org.n52.twitter.dao.TwitterSearchDAO.java Source code

Introduction

Here is the source code for org.n52.twitter.dao.TwitterSearchDAO.java

Source

/**
 * Copyright (C) 2015 - 2015 52North Initiative for Geospatial Open Source
 * Software GmbH
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * If the program is linked with libraries which are licensed under one of
 * the following licenses, the combination of the program with the linked
 * library is not considered a "derivative work" of the program:
 *
 *     - Apache License, version 2.0
 *     - Apache Software License, version 1.0
 *     - GNU Lesser General Public License, version 3
 *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
 *     - Common Development and Distribution License (CDDL), version 1.0
 *
 * Therefore the distribution of the program linked with libraries licensed
 * under the aforementioned licenses, is permitted by the copyright holders
 * if the distribution is compliant with both the GNU General Public
 * license version 2 and the aforementioned licenses.
 *
 * This program 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.
 */
package org.n52.twitter.dao;

import java.util.Collection;

import org.joda.time.DateTime;
import org.n52.socialmedia.DecodingException;
import org.n52.twitter.model.TwitterMessage;

import twitter4j.GeoLocation;
import twitter4j.Query;
import twitter4j.Query.Unit;
import twitter4j.TwitterException;
import twitter4j.auth.AccessToken;

public class TwitterSearchDAO extends TwitterAbstractDAO implements SearchDAO {

    private static final Unit DEFAULT_UNIT = Unit.km;
    private static final int DEFAULT_RADIUS = 20;

    public TwitterSearchDAO(AccessToken accessToken, String oauthConsumerKey, String oauthConsumerSecret) {
        super(accessToken, oauthConsumerKey, oauthConsumerSecret);
    }

    @Override
    public Collection<TwitterMessage> search(double latitude, double longitude)
            throws TwitterException, DecodingException {
        return search(latitude, longitude, DEFAULT_RADIUS * 1000);
    }

    @Override
    public Collection<TwitterMessage> search(double latitude, double longitude, int distanceMeters)
            throws TwitterException, DecodingException {
        return search(latitude, longitude, distanceMeters, null, null);
    }

    @Override
    public Collection<TwitterMessage> search(double latitude, double longitude, DateTime fromDate, DateTime toDate)
            throws TwitterException, DecodingException {
        return search(latitude, longitude, DEFAULT_RADIUS * 1000, fromDate, toDate);
    }

    @Override
    public Collection<TwitterMessage> search(double latitude, double longitude, int distanceMeters,
            DateTime fromDate, DateTime toDate) throws TwitterException, DecodingException {
        Query searchQuery = new Query();
        searchQuery.setGeoCode(new GeoLocation(latitude, longitude), distanceMeters / 1000, DEFAULT_UNIT);
        if (toDate != null) {
            searchQuery.setUntil(toDate.toString("YYYY-MM-dd"));
        }
        if (fromDate != null) {
            searchQuery.setSince(fromDate.toString("YYYY-MM-dd"));
        }
        return executeApiRequest(searchQuery);
    }

}