org.gss_project.gss.web.client.rest.MultipleDeleteCommand.java Source code

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Here is the source code for org.gss_project.gss.web.client.rest.MultipleDeleteCommand.java

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/*
 * Copyright 2009 Electronic Business Systems Ltd.
 *
 * This file is part of GSS.
 *
 * GSS is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GSS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.gss_project.gss.web.client.rest;

import org.gss_project.gss.web.client.GSS;
import org.gss_project.gss.common.exceptions.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;

/**
 * @author kman
 */
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);

}