gallery.web.validator.wallpaper.WallpaperUpdateBindValidator.java Source code

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Here is the source code for gallery.web.validator.wallpaper.WallpaperUpdateBindValidator.java

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/*
 *  Copyright 2010 demchuck.dima@gmail.com
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package gallery.web.validator.wallpaper;

import com.multimedia.service.wallpaper.IWallpaperService;
import common.CommonAttributes;
import common.bind.CommonBindValidator;
import gallery.model.beans.Wallpaper;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import org.springframework.validation.Errors;
import security.beans.User;

/**
 * prevents user from updating items of other user
 * @author demchuck.dima@gmail.com
 */
public class WallpaperUpdateBindValidator extends CommonBindValidator {
    public IWallpaperService wallpaper_service;

    public void init() {
        StringBuilder sb = new StringBuilder();
        common.utils.MiscUtils.checkNotNull(wallpaper_service, "wallpaper_service", sb);
        if (sb.length() > 0) {
            throw new NullPointerException(sb.toString());
        }
    }

    public static final String[] WHERE_CONDITION = new String[] { "id", "id_users" };

    @Override
    protected void validate(Object command, Errors err, HttpServletRequest request) {
        super.validate(command, err, request);
        if (!err.hasErrors()) {
            Wallpaper p = (Wallpaper) command;
            p.setDate_upload(new Date());
            validate(p.getId(), err, request, wallpaper_service);
        }
    }

    /**
     * validates a wallpaper with given id
     * @param id_wallpaper wallpaper's id
     * @param err object with errors
     * @param request http request
     * @param wallpaper_service service
     * @return false if another user
     */
    public static boolean validate(Long id_wallpaper, Errors err, HttpServletRequest request,
            IWallpaperService wallpaper_service) {
        User u = security.Utils.getCurrentUser(request);
        if (wallpaper_service.getRowCount(WHERE_CONDITION, new Object[] { id_wallpaper, u.getId() }) != 1) {
            //TODO try to show global errors
            if (err != null)
                err.reject("another_user");
            CommonAttributes.addErrorMessage("another_user", request);
            return false;
        } else {
            return true;
        }
    }

    public void setWallpaper_service(IWallpaperService value) {
        this.wallpaper_service = value;
    }

}