths = pathToDelete;
  70                 for (final String pathg : pathToDelete) {
  71                         GWT.log("[DEL]"+pathg, null);
  72                         RequestBuilder builder = new RequestBuilder(RequestBuilder.DELETE, pathg);
  73
  74                         try {
  75                                 handleHeaders(builder, pathg);
  76                                 builder.sendRequest("", new RequestCallback() {
  77
  78                                         @Override
  79                                         public void onError(Request arg0, Throwable arg1) {
  80                                                 errors.put(pathg, arg1);
  81                                         }
  82
  83                                         @Override
  84                                         public void onResponseReceived(Request arg0, Response arg1) {
  85                                                 if (arg1.getStatusCode() == 204)
  86                                                         successPaths.add(pathg);
  87                                                 else if(arg1.getStatusCode() == 403)
  88                                                         sessionExpired();
  89                                                 else if (arg1.getStatusCode() == 405)
  90                                                         errors.put(pathg, new InsufficientPermissionsException("You don't have permissions to delete this resource"));
  91                                                 else
  92                                                         errors.put(pathg, new RestException(pathg, arg1.getStatusCode(), arg1.getStatusText(), arg1.getText()));
  93                                         }
  94
  95                                 });
  96                         } catch (Exception ex) {
  97                                 errors.put(pathg, ex);
  98                         }
  99                 }
 100         }
 101
 102         public boolean isComplete() {
 103                 return errors.size() + successPaths.size() == paths.length;
 104         }
 105
 106         @Override
 107         public boolean execute() {
 108                 boolean com = isComplete();
 109                 if (com) {
 110                         if(hasErrors())
 111                                 for(String p : errors.keySet())
 112                                         onError(p, errors.get(p));
 113                         onComplete();
 114                         if(isShowLoadingIndicator())
 115                                 app.hideLoadingIndicator();
 116                         return false;
 117                 }
 118                 return true;
 119         }
 120
 121         public boolean hasErrors(){
 122                 return errors.size() >0;
 123         }
 124
 125
 126         /**
 127          * Retrieve the errors.
 128          *
 129          * @return the errors
 130          */
 131         public Map<String, Throwable> getErrors() {
 132                 return errors;
 133         }
 134
 135         public void debug(){
 136                 GWT.log("-ERRORS-->"+getErrors().size(), null);
 137                 for(String p : getErrors().keySet())
 138                         GWT.log("error:"+p, getErrors().get(p));
 139         }
 140
 141         public abstract void onError(String path, Throwable throwable);
 142
 143 }