code.grnet.gr Git - pithos/blob - gss/src/gr/ebs/gss/client/rest/GetCommand.java

   1 /*
   2  * Copyright 2009 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.client.rest;
  20
  21 import gr.ebs.gss.client.GSS;
  22 import gr.ebs.gss.client.rest.resource.FileResource;
  23 import gr.ebs.gss.client.rest.resource.FolderResource;
  24 import gr.ebs.gss.client.rest.resource.GroupResource;
  25 import gr.ebs.gss.client.rest.resource.GroupUserResource;
  26 import gr.ebs.gss.client.rest.resource.GroupsResource;
  27 import gr.ebs.gss.client.rest.resource.OtherUserResource;
  28 import gr.ebs.gss.client.rest.resource.OthersResource;
  29 import gr.ebs.gss.client.rest.resource.RestResource;
  30 import gr.ebs.gss.client.rest.resource.SearchResource;
  31 import gr.ebs.gss.client.rest.resource.SharedResource;
  32 import gr.ebs.gss.client.rest.resource.TagsResource;
  33 import gr.ebs.gss.client.rest.resource.TrashResource;
  34 import gr.ebs.gss.client.rest.resource.UploadStatusResource;
  35 import gr.ebs.gss.client.rest.resource.UserResource;
  36 import gr.ebs.gss.client.rest.resource.UserSearchResource;
  37
  38 import com.google.gwt.http.client.Request;
  39 import com.google.gwt.http.client.Response;
  40
  41 /**
  42  * @author kman
  43  */
  44 public abstract class GetCommand<T extends RestResource> extends RestCommand{
  45
  46         boolean complete = false;
  47         T result = null;
  48         Class<T> aclass;
  49
  50         public GetCommand(Class<T> theclass, String pathToGet){
  51                 this(theclass,pathToGet,true);
  52         }
  53
  54         public GetCommand(Class<T> theclass, String pathToGet, boolean showLoading){
  55                 setShowLoadingIndicator(showLoading);
  56                 if(isShowLoadingIndicator())
  57                         GSS.get().showLoadingIndicator();
  58                 this.aclass = theclass;
  59                 final String path;
  60                 if(pathToGet.indexOf("?") != -1)
  61                         path = pathToGet;
  62                 else
  63                         path =fixPath(pathToGet);
  64                 RestRequestBuilder builder = new RestRequestBuilder("GET", path);
  65
  66                 try {
  67                         handleHeaders(builder, path);
  68                         builder.sendRequest("", new RestCallback(path) {
  69
  70                                 @Override
  71                                 public Object deserialize(Response response) {
  72                                         return deserializeResponse(path, response);
  73                                 }
  74
  75                                 @Override
  76                                 public void handleError(Request request, Throwable exception) {
  77                                         complete = true;
  78                                         GetCommand.this.onError(exception);
  79                                 }
  80
  81                                 @Override
  82                                 public void handleSuccess(Object object) {
  83                                         result = (T) object;
  84                                         complete = true;
  85                                 }
  86
  87                         });
  88                 } catch (Exception ex) {
  89                         complete = true;
  90                         onError(ex);
  91                 }
  92         }
  93
  94         public GetCommand(Class<T> theclass, String username , String pathToGet){
  95                 this(theclass,username, pathToGet, true);
  96         }
  97
  98         public GetCommand(Class<T> theclass, String username , String pathToGet, boolean showLoading){
  99                 setShowLoadingIndicator(showLoading);
 100                 if(isShowLoadingIndicator())
 101                         GSS.get().showLoadingIndicator();
 102                 this.aclass = theclass;
 103                 final String path = fixPath(pathToGet);
 104                 RestRequestBuilder builder = new RestRequestBuilder("GET", path);
 105
 106                 try {
 107                         handleHeaders(username, builder, path);
 108                         builder.sendRequest("", new RestCallback(path) {
 109
 110                                 @Override
 111                                 public Object deserialize(Response response) {
 112                                         return deserializeResponse(path, response);
 113                                 }
 114
 115                                 @Override
 116                                 public void handleError(Request request, Throwable exception) {
 117                                         complete = true;
 118                                         GetCommand.this.onError(exception);
 119                                 }
 120
 121                                 @Override
 122                                 public void handleSuccess(Object object) {
 123                                         result = (T) object;
 124                                         complete = true;
 125                                 }
 126
 127                         });
 128                 } catch (Exception ex) {
 129                         complete = true;
 130                         onError(ex);
 131                 }
 132         }
 133
 134         public boolean isComplete() {
 135                 return complete;
 136         }
 137
 138         public T getResult(){
 139                 return result;
 140         }
 141
 142         public boolean execute() {
 143                 boolean com = isComplete();
 144                 if(com){
 145                         if(isShowLoadingIndicator())
 146                                 GSS.get().hideLoadingIndicator();
 147                         if(getResult() != null)
 148                                 onComplete();
 149                         return false;
 150                 }
 151                 return true;
 152         }
 153
 154         public Object deserializeResponse(String path, Response response) {
 155                 RestResource result1 = null;
 156                 if(aclass.equals(FolderResource.class)){
 157                         result1 = new FolderResource(path);
 158                         result1.createFromJSON(response.getText());
 159                 }
 160                 else if(aclass.equals(FileResource.class)){
 161                         result1 = new FileResource(path);
 162                         result1.createFromJSON(response.getHeader("X-GSS-Metadata"));
 163                 }
 164                 else if(aclass.equals(GroupsResource.class)){
 165                         result1 = new GroupsResource(path);
 166                         result1.createFromJSON(response.getText());
 167                 }
 168                 else if(aclass.equals(TrashResource.class)){
 169                         result1 = new TrashResource(path);
 170                         result1.createFromJSON(response.getText());
 171                 }
 172                 else if(aclass.equals(SharedResource.class)){
 173                         result1 = new SharedResource(path);
 174                         result1.createFromJSON(response.getText());
 175                 }
 176                 else if(aclass.equals(OthersResource.class)){
 177                         result1 = new OthersResource(path);
 178                         result1.createFromJSON(response.getText());
 179                 }
 180                 else if(aclass.equals(OtherUserResource.class)){
 181                         result1 = new OtherUserResource(path);
 182                         result1.createFromJSON(response.getText());
 183                 }
 184                 else if(aclass.equals(GroupResource.class)){
 185                         result1 = new GroupResource(path);
 186                         result1.createFromJSON(response.getText());
 187                 }
 188                 else if(aclass.equals(GroupUserResource.class)){
 189                         result1 = new GroupUserResource(path);
 190                         result1.createFromJSON(response.getText());
 191                 }
 192                 else if(aclass.equals(UserResource.class)){
 193                         result1 = new UserResource(path);
 194                         result1.createFromJSON(response.getText());
 195                 }
 196                 else if(aclass.equals(TagsResource.class)){
 197                         result1 = new TagsResource(path);
 198                         result1.createFromJSON(response.getText());
 199                 }
 200                 else if(aclass.equals(SearchResource.class)){
 201                         result1 = new SearchResource(path);
 202                         result1.createFromJSON(response.getText());
 203                 }
 204                 else if(aclass.equals(UserSearchResource.class)){
 205                         result1 = new UserSearchResource(path);
 206                         result1.createFromJSON(response.getText());
 207                 }
 208                 else if(aclass.equals(UploadStatusResource.class)){
 209                         result1 = new UploadStatusResource(path);
 210                         result1.createFromJSON(response.getText());
 211                 }
 212                 return result1;
 213         }
 214
 215 }