org.sakaiproject.myshowcase.tool.MyShowcaseSaveArtefactTwitterController.java Source code

Introduction

Here is the source code for org.sakaiproject.myshowcase.tool.MyShowcaseSaveArtefactTwitterController.java

Source

//***************************************************************************
//*MyShowcase                                                               * 
//*Copyright (C) 2010 MyKnowledgeMap Ltd.                                   *
//*                                                                         *
//*This program is free software: you can redistribute it and/or modify     *
//*it under the terms of the GNU Affero General Public License as           *
//*published by the Free Software Foundation, either version 3 of the       *
//*License, or (at your option) any later version.                          *
//*                                                                         *
//*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 Affero General Public License for more details.                      *
//*                                                                         *
//*You should have received a copy of the GNU Affero General Public License *
//*along with this program.  If not, see <http://www.gnu.org/licenses/>.    *
//*                                                                         *
//*Web: <http://www.my-showcase.org/>.                                      *
//*Email: <myshowcase@myknowledgemap.com>                                   *
//*                                                                         *
//***************************************************************************

package org.sakaiproject.myshowcase.tool;

import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
import org.sakaiproject.myshowcase.logic.*;
import org.sakaiproject.myshowcase.model.*;
import twitter4j.Paging;
import twitter4j.ResponseList;
import twitter4j.Status;
import twitter4j.Twitter;
import twitter4j.TwitterFactory;
import twitter4j.User;
import com.google.gson.Gson;

public class MyShowcaseSaveArtefactTwitterController extends AbstractController {

    final protected Log log = LogFactory.getLog(getClass());

    private String ownerId = "";

    private String aType = "";

    private String aTitle = "";

    private String aDescription = "";

    private String aDataValue = "";

    private String aSearchFilter = "";

    /**
      * Set MyShowcaseService
      * @param IMyShowcaseService Interface of the MyShowcaseService implementation
      */
    private IMyShowcaseService myshowcaseService;

    public void setMyshowcaseService(IMyShowcaseService service) {
        this.myshowcaseService = service;
    }

    /**
      * Implementation of AbstractController.handleRequestInternal
      * @param HttpServletRequest request
      * @param HttpServletResponse response
      * @return ModelAndView
      * @throws Exception
      */
    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
            throws Exception {

        readRequest(request);

        Owner owner = myshowcaseService.getOwnerById(new Long(ownerId));

        StatusMessage sm = new StatusMessage();

        List<StatusMessage> sms = new ArrayList<StatusMessage>();

        boolean tweetsFound = true;

        int totalTweets = 0;

        int artefactsCount = 0;

        List<Artefact> artefacts = new ArrayList<Artefact>();

        try {

            Twitter twitter = new TwitterFactory().getInstance();

            User user;

            user = twitter.showUser(aDataValue);

            int pageNo = 1;

            int pageSize = 200;

            int totalMatches = 0;

            String matchString = aSearchFilter;

            while (tweetsFound) {

                Paging paging = new Paging(pageNo, pageSize);

                ResponseList<Status> statuses = twitter.getUserTimeline(user.getId(), paging);

                for (Status status : statuses) {

                    if ((matchString.length() == 0) || (status.getText().contains(matchString))) {

                        totalMatches++;

                        Artefact artefact = new Artefact();

                        ArtefactDetail artefactDetail = new ArtefactDetail();

                        ArtefactType artefactType = myshowcaseService.getArtefactTypeByName(aType);

                        artefact.setOwner(owner);

                        artefact.setDescription(aDescription);

                        artefact.setName(aTitle);

                        artefact.setShortDesc(aTitle);

                        artefact.setType(artefactType);

                        artefactDetail.setTwitterUserName(aDataValue);

                        artefactDetail.setDetail(status.getText());

                        artefact.setArtefactDetail(artefactDetail);

                        artefacts.add(artefact);

                        //                      myshowcaseService.saveArtefact(artefact) ;

                        //                      artefactsCount++;
                    }
                }

                totalTweets += statuses.size();

                pageNo++;

                tweetsFound = (statuses.size() > 0);

            }

        } catch (Exception e) {

            System.out.println("Exception: MyShowcaseSaveArtefactTwitter: " + e.toString());
        }

        if (artefacts.size() > 0) {

            sm = new StatusMessage("OK",
                    "A total of " + artefacts.size() + " tweets have been added to your evidence stream.");

            for (Artefact artefact : artefacts) {

                myshowcaseService.saveArtefact(artefact);
            }

        } else {

            sm = new StatusMessage("ERROR",
                    "MyShowcase has been unable to collect any tweets for your request. No evidence has been added to your evidence stream.");
        }
        ;

        sms.add(sm);

        response.setContentType("application/json");

        response.setCharacterEncoding("UTF-8");

        PrintWriter out = response.getWriter();

        out.write(new Gson().toJson(sms));

        out.flush();

        out.close();

        return null;
    }

    /**
      * Extract parameters from the request.
      * @param HttpServletRequest request
      */
    private void readRequest(HttpServletRequest request) {

        ownerId = request.getParameter("ownerId");

        aType = request.getParameter("type").toString();

        aTitle = request.getParameter("title").toString();

        aDescription = request.getParameter("desc").toString();

        aDataValue = request.getParameter("datavalue").toString();

        aSearchFilter = request.getParameter("searchFilter").toString();
    }

}