Synnefo » Pithos

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.rest;

import gr.grnet.pithos.web.client.GSS;

import gr.grnet.pithos.web.client.InsufficientPermissionsException;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import com.google.gwt.core.client.GWT;

import com.google.gwt.http.client.Request;

import com.google.gwt.http.client.RequestBuilder;

import com.google.gwt.http.client.RequestCallback;

import com.google.gwt.http.client.Response;

public abstract class MultipleDeleteCommand extends RestCommand {

        Map<String, Throwable> errors = new HashMap<String, Throwable>();

        List<String> successPaths = new ArrayList<String>();

        String[] paths;

        public MultipleDeleteCommand(String[] pathToDelete){

                this(pathToDelete, true);

        }

        public MultipleDeleteCommand(String[] pathToDelete, boolean showLoading){

                setShowLoadingIndicator(showLoading);

                if(isShowLoadingIndicator())

                        GSS.get().showLoadingIndicator("Deleting "+pathToDelete.length+" items",null);

                paths = pathToDelete;

                for (final String pathg : pathToDelete) {

                        GWT.log("[DEL]"+pathg, null);

                        RequestBuilder builder = new RequestBuilder(RequestBuilder.DELETE, pathg);

                        try {

                                handleHeaders(builder, pathg);

                                builder.sendRequest("", new RequestCallback() {

                                        @Override

                                        public void onError(Request arg0, Throwable arg1) {

                                                errors.put(pathg, arg1);

                                        }

                                        @Override

                                        public void onResponseReceived(Request arg0, Response arg1) {

                                                if (arg1.getStatusCode() == 204)

                                                        successPaths.add(pathg);

                                                else if(arg1.getStatusCode() == 403)

                                                        sessionExpired();

                                                else if (arg1.getStatusCode() == 405)

                                                        errors.put(pathg, new InsufficientPermissionsException("You don't have permissions to delete this resource"));

                                                else

                                                        errors.put(pathg, new RestException(pathg, arg1.getStatusCode(), arg1.getStatusText(), arg1.getText()));

                                        }

                                });

                        } catch (Exception ex) {

                                errors.put(pathg, ex);

                        }

                }

        }

        public boolean isComplete() {

                return errors.size() + successPaths.size() == paths.length;

        }

        @Override

        public boolean execute() {

                boolean com = isComplete();

                if (com) {

                        if(hasErrors())

                                for(String p : errors.keySet())

                                        onError(p, errors.get(p));

                        onComplete();

                        if(isShowLoadingIndicator())

                                GSS.get().hideLoadingIndicator();

                        return false;

                }

                return true;

        }

        public boolean hasErrors(){

                return errors.size() >0;

        }

        /**

         * Retrieve the errors.

         *

         * @return the errors

         */

        public Map<String, Throwable> getErrors() {

                return errors;

        }

        public void debug(){

                GWT.log("-ERRORS-->"+getErrors().size(), null);

                for(String p : getErrors().keySet())

                        GWT.log("error:"+p, getErrors().get(p));

        }

        public abstract void onError(String path, Throwable throwable);

}