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/*

 * Copyright 2009, 2010 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 gr.ebs.gss.client.rest.resource;

import java.io.Serializable;

import com.google.gwt.json.client.JSONObject;

import com.google.gwt.user.client.ui.TreeItem;

/**

 * @author kman

 *

 */

public abstract class RestResource implements Serializable{

        String uri;

        public RestResource(String aUri) {

                super();

                setUri(aUri);

        }

        /**

         * Retrieve the uri.

         *

         * @return the uri

         */

        public String getUri() {

                return uri;

        }

        /**

         * Modify the uri.

         *

         * @param aUri the path to set

         */

        public void setUri(String aUri) {

                uri = aUri;

                if (uri!=null) {

                        // Remove any parameter part

                        int qm = uri.indexOf('?');

                        if (qm>=0) uri = uri.substring(0, qm);

                }

        }

        public abstract void createFromJSON(String text);

        protected String unmarshallString(JSONObject obj, String key){

                if(obj.get(key) != null)

                        if(obj.get(key).isString() != null)

                                return obj.get(key).isString().stringValue();

                return null;

        }

        protected boolean unmarshallBoolean(JSONObject obj, String key){

                if(obj.get(key) != null)

                        if(obj.get(key).isBoolean() != null)

                                return obj.get(key).isBoolean().booleanValue();

                return false;

        }

        public static native String getDate(Long ms)/*-{

                return (new Date(ms)).toUTCString();

        }-*/;

        public abstract String getLastModifiedSince();

        public void updateHistory(@SuppressWarnings("unused") TreeItem item, @SuppressWarnings("unused") String path) {

                // Most resources won't have to do anything here.

        }

}