it.polimi.spf.framework.proximity.FieldContainerMarshaller.java Source code

Introduction

Here is the source code for it.polimi.spf.framework.proximity.FieldContainerMarshaller.java

Source

/* 
 * Copyright 2014 Jacopo Aliprandi, Dario Archetti
 * 
 * This file is part of SPF.
 * 
 * SPF is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free 
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * SPF 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 Lesser General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with SPF.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package it.polimi.spf.framework.proximity;

import it.polimi.spf.shared.model.ProfileFieldContainer;

import java.util.Iterator;

import org.json.JSONException;
import org.json.JSONObject;

import android.text.TextUtils;
import android.util.Log;

public class FieldContainerMarshaller {

    private static final String TAG = "FieldContainerMarshaller";
    private static final String SEPARATOR = ";";

    public static String[] unmarshallIdentifierList(String value) {
        return TextUtils.split(value, SEPARATOR);
    }

    public static String marshallIdentifierList(String[] list) {
        return TextUtils.join(SEPARATOR, list);
    }

    public static String marshallContainer(ProfileFieldContainer container) {
        return StringableProfileFieldContainer.from(container).toJSONString();
    }

    public static ProfileFieldContainer unmarshallContainer(String value) {
        return StringableProfileFieldContainer.fromJSONString(value);
    }

    private static class StringableProfileFieldContainer extends ProfileFieldContainer {

        private static final String FIELDS = "fields";
        private static final String STATUS = "modified";

        public static StringableProfileFieldContainer fromJSONString(String value) {
            StringableProfileFieldContainer container = new StringableProfileFieldContainer();

            try {
                JSONObject source = new JSONObject(value);
                JSONObject fields = source.getJSONObject(FIELDS);
                JSONObject status = source.getJSONObject(STATUS);

                Iterator<String> identifiers = fields.keys();
                while (identifiers.hasNext()) {
                    String id = identifiers.next();
                    container.mFields.putString(id, fields.getString(id));
                    container.mStatus.putString(id, status.getString(id));
                }

            } catch (JSONException e) {
                Log.e(TAG, "Invalid JSON for container", e);
            }

            return container;
        }

        public static StringableProfileFieldContainer from(ProfileFieldContainer source) {
            if (source instanceof StringableProfileFieldContainer) {
                return (StringableProfileFieldContainer) source;
            }

            return new StringableProfileFieldContainer(source);
        }

        public StringableProfileFieldContainer(ProfileFieldContainer source) {
            super(source);
        }

        public StringableProfileFieldContainer() {
        }

        public String toJSONString() {
            try {
                JSONObject fields = new JSONObject();
                JSONObject status = new JSONObject();
                for (String key : mFields.keySet()) {
                    fields.put(key, mFields.getString(key));
                    status.put(key, mStatus.getString(key));
                }

                JSONObject result = new JSONObject();
                result.put(FIELDS, fields);
                result.put(STATUS, status);

                return result.toString();
            } catch (JSONException e) {
                Log.e(TAG, "Error marshalling container", e);
                return "";
            }
        }

    }
}