com.redhat.jielicious.storage.mongo.response.MongoResponseBuilder.java Source code

Introduction

Here is the source code for com.redhat.jielicious.storage.mongo.response.MongoResponseBuilder.java

Source

/*
 * Copyright 2012-2017 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat 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 2, or (at your
 * option) any later version.
 *
 * Thermostat 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 Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.jielicious.storage.mongo.response;

import org.bson.Document;

import com.mongodb.Block;
import com.mongodb.client.FindIterable;

public class MongoResponseBuilder {

    /**
     * JSON Response format
     * {
     *   "response" : {
     *       [ {...}, ... ]
     *   }
     * }
     *
     * Timed JSON Response format
     * {
     *   "response" : {
     *       [ {...}, ... ]
     *   },
     *   "time" : elapsed
     * }
     */

    public static String buildJsonResponseWithTime(String documents, long elapsed) {
        return "{" + documents + buildKeyAddition("time", "" + elapsed) + "}";
    }

    public static String buildJsonDocuments(FindIterable<Document> documents) {
        final StringBuilder s = new StringBuilder();

        s.append("\"response\" : [");

        final int[] i = { 0 };

        documents.forEach(new Block<Document>() {
            @Override
            public void apply(Document document) {
                s.append(((Document) document.get("obj")).toJson()).append(",");
                i[0]++;
            }
        });

        if (i[0] != 0) {
            s.deleteCharAt(s.length() - 1);
        }

        s.append("]");

        return s.toString();
    }

    private static String buildKeyAddition(String key, String value) {
        return ",\"" + key + "\" : \"" + value + "\"";
    }
}